Tax Refund Calculator
Raise or lower your W-4 withholding and this part changes next paycheck.
No W-4 change can move this part — the tax code only pays these credits when you file.
Show the math, step by step
- 2025 标准扣除 single $15,000 — Cross-checked against thetaxcalculator Cross-checked · primary verification pending
- 2026 标准扣除 single $15,750（估计） — Competitor estimate — none of the 13 reviewed sites is IRS first-hand verified Pending primary verification
- 2025 SS wage base $176,100 — SSA announcement (2025); 2026 pending SSA release Cross-checked · primary verification pending
- SS 6.2% + Medicare 1.45%（Medicare 附加 0.9% >$200k 为 V2） — IRC §3101/§3111 (statutory rates, stable long-term) IRS-sourced
- OBBBA：tips $25k / overtime $12.5k / car interest / QBI 20% / CTC $2,200（ACTC $1,700） — OBBBA as transcribed by competitor implementations; IRS guidance pending Pending primary verification
We flag every constant whose primary-source verification is still pending and update within 48 hours of each IRS annual release. See our methodology.
This is an estimate for planning only — not tax advice. Tax law changes and individual circumstances vary; consult a qualified professional for decisions.
A tax refund is not a windfall — it is your own money coming back. This calculator estimates your federal refund for tax year 2026 (switchable back to 2022) from the same numbers on your pay stub: wages, federal income tax withheld, filing status, and dependents. It is free, requires no signup, and runs entirely in your browser. Every step of the math is expandable, every constant shows its IRS source and verification date, and the same inputs always produce the same answer — save a snapshot as a URL and it replays identically on any device.
Most refund estimators give you one big number. That single number hides the two very different things inside it, and the confusion between them is the most common reason people get refund estimates wrong — especially lower-income filers with children.
Component 1 — the withholding gap (adjustable). This is the difference between your actual federal income tax for the year and the federal income tax your employer withheld. If you over-withheld, this part of the refund is money you lent the government at zero interest — and it is the part you can change, by filing a new W-4. See Tax Withholding Calculator for the four levers.
Component 2 — refundable credits (only claimable at filing time). Credits like the Earned Income Tax Credit (EITC), the Child Tax Credit (CTC), and the Additional Child Tax Credit (ACTC) can make your refund larger than anything you paid in. A community-documented case: a filer with zero withholding still received a $4,184 refund purely from refundable credits. No W-4 adjustment can deliver this money earlier — the tax code simply does not pay these credits monthly. We label this part explicitly as "only claimable when you file."
Why the split matters: community discussions about refunds split into two camps. The "interest-free loan" camp says a big refund is your money sitting with the government, so you should minimize it. The "forced savings" camp (and refundable-credit filers) replies that for many households a large refund is unavoidable or even desirable, and that people who would otherwise spend the money are better off over-withholding. Estimators that blend both components into one number effectively answer a question nobody asked. We show both parts side by side so you can see which one is actually driving your result.
Filing status. Single, married filing jointly, married filing separately, or head of household. Each status has its own bracket thresholds and standard deduction; the calculator re-runs everything when you switch.
Wages (W-2 box 1). Your federal-taxable wages for the year, or enter hourly rate × hours if you prefer. Box 1 is what the refund math runs on.
Federal income tax withheld (W-2 box 2). The total federal income tax taken out of your paychecks so far (plus any prior jobs this year). This is the only withholding that participates in your refund.
Social Security and Medicare withheld (W-2 boxes 4 and 6). Social Security (6.2%) and Medicare (1.45%) withholding do not come back in your refund. Pay stubs often merge them into one "FICA" line, which is why so many people misread a stub and panic. We display them separately so the refund number only reflects federal income tax. As a cross-check anchor: FICA on $50,000 of wages is $3,825.
Dependents. Drives the Child Tax Credit field (CTC is $2,200 per qualifying child under current law) and flags potential refundable-credit components.
State. Select your state to append the state estimate in the combined view (10 states supported in v1 — see State Tax Calculator).
Tax year. 2022–2026. Brackets and standard deductions switch per year; 2026 constants are marked "pending IRS first-hand verification" while we finish the primary-source check.
OBBBA fields (2026). Qualified tips, qualified overtime, qualified car loan interest, and QBI deduction — the newer-law fields most free calculators skip entirely. Each is a separate, labeled input.
- Taxable income = wages − standard deduction. For 2025 single filers the standard deduction is $15,000 (verified), so $50,000 of wages becomes $35,000 of taxable income.
- Federal income tax = bracket-by-bracket sum on taxable income. Verified anchor: 2025 single, $50,000 wages → $3,961.50 of federal income tax.
- Refund = (federal income tax − box 2 withholding − nonrefundable credits) → shown as the withholding gap, plus refundable credits (EITC/CTC/ACTC) → shown separately as claimable at filing.
- 2026 single brackets: 12,400 / 50,400 / 105,700 / 201,775 / 256,225 / 640,600 — status: pending IRS first-hand verification (Rev. Proc. cross-check in progress).
- 2025 single brackets (verified by cross-calculator agreement): 11,925 / 48,475 / 103,350 / 197,300 / 250,525 / 626,350; standard deduction $15,000.
- Sources: IRS annual revenue procedures and Publication 505; per-constant verification dates shown in the page's constant-check module.
Community-documented cases: the IRS's own estimator has produced duplicated-income results (a $107,000 phantom income) and $8,000–$11,000 refund predictions that filers reported as impossible; two major tax-prep brands differed by $200+ on identical inputs; three popular tools turned the same numbers into 145, 540, and 0. Our stance is reproducibility: same inputs, same output, every intermediate value expandable, and we do not inflate estimates to keep you on the page.
This calculator produces an estimate for planning purposes. It is not tax advice, and it is not a substitute for filing an accurate return.
Frequently asked
**Why is my refund so high when I claim nothing on my W-4?**
Low withholding settings over-collect during the year, and refundable credits (EITC/CTC/ACTC) stack on top at filing time. The split view shows exactly which portion is adjustable withholding and which is credits — see our guide for both schools of thought.
Does Social Security or Medicare withholding come back in my refund? No. Only federal income tax withholding (W-2 box 2) participates in your refund. Social Security (6.2%) and Medicare (1.45%) are separate payroll taxes — a frequent source of stub-reading confusion.
Can I get a refund if nothing was withheld from my paychecks? Yes, if you qualify for refundable credits. A documented community case received $4,184 with zero withheld. This component is labeled "claimable at filing" in our split view because no W-4 change can bring it forward.
Why does your number differ from another calculator? Usually a stale year (some large calculators still run 2024 or 2025 tables), a missing field, or an estimator that blends credits into the headline. Ours is year-switchable and shows every step; identical inputs always replay identically from a snapshot URL.
Is this really free? Yes — the phrase "tax refund calculator" is searched about 74,000 times a month largely because people want a fast answer without an account. No signup, no email, no saved server data; your inputs never leave the browser.