diff --git a/changelog_entry.yaml b/changelog_entry.yaml
index e69de29bb2d..2b8ca1a797f 100644
--- a/changelog_entry.yaml
+++ b/changelog_entry.yaml
@@ -0,0 +1,4 @@
+- bump: minor
+  changes:
+    added:
+      - Add Mississippi TANF program.
diff --git a/policyengine_us/parameters/gov/states/ms/dhs/tanf/income/gross_income_limit_rate.yaml b/policyengine_us/parameters/gov/states/ms/dhs/tanf/income/gross_income_limit_rate.yaml
new file mode 100644
index 00000000000..6ee864c7e41
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/ms/dhs/tanf/income/gross_income_limit_rate.yaml
@@ -0,0 +1,14 @@
+description: Mississippi limits gross income to this share of the need standard under the Temporary Assistance for Needy Families program.
+
+values:
+  2018-07-01: 1.85
+
+metadata:
+  unit: /1
+  period: month
+  label: Mississippi TANF gross income limit rate
+  reference:
+    - title: Miss. Code. tit. 18, pt. 19 - TANF State Plan (185% of Need Standard)
+      href: https://www.law.cornell.edu/regulations/mississippi/Miss-Code-tit-18-pt-19
+    - title: MDHS TANF Eligibility Flyer (2018) - Shows 185% Requirements
+      href: https://www.mdhs.ms.gov/wp-content/uploads/2018/02/MDHS_TANF-Eligibility-Flyer.pdf
diff --git a/policyengine_us/parameters/gov/states/ms/dhs/tanf/need_standard/amount.yaml b/policyengine_us/parameters/gov/states/ms/dhs/tanf/need_standard/amount.yaml
new file mode 100644
index 00000000000..9828f9654e2
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/ms/dhs/tanf/need_standard/amount.yaml
@@ -0,0 +1,46 @@
+description: Mississippi sets this amount as the need standard under the Temporary Assistance for Needy Families program.
+
+metadata:
+  unit: currency-USD
+  period: month
+  breakdown:
+    - range(1, 11)
+  label: Mississippi TANF need standard amount
+  reference:
+    - title: MDHS TANF Eligibility Flyer (2018) - 100% Requirements Table
+      href: https://www.mdhs.ms.gov/wp-content/uploads/2018/02/MDHS_TANF-Eligibility-Flyer.pdf
+    - title: Mississippi Department of Human Services - Applying for TANF (Gross Income Limits, values derived by dividing by 1.85)
+      href: https://www.mdhs.ms.gov/help/tanf/applying-for-tanf/
+# 2018 values from MDHS Eligibility Flyer (100% Requirements = Need Standard)
+# 2025 values derived from current MDHS website gross income limits / 1.85
+
+1:
+  2018-07-01: 218
+  2025-07-01: 339
+2:
+  2018-07-01: 293
+  2025-07-01: 460
+3:
+  2018-07-01: 368
+  2025-07-01: 581
+4:
+  2018-07-01: 443
+  2025-07-01: 702
+5:
+  2018-07-01: 518
+  2025-07-01: 823
+6:
+  2018-07-01: 593
+  2025-07-01: 944
+7:
+  2018-07-01: 668
+  2025-07-01: 1_065
+8:
+  2018-07-01: 743
+  2025-07-01: 1_186
+9:
+  2018-07-01: 818
+  2025-07-01: 1_307
+10:
+  2018-07-01: 893
+  2025-07-01: 1_428
diff --git a/policyengine_us/parameters/gov/states/ms/dhs/tanf/need_standard/max_table_size.yaml b/policyengine_us/parameters/gov/states/ms/dhs/tanf/need_standard/max_table_size.yaml
new file mode 100644
index 00000000000..94aa3f726c3
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/ms/dhs/tanf/need_standard/max_table_size.yaml
@@ -0,0 +1,14 @@
+description: Mississippi caps need standard calculations at this household size under the Temporary Assistance for Needy Families program.
+
+values:
+  2018-07-01: 10
+
+metadata:
+  unit: person
+  period: year
+  label: Mississippi TANF need standard maximum table size
+  reference:
+    - title: MDHS TANF Eligibility Flyer (2018) - Income Requirements Table (shows sizes 1-10)
+      href: https://www.mdhs.ms.gov/wp-content/uploads/2018/02/MDHS_TANF-Eligibility-Flyer.pdf
+    - title: Mississippi Department of Human Services - Applying for TANF (Income Limits Table shows sizes 1-10)
+      href: https://www.mdhs.ms.gov/help/tanf/applying-for-tanf/
diff --git a/policyengine_us/parameters/gov/states/ms/dhs/tanf/payment_standard/additional_person.yaml b/policyengine_us/parameters/gov/states/ms/dhs/tanf/payment_standard/additional_person.yaml
new file mode 100644
index 00000000000..cd473cd71ce
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/ms/dhs/tanf/payment_standard/additional_person.yaml
@@ -0,0 +1,14 @@
+description: Mississippi provides this amount for each additional person beyond the second under the Temporary Assistance for Needy Families program.
