How Much Can You Earn Before Paying Tax in the UK?
How much can you earn before having to pay tax? As a sole trader or small business owner, understanding when you start owing income tax is crucial.
So, how much can you earn before having to pay taxes? As a sole trader or small business owner, understanding when you start owning income tax is crucial.
If you’re self-employed or running a small business, knowing exactly where the tax threshold sits is one of the most practical things you can do. There’s a specific amount you can earn each year without paying a penny in income tax — and understanding it helps you plan your finances properly rather than getting caught out.
£12,570
Personal Allowance for 2024/25 — the amount most UK taxpayers can earn before paying income tax. That works out to approximately £1,047.50 per month.
For most people in the UK, the Personal Allowance is £12,570 for the 2024/25 tax year. Earn below that and you won’t owe any income tax. Earn above it and you pay tax on the excess — at rates that depend on how much you earn.
This guide explains how the Personal Allowance works, what counts as taxable income, and how to reduce your tax bill legally and efficiently.
Key Takeaways
- The Personal Allowance is £12,570 for most UK taxpayers
- You only pay tax on income above this threshold
- Self-employed income is taxed on profit, not total earnings
- Tax rates increase depending on your income band
- Claiming expenses and reliefs can significantly reduce your tax bill
What counts as taxable income?
Not everything you earn is subject to income tax, and understanding the difference is essential.
Taxable income includes:
- Salary and wages
- Self-employed profits
- Rental income
- Dividends above the allowance
If you’re self-employed, your taxable income is calculated as:
Total income – allowable expenses = taxable profit
This is why expenses play such a critical role in reducing your tax liability.
Income that is typically not taxed:
- ISA interest
- Premium Bond winnings
- A portion of savings interest (depending on your tax band)
How the tax bands work above the Personal Allowance
Once your income exceeds £12,570, you pay tax on the amount above that threshold. The rate depends on where your total income falls:
- Basic rate (20%): income between £12,571 and £50,270
- Higher rate (40%): income between £50,271 and £125,140
- Additional rate (45%): income above £125,140
There’s an important trap here if your income climbs above £100,000. At that point, your Personal Allowance starts to reduce — by £1 for every £2 you earn above £100,000. Once your income hits £125,140, your Personal Allowance is gone entirely, which means you’re effectively paying a 60% marginal rate on income between £100,000 and £125,140. Pension contributions and charitable donations can help manage this.
How much can you earn before paying tax per month?
The Personal Allowance of £12,570 is an annual figure, but if you think about your income monthly, it breaks down to approximately £1,047.50 per month.
This is the monthly tax-free threshold for 2024/25. Earn below that in a given month and — assuming that’s representative of your annual income — you won’t owe income tax. Earn above it and you’ll pay tax at 20% on the excess (assuming your total annual income stays in the basic-rate band).
One thing to note: income tax is calculated on your full-year income, not month by month. If you have a particularly strong month early in the year, that doesn’t mean you’ve ‘used up’ your allowance — HMRC looks at the total picture. But thinking in monthly terms is a perfectly reasonable way to plan your cashflow.
How to reduce your taxable income
The Personal Allowance isn’t the only thing working in your favour. There are several ways to reduce the amount of income that’s subject to tax:
- Claim all your allowable expenses. If you’re self-employed, every pound of legitimate business expense reduces your taxable profit. Office costs, travel, subscriptions, phone and broadband, marketing — all of these reduce your tax bill if claimed correctly.
- Pay into a pension. Pension contributions attract tax relief, effectively reducing your taxable income pound for pound. For higher-rate taxpayers, this is particularly valuable.
- Use your savings allowance. Basic-rate taxpayers can receive up to £1,000 in savings interest tax-free. Higher-rate taxpayers get £500.
- Marriage Allowance. If you’re married or in a civil partnership and one partner earns below the Personal Allowance, they can transfer up to £1,260 of their allowance to the higher earner, saving up to £252 in tax.
- R&D tax relief. If your business carries out qualifying research and development, you may be able to claim R&D tax credits against your tax bill.
A worked example
Say you’re a sole trader and your business profit for 2024/25 comes to £22,000. Here’s how your income tax would work:
- Subtract your Personal Allowance: £22,000 − £12,570 = £9,430 taxable income
- Apply the basic rate: £9,430 × 20% = £1,886 in income tax
Your tax bill would be £1,886. You’d also owe Class 4 National Insurance on profits above £12,570, but that’s calculated separately.
Now, if you also had £3,000 of allowable expenses that you’d properly claimed, your taxable profit drops to £19,000, and your tax bill falls to £1,286. That’s a £600 difference from a single set of records — which is why keeping on top of your expenses matters.
What about Self Assessment deadlines?
If you’re self-employed, you report your income and expenses through a Self Assessment tax return, due by 31 January each year (for online filing). The deadline covers the previous tax year — so the return for 2024/25 is due by 31 January 2026.
Missing the deadline triggers an immediate £100 penalty, and further penalties apply the longer you leave it. If you’ve missed a deadline, file as soon as possible — late is always better than never, and acting quickly limits the damage.
How Making Tax Digital (MTD) Changes Things
From April 2026, Making Tax Digital will change how many sole traders report income.
Key changes:
- Quarterly digital submissions
- Mandatory digital record keeping
What remains the same:
- Personal Allowance
- Tax thresholds
- Allowable expense rules
Using accounting software can simplify compliance and reduce errors.
Frequently Asked Questions
Most people can earn £12,570 per year before paying income tax.
No, unless your Personal Allowance is reduced due to higher income.
Income tax is calculated annually based on total earnings.
Yes, but it applies to profits after expenses, not total income.
Your Personal Allowance reduces, increasing your effective tax rate.
Final thoughts
Now that you know how much you can earn before paying tax, the next step is to make sure you’re filing your Self Assessment tax return correctly. Knowing how much tax you’ll need to pay will help you plan your finances better and avoid any unexpected bills down the line.
Remember, the Personal Allowance for the 2024/25 tax year is £12,570, so as long as your income stays below that, you won’t owe any income tax. If you’re not sure about your situation, it’s always a good idea to talk to an accountant or check out resources like our Self Assessment guides for more advice.
It’s also worth noting that Making Tax Digital is changing the way sole traders and small business owners file their taxes. As these new rules take effect in the coming years, staying compliant will mean keeping digital records and submitting updates online.
Tax can be complicated, but on the right knowledge, planning, and support, you can keep your finances running smoothly.
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