How to calculate payroll manually

Everhour supports payroll review with timecards and exports, while manual payroll requires exact gross-to-net steps.

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Gross pay$5,000.00
Total deductions$1,350.00
Effective tax rate27%

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Manual payroll calculation basics

What this calculation answers

Manual payroll calculation answers one practical question: how much an employee earned for the pay period, how much must be withheld, and what amount the employee receives. Start with gross wages from salary, hourly time, overtime, supplemental wages, vacation pay, or other paid amounts. Then apply federal income-tax withholding, employee Social Security, employee Medicare, any required Additional Medicare withholding, state or local withholding, and employee deductions.

For U.S. payroll, the federal baseline uses the employee's Form W-4 and IRS Publication 15-T withholding methods. Employers also calculate employer-side taxes separately, including matching Social Security and Medicare, FUTA, and state unemployment tax where applicable. State payday frequency, state income withholding, SUTA wage bases, and paid-leave mandates depend on state law, so a manual payroll check is incomplete without the employee's work location and applicable state rules.

Build gross pay first

For hourly payroll, multiply regular hours by the regular rate, then add overtime if it applies. Covered nonexempt employees must receive overtime pay at not less than one and one-half times the regular rate for hours worked over 40 in a fixed 168-hour workweek. Averaging hours over two or more weeks is not permitted under the federal overtime rule.

For example, a covered nonexempt employee earns $20 per hour and works 50 hours in one fixed workweek. Regular pay is 40 hours times $20, or $800. Overtime pay is 10 hours times $30, or $300. Gross pay is $1,100 before taxes and deductions. Employee Social Security is $68.20, and employee Medicare is $15.95, before federal income-tax withholding from Publication 15-T and any state or local withholding.

Apply taxes in the right order

Federal income-tax withholding comes from the employee's Form W-4 and the IRS wage-bracket or percentage method in Publication 15-T. For 2020 and later Forms W-4, withholding uses filing status, multi-job adjustments, credits, other income, deductions, and extra withholding. Valid pre-2020 Forms W-4 may still use allowance-based calculations or the optional computational bridge.

For wages paid in 2026, employee Social Security is 6.2% only up to the $184,500 annual wage base. Employee Medicare is 1.45% on all covered wages, with no wage cap. Employers must begin withholding Additional Medicare Tax at 0.9% in the pay period when wages paid to an employee exceed $200,000 for the calendar year. FUTA is employer-only and does not reduce the employee's net pay.

Separate one check from payroll records

A one-off manual calculation is enough when you need to verify a paycheck, estimate net pay, or audit one pay period. It works best when the employee has one rate, one work location, no unusual deductions, and no year-to-date wage-base issue. Manual math gets slower when payroll includes multiple rates, supplemental wages, changing deductions, paid time not worked, or overtime that must be reviewed before payroll.

A managed workflow becomes necessary when payroll depends on daily work-hour totals, approvals, and clean handoff records. Everhour timecards support payroll review with daily, weekly, and monthly work-hour totals, project-versus-working-hour comparisons, Team Hours reporting, and PDF, CSV, or XLSX exports. Those records do not replace tax withholding rules, but they give payroll the approved hours needed before the gross-to-net calculation starts.

This content is for general information only, may not be fully up to date, and is provided without any warranty or liability.

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Frequently Asked Questions

What information do you need before calculating payroll by hand?

You need the employee's gross wages for the pay period, Form W-4 details, pay frequency, year-to-date wages, pre-tax deductions, post-tax deductions, work state, local tax location if applicable, and any supplemental wage payments. For hourly employees, you also need regular hours, overtime hours, pay rate, and whether the worker is a covered nonexempt employee.

Does manual payroll include employer payroll taxes?

Manual net-pay calculation subtracts employee withholding and employee deductions from gross pay. Employer payroll taxes are calculated separately and do not reduce the employee's paycheck. For 2026, employer-side federal taxes include 6.2% Social Security up to the $184,500 wage base, 1.45% Medicare with no wage cap, and FUTA on the first $7,000 of wages, subject to the state unemployment credit.

Which W-4 details change federal withholding?

For 2020 and later Forms W-4, federal withholding changes when the employee enters filing status, multiple-job adjustments, dependent credits, other income, deductions, or extra withholding. Valid pre-2020 Forms W-4 may still use allowances unless the employer applies the optional computational bridge. The same gross pay can produce different federal withholding because the W-4 inputs differ.

Do vacation and sick pay go through payroll withholding?

The FLSA does not require pay for time not worked, including vacation, sick leave, or holidays. When an employer provides vacation pay, that pay is subject to withholding as wages. If vacation pay is paid as an additional lump sum, it may be treated as supplemental wages rather than regular wages for federal withholding.

What mistake causes manual payroll to be wrong?

The most common mistake is mixing employee net-pay deductions with employer-only payroll taxes. FUTA, employer Social Security, employer Medicare, and state unemployment tax affect employer cost, not employee take-home pay. Another frequent error is averaging hours across multiple weeks, even though covered nonexempt employees must receive federal overtime after 40 hours in each fixed 168-hour workweek.

How do Everhour timecards support manual payroll review?

Everhour timecards show daily, weekly, and monthly work-hour totals so payroll can review approved hours before calculating gross pay. Teams can compare project hours with working hours, review Team Hours, and export timecard data in PDF, CSV, or XLSX for payroll records.

Turn approved hours into payroll records

Use Everhour timecards to review work-hour totals, approve weekly time, and export payroll-ready records before manual gross-to-net math begins with accurate hours.

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