Prorated Salary Calculator
Started or left a job mid-period? Enter your salary and dates to see prorated gross pay by calendar day, workday, or pay period, plus 2026 take-home.
Prorated Salary Calculator
Your dates
Enter your annual salary and the days you actually worked. Tax year 2026.
Salary divided by the calendar days in the year, times the calendar days you worked.
Leave at 0 unless you took unpaid leave. Paid company holidays do not count.
Leave at 0 to skip state tax. Enter your own flat rate if you know it.
Enter your annual salary.
Same inputs, all three methods
The first two rows cover the whole span you entered. The last two cover the single pay period only, which is the first-paycheck case.
2026 estimate. Federal withholding uses the annualized effective rate on your full salary, which is how payroll treats a prorated check. It excludes pre-tax deductions, local and city taxes, state SDI or PFL, year-to-date wages from a prior job, and the full W-4.
Three ways employers prorate a salary, and why they disagree
You did the math on your first partial paycheck, payroll paid a different number, and neither of you made a mistake. Proration has no single federal formula. The answer hangs on which denominator your employer divides your salary by, and three of them are in common use.
The calendar-day method divides your salary by the days in the year (365 in 2026, 366 in a leap year) and multiplies by the calendar days you worked. Weekends count, because a salary pays for the period rather than for hours.
The working-day method divides by the weekdays in the year instead (261 in 2026, which HR guides usually round to 260), then multiplies by the weekdays you worked. Fewer days in the denominator, bigger daily rate.
The pay-period method ignores the year entirely. It divides your salary by the pay periods in the year (52 weekly, 26 biweekly, 24 semimonthly, 12 monthly), then multiplies by the workdays you covered in that one period over the workdays scheduled in it.
Take a $96,000 salary running from September 21 to December 31, 2026. That span is 102 calendar days and 74 weekdays. Calendar day gives $96,000 / 365 = $263.01 a day, times 102 = $26,827.40. Working day gives $96,000 / 261 = $367.82 a day, times 74 = $27,218.39. The gap is $390.99 on identical dates, and it comes purely from the denominator.
No method is federally mandated, so your offer letter or your payroll team is the only authority on which one applies to you. The comparison table above the fold runs all three on your own numbers so you can match the figure that actually landed. Once the prorated period is behind you, the Paycheck by Pay Frequency Calculator shows what a full check looks like.
Prorating one pay period: the first-paycheck case
If you just started a job, you probably do not want a partial-year figure at all. You want one number: the first check. That is the pay-period method, and it works on a much smaller window.
Same $96,000 salary, paid semimonthly. Twenty-four periods a year gives a full period gross of $4,000.00. The September 16 to 30, 2026 period contains 11 workdays, and a September 21 start covers 8 of them. The workday fraction pays $4,000 x 8/11 = $2,909.09. An employer using calendar days inside the same period counts 15 days with 10 worked, which pays $4,000 x 10/15 = $2,666.67. Two defensible methods, $242.42 apart, on the same first check.
Proration is only half of why a first check looks thin. Most employers pay in arrears, so the days at the start of your employment can land on the following check rather than the first one, and new benefit deductions usually switch on at the same time. Those causes stack. Our guide to why your first paycheck at a new job is smaller than expected covers each of them.
Prorating an exempt employee is explicitly allowed at the edges of employment. Under 29 CFR 541.602(b)(6), an employer may pay "a proportionate part of an employee's full salary for the time actually worked" in the initial and terminal week without violating the salary-basis rule. That permission is narrow: it covers your first and last week, not routine deductions for partial-day absences in the middle of a job.
Why a prorated check is over-withheld (and usually refunded)
Withholding is where a prorated check gets strange. Payroll's percentage method (IRS Publication 15-T) annualizes every check. It takes the amount in front of it, multiplies by the number of pay periods in a year, and withholds as though that rate ran for all 12 months. Start in September and your withholding is set as if you had earned a full year at that salary, which you did not.
Federal tax on a full $96,000 for a 2026 single filer: taxable income is $96,000 minus the $16,100 standard deduction, or $79,900. That is 10% on the first $12,400 ($1,240), 12% on $12,400 to $50,400 ($4,560), and 22% on $50,400 to $79,900 ($6,490), for $12,290, an effective 12.802% of gross. Applied to $26,827.40 of prorated gross, that withholds about $3,434.47. FICA takes another 7.65%, or $2,052.30 (Social Security $1,663.30 plus Medicare $389.00), leaving roughly $21,340.64 in take-home.
Now the actual bill. If $26,827.40 is all you earn in 2026, taxable income is $26,827.40 minus $16,100 = $10,727.40, which sits entirely in the 10% bracket: $1,072.74 owed. You had $3,434.47 withheld. The $2,361.73 difference comes back as a refund when you file.
