Pay raise calculator: new salary, hourly rate, and per-paycheck difference
A transparent raise calculator with percentage and dollar modes, pay frequencies, effective dates, and gross-versus-net explanations.
Is it right for you?
- Choose hourly or salary pay basis
- Enter a percentage raise or dollar increase, not both silently
- Confirm hours, pay frequency, and effective date
- Show annual, full-period, and current-year gross differences
- Keep tax and benefit estimates separate from raise math
Quick verdict
A pay raise calculator should answer four different questions: the new rate, the annual gross increase, the increase for a full pay period, and the current-year increase after the effective date. It should not promise a take-home amount from the raise percentage alone because withholding, wage bases, benefits, and deductions can change the net result.
Core raise formulas
- New rate = current rate × (1 + raise percentage ÷ 100).
- Raise percentage = (new rate − current rate) ÷ current rate × 100.
- Annual dollar increase = new annual gross − current annual gross.
- Per-pay-period increase = annual dollar increase ÷ actual annual pay periods.
- Current-year increase = sum of increased gross for pay periods or hours after the effective date.
Round currency at the displayed result, not at each intermediate step unless the payroll system does so. Label the method.
Hourly example
An employee moves from $22 to $23.10 per hour. The increase is $1.10 per hour, or 5%. At 40 paid hours for 52 weeks, the annualized gross difference is $1.10 × 40 × 52 = $2,288.
If the employee works variable hours or unpaid weeks, use expected paid hours instead. The annualized result is not a guaranteed payment.
Salary and pay-frequency example
A salary increases from $60,000 to $63,000. That is a $3,000 annual increase, or 5%. The full-period gross difference is $115.38 on a 26-period biweekly schedule, subject to payroll rounding; on a 24-period semimonthly schedule it is $125.
Biweekly and semimonthly are different. Use the actual payroll calendar and do not assume each month contains two biweekly checks.
Effective date changes the first-year value
A raise effective halfway through the year does not add the full annualized difference to that year's wages. Calculate affected hours or pay periods from the effective date and show the annualized run rate separately.
If a raise starts mid-period, the payroll system may prorate by days, hours, or another approved rule. The tool should request the method or avoid producing a precise partial-period number.
Why the paycheck increase is not simply the gross increase
Federal withholding uses Form W-4 and current IRS methods. Social Security has an annual wage base, Medicare does not, and benefits or retirement deductions can be percentage-based [IRS, 2026].
A separate paycheck estimator can model those facts. The raise calculator should display gross differences and explain why net can diverge.
Frequently asked questions
How do I reverse-calculate the raise percentage? Divide the rate difference by the old rate and multiply by 100.
Why is my first paycheck increase smaller? The raise may start mid-period, cover fewer hours, or change withholding or deductions.
Does a promotion bonus count as a raise? Show a one-time bonus separately from the recurring base-rate change.
Can the tool compare inflation? Only with a clearly sourced index and date; do not mix that feature into the basic raise result without context.