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How to Do Payroll Manually (Step-by-Step)

Calculate each employee's gross pay (hours × rate or salary ÷ periods), subtract pre-tax deductions, calculate income tax and social contributions, subtract post-tax deductions, and pay the net amount. Set aside the employer taxes you owe. Document every step — manual payroll is legal but the documentation burden is real, and errors are costly. For most businesses with more than one or two employees, payroll software or a service is worth the cost.

Running payroll manually is legal and possible — and for a business with one or two employees on a simple salary, it may be the most cost-effective option. But the moment you add hourly workers, variable hours, overtime, multiple tax codes, or benefits, manual payroll becomes error-prone and time-consuming. This guide walks through the process step by step, and is honest about when manual stops being worth it.

Before you start

Each employee's gross salary or hourly rate, your country's income-tax brackets and social-contribution rates, a spreadsheet (or paper and a calculator), and the pay schedule (monthly, bi-weekly, etc.).

Steps

  1. 1

    Calculate gross pay for each employee

    For salaried employees: divide the annual salary by the number of pay periods (12 for monthly, 24 for bi-weekly semimonthly, 26 for bi-weekly). For hourly employees: multiply hours worked by the hourly rate, applying overtime rates where required by law (typically 1.5× the regular rate above the legal threshold). Record the gross amount before any deductions.

    💡 Keep a timesheet for every hourly employee — without it, a wage dispute becomes your word against theirs.

  2. 2

    Subtract pre-tax deductions

    Some deductions come out of gross pay before tax is calculated: pension or retirement contributions, health-insurance premiums (in some countries), and certain benefits. Subtract these from gross pay to arrive at the taxable gross — the amount income tax is calculated on.

  3. 3

    Calculate income tax withholding

    Apply your country's income-tax brackets to the taxable gross. In the US, this means using the IRS Publication 15-T tables or the W-4 withholding calculator. In the UK, use the PAYE tax codes. In Greece, apply the progressive income-tax scales. In Ukraine, apply the personal income-tax rate (typically 18% plus military levy). The result is the income tax to withhold from this pay period.

    💡 Tax brackets and rates change annually. Check your tax authority's current-year guidance before the first payroll of the year.

  4. 4

    Calculate social contributions and benefits

    Most countries require both employee and employer social-security contributions. Employee contributions are withheld from pay; employer contributions are paid on top. In the US: Social Security (6.2% each), Medicare (1.45% each), plus federal and state unemployment. In the UK: National Insurance for both. In Greece: EFKA contributions. In Ukraine: ЄСВ (single social contribution). Calculate both sides — the employer cost is higher than the gross salary.

  5. 5

    Subtract post-tax deductions and calculate net pay

    After income tax and employee social contributions, subtract any post-tax deductions: garnishments, loan repayments, union dues, or after-tax benefits. The result is net pay — the amount the employee receives. Document every line so the employee can see how you arrived at the net.

  6. 6

    Pay employees and set aside employer taxes

    Pay the net amount to each employee via bank transfer or check. Separately, set aside the employer taxes and contributions you owe — these are due to the tax authority on a schedule (monthly or quarterly, depending on your country and size). Do not commingle these with operating cash; they are not your money.

    💡 Open a separate savings or tax-holding account for payroll taxes. Mixing them with operating funds is the most common way small businesses get into tax trouble.

  7. 7

    File payroll tax returns and issue payslips

    On the schedule required by your tax authority (monthly, quarterly, annually), file the payroll tax return and pay the withheld taxes plus employer contributions. Issue a payslip to each employee for every pay period showing gross, deductions, and net. At year-end, issue an annual summary (W-2 in the US, P60 in the UK, annual payslip in the EU).

    💡 Late payroll-tax filings carry penalties in every country. Set calendar reminders for every filing deadline — missing them is more expensive than the tax itself.

Common mistakes

  • Not setting aside employer taxes and spending the cash — the single most common and most dangerous payroll mistake.
  • Using last year's tax brackets and rates — they change annually and errors compound across pay periods.
  • Not issuing payslips for every pay period — employees are legally entitled to a breakdown in most countries.
  • Misclassifying an employee as a contractor to avoid payroll taxes — illegal in most jurisdictions and carries back-tax liability plus penalties.
  • Handling overtime incorrectly — the rules vary by country and getting them wrong triggers wage claims and audits.

Verdict

Manual payroll is possible for a business with one or two salaried employees, but the documentation burden and the risk of errors grow fast. Once you have hourly workers, variable hours, or more than a handful of employees, payroll software (QuickBooks Payroll, Xero Payroll, Gusto) or a payroll service is worth the monthly cost. Nika does not handle payroll — it processes supplier invoices from {price} per item — but we are honest about where our limits are, and payroll is one of them.

Questions

Is it legal to run payroll manually?

Yes, in most countries it is legal to calculate and process payroll yourself, as long as you withhold the correct taxes, pay employer contributions, file the required returns on time, and issue payslips. The question is rarely legality — it is whether the time and risk are worth the cost of software or a service.

At what point should I switch from manual payroll to software?

Most businesses switch once they have more than 2–3 employees, or the moment they hire an hourly worker with variable hours. The calculation complexity, filing deadlines, and documentation burden make manual payroll risky beyond that point. Payroll software typically costs $20–50/month per employee — far less than the cost of a single payroll-tax penalty.

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