Clear CalculatorsStart with the three common methods
Most employees will see one of three arrangements: net pay, relief at source or salary sacrifice. All can be used for workplace pensions, but they affect the payslip in different ways.
- Net pay: the employee contribution is taken before Income Tax.
- Relief at source: the contribution is taken after tax; the pension provider normally adds basic-rate tax relief.
- Salary sacrifice: the employee gives up future cash pay and the employer contributes instead.
Why the payslip amount can be misleading
With relief at source, the payment shown on the payslip is usually the employee's own contribution. Basic-rate tax relief is added later by the provider, so the pension receives more than the line on the payslip suggests. With net pay, the deduction can look larger because it is the gross contribution taken before Income Tax.
Higher or additional-rate taxpayers may need to claim extra relief in some arrangements. GOV.UK sets out when and how a claim can be made. Read the official pension tax-relief guidance.
A quick way to check your arrangement
Look at your payslip and pension portal together. Find the employee deduction, any employer contribution and the payment received by the pension. Then ask payroll or the provider whether the scheme uses net pay, relief at source or salary sacrifice. That one answer makes the numbers much easier to interpret.
For a rough estimate, use the pension contribution calculator. Keep the same pay period and contribution percentage as your payslip or scheme letter.
Tax relief has limits
Tax relief is not unlimited. GOV.UK says pension contributions are usually tax-free up to 100% of earnings or the annual allowance, whichever limit applies. Circumstances such as high income, previous flexible pension access and contributions from more than one source can matter.
That is why a calculator should be used for planning, not as confirmation that a contribution is permitted. Check the official overview of pension tax relief and limits for the current rules.
What to check before changing a contribution
- Is the percentage based on full salary, qualifying earnings or another pensionable-pay definition?
- Does your employer match contributions, and up to what level?
- Does a bonus count for pension purposes?
- Does the scheme use net pay, relief at source or salary sacrifice?
- Could a change affect cash flow, student loan deductions or salary-linked benefits?