What Is Basic Rate Tax in the UK?

How much is basic rate tax?

Basic rate tax is charged at 20% on taxable income between £12,570 and £50,270. The personal allowance covers the first £12,570 tax-free, and everything above that up to the higher rate threshold is taxed at the basic rate.

Around 30 million people in the UK are basic rate taxpayers. That makes it the most common income tax band by a wide margin — yet the mechanics catch more people out than you’d expect.

The basic rate of income tax sits at the centre of the UK tax system. It’s the band most earners fall into, whether under PAYE or through Self Assessment.

It shapes how much tax you pay on savings and your eligibility for Marriage Allowance. The 20% rate itself hasn’t changed in over a decade.

But the thresholds have been frozen since 2021, and that freeze is quietly dragging more basic rate earners into higher bands. If you’re asking what is basic rate tax — or how much tax do I pay — this page has the answer.

It explains the current UK income tax rates and income tax bands UK earners sit in. You’ll find a worked example, a breakdown of how basic rate tax UK rules apply to the self-employed, and what a BR tax code means.

Basic Rate Tax Explained

Income tax in the UK is a marginal system. Different portions of your income are taxed at different rates.

The basic rate of tax is the first taxable band above your tax-free personal allowance. For the 2026/27 tax year, the basic rate is 20%.

It applies to taxable income UK residents earn between £12,571 and £50,270. That £37,700 window — the gap between the £12,570 personal allowance and the £50,270 tax threshold — is called the basic rate band.

Only income inside this band gets charged at 20%.

Frankly, this is the bit that catches a lot of people out.

It’s easy to assume that crossing into the basic rate bracket means all your income is taxed at 20%. It doesn’t — the personal allowance still shelters the first £12,570 entirely.

HMRC collects basic rate tax in two ways. Employed earners have it deducted through PAYE tax rates each month.

Self-employed earners pay through Self Assessment after the year ends. The HMRC tax rates are identical in both cases.

Put simply, basic rate tax explained in one line: the HMRC basic rate is a 20% tax rate on income inside the basic rate band. What’s changed — quite significantly — is the frozen income tax thresholds, reshaping who pays what.

Where the 20% Band Sits

Four income tax bands apply for 2026/27 in England, Wales, and Northern Ireland:

• The tax free personal allowance covers income up to £12,570 — no tax is charged.
• The basic rate tax band runs from £12,571 to £50,270, taxed at 20%.
• Higher rate tax covers £50,271 to £125,140, taxed at 40%.
• Additional rate tax applies above £125,140, taxed at 45%.

These UK tax brackets haven’t moved since 2021/22. The basic rate tax threshold of £50,270 and the basic rate tax 2026/27 thresholds are identical to those in 2025/26.

GOV.UK confirms the freeze stays until at least April 2028. The 2025 Autumn Budget extended the wider freeze to April 2031.

Basic rate income tax UK taxpayers face is the same whether you earn in England, Wales, or Northern Ireland. Wages have risen with inflation during the freeze period.

A pay rise that once kept you inside the basic rate bracket can now tip you into the 40% tax rate band. The OBR estimates this brings 700,000 extra people into income tax by 2030/31.

That’s fiscal drag in action.

Scotland runs a different system entirely.

Scottish taxpayers face six bands rather than four. The Scottish basic rate (20%) covers only £16,538 to £29,526 for 2026/27 — a much narrower window than the rest of the UK.

A Worked Example at 20%

Numbers make this clearer. Take someone earning £30,000 a year through PAYE in England.

Their tax calculation for 2026/27 breaks down like this:

• Gross salary: £30,000.
• Personal allowance deducted: £12,570 (tax-free).
• Taxable income: £17,430.
• Basic rate tax at 20%: £3,486.

Total income tax is £3,486 for the year. That’s roughly £290.50 per month before National Insurance.

Across the full £30,000 salary, the effective tax rate is about 11.6%. That real-world figure is substantially lower than 20% because the personal allowance shelters a large chunk.

Now compare someone earning £50,000:

• Personal allowance: £12,570 (tax-free).
• Basic rate on £37,700 (the full band): £7,540.
• Total tax: £7,540.

Even at £50,000, the effective rate is only 15.1%. The form itself is straightforward enough once you see the arithmetic.

For anyone above £50,270, the portion beyond that enters the higher rate at 40%. The basic rate tax limit caps the slice taxed at 20% — not your earnings.

National Insurance is deducted separately on top. A £30,000 earner pays employee NICs at 8% on earnings between £12,570 and £50,270 — adding roughly £1,394 to the annual deductions.

Self-Employed and Basic Rate Tax

Self-employed earners pay the same 20% basic rate on taxable profits.

How income is earned doesn’t change the rate.

Collection is where it differs.

Under PAYE, your employer deducts tax monthly.

Self-employed earners file a Self Assessment tax return and pay HMRC directly — typically in two lump sums on 31 January and 31 July. That timing creates cashflow pressure PAYE earners don’t face.

HMRC requires payments on account — advance payments based on the previous year’s bill — for anyone whose liability exceeds £1,000. Taxable income for the self-employed means profits after allowable business expenses: equipment, travel, professional subscriptions, use-of-home costs.

Only the profit figure enters the basic rate tax band — not total revenue. According to HMRC guidance, self-employed earners should register for Self Assessment as soon as they begin trading.

