Salary Sacrifice vs SIPP vs LISA

You have been doing the maths. You want to FIRE (Financial Independence, Retire Early). You are earning decent money. And you have just discovered that the taxman will effectively pay you to save into a pension. But which pension? And should you even use a pension at all?

The Guardian Money section published a piece this week urging people to maximise their pension tax relief before it disappears. They are not wrong. But the more interesting question is not whether to save into a pension. It is which vehicle to use and in what order.

The Three Options

Salary sacrifice means asking your employer to reduce your salary by a certain amount, which then goes directly into your pension. The key benefit: both you and your employer save National Insurance contributions. If you earn £60,000 and sacrifice £10,000, that £10,000 costs you only £6,800 in net pay because you avoid the 12% employee NICs and your employer avoids the 13.8% employer NICs.

A SIPP (Self-Invested Personal Pension) is a personal pension you open yourself. You pay in from your bank account and claim tax relief from HMRC. Basic rate relief comes automatically at 20%. Higher rate and additional rate taxpayers claim the rest via their tax return.

A LISA (Lifetime ISA) is not a pension at all. It is a savings account with a 25% government bonus. You can save up to £4,000 per year and the government adds £1,000. The money must be used for a first home purchase or held until you are 60.

Which Order Should You Use Them?

For most people pursuing FIRE, here is the order that typically wins:

First: Get your full employer match. If your employer matches your contributions, always do this first. It is literally free money. If they match up to 5%, and you earn £60,000, that is £3,000 of free money every year.

Second: Max your salary sacrifice to the annual allowance. For the 2026-27 tax year, the annual allowance is £60,000 or 100% of your earnings, whichever is lower. On a £60,000 salary, the maximum you can contribute is £60,000. But here is the thing: if you salary sacrifice £10,000, it only costs you £6,800. That is an immediate 47% return on your money before any investment growth.

Third: If you are saving for a first home and can lock money away until 60, consider a LISA. The 25% government bonus is better than any savings account available today. But understand the rules: if you withdraw for anything other than a first home or retirement at 60, you lose the bonus and pay a 25% penalty.

The Tax Relief Nobody Talks About

The Guardian article mentioned that pension tax relief is under threat. This is the elephant in the room. The annual allowance is already £60,000. The lifetime allowance was abolished in April last year. But here is what most people do not realise: salary sacrifice is more valuable than a SIPP for higher rate taxpayers because of the National Insurance savings.

If you earn £60,000 and put £10,000 into a SIPP, you get £2,000 basic rate relief automatically. You then claim another £2,000 via your tax return (40% on £10,000 minus the £2,000 basic rate already claimed). Total tax relief: £4,000.

If you salary sacrifice £10,000 instead, you avoid £1,200 in employee NICs and your employer avoids £1,380 in employer NICs. Your employer might pass some of their saving to you via higher contributions, or they might just keep it. But you definitely save £1,200 in NICs. On top of that, you still get the pension tax relief. Total: at least £5,200 in tax relief and NICs savings.

The FIRE-Specific Strategy

If you are pursuing FIRE, you probably have a target number and a timeline. The typical FIRE person in the UK is earning £60,000-£100,000, is 35-45, and wants to retire between 45 and 55.

Here is the specific sequence for that person:

1. Get full employer match (this is always step one)

2. Salary sacrifice up to the higher rate tax threshold (£37,700 for 2026-27). This converts your entire higher rate band into pension contributions at 40% relief plus NICs savings.

3. If you have more to invest and want to access before 57 (the earliest pension access age), use a LISA after maxing the higher rate threshold. The 25% bonus beats most savings accounts.

4. If you are self-employed or your employer does not offer salary sacrifice, use a SIPP and claim everything you can via tax return.

The Number That Makes This Real

Let us say you are 38, earn £70,000, and want to retire at 52. You have 14 years. If you salary sacrifice £15,000 per year above your employer match, here is what happens:

That £15,000 costs you £9,450 in net pay (after NICs relief). You get £15,000 in your pension. The tax relief and NICs savings together are worth roughly £6,000 per year in government contributions. Over 14 years, assuming 7% growth, you end up with approximately £370,000 in your pension. The government has contributed roughly £84,000 of that through tax relief and NICs savings.

That is the deal. They are paying you to save. The question is whether you are taking it.

The LISA Question

LISA vs pension for FIRE is a genuinely complex question. LISAs allow access at 60. Pensions allow access at 57 (rising to 58 in 2028). If you want to retire at 45, neither helps directly. But LISAs have one advantage: you can withdraw at any time for a first home. If you are a first-time buyer pursuing FIRE, the LISA should probably be part of your strategy.

The government is effectively giving you £1,000 for every £3,000 you save. That is a 33% return, risk-free. No savings account in the UK is giving you that.

What To Do Before the End of This Month

If you earn over £50,000 and have not looked at your pension contributions recently, do these three things:

1. Check if your employer offers salary sacrifice. If they do, find out the exact process. Some employers call it salary exchange. The net cost to you will be lower than a SIPP contribution of the same amount.

2. Calculate your higher rate band exposure. If you earn £60,000, you have £10,300 above the higher rate threshold (£50,270). Every £1,000 you salary sacrifice saves you £400 in income tax plus £120 in NICs. That is 52% relief on £1,000.

3. Open a LISA if you are a first-time buyer or want to lock money away for 60. The £4,000 annual limit is not huge but the 25% bonus is free money. Providers include AJ Bell, Hargreaves Lansdown, and others.

The tax relief is not going to get more generous. If you have been putting this off, this month is a good time to start.