+
+values:
+  2018-07-01: 24
+
+metadata:
+  unit: currency-USD
+  period: month
+  label: Mississippi TANF payment standard additional person
+  reference:
+    - title: MDHS TANF Eligibility Flyer (2018) - Maximum TANF Grant Table
+      href: https://www.mdhs.ms.gov/wp-content/uploads/2018/02/MDHS_TANF-Eligibility-Flyer.pdf
+    - title: Miss. Code. tit. 18, pt. 19 - TANF State Plan (Payment Standards)
+      href: https://www.law.cornell.edu/regulations/mississippi/Miss-Code-tit-18-pt-19
diff --git a/policyengine_us/parameters/gov/states/ms/dhs/tanf/payment_standard/first_person.yaml b/policyengine_us/parameters/gov/states/ms/dhs/tanf/payment_standard/first_person.yaml
new file mode 100644
index 00000000000..2b99d80f67e
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/ms/dhs/tanf/payment_standard/first_person.yaml
@@ -0,0 +1,17 @@
+description: Mississippi provides this amount for the first person under the Temporary Assistance for Needy Families program.
+
+values:
+  2018-07-01: 110
+  2021-05-01: 200
+
+metadata:
+  unit: currency-USD
+  period: month
+  label: Mississippi TANF payment standard first person
+  reference:
+    - title: MDHS TANF Eligibility Flyer (2018) - Maximum TANF Grant Table
+      href: https://www.mdhs.ms.gov/wp-content/uploads/2018/02/MDHS_TANF-Eligibility-Flyer.pdf
+    - title: SB 2759 (2021) - TANF Benefit Increase (first person from $110 to $200)
+      href: https://billstatus.ls.state.ms.us/documents/2021/html/SB/2700-2799/SB2759SG.htm
+    - title: Miss. Code. tit. 18, pt. 19 - TANF State Plan (Payment Standards)
+      href: https://www.law.cornell.edu/regulations/mississippi/Miss-Code-tit-18-pt-19
diff --git a/policyengine_us/parameters/gov/states/ms/dhs/tanf/payment_standard/second_person.yaml b/policyengine_us/parameters/gov/states/ms/dhs/tanf/payment_standard/second_person.yaml
new file mode 100644
index 00000000000..0076deca747
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/ms/dhs/tanf/payment_standard/second_person.yaml
@@ -0,0 +1,14 @@
+description: Mississippi provides this amount for the second person under the Temporary Assistance for Needy Families program.
+
+values:
+  2018-07-01: 36
+
+metadata:
+  unit: currency-USD
+  period: month
+  label: Mississippi TANF payment standard second person
+  reference:
+    - title: MDHS TANF Eligibility Flyer (2018) - Maximum TANF Grant Table
+      href: https://www.mdhs.ms.gov/wp-content/uploads/2018/02/MDHS_TANF-Eligibility-Flyer.pdf
+    - title: Miss. Code. tit. 18, pt. 19 - TANF State Plan (Payment Standards)
+      href: https://www.law.cornell.edu/regulations/mississippi/Miss-Code-tit-18-pt-19
diff --git a/policyengine_us/parameters/gov/states/ms/dhs/tanf/resources/limit.yaml b/policyengine_us/parameters/gov/states/ms/dhs/tanf/resources/limit.yaml
new file mode 100644
index 00000000000..34fd5bfa7ce
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/ms/dhs/tanf/resources/limit.yaml
@@ -0,0 +1,14 @@
+description: Mississippi limits resources to this amount under the Temporary Assistance for Needy Families program.
+
+values:
+  2018-07-01: 2_000
+
+metadata:
+  unit: currency-USD
+  period: month
+  label: Mississippi TANF resource limit
+  reference:
+    - title: Miss. Code. tit. 18, pt. 19 - TANF State Plan
+      href: https://www.law.cornell.edu/regulations/mississippi/Miss-Code-tit-18-pt-19
+    - title: Mississippi Department of Human Services - TANF
+      href: https://www.mdhs.ms.gov/help/tanf/
diff --git a/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/integration.yaml b/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/integration.yaml
new file mode 100644
index 00000000000..ce0c68e42f9
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/integration.yaml
@@ -0,0 +1,267 @@
+# Mississippi TANF Integration Tests
+#
+# Program Rules:
+# - Income eligibility: Gross income <= 185% of need standard
+# - Need standards by size: 1=$339, 2=$460, 3=$581, 4=$702, 5=$823
+# - Income limits by size: 1=$627, 2=$851, 3=$1,074, 4=$1,298, 5=$1,523
+# - Payment standards: First person $200, second $36, each additional $24
+# - Resource limit: $2,000
+# - Benefit: Maximum Payment Standard - Countable Income
+
+- name: Case 1, single parent with one child, no income, receives maximum benefit.
+  period: 2026-01
+  input:
+    people:
+      person1:
+        age: 30
+      person2:
+        age: 5
+        is_tax_unit_dependent: true
+    spm_units:
+      spm_unit:
+        members: [person1, person2]
+        spm_unit_assets: 500
+    tax_units:
+      tax_unit:
+        members: [person1, person2]
+    households:
+      household:
+        members: [person1, person2]
+        state_code: MS
+  output:
+    # Household size: 2
+    spm_unit_size: 2
+    # Payment standard: $200 + $36 = $236
+    ms_tanf_maximum_benefit: 236
+    # Resources: $500 <= $2,000
+    ms_tanf_resources_eligible: true
+    # Income: $0 <= $851 (185% of $460)
+    ms_tanf_income_eligible: true
+    # Final benefit: $236 - $0 = $236
+    ms_tanf_eligible: true
+    ms_tanf: 236
+
+- name: Case 2, family of 3 with low earned income.