Missing the deadline can result in penalties. Basic rate tax for self employed earners is identical in rate and thresholds — only the timing and method of payment differ.

What Being a Basic Rate Taxpayer Means

Your status as a basic rate taxpayer affects more than the percentage taken from your salary.

Several allowances and reliefs depend directly on your tax band.

• A Personal Savings Allowance of £1,000 applies for basic rate taxpayers. Higher rate taxpayers get only £500, and additional rate taxpayers get nothing.

That gap matters if you hold savings accounts earning interest.

• Marriage Allowance is only available where neither partner pays above the basic rate.

One partner can transfer up to £1,260 of unused personal allowance UK entitlement to the other. For 2026/27, that’s worth up to £252 in reduced tax.

• Dividend tax rates also differ by band. Basic rate taxpayers pay 10.75% on dividends above the £500 allowance for 2026/27.
• Pension tax relief works at the basic rate automatically.

A £100 pension contribution costs a basic rate taxpayer only £80 after the 20% relief is applied. Higher rate taxpayers can claim an extra 20% through Self Assessment.

Tax relief on work expenses also depends on your band. If you spend money on uniforms, tools, or professional subscriptions for your job, you can claim tax back at your marginal rate.

For basic rate taxpayers, that means 20% of the allowable amount. A £100 expense claim returns £20, compared to £40 at the higher rate

These practical consequences — savings allowances, marriage relief, dividend rates, pension top-ups and expense claims — are why your tax band matters beyond the headline 20%.

Above the Basic Rate Threshold

Once taxable income crosses £50,270, the 40% tax rate applies to the portion above that line. Income below it stays taxed at 20%.

At £55,000, the maths works like this. £4,730 is taxed at 40%, adding £1,892 to the £7,540 basic rate bill.

Total income tax: £9,432 — an effective rate of roughly 17%. A less obvious cliff edge sits at £100,000.

Above that level, the £12,570 personal allowance starts to disappear. HMRC withdraws it at £1 for every £2 above £100,000.

Between £100,000 and £125,140, the marginal rate effectively hits 60%. GOV.UK confirms the allowance is fully removed at £125,140.

Beyond that, the 45% tax rate kicks in. Around 1.14 million people sit in this additional rate bracket for 2024/25, according to HMRC statistics.

Fiscal drag bites hardest here. Earners who sat comfortably inside the basic rate bracket a few years ago may now find themselves just above the £50,270 line.

The basic rate tax bracket is where most UK earners sit. Knowing where it starts, where it ends, and what sits on either side is the foundation for understanding your tax position.

Check Your Basic Rate Tax Code

Your tax code tells your employer how much tax-free income to apply before deducting basic rate tax. For 2026/27, the standard code is 1257L — reflecting the £12,570 personal allowance.

A BR tax code means something different. It tells your employer to tax all income from that source at 20%, with no personal allowance applied.

This often happens when starting a new job without a P45. The full guide to the BR tax code on the tax codes page explains why this happens and how to correct it.

An incorrect code could mean months of overpaid tax.

Check your code through your personal tax account on GOV.UK — it takes about five minutes.

If HMRC finds an error, overpaid tax is repaid through future payslips.

Don’t leave it unchecked.

An incorrect basic rate tax code means overpaying until a P800 reconciliation catches it — and that can take months. If you’ve had a BR code in any of the previous four tax years, you may be owed a backdated refund.

HMRC repays those directly by cheque or bank transfer.

Key Takeaways

The basic rate of income tax affects most UK earners — here’s what to remember:

• Basic rate tax is 20% on income between £12,570 and £50,270 for 2026/27, with thresholds frozen until at least April 2028.
• Your effective tax rate is lower than 20% because the personal allowance shelters the first £12,570 — on a £30,000 salary, that’s about 11.6%.
• Self-employed earners pay the same 20% rate through Self Assessment, with tax due in two lump payments each year.
• Basic rate taxpayers get a £1,000 Personal Savings Allowance, Marriage Allowance eligibility, and automatic 20% pension tax relief.
• Check your tax code reads 1257L for 2026/27 — a BR code means no allowance is being applied.

Basic Rate Tax Questions Answered

These are the most common follow-up questions about basic rate tax that aren’t covered in full above.

Does the basic rate apply to pension income?

Yes. State pension and private pension income count as taxable income. If your total income falls within the basic rate band, pension payments are taxed at 20%.

Can I be a basic rate taxpayer in one job and higher rate in another?

Tax bands apply to your total income, not per job. If combined earnings push you above £50,270, the portion above that point is taxed at 40% regardless of which employer pays it.

What happens to the basic rate if the thresholds unfreeze?

The 20% rate itself is unlikely to change. If thresholds rise with inflation after the freeze ends, fewer people would be pushed into the higher rate band. But the basic rate percentage would stay the same.

Do I pay basic rate tax on rental income?

Rental income is added to your other taxable income. If the total falls within the basic rate band, the rental portion is taxed at 20%. Landlords can deduct a 20% tax credit for mortgage interest costs rather than the full expense.

Is basic rate tax deducted before or after National Insurance?

Income tax and National Insurance are calculated separately. Both are deducted from your gross pay, but they use different thresholds and rates. Your payslip shows them as two distinct deductions.