UK Take-Home Pay Calculator

A salary offer is quoted as gross annual pay, but household budgets depend on the amount that reaches the bank account. Income Tax, employee National Insurance (NI), pension contributions, student loans, and other deductions each follow different rules. Their combined effect can vary even when two employees earn the same salary.

PAYE tax starts with a tax code and an income-tax region. England, Wales, and Northern Ireland use one set of employment-income bands, while Scotland uses six bands. A common code such as 1257L represents an allowance of about £12,570 for that employment. Codes such as BR, D0, 0T, K codes, and emergency suffixes can produce very different deductions and deserve a payslip check.

NI is not simply an annual percentage of salary. Employee Class 1 contributions are calculated against thresholds for each pay period, which is why weekly, four-weekly, and monthly estimates can differ slightly after annualisation. Student and postgraduate loan deductions also use period thresholds and are rounded down to whole pounds for each period.

Pension treatment changes which deductions are reduced. Salary sacrifice lowers the employment pay used for Income Tax, NI, and loan calculations in this model. A net-pay arrangement lowers taxable employment pay but not NI or loan pay. Relief at source deducts the employee's net contribution after basic-rate relief and does not automatically model any extra relief a higher-rate taxpayer may claim.

Several details can move actual take-home pay away from a planning estimate:

• cumulative or emergency PAYE treatment and pay already received earlier in the tax year;
• bonuses, benefits, overtime, statutory pay, expenses, or irregular deductions;
• the exact pension scheme basis and how payroll treats salary sacrifice;
• other taxable income that uses part of the tax bands before employment pay;
• changes to a tax code, loan notice, NI category, or government thresholds.

Take-home pay is therefore a budget estimate, not a substitute for payroll. Use the 2026/27 rules for scenario comparisons, then compare the result with the current tax code and deduction lines on the payslip. HMRC or a payroll professional should resolve material differences.

How to Use This Tool:

Enter one employment scenario for the UK 2026/27 tax year and match each payroll setting to the payslip or pension agreement.

1. Enter Annual gross salary, choose the Income tax region, and copy the PAYE tax code from the payslip. Select the actual Pay frequency because NI and loan thresholds are period-based.
2. Set Employee pension contribution, tax treatment, and contribution basis. Use qualifying earnings only when the scheme applies the 2026/27 £6,240 to £50,270 band.
3. Choose the Student loan plan, add a postgraduate loan when required, and select the employee NI category.
4. Open Advanced only for other taxable income, allowances, fixed pension amounts, post-tax deductions, extra PAYE, or the personal-allowance taper. Leave an item at zero when it does not apply.
5. Review Net pay for annual and per-period amounts. Use Payroll audit to inspect warnings and confirm the tax code, pension treatment, NI category, and loan settings before relying on the estimate.

Interpreting Results:

Net pay is gross salary minus the modeled annual deductions. Per-period net pay divides that annual result by the selected number of pay periods, so it is a planning average rather than a prediction of a particular payslip.

The deduction ledger shows which amounts drive the difference between gross and net. Pay special attention to warnings for an emergency suffix, a tax-code prefix that conflicts with the selected region, a K-code cap, other taxable income, or pension treatment that may need further tax relief. Compare a real payslip line by line; a similar headline total can still hide a wrong tax code or loan plan.

Technical Details:

The model annualises salary and deductions but preserves the selected pay period for Class 1 NI and loan thresholds. Employment income is taxed after pension treatment, other taxable income, the code-derived allowance, optional adjustments, and the personal-allowance taper have been applied.

Formula Core

Annual take-home pay subtracts each modeled cash deduction from gross salary.

Positive numeric tax codes produce an allowance equal to the code number × £10. K codes produce a negative allowance; their modeled Income Tax before extra PAYE is capped at 50% of taxable employment pay before allowance. BR, D0, D1, D2, and D3 apply a region-supported flat rate; 0T gives no allowance and still uses progressive bands; NT applies a zero flat rate. Emergency suffixes are accepted and flagged, but the estimate does not reproduce week-one, month-one, or full cumulative payroll history.

When the taper is enabled, adjusted net income equals salary plus other taxable income minus the gross employee pension contribution. A positive allowance is reduced by £1 for every £2 above £100,000, down to zero:

2026/27 Income Tax bands

These limits apply to taxable income after allowances. Other taxable income uses the lower bands first before the employment slice is calculated.

Pension treatment rules

The percentage contribution uses either full salary or annual qualifying earnings between £6,240 and £50,270, then adds any fixed annual employee contribution. The total employee contribution cannot exceed salary. Employer pension is shown separately and does not change take-home pay.

Employee NI and loan rules

For a standard category A employee, NI is 8% above the primary threshold through the upper earnings limit and 2% above that limit. Categories B/E/I use 1.85% then 2%; C/K/S use nil employee rates; and deferment categories D/J/L/Z use 2% in both bands. Monthly thresholds are £1,048 and £4,189; weekly thresholds are £242 and £967. Fortnightly and four-weekly thresholds multiply the weekly values, while the annual view uses £12,570 and £50,270.

For each period, the deduction is the rate multiplied by pay above the matching threshold, rounded down to a whole pound, then annualised. Salary sacrifice reduces the loan-pay basis in this model; a net-pay pension does not.

Limitations:

This is an informational 2026/27 planning estimate, not tax, pension, or payroll advice.

• PAYE is modeled annually. Prior pay, prior tax, irregular periods, cumulative code operation, payroll rounding, benefits in kind, bonuses, and statutory payments are not reconstructed.
• The tax-code parser supports common numeric, K, 0T, BR, D0–D3, NT, regional-prefix, and emergency-suffix forms. HMRC may apply meanings or adjustments that require a fuller payroll record.
• Relief-at-source pension treatment applies 20% basic relief to the cash contribution only. Additional higher-rate relief is not added to take-home pay.
• Other taxable income occupies tax bands but is not itself added to gross employment cash or net pay. Use it to model band interaction, not total household income.
• Government rules and individual notices can change. The current payslip, HMRC record, pension terms, and loan notice remain authoritative.

References:

• Rates and thresholds for employers 2026 to 2027, HM Revenue & Customs.
• Income Tax rates and allowances for current and previous tax years, HM Revenue & Customs.
• Student loan and postgraduate loan repayment guidance for employers, HM Revenue & Customs.
• What your tax code means, GOV.UK.
• Automatic enrolment earnings thresholds, The Pensions Regulator, 2026/27.