+  period: 2026-01
+  input:
+    people:
+      person1:
+        age: 35
+        employment_income_before_lsr: 6_000
+        # Annual income: $6,000 -> Monthly: $500
+      person2:
+        age: 8
+        is_tax_unit_dependent: true
+      person3:
+        age: 3
+        is_tax_unit_dependent: true
+    spm_units:
+      spm_unit:
+        members: [person1, person2, person3]
+        spm_unit_assets: 800
+    tax_units:
+      tax_unit:
+        members: [person1, person2, person3]
+    households:
+      household:
+        members: [person1, person2, person3]
+        state_code: MS
+  output:
+    # Household size: 3
+    spm_unit_size: 3
+    # Payment standard: $200 + $36 + $24 = $260
+    ms_tanf_maximum_benefit: 260
+    # Resources: $800 <= $2,000
+    ms_tanf_resources_eligible: true
+    # Gross income: $500/month
+    # Limit: $581 * 1.85 = $1,074.85
+    # $500 <= $1,074.85
+    ms_tanf_income_eligible: true
+    # Final eligibility
+    ms_tanf_eligible: true
+
+- name: Case 3, family of 3 with income at 185% threshold.
+  period: 2026-01
+  input:
+    people:
+      person1:
+        age: 35
+        employment_income_before_lsr: 12_888
+        # Annual income: $12,888 -> Monthly: $1,074
+      person2:
+        age: 8
+        is_tax_unit_dependent: true
+      person3:
+        age: 3
+        is_tax_unit_dependent: true
+    spm_units:
+      spm_unit:
+        members: [person1, person2, person3]
+        spm_unit_assets: 500
+    tax_units:
+      tax_unit:
+        members: [person1, person2, person3]
+    households:
+      household:
+        members: [person1, person2, person3]
+        state_code: MS
+  output:
+    # Household size: 3
+    spm_unit_size: 3
+    # Payment standard: $200 + $36 + $24 = $260
+    ms_tanf_maximum_benefit: 260
+    # Gross income: $1,074/month
+    # Limit: $581 * 1.85 = $1,074.85
+    # $1,074 <= $1,074.85 = true (exactly at threshold)
+    ms_tanf_income_eligible: true
+    ms_tanf_resources_eligible: true
+    ms_tanf_eligible: true
+
+- name: Case 4, family of 3 with income above 185% threshold.
+  period: 2026-01
+  input:
+    people:
+      person1:
+        age: 35
+        employment_income_before_lsr: 15_000
+        # Annual income: $15,000 -> Monthly: $1,250
+      person2:
+        age: 8
+        is_tax_unit_dependent: true
+      person3:
+        age: 3
+        is_tax_unit_dependent: true
+    spm_units:
+      spm_unit:
+        members: [person1, person2, person3]
+        spm_unit_assets: 500
+    tax_units:
+      tax_unit:
+        members: [person1, person2, person3]
+    households:
+      household:
+        members: [person1, person2, person3]
+        state_code: MS
+  output:
+    # Household size: 3
+    spm_unit_size: 3
+    # Gross income: $1,250/month
+    # Limit: $581 * 1.85 = $1,074.85
+    # $1,250 > $1,074.85 = false
+    ms_tanf_income_eligible: false
+    ms_tanf_resources_eligible: true
+    ms_tanf_eligible: false
+    ms_tanf: 0
+
+- name: Case 5, family of 4 with resources at limit.
+  period: 2026-01
+  input:
+    people:
+      person1:
+        age: 40
+      person2:
+        age: 38
+      person3:
+        age: 10
+        is_tax_unit_dependent: true
+      person4:
+        age: 6
+        is_tax_unit_dependent: true
+    spm_units:
+      spm_unit:
+        members: [person1, person2, person3, person4]
+        spm_unit_assets: 2_000
+    tax_units:
+      tax_unit:
+        members: [person1, person2, person3, person4]
+    households:
+      household:
+        members: [person1, person2, person3, person4]
+        state_code: MS
+  output:
+    # Household size: 4
+    spm_unit_size: 4
+    # Payment standard: $200 + $36 + $24 + $24 = $284
+    ms_tanf_maximum_benefit: 284
+    # Resources: $2,000 <= $2,000
+    ms_tanf_resources_eligible: true
+    # Income: $0/month <= $1,298.7
+    ms_tanf_income_eligible: true
+    ms_tanf_eligible: true
+    # Benefit: $284 - $0 = $284
+    ms_tanf: 284
+
+- name: Case 6, family with resources exceeding limit.
+  period: 2026-01
+  input:
+    people:
+      person1:
+        age: 30
+      person2:
+        age: 5
+        is_tax_unit_dependent: true
+    spm_units:
+      spm_unit:
+        members: [person1, person2]
+        spm_unit_assets: 3_000
+    tax_units:
+      tax_unit:
+        members: [person1, person2]
+    households:
+      household:
+        members: [person1, person2]
+        state_code: MS
+  output:
+    # Household size: 2
+    spm_unit_size: 2
+    # Resources: $3,000 > $2,000
+    ms_tanf_resources_eligible: false
+    # Income: $0 <= $851 = true
+    ms_tanf_income_eligible: true
+    # Fails resources test, so ineligible
+    ms_tanf_eligible: false
+    ms_tanf: 0
+
+- name: Case 7, large family of 5 with mixed income.
