Free Overtime Calculator: quick overtime calculator for everyday decisions. No signup needed.
The Overtime Calculator estimates how additional hours change gross and take-home pay. Start with your annual base salary, contracted hours, overtime hours, and the rate used for overtime. The calculation treats annual salary as pay for a full 52-week year, then adds overtime earned each week. Weekly gross pay multiplied by 52 equals the annual gross pay shown here.
Holiday weeks are displayed as context rather than subtracted from the denominator. A salaried employee normally receives annual salary across the year, including paid leave. Dividing by 52 minus holiday weeks would inflate the base hourly rate and could make ordinary overtime look larger than the payroll calculation. If you are paid only for weeks worked, enter equivalent annualised pay and check it against your contract.
Choose a currency to select the estimate that matches the jurisdiction. GBP uses the 2026/27 UK income-tax and employee National Insurance model. USD uses 2026 US federal income tax, FICA, a filing-status selector, a state-tax selector, and an optional estimate of the new qualified-overtime deduction. EUR deliberately stays gross-only: there is no single Eurozone tax rule that can be guessed safely without knowing the country, residence, social-insurance system, tax status, and deductions.
For a broader deduction check, compare the result with salary after tax calculator. If the question is about a statutory entitlement rather than voluntary overtime, also compare holiday pay calculator and sick pay calculator; those calculators answer different legal and payroll questions.
Base hourly rate = annual salary ÷ 52 ÷ regular hours per week. Weekly overtime gross is overtime hours multiplied by the overtime hourly rate. Annual gross is base annual salary plus weekly overtime gross multiplied by 52. Monthly gross is annual gross divided by 12.
With a multiplier, overtime hourly rate equals base hourly rate multiplied by the selected multiplier. With a flat rate, the entered hourly amount is used directly. The model also calculates the premium above the base rate. That premium is useful for the US qualified-overtime estimate, but it is not automatically a tax exemption in the UK or EUR modes.
The UK estimate applies the standard 2026/27 Personal Allowance and bands, including the high-income Personal Allowance taper, then applies employee Class 1 National Insurance at 8% between the primary threshold and upper earnings limit and 2% above it. It is an annualised estimate; Scottish income tax, tax codes, pension salary sacrifice, student loans, benefits, and payroll-period rounding are outside this simple model.
The US estimate applies the 2026 federal brackets and standard deduction for the chosen filing status, employee Social Security up to the 2026 wage base, Medicare, and the selected illustrative state rate. The OBBBA option estimates only the qualified premium portion of FLSA-required overtime, subject to the annual cap and income phase-out. It is not a determination that an employee is FLSA-covered or eligible.
Gross overtime is the extra pay before deductions. The useful comparison is often the marginal net amount: how much of one additional overtime hour remains after tax and payroll deductions. The calculator keeps gross and net pay in separate labelled rows and shows weekly, monthly, and annual values. A monthly figure is an annualised average, not a promise that every month contains the same overtime shifts.
UK results are a planning estimate for 2026/27. Income tax is progressive, so the full overtime amount is not necessarily taxed at one rate. National Insurance is separate. A payslip may differ because payroll uses the pay period, tax code, NI category, pension contributions, benefits, student-loan plan, and other deductions. Overtime can also affect means-tested support or employer benefits.
USD results separate federal income tax, Social Security, Medicare, and the state estimate. The state selector is illustrative because state tax can depend on brackets, local taxes, deductions, residency, and filing details. The qualified-overtime option is narrower than “all overtime”: IRS guidance describes qualified compensation as the premium above the regular rate required under the Fair Labor Standards Act. Extra contractual pay, exempt roles, and state-only overtime rules may not qualify.
EUR mode reports gross only rather than presenting false precision. If you need net pay in euros, identify the country and tax year first, then use a country-specific payroll or tax source. Do not carry the UK result into a euro-area payslip.
This calculator is an educational estimate, not a payslip, tax return, legal entitlement decision, payroll quote, or financial advice. Tax years, thresholds, payroll rules, overtime eligibility, tax codes, state and local taxes, and employment contracts can change. Current references used for the displayed models are GOV.UK income-tax rates, GOV.UK employee National Insurance rates, IRS Rev. Proc. 2025-32, IRS Publication 15, and the IRS qualified-overtime FAQs. Confirm a consequential result with your employer, payroll provider, tax authority, or qualified adviser.