The formula, written out
Qualified overtime compensation = regular rate × 0.5 × FLSA overtime hours. The IRS states it per workweek — hours over 40 in that workweek, times one-half, times your regular rate for that workweek — and the year is the sum of the weeks. Annualising it the way the examples above do is a planning shortcut that assumes a steady schedule and a steady rate. If your rate changed mid-year, or your overtime is lumpy, the weekly computation is the accurate one.
One subtlety worth knowing: your “regular rate” is not always your base hourly rate. Under the FLSA it includes most non-discretionary pay — production bonuses, shift differentials, commissions — spread across the hours you worked. A non-discretionary bonus can therefore raise both your overtime pay and your qualified premium above what your base rate alone would suggest.
How much you get back is not the deduction
This is where the name misleads people most. A deduction of $2,860 does not put $2,860 in your pocket. It removes $2,860 from the income your federal tax is computed on, so it is worth your marginal rate: $343 at 12%, $629 at 22%, $686 at 24%. And it only touches federal income tax — Social Security and Medicare are still withheld on every overtime dollar, and unless your state passed its own conforming law, your state still taxes all of it.
How much overtime does it take to reach the cap?
More than most people work. At the median wage on this site's grid, $27 an hour, you would need 18.5 overtime hours every week for 50 weeks to reach $12,500. At $30 an hour it takes 16.7 hours a week; at $50 an hour, 10. Across all 31 wages this site publishes, only 1 reaches the cap on a 10-hour-a-week, 50-week schedule. For most hourly workers the cap is irrelevant; the binding constraint is how much overtime there is to work.
Check your own numbers
Run your rate and hours through the no tax on overtime calculator to get the deduction and the tax saving together, or start from gross pay with the time and a half calculator. For a single rate, the per-wage pages show the rate math from $12 to $50 an hour. If the result surprises you, check whether you qualify and the income limits before assuming the figure is yours.