+  period: 2026-01
+  input:
+    people:
+      person1:
+        age: 35
+        employment_income_before_lsr: 6_000
+        # Annual: $6,000 -> Monthly: $500
+      person2:
+        age: 12
+        is_tax_unit_dependent: true
+      person3:
+        age: 8
+        is_tax_unit_dependent: true
+      person4:
+        age: 5
+        is_tax_unit_dependent: true
+      person5:
+        age: 2
+        is_tax_unit_dependent: true
+    spm_units:
+      spm_unit:
+        members: [person1, person2, person3, person4, person5]
+        spm_unit_assets: 200
+    tax_units:
+      tax_unit:
+        members: [person1, person2, person3, person4, person5]
+    households:
+      household:
+        members: [person1, person2, person3, person4, person5]
+        state_code: MS
+  output:
+    # Household size: 5
+    spm_unit_size: 5
+    # Payment standard: $200 + $36 + ($24 * 3) = $308
+    ms_tanf_maximum_benefit: 308
+    # Resources: $200 <= $2,000
+    ms_tanf_resources_eligible: true
+    # Gross income: $500/month
+    # Limit: $823 * 1.85 = $1,522.55
+    # $500 <= $1,522.55 = true
+    ms_tanf_income_eligible: true
+    ms_tanf_eligible: true
diff --git a/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf.yaml b/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf.yaml
new file mode 100644
index 00000000000..efa341c2bc3
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf.yaml
@@ -0,0 +1,124 @@
+# Mississippi TANF benefit calculation tests
+# Benefit = Maximum Payment Standard - Countable Income
+# If countable income exceeds payment standard, benefit = $0
+# Must be eligible (ms_tanf_eligible) to receive any benefit
+
+- name: Case 1, ineligible household receives zero benefit.
+  period: 2026-01
+  input:
+    state_code: MS
+    ms_tanf_eligible: false
+    ms_tanf_maximum_benefit: 260
+    ms_tanf_countable_income: 0
+  output:
+    ms_tanf: 0
+
+- name: Case 2, eligible household with no income receives maximum benefit.
+  period: 2026-01
+  input:
+    state_code: MS
+    ms_tanf_eligible: true
+    ms_tanf_maximum_benefit: 260
+    ms_tanf_countable_income: 0
+  output:
+    # $260 - $0 = $260
+    ms_tanf: 260
+
+- name: Case 3, eligible household with countable income receives reduced benefit.
+  period: 2026-01
+  input:
+    state_code: MS
+    ms_tanf_eligible: true
+    ms_tanf_maximum_benefit: 260
+    ms_tanf_countable_income: 100
+  output:
+    # $260 - $100 = $160
+    ms_tanf: 160
+
+- name: Case 4, eligible family of 2 with no income.
+  period: 2026-01
+  input:
+    state_code: MS
+    ms_tanf_eligible: true
+    ms_tanf_maximum_benefit: 236
+    ms_tanf_countable_income: 0
+  output:
+    # $236 - $0 = $236
+    ms_tanf: 236
+
+- name: Case 5, eligible family of 2 with some income.
+  period: 2026-01
+  input:
+    state_code: MS
+    ms_tanf_eligible: true
+    ms_tanf_maximum_benefit: 236
+    ms_tanf_countable_income: 150
+  output:
+    # $236 - $150 = $86
+    ms_tanf: 86
+
+- name: Case 6, eligible family of 4 with no income.
+  period: 2026-01
+  input:
+    state_code: MS
+    ms_tanf_eligible: true
+    ms_tanf_maximum_benefit: 284
+    ms_tanf_countable_income: 0
+  output:
+    # $284 - $0 = $284
+    ms_tanf: 284
+
+- name: Case 7, eligible family of 4 with income.
+  period: 2026-01
+  input:
+    state_code: MS
+    ms_tanf_eligible: true
+    ms_tanf_maximum_benefit: 284
+    ms_tanf_countable_income: 200
+  output:
+    # $284 - $200 = $84
+    ms_tanf: 84
+
+- name: Case 8, countable income equals maximum benefit.
+  period: 2026-01
+  input:
+    state_code: MS
+    ms_tanf_eligible: true
+    ms_tanf_maximum_benefit: 260
+    ms_tanf_countable_income: 260
+  output:
+    # $260 - $260 = $0
+    ms_tanf: 0
+
+- name: Case 9, countable income exceeds maximum benefit.
+  period: 2026-01
+  input:
+    state_code: MS
+    ms_tanf_eligible: true
+    ms_tanf_maximum_benefit: 260
+    ms_tanf_countable_income: 300
+  output:
+    # $260 - $300 = -$40, capped at $0
+    ms_tanf: 0
+
+- name: Case 10, single person eligible with small income.
+  period: 2026-01
+  input:
+    state_code: MS
+    ms_tanf_eligible: true
+    ms_tanf_maximum_benefit: 200
+    ms_tanf_countable_income: 50
+  output:
+    # $200 - $50 = $150
+    ms_tanf: 150
+
+- name: Case 11, high income reduces benefit to near zero.
