Is an Extra Shift Worth It After Tax? The Math for Nurses

• The numbers
• Overtime
• PRN and gig apps
• 1099 taxes
• Is it worth it?

What one extra shift actually pays

Here’s one 12-hour shift at the median registered nurse’s base rate, $46.90 an hour, in the 22% federal bracket, with no state income tax. The only thing that changes is how the shift is paid.

W-2: 22% federal income tax plus 7.65% Social Security and Medicare. Overtime rows take the federal overtime deduction on the extra half of time-and-a-half. 1099: self-employment tax of 15.3% on 92.35% of the pay, plus 22% income tax after deducting half of that; it leaves out the qualified business income deduction and any business costs. No state or local tax. 2026 rates.

Where a 12-hour shift at $46.90 an hour goes

What you keep, after federal income tax and payroll tax

• You keep
• Federal income tax
• Payroll tax

Payroll tax is Social Security and Medicare on W-2 pay, or self-employment tax on 1099 pay. 22% federal bracket, no state income tax, 2026 rules, rounded to the dollar. The overtime rows assume you're paid hourly and the overtime is required by the federal overtime law (FLSA), so the extra half is deductible for tax years 2025 through 2028, up to $12,500 and phasing out above $150,000 of MAGI. The number at the end of each bar is the gross pay; the number inside is what you keep.

Two things stand out. Overtime is by far the best-paid extra work, and the 1099 shift keeps the least, even at the same hourly rate. If you work three 12s, notice the third row: a fourth shift that week only becomes overtime after hour 40, so 4 of its 12 hours are paid at your regular rate.

Run your own rate and bracket in the extra shift calculator.

Overtime: the best-paid extra shift

Federal law requires time-and-a-half once you pass 40 hours in a workweek. Hospitals can instead use an 8-and-80 schedule, paying overtime after 8 hours in a day or 80 hours in two weeks, if employees agree to it ahead of time.

Who gets it: registered nurses paid by the hour should receive overtime pay, according to the Department of Labor. Salaried nurses paid at least $684 a week can be classified as exempt, and so can many salaried clinicians, including NPs, PAs and pharmacists. If you’re exempt, extra-shift pay doesn’t qualify for the overtime deduction, even if your employer pays a premium for it.

The new federal deduction. For tax years 2025 through 2028, you can deduct the overtime premium from federal income tax:

• Only the extra half counts. On $70.35 an hour of overtime pay, $23.45 is deductible. Overtime that only state law, a union contract or hospital policy requires, such as some daily overtime or double time, doesn’t qualify. Premium paid under a hospital’s 8-and-80 schedule does.
• Up to $12,500 a year ($25,000 on a joint return). It shrinks by $100 for every $1,000 of modified adjusted gross income over $150,000 ($300,000 joint). Married couples must file jointly to claim it.
• Payroll taxes still apply. Social Security, Medicare and withholding come out of overtime as usual. Your state may not follow the deduction.
• It lowers the income you pay tax on, but not your adjusted gross income. You claim it on Schedule 1-A whether or not you itemize. So it doesn’t change the income figure used for Roth IRA limits or income-based student loan payments.
• It’s not for 1099 work. Independent contractors aren’t owed overtime, so there’s no premium to deduct.

On the all-overtime shift above, the deductible part is $281, which saves about $62 in federal tax. As long as you’re under the cap and the phase-out, the federal income tax on an overtime shift is the same as on a regular one, and the extra half reaches you minus only Social Security and Medicare. Employers have to report qualified overtime separately starting with 2026 pay, so check your year-end paperwork.

PRN, per diem and gig apps

PRN or per diem on a W-2 works like the regular-rate row. Your employer withholds tax and pays its half of Social Security and Medicare. Overtime only kicks in if you pass 40 hours that week for that employer.

Gig apps usually pay on a 1099. Nursa, for example, says clinicians who book shifts through it are independent contractors and withholds no tax. In a December 2024 Nursa survey of more than 2,000 nurses and aides, 72% also held a full-time or part-time job, so most people using these apps are doing exactly this: extra shifts on top of a staff job.

The 1099 trade is flexibility for paperwork and a bigger tax bill. Nobody pays the employer half of Social Security and Medicare, nobody withholds income tax, and you’re responsible for paying it during the year.

If it’s 1099: set the tax aside

My take: move a fixed share of every 1099 payment into a separate savings account the day it lands. In the 22% federal bracket, about 35% covers self-employment tax and federal income tax; add your state’s rate. Pay it during the year with quarterly estimates, or by raising the withholding at your W-2 job. A solo 401(k) can shelter part of the profit.

Next: set-aside rates by bracket, due dates and the solo 401(k)

When an extra shift isn’t worth it

• When you’re too tired to work safely. In a study of 393 hospital nurses, the odds of an error were about three times higher once a shift ran past 12.5 hours, and working overtime raised them too.
• When the money gets spent, not invested. The $232,000 above only exists if the $396 goes into an account on payday.
• When it costs you most of the pay. Extra childcare, a long drive or takeout because you’re wiped out can eat a large share of $396.
• When you’re on an income-driven student loan plan. Extra pay raises your adjusted gross income, which can raise next year’s payment. The overtime deduction doesn’t change that.
• When it’s 1099 and you didn’t set the tax aside. A surprise bill in April undoes a lot of good shifts.

My take: spend shifts like money

Every shift trades hours of your life for dollars, and FIRE is about buying those hours back later. Nurses working shifts of 10 hours or longer were up to two and a half times more likely to report burnout, in a study of nearly 23,000 RNs. Burning out early can cost you far more than the shifts earned.

So pick up extra shifts on purpose: for a set number of months, toward a goal you can name, with the pay invested automatically. A year of one extra shift a month to fill a Roth IRA is a great trade. Picking up every shift you’re offered because the app keeps asking usually isn’t.

FAQ

I’m an emergency physician, not a financial advisor, CPA or attorney. This is education, not personalized advice. Tax law changes, the overtime deduction ends after 2028 unless Congress extends it, and your situation is different from the examples here. Talk to a professional before acting on anything you read.