Shift Differential Take-Home Calculator
Enter your base rate, night hours, and weekend premium to see blended overtime pay, gross wages, and what the differential is worth after 2026 taxes.
Shift Differential Take-Home Calculator
Your shifts
Enter your base rate and a typical week, then add your night and weekend premiums.
Count each hour once. If your employer stacks a night and a weekend premium on the same shift, enter those hours in one bucket with the combined differential.
That is more than there are hours in a week.
Simplified effective-rate estimate, not a bracket-by-bracket state return.
Advanced: pre-tax deductions and the overtime deduction
401(k) deferrals, health premiums, HSA. These reduce federal and state taxable wages here, but not FICA wages.
Section 225(e) requires a joint return, so married filing separately is not eligible for the overtime deduction at all. The toggle is switched off and locked for that status.
Your wages pass the $184,500 Social Security wage base, so the top slice of your pay skips the 6.2 percent. That is why the cents kept per differential dollar rises above the cap.
2026 estimate using the federal brackets, the $184,500 Social Security wage base, and a simplified state effective rate. Pre-tax deductions here reduce federal and state taxable wages but not FICA wages, which is right for 401(k) deferrals and slightly conservative for Section 125 items such as health premiums, HSA, and FSA. Not filing-grade: it excludes local taxes, credits, itemized deductions, and state-specific items such as CA SDI.
How shift differential pay works: flat dollars or a percentage of base
A shift differential is extra pay for working hours nobody wants: overnights, weekends, holidays, rotating shifts. It comes in exactly two shapes, and 29 CFR 778.207(b) names both. A flat adder tacks a fixed amount onto your hourly rate, so $34.00 base with a $4.00 night differential pays $38.00 for every night hour. A percentage differential multiplies your base, so a 12 percent night premium on the same rate pays $38.08. The toggles above let you enter whichever one your employer uses, for nights and weekends separately.
Market practice, not law, sets the amounts. Night differentials commonly run about 10 to 15 percent of base, or roughly $2 to $7 an hour, with weekends and holidays paying more and healthcare sitting at the top of the range. BLS counts shift differentials as the least common form of supplemental pay, concentrated in healthcare practitioner and healthcare support occupations. The one genuinely fixed benchmark is federal: OPM pays Federal Wage System employees 7.5 percent for the second shift and 10 percent for the third, and includes those amounts in the rate used to compute overtime.
Why a differential changes your overtime rate (and why most calculators get it wrong)
Overtime is 1.5 times your regular rate, and the regular rate is not your base rate once a differential is in the picture. 29 CFR 778.207(b) requires "the inclusion in the regular rate of such extra premiums as nightshift differentials (whether they take the form of a percent of the base rate or an addition of so many cents per hour)." The regular rate is the weighted average of all straight-time pay for the workweek divided by all hours worked in it, so it is a factual computation that no agreement can waive.
Run the defaults. At $34.00 base, 12 day hours pay $408.00, 24 night hours at $38.00 pay $912.00, and 12 weekend hours at $37.00 pay $444.00. That is $1,764.00 of straight time over 48 hours, so the blended regular rate is $36.75 an hour, not $34.00. The 8 overtime hours earn a half-time premium of 8 x 0.5 x $36.75, or $147.00, and each of those hours is worth 1.5 x $36.75, which is $55.13. A calculator that multiplies the base rate instead would show $136.00, an $11.00 shortfall every week, or $572 a year. Nobody should call that rounding. If an employer actually runs payroll that way, the shortfall is an FLSA underpayment.
This tool derives overtime hours as total weekly hours minus 40 rather than asking for them separately, which avoids the question of whether your overtime hours sat inside the night block or on top of it. Under the weighted-average method the premium owed is the same either way. The 40-hour workweek is the federal default; hospitals may elect the 8/80 alternative under 29 USC 207(j), and California adds daily overtime after 8 hours, so check your employer's rule if your schedule is unusual.
How shift differentials are taxed in 2026
Differential dollars are ordinary wages. They land in W-2 Box 1 and face the same federal brackets as the rest of your pay, plus 6.2 percent Social Security on wages up to the $184,500 wage base, 1.45 percent Medicare on everything, the 0.9 percent Additional Medicare surtax above $200,000 (single and head of household), $250,000 (joint), or $125,000 (married filing separately), and state income tax. There is no special night-pay rate anywhere in the code.
The 2026 no-tax-on-overtime deduction works in two directions here, and most write-ups get one of them wrong. Only the FLSA-required premium above the regular rate qualifies, so your straight-time differential dollars ($132.00 a week in the example) are not deductible. But because the differential must sit in the regular rate, the deductible half-time premium is computed on $36.75 rather than $34.00, which makes $147.00 a week qualified instead of $136.00. The $11.00 uplift is deductible even though the $132.00 that produced it is not. The deduction is capped at $12,500 or $25,000 joint and phases out above $150,000 or $300,000 of modified AGI by $100 per full $1,000. It reduces federal income tax only, and it skips married filing separately entirely.
Differentials can also look like they were taxed harder than they were. A heavy night rotation makes one paycheck bigger, payroll annualizes that check to estimate withholding, and more tax comes out than your yearly rate would justify. That is a withholding artifact, and your return trues it up. The Paycheck by Pay Frequency Calculator shows how the same annual pay splits differently across weekly, biweekly, semimonthly, and monthly checks.