+  period: 2026-01
+  input:
+    state_code: MS
+    ms_tanf_eligible: true
+    ms_tanf_maximum_benefit: 260
+    ms_tanf_countable_income: 255
+  output:
+    # $260 - $255 = $5
+    ms_tanf: 5
diff --git a/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf_eligible.yaml b/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf_eligible.yaml
new file mode 100644
index 00000000000..c644c446aea
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf_eligible.yaml
@@ -0,0 +1,86 @@
+# Mississippi TANF overall eligibility tests
+# Eligible when:
+# - In Mississippi (defined_for = MS)
+# - Has eligible household member (is_person_demographic_tanf_eligible)
+# - Meets income test (ms_tanf_income_eligible)
+# - Meets resources test (ms_tanf_resources_eligible)
+
+- name: Case 1, eligible when all conditions met.
+  period: 2026-01
+  input:
+    state_code: MS
+    is_person_demographic_tanf_eligible: true
+    ms_tanf_income_eligible: true
+    ms_tanf_resources_eligible: true
+  output:
+    ms_tanf_eligible: true
+
+- name: Case 2, ineligible when not in Mississippi.
+  period: 2026-01
+  input:
+    state_code: NY
+    is_person_demographic_tanf_eligible: true
+    ms_tanf_income_eligible: true
+    ms_tanf_resources_eligible: true
+  output:
+    ms_tanf_eligible: false
+
+- name: Case 3, ineligible when not demographically eligible.
+  period: 2026-01
+  input:
+    state_code: MS
+    is_person_demographic_tanf_eligible: false
+    ms_tanf_income_eligible: true
+    ms_tanf_resources_eligible: true
+  output:
+    ms_tanf_eligible: false
+
+- name: Case 4, ineligible when income test fails.
+  period: 2026-01
+  input:
+    state_code: MS
+    is_person_demographic_tanf_eligible: true
+    ms_tanf_income_eligible: false
+    ms_tanf_resources_eligible: true
+  output:
+    ms_tanf_eligible: false
+
+- name: Case 5, ineligible when resources test fails.
+  period: 2026-01
+  input:
+    state_code: MS
+    is_person_demographic_tanf_eligible: true
+    ms_tanf_income_eligible: true
+    ms_tanf_resources_eligible: false
+  output:
+    ms_tanf_eligible: false
+
+- name: Case 6, ineligible when all tests fail.
+  period: 2026-01
+  input:
+    state_code: NY
+    is_person_demographic_tanf_eligible: false
+    ms_tanf_income_eligible: false
+    ms_tanf_resources_eligible: false
+  output:
+    ms_tanf_eligible: false
+
+- name: Case 7, ineligible when income and resources fail.
+  period: 2026-01
+  input:
+    state_code: MS
+    is_person_demographic_tanf_eligible: true
+    ms_tanf_income_eligible: false
+    ms_tanf_resources_eligible: false
+  output:
+    ms_tanf_eligible: false
+
+- name: Case 8, ineligible when demographic and resources fail.
+  period: 2026-01
+  input:
+    state_code: MS
+    is_person_demographic_tanf_eligible: false
+    ms_tanf_income_eligible: true
+    ms_tanf_resources_eligible: false
+  output:
+    ms_tanf_eligible: false
diff --git a/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf_income_eligible.yaml b/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf_income_eligible.yaml
new file mode 100644
index 00000000000..a2622b0e44c
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf_income_eligible.yaml
@@ -0,0 +1,158 @@
+# Mississippi TANF income eligibility tests
+# Gross income limit = Need Standard x 1.85 (185%)
+# Need standards by size: 1=$339, 2=$460, 3=$581, 4=$702
+# Income limits by size: 1=$627, 2=$851, 3=$1,074, 4=$1,298
+
+- name: Case 1, single person with zero income.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 1
+    tanf_gross_earned_income: 0
+    tanf_gross_unearned_income: 0
+  output:
+    # Limit: $339 * 1.85 = $627.15
+    ms_tanf_income_eligible: true
+
+- name: Case 2, single person with income at limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 1
+    tanf_gross_earned_income: 627
+    tanf_gross_unearned_income: 0
+  output:
+    # Limit: $339 * 1.85 = $627.15
+    # Income: $627 <= $627.15 = true
+    ms_tanf_income_eligible: true
+
+- name: Case 3, single person with income above limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 1
+    tanf_gross_earned_income: 628
+    tanf_gross_unearned_income: 0
+  output:
+    # Limit: $339 * 1.85 = $627.15
+    # Income: $628 > $627.15 = false
+    ms_tanf_income_eligible: false
+
+- name: Case 4, family of 2 with income below limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 2
+    tanf_gross_earned_income: 500
+    tanf_gross_unearned_income: 200
+  output:
+    # Limit: $460 * 1.85 = $851
+    # Income: $700 <= $851 = true
+    ms_tanf_income_eligible: true
+
+- name: Case 5, family of 2 with income at limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 2
+    tanf_gross_earned_income: 600
+    tanf_gross_unearned_income: 251
+  output:
+    # Limit: $460 * 1.85 = $851
+    # Income: $851 <= $851 = true
+    ms_tanf_income_eligible: true
+
+- name: Case 6, family of 2 with income above limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 2
+    tanf_gross_earned_income: 600
+    tanf_gross_unearned_income: 252
+  output:
+    # Limit: $460 * 1.85 = $851
+    # Income: $852 > $851 = false
+    ms_tanf_income_eligible: false
+
+- name: Case 7, family of 3 with income below limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 3
+    tanf_gross_earned_income: 800
+    tanf_gross_unearned_income: 0
+  output:
+    # Limit: $581 * 1.85 = $1,074.85
+    # Income: $800 <= $1,074.85 = true
+    ms_tanf_income_eligible: true
+
+- name: Case 8, family of 3 with income at limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 3
+    tanf_gross_earned_income: 1_074
+    tanf_gross_unearned_income: 0
