How to Pay Less Tax Legally UK 2026

Quick answer

Paying less tax legally is not about clever schemes — it is about using the reliefs and allowances Parliament built into the system, and arranging your affairs sensibly across a household. For 2026/27 the big levers are:

1. Pension contributions (relief at 20/40/45%).
2. The £20,000 ISA allowance (tax-free growth forever).
3. Salary sacrifice (income tax and NI saving).
4. The Marriage Allowance (up to £252 a year).
5. Gift Aid (extra relief for higher-rate donors).
6. Income shifting to a spouse (two allowances, two sets of bands).
7. EIS and VCT (30% relief for high-risk investors).

Everything below is mainstream, intended use of the rules. None of it is the kind of artificial avoidance HMRC pursues. Let's go through each.

1. Pension contributions: the biggest lever

A pension contribution is the most powerful everyday tax saver because you get relief at your marginal rate:

• Basic rate (20%): £80 of your money becomes £100 in the pot.
• Higher rate (40%): £100 in the pot costs you a net £60.
• Additional rate (45%): £100 in the pot costs you a net £55.

The annual allowance is £60,000 for 2026/27 (or 100% of earnings if lower), and you can carry forward unused allowance from the previous three years. Higher and additional-rate taxpayers in relief-at-source schemes must claim the extra relief above 20% through Self Assessment — it is widely missed.

Pension contributions also reduce your adjusted net income, which can:

• Restore the Personal Allowance for earners in the £100,000–£125,140 taper zone, where the effective relief rate reaches 60%.
• Cut or remove the High Income Child Benefit Charge between £60,000 and £80,000.

Model your contribution and the tax saved with the

, and see our full guide to pension tax relief.

2. The ISA: £20,000 of tax-free shelter

Every adult has a £20,000 ISA allowance for 2026/27. Money inside an ISA grows free of income tax, dividend tax and capital gains tax — permanently, with nothing to report on a tax return.

With the dividend allowance now just £500, the Personal Savings Allowance shrinking in real terms, and the CGT annual exempt amount cut to £3,000, the ISA has never been more valuable as a shelter. A couple can protect £40,000 a year between them. Use the allowance before the 5 April deadline — it does not carry over. See the

.

3. Salary sacrifice: beat National Insurance too

Salary sacrifice means formally giving up part of your salary in exchange for an employer benefit — most commonly a pension contribution, but also electric cars and the Cycle to Work scheme. Because the sacrificed amount never counts as your pay, you save both income tax and National Insurance on it.

• A higher-rate taxpayer sacrificing £1,000 into a pension saves £400 income tax and the NI on that slice.
• Many employers add some or all of their own NI saving to your pension on top.

The trade-off is a lower headline salary, which can marginally affect mortgage affordability and earnings-linked statutory payments. For most people the efficiency gain outweighs that. Compare the methods with the

and see the effect on your pay with the .

4. The Marriage Allowance: a quick £252

If one spouse or civil partner is a non-taxpayer (income below £12,570) and the other is a basic-rate taxpayer, the non-taxpayer can transfer £1,260 of their Personal Allowance to their partner. That cuts the basic-rate partner's tax by up to £252 a year.

You can backdate the claim up to four tax years, so a first-time claim can be worth over £1,000 in one go. It is free to apply through HMRC. Check eligibility and the saving with the

.

5. Gift Aid: relief on charitable giving

When you donate to a UK charity and tick Gift Aid, the charity reclaims 25p for every £1 you give. But there is a second layer for higher and additional-rate taxpayers: you personally claim the difference between your rate and basic rate through your tax return.

• A higher-rate donor giving £100 (£125 grossed up) reclaims £25 — so the donation costs them a net £75.
• Gift Aid donations also extend your basic-rate band, which can help pull other income out of the higher band.

Keep records of donations and claim them on your Self Assessment return. You can also carry a donation back to the previous tax year in some cases.

6. Shift income to a lower-earning spouse

Spouses and civil partners can transfer assets between themselves with no capital gains tax. By moving income-producing assets — savings accounts, shares, rental property — into the name of the lower-earning partner, the income they produce can fall into:

• The partner's unused Personal Allowance (taxed at 0%).
• A lower band (basic rather than higher rate).
• A second dividend allowance (£500) and Personal Savings Allowance (£1,000 for a basic-rate taxpayer).

