Pension Calculator UK
Estimate your employee and employer pension contributions, tax relief, and the net effect on your take-home pay.
Calculations based on publicly available HMRC tax rates and thresholds
Last updated: 19 June 2026
Use this pension calculator UK to estimate your employee contribution, employer contribution, tax relief and the net effect on your take-home pay.
🏦 Your Pension Details
to see your pension breakdown
How UK Pension Contributions Work
Pension contributions come from two main sources: your own contribution as an employee, and your employer's contribution on top. Under auto-enrolment, the minimum combined contribution is typically 8% of qualifying earnings.
Salary sacrifice vs relief at source
With salary sacrifice, your contribution is deducted from your gross pay before tax and National Insurance are calculated, meaning you save on both. With relief at source, your contribution is deducted after tax, and your pension provider claims back basic rate tax relief automatically — higher and additional rate taxpayers must claim the rest via Self Assessment.
Why salary sacrifice is often more efficient
Salary sacrifice typically results in a lower net cost to your take-home pay for the same pension contribution, because it saves National Insurance as well as Income Tax — a saving that relief at source does not provide.
Pension Calculator — FAQs
When you contribute to a pension, you receive tax relief at your marginal rate. Basic rate taxpayers get 20% relief (often added automatically), higher rate taxpayers can claim back up to 40%, and additional rate taxpayers up to 45%. Salary sacrifice achieves this relief automatically by reducing your taxable salary before tax is calculated.
Employee contributions come from your salary (with tax relief applied), while employer contributions are paid on top of your salary by your employer at no direct cost to your take-home pay. Many employers offer minimum contributions under auto-enrolment, with some matching or exceeding this.
Under UK auto-enrolment rules, the minimum total contribution is 8% of qualifying earnings, typically split as at least 3% from your employer and 5% from you (which includes tax relief), though employers can contribute more.
No. Because salary sacrifice contributions come from your gross pay before tax and National Insurance are calculated, you save both Income Tax and NI on the sacrificed amount. This means the actual reduction in your take-home pay is less than the contribution amount itself.
Yes. The Annual Allowance limits how much can be contributed to your pension each year while still receiving tax relief (currently £60,000 for most people, though this can be lower for high earners or those who have already accessed pension benefits). Contributions above this may incur a tax charge.
This depends on your personal circumstances, including affordability, retirement goals and other financial priorities. Increasing contributions, especially via salary sacrifice, can be tax-efficient, but consider speaking to a financial adviser for personalised guidance.
Calculations are based on publicly available HMRC tax rates and thresholds and should be used for guidance only. Read our Disclaimer, Privacy Policy and Terms of Use for more information.
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