After tax income is what is left after federal, state, FICA (or equivalent), and any pre tax deductions are removed from gross pay. It is the number that matters for budgeting, not the headline salary.
Uses the 2024 US federal income tax brackets. Does not include state, FICA, or local taxes.
| Bracket | Rate | Single | MFJ | HOH |
|---|
After-tax income is what is left after federal income tax, state income tax, FICA (Social Security plus Medicare), and any pre-tax deductions are removed from your gross salary. It is the only figure that matters for budgeting, mortgage qualification, and FIRE-style savings rate calculations; the headline gross salary is mostly a benchmark for negotiation.
Taxable income = Gross - Pre-tax 401(k) - HSA - FSA - Pre-tax health premium Federal tax = sum of (bracket bands x rates) on taxable income After-tax = Gross - Pre-tax deductions - Federal - State - FICA - Post-tax FICA = 6.2% Social Security (cap $176,100) + 1.45% Medicare
A Texas single filer earns $100,000 in 2026 and contributes 10 percent to a traditional 401(k). Texas has no state income tax. Calculate after-tax income step by step:
| Rate | Taxable income (single) | Taxable income (MFJ) | Taxable income (HoH) |
|---|---|---|---|
| 10% | $0 to $11,925 | $0 to $23,850 | $0 to $17,000 |
| 12% | $11,925 to $48,475 | $23,850 to $96,950 | $17,000 to $64,850 |
| 22% | $48,475 to $103,350 | $96,950 to $206,700 | $64,850 to $103,350 |
| 24% | $103,350 to $197,300 | $206,700 to $394,600 | $103,350 to $197,300 |
| 32% | $197,300 to $250,525 | $394,600 to $501,050 | $197,300 to $250,500 |
| 35% | $250,525 to $626,350 | $501,050 to $751,600 | $250,500 to $626,350 |
| 37% | $626,350+ | $751,600+ | $626,350+ |
FICA in 2026: Social Security 6.2 percent on the first $176,100, Medicare 1.45 percent on all wages, plus 0.9 percent Additional Medicare on employee wages above $200,000 (single) or $250,000 (joint).
Working calculator with federal + state + FICA layers and pre tax deduction modeling.
Open Take Home Salary Calculator →It depends on which retirement account. Pre-tax 401(k), traditional IRA, HSA, and FSA contributions are deducted BEFORE the tax calculation, so they reduce both your taxable income and your after-tax cash. Roth 401(k) and Roth IRA contributions are made with AFTER-tax dollars, so they reduce after-tax cash but not taxable income. In both cases the money still ends up working for retirement; the timing of the tax differs.
After-tax income is gross minus all taxes and pre-tax deductions. Disposable income (in the strict definition) is after-tax income minus non-discretionary fixed expenses like rent or mortgage, utilities, insurance, and debt minimums. So disposable income is always less than after-tax income. The IRS and BEA use the terms more loosely, sometimes treating them as synonyms for personal income net of taxes.
Federal withholding on bonuses under $1 million is a flat 22 percent (37 percent above that). Social Security (6.2 percent up to the $176,100 wage base) and Medicare (1.45 percent, plus 0.9 percent above $200K) also apply. Actual federal tax is reconciled at year end based on your marginal bracket, so high earners typically owe more and low earners get refunds because the flat 22 percent over-withheld.
California layers a progressive state income tax (1 to 13.3 percent) plus a 1.1 percent State Disability Insurance contribution on top of federal and FICA. Texas, Florida, Nevada, Tennessee, Washington, South Dakota, Wyoming, Alaska, and New Hampshire (since 2025) have no state income tax. For a $100,000 single filer the gap is roughly $67,000 net in California vs $76,000 in Texas, before adjusting for cost of living.