+  output:
+    # Limit: $581 * 1.85 = $1,074.85
+    # Income: $1,074 <= $1,074.85 = true
+    ms_tanf_income_eligible: true
+
+- name: Case 9, family of 3 with income above limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 3
+    tanf_gross_earned_income: 1_075
+    tanf_gross_unearned_income: 0
+  output:
+    # Limit: $581 * 1.85 = $1,074.85
+    # Income: $1,075 > $1,074.85 = false
+    ms_tanf_income_eligible: false
+
+- name: Case 10, family of 4 with income below limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 4
+    tanf_gross_earned_income: 1_000
+    tanf_gross_unearned_income: 200
+  output:
+    # Limit: $702 * 1.85 = $1,298.7
+    # Income: $1,200 <= $1,298.7 = true
+    ms_tanf_income_eligible: true
+
+- name: Case 11, family of 4 with income above limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 4
+    tanf_gross_earned_income: 1_000
+    tanf_gross_unearned_income: 300
+  output:
+    # Limit: $702 * 1.85 = $1,298.7
+    # Income: $1,300 > $1,298.7 = false
+    ms_tanf_income_eligible: false
+
+- name: Case 12, family of 11 need standard capped at size 10.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 11
+    tanf_gross_earned_income: 2_641
+    tanf_gross_unearned_income: 0
+  output:
+    # Limit: $1,428 * 1.85 = $2,641.80 (uses size 10 need standard)
+    # Income: $2,641 <= $2,641.80 = true
+    ms_tanf_income_eligible: true
+
+- name: Case 13, not in Mississippi.
+  period: 2026-01
+  input:
+    state_code: NY
+    spm_unit_size: 3
+    tanf_gross_earned_income: 500
+    tanf_gross_unearned_income: 0
+  output:
+    # Not in MS, returns false (defined_for = MS)
+    ms_tanf_income_eligible: false
diff --git a/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf_maximum_benefit.yaml b/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf_maximum_benefit.yaml
new file mode 100644
index 00000000000..c8dd03647ea
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf_maximum_benefit.yaml
@@ -0,0 +1,113 @@
+# Mississippi TANF maximum benefit (payment standard) tests
+# Per MS Code 43-17-5(1):
+# - First person: $200
+# - Second person: $36
+# - Each additional person: $24
+
+- name: Case 1, family of 1.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 1
+  output:
+    # $200 (first person only)
+    ms_tanf_maximum_benefit: 200
+
+- name: Case 2, family of 2.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 2
+  output:
+    # $200 + $36 = $236
+    ms_tanf_maximum_benefit: 236
+
+- name: Case 3, family of 3.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 3
+  output:
+    # $200 + $36 + $24 = $260
+    ms_tanf_maximum_benefit: 260
+
+- name: Case 4, family of 4.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 4
+  output:
+    # $200 + $36 + $24 + $24 = $284
+    ms_tanf_maximum_benefit: 284
+
+- name: Case 5, family of 5.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 5
+  output:
+    # $200 + $36 + ($24 * 3) = $308
+    ms_tanf_maximum_benefit: 308
+
+- name: Case 6, family of 6.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 6
+  output:
+    # $200 + $36 + ($24 * 4) = $332
+    ms_tanf_maximum_benefit: 332
+
+- name: Case 7, family of 7.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 7
+  output:
+    # $200 + $36 + ($24 * 5) = $356
+    ms_tanf_maximum_benefit: 356
+
+- name: Case 8, family of 8.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 8
+  output:
+    # $200 + $36 + ($24 * 6) = $380
+    ms_tanf_maximum_benefit: 380
+
+- name: Case 9, family of 9.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 9
+  output:
+    # $200 + $36 + ($24 * 7) = $404
+    ms_tanf_maximum_benefit: 404
+
+- name: Case 10, family of 10.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 10
+  output:
+    # $200 + $36 + ($24 * 8) = $428
+    ms_tanf_maximum_benefit: 428
+
+- name: Case 11, family of 11.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_size: 11
+  output:
+    # $200 + $36 + ($24 * 9) = $452
+    ms_tanf_maximum_benefit: 452
+
+- name: Case 12, not in Mississippi.
+  period: 2026-01
+  input:
+    state_code: NY
+    spm_unit_size: 3
+  output:
+    # Not in MS, returns 0 (defined_for = MS)
+    ms_tanf_maximum_benefit: 0
diff --git a/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf_resources_eligible.yaml b/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf_resources_eligible.yaml
new file mode 100644
index 00000000000..833dd23510b
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/ms/dhs/tanf/ms_tanf_resources_eligible.yaml
@@ -0,0 +1,66 @@
+# Mississippi TANF resources eligibility tests
+# Resource limit: $2,000 for all households
+# Effective date: July 1, 2019
+
+- name: Case 1, zero resources.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_assets: 0
+  output:
+    # $0 <= $2,000 = true
+    ms_tanf_resources_eligible: true
+
+- name: Case 2, resources well below limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_assets: 500
+  output:
+    # $500 <= $2,000 = true
+    ms_tanf_resources_eligible: true
+
+- name: Case 3, resources below limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_assets: 1_500
+  output:
+    # $1,500 <= $2,000 = true
+    ms_tanf_resources_eligible: true
+
+- name: Case 4, resources exactly at limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_assets: 2_000
+  output:
+    # $2,000 <= $2,000 = true
+    ms_tanf_resources_eligible: true
+
+- name: Case 5, resources slightly above limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_assets: 2_001
+  output:
+    # $2,001 > $2,000 = false
+    ms_tanf_resources_eligible: false
+
+- name: Case 6, resources well above limit.
