Does salary sacrifice or a SIPP save more tax?

Salary sacrifice saves more for most people, because it avoids employee National Insurance as well as income tax. A SIPP only saves income tax, but gives you full control over the contribution and investment choice.

Can I use both salary sacrifice and a SIPP in the same year?

Yes. Many high earners use salary sacrifice up to what their employer offers, then top up with a SIPP, as long as the combined contributions stay within the annual allowance.

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Pension strategy

Salary Sacrifice vs SIPP for High Earners

6 min read. Last verified 22 June 2026. 2026/27 rules.

The short answer

Salary sacrifice reduces gross pay before tax and National Insurance are calculated, saving both, but needs your employer to offer it. A SIPP is funded from net pay with relief claimed afterwards, saving income tax but not National Insurance, with full control over where it is invested.

Key facts

Salary sacrifice saves income tax and employee National Insurance.
A SIPP saves income tax only, claimed as 20% basic-rate relief at source plus higher-rate relief via self-assessment.
Both reduce adjusted net income by the gross contribution amount.
The annual allowance (£60,000 for 2026/27) applies across both routes combined.

If you are trying to get below £100,000 or simply save more efficiently, the two main routes are salary sacrifice through your employer and a personal pension or SIPP.

Salary sacrifice

You give up gross salary and your employer pays it into your pension. Because the money never becomes your pay, you save income tax and employee National Insurance, and your employer may share their NI saving too. It reduces your ANI directly. The catch is that you need your employer to offer it, and it can affect figures based on salary such as mortgage affordability.

SIPP (relief at source)

You contribute from net pay, the provider adds 20% basic-rate relief, and you claim higher-rate relief through self assessment. The gross contribution reduces your ANI. You get full control over where the money is invested, but you do not save National Insurance.

Common questions

Does salary sacrifice or a SIPP save more tax?: Salary sacrifice saves more for most people, because it avoids employee National Insurance as well as income tax. A SIPP only saves income tax, but gives you full control over the contribution and investment choice.
Can I use both salary sacrifice and a SIPP in the same year?: Yes. Many high earners use salary sacrifice up to what their employer offers, then top up with a SIPP, as long as the combined contributions stay within the annual allowance.

Related playbooks

Sources

GOV.UK: Pension annual allowance

Figures verified against gov.uk and gov.scot on 30 June 2026. Constants version 2026/27.3. 2026/27 tax year. This is a modelling tool for general insight, not financial or tax advice.