Two caveats. This assumes no other 2026 income. If you left a full-salary job in August and started this one in September, both jobs stack on one return and the refund shrinks or disappears. And FICA never works this way: 6.2% Social Security up to the $184,500 wage base for 2026 and 1.45% Medicare are owed on every dollar of wages no matter when in the year you earned them. If you would rather fix the withholding than lend the money to the Treasury until April, the W-4 Withholding Planner shows which lines to change.
What a mid-year raise is actually worth
Proration also decides what a mid-year raise is worth. A jump from $90,000 to $99,000 effective September 21, 2026 pays the old rate for 263 days ($90,000 / 365 x 263 = $64,849.32) and the new rate for 102 days ($99,000 / 365 x 102 = $27,665.75), or $92,515.07 for the calendar year. The $9,000 raise is worth $2,515.07 in year one, before tax. The full $9,000 does not appear until the following January, which is why a raise can feel underwhelming on the first W-2 after it lands.
To see what the raise is worth after tax once it is running at the full rate, the Raise Net Take-Home Impact calculator picks up where this one leaves off.
This web tool uses an optional flat state rate and skips pre-tax deductions and the full W-4. For exact per-state withholding, 401(k) and HSA deductions, year-to-date FICA-taxable earnings (which matter a lot when you change jobs mid-year), and saved profiles to weigh offers side by side, download the Stub44 Salary Calculator app.
Frequently Asked Questions
Common questions about prorated salary calculator
How do you calculate a prorated salary?
Pick a daily rate, then multiply by the days you actually worked. The two common daily rates are annual salary divided by calendar days in the year (365 in 2026) and annual salary divided by working days (261 in 2026). A $96,000 salary works out to $263.01 per calendar day or $367.82 per workday. Which one your employer uses is a policy choice, and the two produce different checks for identical dates.
How much will I earn if I start a job in the middle of the year?
Multiply your daily rate by the days between your start date and December 31. Starting September 21, 2026 on a $96,000 salary gives 102 calendar days, or $26,827.40 of gross pay for the year. Enter your own salary and start date above to see both the gross and an estimated take-home. If you are still negotiating the number, the Net to Gross Salary Calculator works the same math in reverse.
Do employers prorate by calendar days or working days?
Both are used, and neither is required by federal law. Calendar-day proration divides by 365 and is the most common default. Working-day proration divides by the roughly 260 weekdays in a year (261 in 2026) and produces a slightly larger check for the same span. Some employers instead prorate the single affected pay period by workdays inside that period. Check your offer letter or ask payroll which method they run.
Is it legal for an employer to prorate a salaried employee's pay?
For the first and last week of employment, yes. Federal regulation 29 CFR 541.602(b)(6) lets an employer pay "a proportionate part of an employee's full salary for the time actually worked" in the initial or terminal week without breaking the salary-basis rule for exempt employees. Outside those weeks, docking an exempt employee's salary for partial-day absences is much more restricted.
Why was my first paycheck prorated and smaller than expected?
Because it only covers the days between your start date and the end of that pay period, not a full period. On top of that, most employers pay in arrears, so some of your first days land on the following check, and new benefit deductions switch on at the same time. Our guide on why the first paycheck at a new job is small walks through all four causes.
How is a prorated paycheck taxed?
Payroll annualizes it. The withholding tables take the check in front of them, multiply by the number of pay periods in a year, and withhold as though that rate ran all 12 months. Federal income tax is withheld at your full-salary rate rather than the rate on what you will actually earn this year, and FICA is a flat 6.2% Social Security (on wages up to the 2026 base of $184,500) plus 1.45% Medicare regardless. To see what a full, unprorated check looks like once the first period is behind you, use the Paycheck by Pay Frequency Calculator.
Will I get a refund if I start a job late in the year?
Often, yes. Withholding is calculated as if your salary ran all year, but a partial year of earnings sits in lower tax brackets. A $96,000 salary started September 21, 2026 yields about $26,827 of gross, on which roughly $3,434 of federal tax is withheld, while the actual tax on that income for a single filer is about $1,073, a difference of about $2,362 refunded at filing. Other income you earned earlier in the year changes this. The W-4 Withholding Planner shows how to adjust instead of waiting.
How do I calculate a prorated raise?
Prorate each rate for the part of the year it applied, then add them. A raise from $90,000 to $99,000 effective September 21, 2026 pays $90,000 for 263 days ($64,849.32) plus $99,000 for 102 days ($27,665.75), or $92,515.07 for the year. The $9,000 raise is worth $2,515.07 in the first calendar year; the full amount shows up the following January. For the after-tax value at the full run rate, see the Raise Net Take-Home Impact calculator.