How to Calculate a Nurse's Paycheck (Differentials, OT, 12-Hour Shifts)

Start with the layers

A staff nurse's hourly earnings stack like this: base rate → + night differential for hours in the night window → + weekend differential for Saturday/Sunday hours → + charge/preceptor add-on when applicable. Each layer applies to specific HOURS, not to the whole shift.

Example: $38.50 base, +$4.00 nights (7 PM–7 AM), +$3.00 weekends. A Friday 7 PM–7 AM shift: all 12 hours get the night diff, and the hours after midnight (Saturday) also get the weekend diff. Your 3 AM hour pays $45.50.

Charge, preceptor, on-call and call-back pay

Charge and preceptor pay are hourly add-ons for the hours you hold the role — typically $1.00–$2.50/hr — and they stack on the differentials. Because they're paid for hours worked, they belong in your regular rate for overtime like everything else.

On-call pay is different: it's a small flat hourly amount (often $2–$6/hr) for being reachable, not for working. If you're called in, call-back pay kicks in — usually a guaranteed minimum (two to four hours) at 1.5× or more, even if you're sent home after 45 minutes. On-call hours themselves don't count as hours worked toward the 40 unless you're so restricted you can't use the time for yourself; the called-in hours do count, and often push the week into overtime.

Overtime on self-scheduled twelves

Most units schedule in 36/48 alternations or straight 36s with pickup incentives. Federal OT applies past 40 hours per defined workweek at 1.5× your regular rate including differentials. A 48-hour week of nights at the example rates has 8 overtime hours, and the premium is computed on the blended rate of everything you earned that week — not on base, and not on the rate of whichever shift happened to be your fourth.

Hospitals on 8/80 plans instead owe OT past 8 hours in any day — which turns every 12 into 8 regular + 4 OT. Know which system your facility uses; the same schedule pays differently under each. Pickup bonuses promised in advance (the $100 for grabbing Saturday) also have to be spread into the regular rate for the week they're earned.

A worked biweekly check

Two weeks of nights at $38.50 base: +$4.00 on every hour, +$3.00 on the weekend hours, +$2.00 for one charge shift each week, with a flat 25% withholding estimate for take-home. Week one is three shifts; week two is four, so it carries the overtime:

Per diem and travel nurse differences

Per diem (PRN) nurses trade benefits and guaranteed hours for a higher base — often 20–40% above staff rate — and frequently a flatter structure: some facilities pay per diem staff the same differentials, others fold everything into the rate. Overtime still applies past 40 hours in the week if you pick up enough, at the regular rate including whatever differentials you do get.

Travel nurses are paid a taxable hourly rate plus tax-free stipends for housing and meals (if you maintain a tax home). The taxable rate is often low, which makes overtime on a travel contract worth less than it looks — 1.5× applies only to the taxable hourly, not the stipend. Read the contract for the guaranteed hours, the overtime rate, and whether missed shifts claw back the stipend before you compare it to a staff offer.

Pickup, incentive and critical-staffing pay

Open shifts come with sweeteners: a flat pickup bonus ($100–$300 per shift is common), an incentive rate that adds a few dollars an hour to the shift, or a 'critical staffing' or 'crisis' rate that replaces your base for that shift entirely. All three are pay for hours worked, so all three belong in the regular rate for the week, which raises the overtime rate if the pickup pushed you past 40. Flat bonuses are spread across the week's hours; incentive rates are just a higher rate on those hours.

The catch to read for is the eligibility clause — many incentive programs pay only if you complete the full shift and have no unscheduled absences in the pay period, and some exclude the bonus from the overtime calculation in a way the FLSA doesn't allow. Compare the incentive line on your stub to what was promised.

Estimating take-home

Gross-to-net depends on your W-4, state, and pretax deductions (401k/403b, insurance). A rough planning number: multiply gross by 0.72–0.80; the table above uses 0.75. It's an estimate — your paystub is the truth — but it turns 'I picked up Saturday' into an actual dollar figure for your budget.

Or paint it instead

ShiftCheck was built nurse-first: set your base rate, night window, weekend and holiday premiums once; paint D/E/N chips on the calendar (or stamp your rotation); and the header shows the month's gross, overtime hours, and an estimated take-home — before the schedule is even final. Picking up a shift shows exactly what it adds.

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