A net-pay pension arrangement is a common UK workplace pension mechanic used by many large employers. Your contribution is deducted from gross salary before Income Tax is calculated (so all tax relief happens automatically — no Self Assessment claim needed for higher rate). But unlike salary sacrifice, the contribution is calculated AFTER NI, meaning you don't save NI on the sacrificed amount. This guide explains the mechanics, when it wins, when it loses to salary sacrifice, and how to check which one your scheme uses.
Verified against 4 official sources · Last reviewed 14 June 2026
Salary sacrifice saves ~£880/year on this example because it also saves NI. Over a career this compounds significantly.
Why some employers use net pay instead of sacrifice
Setup complexity: Sacrifice requires contract change; net pay is a straight deduction
Employer NI savings clarity: Net pay is simpler for employer to manage
Historical: Many large employers set up net-pay schemes long ago
State Pension concerns: Salary sacrifice can reduce state pension calculation (marginally)
When net-pay wins
If your employer doesn't offer sacrifice (defaults to net pay)
If sacrifice would take you below National Minimum Wage
Simplicity value — fewer moving parts
When to push for sacrifice
Higher-rate taxpayer wanting the automatic NI saving
Below £100k taper band — sacrifice value is 62%
Employer signals openness to offering it
Most employers can convert net-pay to sacrifice with modest admin effort.
Common variants
Salary sacrifice for some employees, net-pay for others — depends on band
Salary sacrifice with option to opt back to net-pay — some employers give the choice
The Self Assessment question
Under net-pay arrangement:
- All Income Tax relief is captured automatically (all bands)
- No Self Assessment claim needed for higher-rate relief
- (This is a key difference vs relief-at-source, which requires SA for higher rate)
In short
Net-pay pension arrangements are simple + get all Income Tax relief automatically, but don't save NI like salary sacrifice. If your employer offers it, ask whether they can convert to salary sacrifice — worth an extra 8-2% (depending on band) per £ contributed.
Frequently asked questions
How does net-pay differ from salary sacrifice?
Salary sacrifice reduces gross salary before both Income Tax + NI. Net pay reduces salary before Income Tax only (NI is calculated on the pre-contribution salary).
Do I need to claim higher-rate relief under net pay?
No — all Income Tax relief is captured automatically. Only relief-at-source requires Self Assessment claim for higher-rate.
Which is better — net pay or relief-at-source?
Net pay wins for higher-rate taxpayers (automatic relief, no SA needed). Relief-at-source can be either same or better depending on band + SA compliance.
Can I switch from net-pay to salary sacrifice?
If your employer offers it, yes. Usually requires contract update + at least 30 days notice.
Is net-pay Scheme the same as workplace pension?
Workplace pension is the vehicle; net-pay is one of the ways to run contributions into it. NEST, People's Pension can use any of the 3 mechanics.
Salary sacrifice pension — A salary sacrifice pension scheme redirects part of your gross salary into pension before tax/NI is calculated. You save both Income Tax + NI on the sacrificed amount — 28% saving for basic-rate, 42% for higher-rate.
Salary sacrifice — Salary sacrifice is the most tax-efficient UK pension contribution
Employer pension match — UK employer pension match ranges from the 3% auto-enrolment minimum to 15%+ at generous employers. Capturing full match should be your first pension priority — it's free money. This guide covers structure + negotiation.
Claim higher-rate pension relief — UK higher-rate pension tax relief above basic rate must be claimed via Self Assessment (relief-at-source schemes) or is captured automatically (net-pay/salary sacrifice). This guide covers the claim process.
NEST pension explained — NEST (National Employment Savings Trust) is the UK's default workplace pension provider set up to support auto-enrolment. This guide covers what it is, how it works, fund choices, fees, and how it compares to People's Pension + Smart Pension.
Salary sacrifice — An arrangement where you give up part of your gross salary in exchange for a non-cash benefit (most commonly pension contributions), reducing your Income Tax and National Insurance.
Sources
All figures on this page are sourced from official UK government publications.
We don't cite secondary commentary or other calculator sites.
For the calculation methodology behind every figure on this page, see our
methodology. For our review and update process, see our
editorial standards.
Last reviewed: 14 June 2026.
Next review due 14 December 2026.
Disclaimer: This page provides general information based on published HMRC and gov.scot figures. It is not personal tax or financial advice. For your specific situation, please consult a qualified accountant or contact HMRC directly.