$21 an hour by pay period
Before taxes, working 40 hours a week all year:
| Period | Pay before tax |
|---|---|
| Year (2,080 hours) | $43,680 |
| Month | $3,640.00 |
| Every two weeks (80 hours) | $1,680.00 |
| Twice a month | $1,820.00 |
| Week (40 hours) | $840.00 |
| Day (8 hours) | $168.00 |
The quick way to estimate: double the hourly rate and add three zeros. $21 × 2 = 42, so about $42,000 a year. The exact figure, $43,680, is a bit higher because a year has 2,080 work hours, not 2,000.
After taxes
For a single filer in 2026 with the standard deduction and no state income tax, $43,680 a year leaves about $37,277, or $1,433.73 every two weeks. Federal income tax takes $3,062 and Social Security and Medicare take $3,342. Married filing jointly on one income, take-home rises to about $39,190.
State tax, 401(k) contributions and health insurance lower this further. See take-home pay for your state with the paycheck calculator by state.
Part-time and longer weeks
| Hours | Per week | Per year |
|---|---|---|
| 20 hours a week | $420.00 | $21,840 |
| 25 hours a week | $525.00 | $27,300 |
| 30 hours a week | $630.00 | $32,760 |
| 35 hours a week | $735.00 | $38,220 |
| 45 hours a week | $945.00 | $49,140 |
| 50 hours a week | $1,050.00 | $54,600 |
Hours over 40 a week usually earn time-and-a-half, $31.50 an hour, so a 45-hour week pays $997.50, not $945.00.
What $21 an hour can afford
A common guideline is to spend no more than 30% of gross income on rent, which at $43,680 a year is about $1,092 a month. Lenders typically cap a mortgage payment at 28% of gross income, about $1,019 a month; see how much house you can afford.