+  period: 2026-01
+  input:
+    state_code: MS
+    spm_unit_assets: 5_000
+  output:
+    # $5,000 > $2,000 = false
+    ms_tanf_resources_eligible: false
+
+- name: Case 7, not in Mississippi.
+  period: 2026-01
+  input:
+    state_code: NY
+    spm_unit_assets: 500
+  output:
+    # Not in MS, returns false (defined_for = MS)
+    ms_tanf_resources_eligible: false
diff --git a/policyengine_us/variables/gov/states/ms/dhs/tanf/eligibility/ms_tanf_eligible.py b/policyengine_us/variables/gov/states/ms/dhs/tanf/eligibility/ms_tanf_eligible.py
new file mode 100644
index 00000000000..bc85c924011
--- /dev/null
+++ b/policyengine_us/variables/gov/states/ms/dhs/tanf/eligibility/ms_tanf_eligible.py
@@ -0,0 +1,33 @@
+from policyengine_us.model_api import *
+
+
+class ms_tanf_eligible(Variable):
+    value_type = bool
+    entity = SPMUnit
+    label = "Mississippi TANF eligibility"
+    definition_period = MONTH
+    defined_for = StateCode.MS
+    reference = (
+        "https://www.mdhs.ms.gov/wp-content/uploads/2018/02/MDHS_TANF-Eligibility-Flyer.pdf",
+        "https://law.justia.com/codes/mississippi/title-43/chapter-17/section-43-17-1/",
+        "https://www.law.cornell.edu/regulations/mississippi/Miss-Code-tit-18-pt-19",
+    )
+
+    def formula(spm_unit, period, parameters):
+        # Use federal demographic eligibility baseline
+        demographic_eligible = spm_unit("is_demographic_tanf_eligible", period)
+
+        # Use federal immigration eligibility baseline
+        immigration_eligible = (
+            add(spm_unit, period, ["is_citizen_or_legal_immigrant"]) > 0
+        )
+
+        income_eligible = spm_unit("ms_tanf_income_eligible", period)
+        resources_eligible = spm_unit("ms_tanf_resources_eligible", period)
+
+        return (
+            demographic_eligible
+            & immigration_eligible
+            & income_eligible
+            & resources_eligible
+        )
diff --git a/policyengine_us/variables/gov/states/ms/dhs/tanf/eligibility/ms_tanf_income_eligible.py b/policyengine_us/variables/gov/states/ms/dhs/tanf/eligibility/ms_tanf_income_eligible.py
new file mode 100644
index 00000000000..b1b08eb2f29
--- /dev/null
+++ b/policyengine_us/variables/gov/states/ms/dhs/tanf/eligibility/ms_tanf_income_eligible.py
@@ -0,0 +1,34 @@
+from policyengine_us.model_api import *
+
+
+class ms_tanf_income_eligible(Variable):
+    value_type = bool
+    entity = SPMUnit
+    label = "Mississippi TANF income eligibility"
+    definition_period = MONTH
+    defined_for = StateCode.MS
+    reference = (
+        "https://www.mdhs.ms.gov/wp-content/uploads/2018/02/MDHS_TANF-Eligibility-Flyer.pdf",
+        "https://www.law.cornell.edu/regulations/mississippi/Miss-Code-tit-18-pt-19",
+        "https://www.mdhs.ms.gov/help/tanf/applying-for-tanf/",
+    )
+
+    def formula(spm_unit, period, parameters):
+        p = parameters(period).gov.states.ms.dhs.tanf
+
+        # Use federal baseline for gross income
+        gross_income = add(
+            spm_unit,
+            period,
+            ["tanf_gross_earned_income", "tanf_gross_unearned_income"],
+        )
+
+        # Get need standard based on household size (capped at table max)
+        size = spm_unit("spm_unit_size", period.this_year)
+        capped_size = min_(size, p.need_standard.max_table_size).astype(int)
+        need_standard = p.need_standard.amount[capped_size]
+
+        # Gross income limit is 185% of need standard
+        gross_income_limit = need_standard * p.income.gross_income_limit_rate
+
+        return gross_income <= gross_income_limit
diff --git a/policyengine_us/variables/gov/states/ms/dhs/tanf/eligibility/ms_tanf_resources_eligible.py b/policyengine_us/variables/gov/states/ms/dhs/tanf/eligibility/ms_tanf_resources_eligible.py
new file mode 100644
index 00000000000..78c88b87091
--- /dev/null
+++ b/policyengine_us/variables/gov/states/ms/dhs/tanf/eligibility/ms_tanf_resources_eligible.py
@@ -0,0 +1,19 @@
+from policyengine_us.model_api import *
+
+
+class ms_tanf_resources_eligible(Variable):
+    value_type = bool
+    entity = SPMUnit
+    label = "Mississippi TANF resources eligibility"
+    definition_period = MONTH
+    defined_for = StateCode.MS
+    reference = (
