The calculation, step by step
- Gross income test. Earned plus unearned income is compared with your state’s gross screen — 130% of the poverty guideline federally, or your state’s higher BBCE percentage (up to 200%). Skipped when a household member is 60+ or disabled.
- Deductions. 20% of earned income, the standard deduction, dependent care, court-ordered child support paid, and medical expenses over $35 for elderly/disabled members are subtracted.
- Excess shelter deduction. Housing plus utility costs above half of your adjusted income are deducted, capped at $744 (48 states) unless the household includes an elderly or disabled member.
- Net income test. The result must be at or below 100% of the poverty guideline for your household size.
- Resource screen. Where your state applies one: federal limits are $3,000 / $4,500; BBCE states often have none, and a few use their own limits (e.g., Texas $5,000, Nebraska $25,000).
- Benefit amount. Maximum allotment for your household size and region, minus 30% of net income (rounded up). Eligible 1–2 person households get at least the $24 minimum.
Regional tables
The calculator uses separate USDA tables for the 48 states + D.C., urban Alaska, two rural Alaska zones, Hawaii, Guam, and the U.S. Virgin Islands — each with its own income limits, standard deductions, shelter caps, and allotments.
A complete walkthrough
Take a household of 4 in the 48 states: $1,500 in monthly wages, $550 in Social Security, $362 in child care, $700 rent, no elderly or disabled member.
- Gross test: $1,500 + $550 = $2,050, compared against the $3,483 limit for a household of 4 — passes.
- Deductions: 20% of wages is $300; the standard deduction for 4 is $223; child care adds $362. Adjusted income: $2,050 − $885 = $1,165.
- Shelter: half of adjusted income is $582.50. Rent of $700 exceeds it by $117.50 — that becomes the shelter deduction (under the $744 cap).
- Net test: $1,165 − $117.50 = $1,047.50, against the $2,680 net limit — passes.
- Benefit: 30% of net income, rounded up, is $315. The maximum for 4 is $994, so the estimate is $994 − $315 = $679 per month — about $8,148 per year.
This exact case is one of our automated test scenarios: the calculator must produce $679 for it on every code change, or the site cannot be published.
How we keep it accurate
Every rule in this calculator is covered by an automated test suite — over 300 assertions that run before any update goes live. They pin the USDA worked example to the dollar, every state and territory to its correct table, edge cases like the $24 minimum benefit and benefit rounding, the elderly/disabled special rules, and the verified Standard Utility Allowance values for California, New York, Texas, and Missouri. If a single number drifts from the official tables, the build fails.
Content quality is gated the same way: an automated check measures every state page for depth and rejects any two pages that are too similar to each other, so you will not find copy-pasted state pages here.
Known limitations
- Utilities: the calculator uses the actual monthly utility amount you enter. Many states instead apply Standard Utility Allowances (SUAs) — fixed amounts that can be higher or lower than your bills — so the official shelter deduction may differ.
- Special situations: student, work-requirement (ABAWD), noncitizen, and mixed-household rules are flagged for review, not decided. Only your SNAP office can decide them.
- County variations: some states have county-level waivers or practices that a simplified screen cannot capture.
Sources and update policy
Values come from the USDA FY 2026 COLA memo and SNAP eligibility rules, and state rules from the USDA BBCE state options report and state agency sites. We re-verify every table when USDA publishes the annual COLA (each October) and review state links quarterly. See Sources and Updates.