Pay stub checker
Enter your salary, state and the tax amounts from one paycheck. The page shows which lines match the calculator and what usually explains a difference.
Your stub vs the calculator
| Line | Your stub | Calculator | Result |
|---|---|---|---|
| Federal income tax | $0.00 | $193.08 | Stub is lower by $193.08 Federal withholding follows your W-4: filing status, the two-jobs box, credits, extra withholding, and pre-tax deductions all move it. |
| Social Security | $0.00 | $143.08 | Stub is lower by $143.08 Social Security is 6.2% of FICA wages. Pre-tax health premiums lower those wages, and it stops at the yearly wage base. |
| Medicare | $0.00 | $33.46 | Stub is lower by $33.46 Medicare is 1.45% of FICA wages. It differs from Social Security only above the wage base. |
| Texas income tax | $0.00 | $0.00 | Matches (within $1) |
Per paycheck, 2026, with a blank 2020 W-4 and no pre-tax deductions. A difference is usually your W-4, benefits or a local tax, not an error. Same engine and IRS Publication 15-T as the paycheck calculator.
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Questions
How do I check my pay stub?
Copy the federal, Social Security, Medicare and state tax amounts from one paycheck, enter your salary and state, and compare. Social Security should be 6.2% and Medicare 1.45% of the pay they apply to.
Why would my stub differ?
Your W-4, pre-tax benefits, a local tax or a different state form. This page assumes a blank 2020 W-4 and no pre-tax deductions, so a difference is a prompt to look, not proof of an error.
Does it store my numbers?
No. It runs in your browser.