Personal Allowance Explained – How Much Can You Earn Tax-Free?

Ever looked at your payslip and wondered why you’re not taxed on every single pound you earn? That’s your UK Personal Allowance at work — and understanding it properly can help you plan your finances, spot payroll mistakes, and even make smarter decisions about pay rises, side income, or pension contributions UK Personal Allowance.

In this guide, we’ll break down exactly what the Personal Allowance is, how much you can earn tax-free, who qualifies, and what can reduce or increase it. UK Personal Allowance No jargon, no confusing tax-speak — just a clear, practical explanation UK Personal Allowance.

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What Is the Personal Allowance?

The Personal Allowance is the amount of income you can earn each tax year before you start paying Income Tax. UK Personal Allowance Think of it as a tax-free buffer built into the system — everyone gets it (unless certain conditions apply), and it applies automatically through PAYE if you’re employed UK Personal Allowance.

For the 2025/26 tax year, the standard Personal Allowance is:

£12,570

This means if you earn £12,570 or less in a tax year, you pay no Income Tax at all. UK Personal Allowance Anything above that threshold is taxed according to the relevant tax bands UK Personal Allowance.

How the Personal Allowance Works in Practice

The UK tax year runs from 6 April to 5 April the following year. UK Personal Allowance Your Personal Allowance applies across this entire period, not per month or per job.

Example: If you earn £24,570 a year, here’s how it plays out:

Income Portion	Tax Treatment
First £12,570	Tax-free (Personal Allowance)
Remaining £12,000	Taxed at 20% (Basic Rate)

So you wouldn’t pay tax on your full salary — only on the amount above your allowance.

Current Income Tax Bands (2025/26)

Here’s how the Personal Allowance fits into the wider Income Tax system:

Band	Taxable Income	Tax Rate
Personal Allowance	Up to £12,570	0%
Basic Rate	£12,571 to £50,270	20%
Higher Rate	£50,271 to £125,140	40%
Additional Rate	Over £125,140	45%

Your Personal Allowance sits underneath all of this — it’s the tax-free layer before any of these rates apply.

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Who Gets the Personal Allowance?

Most UK residents are automatically entitled to the standard Personal Allowance if:

• You’re a UK taxpayer
• You don’t earn above £100,000 a year (more on this below)
• You haven’t transferred part of your allowance to a partner

If you’re employed, this is usually reflected in your tax code — most commonly 1257L, which tells your employer how much tax-free income to apply before deducting tax through PAYE.

How Your Tax Code Reflects Your Personal Allowance

Your tax code isn’t just a random string of letters and numbers — it directly represents your Personal Allowance.

Example: Tax code 1257L means:

• £12,570 tax-free allowance
• “L” indicates you’re entitled to the standard allowance

If your tax code looks different, it usually means something has changed — maybe you have additional income, a company benefit, or you owe tax from a previous year.

Common Tax Codes and What They Mean

Tax Code	Meaning
1257L	Standard Personal Allowance
BR	All income taxed at Basic Rate (no allowance applied)
0T	No Personal Allowance applied
K497	You owe tax that reduces your allowance further
NT	No tax deducted

If your tax code doesn’t match what you expect, it’s worth checking with HMRC or your payroll department, since an incorrect code can mean you’re overpaying or underpaying tax.

What Reduces Your Personal Allowance?

This is where many people get caught out. Your Personal Allowance isn’t fixed for everyone — it can shrink depending on your income.

High Earners (Over £100,000)

If your income goes above £100,000, your Personal Allowance starts reducing. UK Personal Allowance For every £2 you earn over £100,000, your allowance drops by £1.

Example: If you earn £110,000, that’s £10,000 over the threshold.

£10,000 ÷ 2 = £5,000 reduction

New Personal Allowance = £12,570 − £5,000 = £7,570

Once your income reaches £125,140, your Personal Allowance disappears completely — meaning your entire income is taxed.

This creates what’s often called the “60% tax trap”, because the effective tax rate in this income band can feel much higher than the standard 40% rate, due to the shrinking allowance.

Can You Increase Your Personal Allowance?

While you can’t simply “boost” your allowance, there are legitimate ways to reduce your taxable income, which can help you stay within a lower band or protect your allowance from shrinking:

• Pension contributions – Contributing more to your pension can lower your taxable income
• Marriage Allowance – If your partner earns less than the Personal Allowance, they may be able to transfer up to £1,260 of their unused allowance to you
• Charitable donations (Gift Aid) – These can also adjust your taxable income in certain cases

Marriage Allowance Example

If your partner earns £10,000 a year (below the £12,570 threshold), they have £2,570 of unused allowance. They can transfer up to £1,260 of this to you, potentially reducing your tax bill by up to £252 a year.

Personal Allowance for Different Income Types

The Personal Allowance doesn’t just apply to salary — it applies to your total taxable income, which can include:

• Employment income
• Self-employment profits
• Rental income
• Some pension income
• Certain benefits

However, it does not apply to:

• Tax-free savings interest (covered separately under the Personal Savings Allowance)
• ISA income
• Certain government benefits

Step-by-Step: How to Check If You’re Getting the Right Allowance

1. Check your tax code on your latest payslip
2. Compare it to the standard code (1257L) for the current tax year
3. If it’s different, check HMRC’s explanation for that code
4. Confirm your total income hasn’t crossed the £100,000 threshold
5. If you’re married or in a civil partnership, check if Marriage Allowance applies
6. Contact HMRC directly if anything looks incorrect

Why Understanding Your Personal Allowance Matters

Knowing how the Personal Allowance works isn’t just useful trivia — it has real financial impact:

• It helps you understand exactly how much of your income is tax-free
• It explains why your take-home pay changes if you get a raise near £100,000
• It helps you make informed decisions about pension contributions
• It allows you to spot tax code errors before they cost you money

A small misunderstanding here can lead to overpaying tax for months without realising it — which is exactly why it’s worth taking ten minutes to understand properly.

Final Thoughts

Understanding the UK Personal Allowance gives you a clearer picture of how much of your income is genuinely yours to keep before tax. UK Personal Allowance Whether you’re checking your tax code, planning around a pay rise, or simply trying to make sense of your payslip, knowing how this allowance works puts you in a stronger position.

Take a moment to check your own tax code today — it only takes a minute, but it could save you from paying more tax than you actually need to UK Personal Allowance.

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