+        "https://www.mdhs.ms.gov/wp-content/uploads/2018/02/MDHS_TANF-Eligibility-Flyer.pdf",
+        "https://www.law.cornell.edu/regulations/mississippi/Miss-Code-tit-18-pt-19",
+        "https://www.mdhs.ms.gov/help/tanf/",
+    )
+
+    def formula(spm_unit, period, parameters):
+        p = parameters(period).gov.states.ms.dhs.tanf.resources
+        household_assets = spm_unit("spm_unit_assets", period.this_year)
+        return household_assets <= p.limit
diff --git a/policyengine_us/variables/gov/states/ms/dhs/tanf/ms_tanf.py b/policyengine_us/variables/gov/states/ms/dhs/tanf/ms_tanf.py
new file mode 100644
index 00000000000..34f9ba67265
--- /dev/null
+++ b/policyengine_us/variables/gov/states/ms/dhs/tanf/ms_tanf.py
@@ -0,0 +1,19 @@
+from policyengine_us.model_api import *
+
+
+class ms_tanf(Variable):
+    value_type = float
+    entity = SPMUnit
+    label = "Mississippi TANF"
+    unit = USD
+    definition_period = MONTH
+    defined_for = "ms_tanf_eligible"
+    reference = (
+        "https://www.mdhs.ms.gov/wp-content/uploads/2018/02/MDHS_TANF-Eligibility-Flyer.pdf",
+        "https://www.law.cornell.edu/regulations/mississippi/Miss-Code-tit-18-pt-19",
+    )
+
+    def formula(spm_unit, period, parameters):
+        maximum_benefit = spm_unit("ms_tanf_maximum_benefit", period)
+        countable_income = spm_unit("ms_tanf_countable_income", period)
+        return max_(maximum_benefit - countable_income, 0)
diff --git a/policyengine_us/variables/gov/states/ms/dhs/tanf/ms_tanf_countable_income.py b/policyengine_us/variables/gov/states/ms/dhs/tanf/ms_tanf_countable_income.py
new file mode 100644
index 00000000000..b5eed6bf585
--- /dev/null
+++ b/policyengine_us/variables/gov/states/ms/dhs/tanf/ms_tanf_countable_income.py
@@ -0,0 +1,19 @@
+from policyengine_us.model_api import *
+
+
+class ms_tanf_countable_income(Variable):
+    value_type = float
+    entity = SPMUnit
+    label = "Mississippi TANF countable income"
+    unit = USD
+    definition_period = MONTH
+    defined_for = StateCode.MS
+    reference = (
+        "https://www.mdhs.ms.gov/wp-content/uploads/2018/02/MDHS_TANF-Eligibility-Flyer.pdf",
+        "https://www.law.cornell.edu/regulations/mississippi/Miss-Code-tit-18-pt-19",
+    )
+    # NOTE: Mississippi has 6-month and 3-month total earned income disregards
+    # that cannot be tracked in PolicyEngine. This simplified implementation
+    # uses gross income without those time-limited disregards.
+
+    adds = ["tanf_gross_earned_income", "tanf_gross_unearned_income"]
diff --git a/policyengine_us/variables/gov/states/ms/dhs/tanf/ms_tanf_maximum_benefit.py b/policyengine_us/variables/gov/states/ms/dhs/tanf/ms_tanf_maximum_benefit.py
new file mode 100644
index 00000000000..b8c322e976a
--- /dev/null
+++ b/policyengine_us/variables/gov/states/ms/dhs/tanf/ms_tanf_maximum_benefit.py
@@ -0,0 +1,26 @@
+from policyengine_us.model_api import *
+
+
+class ms_tanf_maximum_benefit(Variable):
+    value_type = float
+    entity = SPMUnit
+    label = "Mississippi TANF maximum benefit"
+    unit = USD
+    definition_period = MONTH
+    defined_for = StateCode.MS
+    reference = (
+        "https://www.mdhs.ms.gov/wp-content/uploads/2018/02/MDHS_TANF-Eligibility-Flyer.pdf",
+        "https://billstatus.ls.state.ms.us/documents/2021/html/SB/2700-2799/SB2759SG.htm",
+        "https://www.law.cornell.edu/regulations/mississippi/Miss-Code-tit-18-pt-19",
+    )
+
+    def formula(spm_unit, period, parameters):
+        p = parameters(period).gov.states.ms.dhs.tanf.payment_standard
+        size = spm_unit("spm_unit_size", period.this_year)
+
+        # Payment standard: first_person + second_person (if size >= 2) + additional_person * (size - 2)
+        first_person = p.first_person
+        second_person = where(size >= 2, p.second_person, 0)
+        additional_persons = max_(size - 2, 0) * p.additional_person
+
+        return first_person + second_person + additional_persons
diff --git a/uv.lock b/uv.lock
index 8092e2f4e8e..e1974756b97 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1534,7 +1534,7 @@ wheels = [
 
 [[package]]
 name = "policyengine-us"
-version = "1.477.0"
+version = "1.478.0"
 source = { editable = "." }
 dependencies = [
     { name = "microdf-python" },