What the differential is really worth, and when the math shifts
The hero number at the top is not gross differential pay. It runs your whole paycheck twice, once as entered and once with both differential values set to zero, and reports the difference in annual take-home. That is the only way to catch both halves of the answer: the straight-time premium dollars, plus the overtime echo the premium creates by lifting the regular rate. The cents-kept figure below it is a true marginal rate, your federal bracket plus 6.2 percent plus 1.45 percent plus your state, not a blended average.
Geography moves the answer a lot. The same $4 night differential keeps more in Texas or Florida, where there is no state income tax, than in California or Oregon. So does the Social Security wage base: once your wages pass $184,500 the 6.2 percent stops, and the keep rate on every differential dollar above that line jumps by 6.2 points. If you are weighing nights against a side gig instead, the Second Job Take-Home Calculator answers the same question from the other direction, and the Overtime Pay Take-Home Calculator covers extra hours you choose to pick up.
This page is a fast estimate built on a typical week and a flat state rate. To price a real rotation, download the Stub44 Salary Calculator app: saved profiles let you keep "day rotation" and "night rotation" side by side, and its hourly mode takes several rate-and-hours entries per profile, so a mixed week of days, nights, and weekends maps straight onto it.
Frequently Asked Questions
Common questions about shift differential take-home calculator
How is shift differential pay calculated?
Two forms, both named in 29 CFR 778.207(b). A flat adder pays (base + $X) for every differential hour: at a $34.00 base with a $4.00 night adder, 24 night hours pay 24 x $38.00, or $912.00. A percentage differential pays base x (1 + X%): a 12 percent night premium on the same $34.00 base is $38.08 an hour, or $913.92 for the same 24 hours. Use the "$/hr" and "% of base" toggle above for whichever form your employer uses. One catch: the tool does not convert your typed number when you flip the toggle, so 4 means $4.00 an hour in flat mode and 4 percent in percentage mode.
Is shift differential included in overtime pay?
Yes, and it is not optional. 29 CFR 778.207(b) requires the inclusion in the regular rate of extra premiums such as nightshift differentials, "whether they take the form of a percent of the base rate or an addition of so many cents per hour." Overtime is then 1.5 times that blended regular rate, not 1.5 times your base rate. The regular rate is a factual computation (all straight-time pay for the workweek divided by all hours worked in that workweek), so an employer and an employee cannot agree to leave a differential out of it.
Is night differential taxed differently from regular pay?
No. Differential dollars are ordinary wages in W-2 Box 1, subject to normal federal income tax, 6.2 percent Social Security up to the 2026 wage base of $184,500, 1.45 percent Medicare (plus the 0.9 percent Additional Medicare surtax on higher wages), and state income tax. There is no special differential rate. Because the premium is paid in your regular paycheck rather than as a separate payment, it is not automatically treated as supplemental wages either. It is just part of that period's gross wages.
How much is a night differential actually worth after taxes?
Take the defaults above: a $4.00 night differential on 24 hours plus a $3.00 weekend differential on 12 hours is $132.00 a week of straight-time premium, about $6,864 a year, and the differentials also lift the overtime premium by another $11.00 a week. The hero number on this page runs your full paycheck twice, once with the differentials and once without, and reports the difference in annual take-home. Most workers keep somewhere between 65 and 80 cents per differential dollar. Where you land depends on your federal marginal bracket, your state rate, and whether your wages have already passed the Social Security wage base.
Does the 2026 "no tax on overtime" deduction cover my shift differential?
No. Qualified overtime compensation is only the pay required by section 7 of the FLSA that exceeds the regular rate, meaning the "half" in time and a half. Differential dollars paid on straight-time hours are ordinary wages and get no deduction, and neither does contractual pay above the FLSA minimum such as double time or holiday premiums. The differential still raises the deduction indirectly: because it must sit in the regular rate, the half-time premium is 0.5 x $36.75 instead of 0.5 x $34.00 in the example above, and that $11.00 a week of uplift does qualify. The cap is $12,500 (single and head of household) or $25,000 (married filing jointly), phasing out above $150,000 or $300,000 of modified AGI by $100 for each full $1,000 over the line. It reduces federal income tax only, and it runs for tax years 2025 through 2028. Married filing separately is ineligible under section 225(e). To model overtime hours on their own, use the Overtime Pay Take-Home Calculator.
Is my employer required to pay a shift differential?
No. The FLSA neither requires nor defines shift differentials. They come from employer policy or a collective bargaining agreement, which is why the amounts vary so widely by industry. Federal Wage System employees are the statutory exception: FWS night shift differentials are 7.5 percent of the scheduled rate for the second shift and 10 percent for the third shift, and OPM includes them in the rate used to compute overtime. For federal pay specifically, see the Federal Employee Take-Home Calculator.
Do night and weekend differentials stack?
Employer policy decides. Some employers stack both premiums on a Saturday night shift, others pay only the higher of the two. Either way, whatever is actually paid goes into the regular rate. In this tool, count each hour once. If your employer stacks a night and a weekend premium on the same shift, enter those hours in a single bucket with the combined differential (for example $7.00 an hour rather than $4.00 and $3.00 in two buckets), otherwise you will count the same hours twice and overstate both gross and overtime.
Does shift differential count toward my 401(k) match, PTO rate, or a raise?
Usually yes for 401(k) deferrals and the employer match, because most plans define compensation as W-2 wages, which include differentials. PTO is often paid at base rate only, so check your handbook before assuming a paid day off carries your night premium. The two forms also age differently: a percentage differential rises automatically when your base rate rises, while a flat dollar adder stays put and quietly shrinks as a share of your pay. To see how differential dollars change your deferral math, try the 401(k) Paycheck Impact Calculator.