This is one of the most effective household strategies and is entirely legitimate, provided the transfer is a genuine, outright gift and not a paper arrangement where the original owner keeps control. For jointly held property, the split of income usually follows ownership shares (with a Form 17 election available for married couples holding property as tenants in common).

7. EIS and VCT: 30% relief for the adventurous

For higher earners comfortable with risk, two government-backed schemes offer 30% income tax relief:

• Enterprise Investment Scheme (EIS): invest in qualifying early-stage companies, up to £1m a year (£2m if some is in knowledge-intensive companies), for 30% income tax relief, plus CGT deferral and tax-free gains if held for the qualifying period.
• Venture Capital Trusts (VCT): invest up to £200,000 a year in a listed fund of small companies for 30% income tax relief and tax-free dividends, provided you hold the shares for at least five years.

These are high-risk, illiquid investments — the relief exists precisely because the underlying companies are risky. They suit people who have already filled their pension and ISA allowances and can afford to lose the capital. This is an area where regulated advice is strongly recommended.

8. Use the trading and property allowances

If you have a small side income, the £1,000 trading allowance and £1,000 property allowance let you earn up to £1,000 from each, tax-free, with no need to report it. Above that you can choose to deduct the £1,000 allowance instead of actual expenses if it gives a better result. Useful for casual eBay selling, occasional freelancing or a bit of rental income.

9. Claim everything you are entitled to

A surprising amount of tax goes unreclaimed simply because people do not ask:

• Higher-rate pension relief in relief-at-source schemes.
• Working from home tax relief where you meet the conditions.
• Professional subscriptions and uniform/flat-rate expenses for employees.
• Marriage Allowance backdated four years.
• Overpaid tax through an incorrect tax code — check your code is right.

These are not aggressive moves; they are money you have already been promised. The

helps you sense-check whether your deductions look right.

10. Time your gains and use the CGT exemption

The CGT annual exempt amount is £3,000 for 2026/27, with gains above it taxed at 18% (basic-rate band) or 24% (higher). You can:

• Realise gains across two tax years to use two £3,000 exemptions.
• Transfer assets to a spouse before selling, to use a second exemption and possibly a lower rate.
• Use Bed and ISA to move holdings into the tax-free ISA wrapper, crystallising gains within the exemption as you go.

Avoidance versus planning: stay on the right side

There is a clear line between legitimate tax planning and tax avoidance:

• Planning uses reliefs and allowances as Parliament intended — pensions, ISAs, Gift Aid, the Marriage Allowance. This is encouraged and entirely legal.
• Avoidance uses artificial, contrived arrangements with no commercial purpose other than dodging tax. HMRC challenges these, they can be caught by the General Anti-Abuse Rule (GAAR), and "too good to be true" schemes often end in large bills plus interest and penalties.

Everything in this guide is firmly on the planning side. If a scheme promises to wipe out your tax bill through complex offshore structures or loans-that-are-not-really-loans, walk away.

A worked household example

The Patels are married. He earns £70,000; she earns £8,000 part-time and is a non-taxpayer.

• Marriage Allowance: she transfers £1,260 of her Personal Allowance to him — but wait, he is a higher-rate taxpayer, so they cannot use it. Instead they move her into using her full allowance via income shifting.
• Income shifting: they move the family savings and a small share portfolio into her name. The interest and dividends now fall within her unused Personal Allowance and Personal Savings Allowance — taxed at 0% instead of 40%/35.75% in his hands.
• Pension: he sacrifices £5,000 of salary into his pension, saving 40% income tax and NI, and pulling his taxable income down toward £60,000 to start escaping any child benefit charge.
• ISAs: they each fund an ISA so future growth is tax-free.

None of this is exotic — it is the ordinary machinery of the tax system, used deliberately. Across a year it can save a household several thousand pounds.

Putting it together

The reliable, legal ways to pay less UK tax in 2026/27 are pensions, ISAs, salary sacrifice, the Marriage Allowance, Gift Aid and sensible income arrangement across a household — with EIS and VCT for higher earners who have used everything else and accept the risk. Start by modelling a pension contribution and your take-home pay, then work through the household-level moves. Use the

and the to see the numbers for your own situation.

This article is general information, not financial advice. Figures use 2026/27 UK rates. EIS and VCT are high-risk investments — seek regulated advice. Tax planning that strays into artificial avoidance can be challenged by HMRC.