With income tax thresholds frozen until 2031, millions of UK workers are paying more tax than ever. Here are the most effective legal ways to reduce your bill.
Most people pay more tax than they need to — not because they're doing anything wrong, but simply because they haven't taken full advantage of what's available to them. The good news is that the UK tax system contains plenty of legal ways to reduce your bill, and many of them are straightforward to use.
In 2026/27, with the personal allowance still frozen at £12,570 and more people being dragged into higher rate tax through "fiscal drag", this matters more than ever. Here are the most effective strategies.
This is consistently the single most powerful legal tax-saving tool available to UK taxpayers. When you contribute to a pension, you get tax relief on contributions — meaning the government effectively tops up your pension with the tax you would have paid on that income.
If you're a basic rate taxpayer, every £80 you put into your pension becomes £100 in your pension pot — the government adds £20 tax relief. If you're a higher rate taxpayer, it's even better: you can claim back a further 20% through your self-assessment return, meaning £60 of your own money becomes £100 in your pension.
| Tax Rate | Your contribution | Government adds | In your pension | Effective cost to you |
|---|---|---|---|---|
| Basic (20%) | £80 | £20 | £100 | £80 |
| Higher (40%) | £60 | £40 | £100 | £60 |
| Additional (45%) | £55 | £45 | £100 | £55 |
If your income is between £100,000 and £125,140, you're in the 60% effective tax band — your personal allowance is being tapered away at a rate that creates an effective 60% marginal rate. Pension contributions are one of the few ways to escape this trap. Every £1 you put into your pension reduces your "adjusted net income" and could restore part of your personal allowance.
The annual allowance for pension contributions is £60,000 in 2026/27 (or 100% of your earnings if lower). You can also carry forward unused allowance from the previous three tax years. The lifetime allowance was abolished in April 2024, so there's no longer a cap on your total pension pot size.
Every adult in the UK can put up to £20,000 per year into an ISA (Individual Savings Account) in 2026/27. Money inside an ISA grows completely free of income tax and capital gains tax — forever. There's no tax to pay when you take money out either.
The dividend allowance has been cut to just £500, and capital gains tax rates have risen to 18% (basic rate) and 24% (higher rate) for most assets. If you hold investments or receive dividends outside an ISA, you'll pay tax on relatively small amounts. Moving investments into an ISA eliminates this entirely.
Salary sacrifice is an arrangement where you agree to give up part of your salary in exchange for a non-cash benefit. The key advantage is that you save both income tax and National Insurance on the sacrificed amount — and so does your employer, who may pass some of that saving on to you.
If you run your own limited company, the most tax-efficient way to pay yourself is typically a combination of a small salary and dividends. This is one of the main financial advantages of operating as a limited company rather than a sole trader.
Most directors pay themselves a salary of £12,570 per year (the personal allowance), or £9,100 (the secondary threshold for employer NI). This avoids income tax and, at the right level, also avoids employer National Insurance.
Income above the salary is then taken as dividends. In 2026/27, the first £500 of dividends is tax-free (the dividend allowance). Above that, basic rate taxpayers pay 10.75% on dividends — compared to 32% (20% income tax plus 12% NI) on equivalent salary. The saving is significant.
| Income type | Basic rate taxpayer | Higher rate taxpayer |
|---|---|---|
| Salary (income tax + NI) | 32% | 42% |
| Dividends | 10.75% | 35.75% |
| Saving per £1,000 | ~£213 | ~£63 |
Work out exactly how much dividend tax you'll pay in 2026/27
If one of you earns significantly more than the other, there are several ways to shift income to the lower earner and reduce your combined tax bill.
If one spouse earns less than the personal allowance (£12,570) and the other is a basic rate taxpayer, the lower earner can transfer £1,260 of their personal allowance to their partner. This saves £252 per year in income tax. You can also backdate claims up to four years.
Assets transferred between spouses are exempt from capital gains tax. If your investments are all in your name and you pay higher rate tax on dividends and gains, consider transferring some to a spouse who pays basic rate or no tax at all. This uses their dividend allowance, personal savings allowance and CGT allowance, and any gains are taxed at their lower rate.
If your spouse or partner genuinely works in your business, paying them a salary is legitimate and tax-efficient. They use their personal allowance, you get a business deduction, and the income is taxed in their hands at their (lower) rate. HMRC requires the salary to reflect actual work done at a commercial rate.
Surprisingly many people miss allowances they're entitled to. Here's a checklist of the most commonly overlooked:
Basic rate taxpayers can earn £1,000 in interest tax-free; higher rate taxpayers get £500. If your savings interest exceeds this, consider moving savings into a cash ISA or Premium Bonds (where prizes are completely tax-free).
If you work from home, you may be able to claim a flat-rate deduction of £6 per week (£312 per year) via HMRC's working from home relief, or actual additional costs if they're higher. Employees can claim this for any period they were required to work from home.
If you pay for professional memberships, trade union fees or job-related expenses that your employer doesn't reimburse, these can be deducted from your taxable income. HMRC maintains a list of approved professional organisations — worth checking if your profession is included.
Worth £3,070 in 2026/27. If you're registered blind or severely sight-impaired, you can transfer any unused allowance to a spouse or civil partner.
If you donate to charity via Gift Aid, higher and additional rate taxpayers can claim back the difference between their tax rate and the basic rate. A £100 Gift Aid donation costs a higher rate taxpayer just £60 after reclaiming 40p in tax relief per £1.
If you rent out a room in your home, the first £7,500 of income per year is completely tax-free under the Rent-a-Room scheme. If you share the income with someone else in the property, each person gets a £3,750 allowance.
When you receive income can be as important as how much you receive. A few timing strategies that can make a meaningful difference:
The tax year runs from 6 April to 5 April. If you're close to a tax threshold (particularly the £50,270 higher rate threshold or the £100,000 taper), consider whether you can time bonuses, dividend payments or business income to avoid crossing into a higher band.
Make sure ISA contributions are made before 5 April — unused allowances cannot be rolled over. The same applies to pension contributions if you're trying to carry forward from a previous year.
If you hold investments outside an ISA, you can sell them and immediately rebuy them inside an ISA. This uses your CGT annual allowance on any gains (the annual allowance is £3,000 in 2026/27) and moves future growth into a tax-free wrapper. It's particularly effective at the start of a new tax year.
The CGT annual allowance is £3,000 in 2026/27. You can realise this much in gains each year completely tax-free — but you cannot carry it forward if you don't use it. If you hold investments with unrealised gains, consider crystallising up to £3,000 per year to gradually reduce your future CGT exposure.
Married couples and civil partners each have a £3,000 allowance, meaning you can collectively realise £6,000 in gains tax-free each year. If you own investments jointly or have transferred some to your spouse, this is effectively doubled.
Calculate exactly how much CGT you'll pay on shares, property or other assets
The best tax planning is usually done before the end of the tax year, not after. Many of the strategies above — ISA contributions, pension contributions, crystallising CGT allowances — have hard deadlines of 5 April each year.
None of the strategies in this guide involve anything aggressive or artificial. They're simply making full use of reliefs and allowances that Parliament has explicitly put in place. HMRC actively encourages people to use them.
For anything complex — particularly around salary sacrifice, dividend strategies or income splitting — it's worth speaking to a qualified accountant or financial adviser. The potential savings often significantly outweigh the cost of professional advice.