$21 an hour is $43,680 a year before tax, and about $36,269 after modelled 2026 tax for a single filer in Iowa.
Single filer, no pre-tax deductions, 40 hours a week for 52 weeks.
| Category | Annual | Monthly | Per hour | Share of gross |
|---|---|---|---|---|
| Gross pay | $43,680 | $3,640 | $21.00 | 100% |
| Federal income tax | $3,062 | $255 | $1.47 | 7% |
| Social Security | $2,708 | $226 | $1.30 | 6.2% |
| Medicare | $633 | $53 | $0.30 | 1.5% |
| Iowa income tax | $1,008 | $84 | $0.48 | 2.3% |
| Estimated take-home | $36,269 | $3,022 | $17.44 | 83% |
Across 2,080 paid hours a year at 40 hours a week. State income tax only — local and municipal taxes are excluded.
The $16,100 standard deduction leaves $27,580 of taxable income, which puts the last dollar in the 12% federal bracket. Only $15,180 of it is actually taxed at 12% — the income below $12,400 is taxed at the lower rates first, which is why the effective rate lands well under the bracket number. The 12% band runs to $50,400, so a raise of about $22,820 would be needed before any dollar is taxed at 22%.
Iowa taxes wage income at a single 3.8% rate rather than a graduated schedule, so the state share does not change shape as the salary rises. After $16,100 of deductions the state taxes $27,580, producing $1,008 — 2.31% of gross pay.
Federal income tax of $3,062 on $43,680 of gross pay is 7.01% of the salary, against a 12% marginal bracket — a gap of about 5.0 points. The bracket describes the next dollar earned, not the pay already earned, and quoting the bracket as the tax rate overstates the bill by $2,180 at this salary.
A dollar more an hour is $2,080 more a year at 2,080 paid hours. Against a combined marginal rate of about 23.45% -- the 12% federal band, Iowa's 3.8%, 1.45% Medicare and 6.2% Social Security -- roughly $1,592 of that reaches the bank, or about $0.77 of the extra dollar.
$21 an hour across 52 weeks, at different weekly hours.
| Hours a week | Per week | Per year |
|---|---|---|
| 20 hours | $420 | $21,840 |
| 25 hours | $525 | $27,300 |
| 30 hours | $630 | $32,760 |
| 35 hours | $735 | $38,220 |
| 40 hours | $840 | $43,680 |
| 45 hours | $945 | $49,140 |
| 50 hours | $1,050 | $54,600 |
$21 an hour in Iowa works out to about $36,269 a year after modelled 2026 federal, FICA, and state tax for a single filer — roughly $17.44 for every hour worked.
$21 an hour is $43,680 a year before tax at 40 hours a week for 52 weeks.
About 17% of gross pay, combining federal, FICA, and Iowa state tax for a single filer with no pre-tax deductions.
40 paid hours a week for 52 weeks, with no unpaid leave or overtime premium. Take-home is a 2026 estimate for a single filer with no pre-tax deductions and excludes local taxes.
Iowa’s tax treatment traces to Iowa DOR — 2026 withholding formula. Sources were reviewed through August 9, 2026.
Read the calculation methodology