One of the most common freelancer worries is: how much should I put aside for tax? The honest answer is that no general website can tell you your exact number. Your tax depends on your profit, other income, allowances, National Insurance, student loans, payments on account and personal circumstances.
What this guide can do is help you build a safer habit. It gives a plain-English way to think about tax set-asides without pretending there is one magic percentage for every UK freelancer.
Start with profit, not bank balance
Sole traders are generally taxed on profit, not simply on the money in the bank. Profit means business income minus allowable business expenses. If you invoice £30,000 and have £5,000 of allowable business expenses, your profit before other adjustments may be different from someone who invoices £30,000 with almost no costs.
This is why good records matter. If you do not know your income and expenses, you cannot make a sensible tax estimate. Read the Tax Basics guide and the Sole Trader Expenses Guide if this is still new.
Why percentages are only rough
You may hear freelancers say they put aside 20%, 25% or 30% of income. That can be a useful habit for some people, but it is not a personalised calculation. A side-hustler with PAYE income may have a different tax position from someone freelancing full time. Someone with payments on account may need to plan differently from someone in their first year.
A rough percentage can help you avoid spending everything, but you should still estimate your actual bill using HMRC tools, accounting software or professional advice where needed.
A cautious beginner routine
A simple routine is to move a percentage of each client payment into a separate tax savings pot as soon as it arrives. Then, once a month, update your records and compare the pot with your estimated tax position. If the pot looks too low, adjust early rather than waiting for the deadline.
Do not treat the tax pot as spare money. It is there to reduce January panic. If your final bill is lower than expected, that is a better problem than discovering you spent money that should have been reserved.
Remember payments on account
Payments on account catch many new freelancers by surprise. They are advance payments towards the next tax bill and can make the first larger Self Assessment payment feel heavier. GOV.UK explains that there can be a second payment deadline of 31 July if you make payments on account.
If payments on account apply, putting aside only enough for the balancing payment may not be enough. Check your HMRC calculation and ask for help if you do not understand it.
Software can help, but check the assumptions
Accounting software may show tax estimates based on the information entered. This can be useful, especially if you keep records up to date. But the estimate is only as good as the data and assumptions behind it. Missing expenses, wrong categories or missing income can change the picture.
If Making Tax Digital applies to you in future, software may become more important. Read the Best Accounting Software for UK Freelancers and Making Tax Digital checklist pages before choosing.
FAQs
Can Freelance Wallet UK tell me the exact percentage to save?
No. That would be personal tax advice. This page gives general habits and points to check.
Should I save from income or profit?
Saving from income is simple, but tax is usually based on profit. The safest habit depends on your costs and wider position.
What if I cannot pay my tax bill?
Contact HMRC as early as possible or speak to a qualified adviser. Do not ignore the deadline.
A simple example of why answers differ
Two freelancers can invoice the same amount and still need different tax set-asides. One may have PAYE income from a job, student loan repayments and low business expenses. Another may freelance full time, have higher allowable costs and need payments on account. A single percentage cannot safely describe both people.
That is why this site avoids saying “save exactly X%”. A rough percentage can be useful as a starting habit, but it should be reviewed against your real figures. If your income rises, your costs change or HMRC asks for payments on account, update the habit.
When to review your tax pot
Review your tax pot whenever you complete a monthly record update. Compare total income, likely allowable expenses and money already saved. Also review it after a large client payment, a quiet month, a big equipment purchase or a change in other income. Freelance income is often uneven, so a tax habit should be flexible enough to cope.
Do not forget National Insurance and other deductions
New freelancers sometimes think only about Income Tax. Depending on your profits and circumstances, National Insurance, student loan repayments or other Self Assessment items may also matter. This is another reason to use HMRC tools, software estimates or qualified help instead of relying on a single rule of thumb.
Related freelancer basics
- What Expenses Can UK Freelancers Claim?
- Freelancer Invoice Template UK: What to Include
- Sole Trader Tax Deadlines UK
- Do Freelancers Need a Business Bank Account?
- Record Keeping for UK Freelancers
- Self Assessment for Freelancers: Beginner Guide
- Freelancer Tax Checklist UK
Useful next guides
- Making Tax Digital hub
- Making Tax Digital checklist
- Best Accounting Software for UK Freelancers
- Sole Trader Expenses Guide
- Invoice Template for Freelancers
- Business Banking for Freelancers
- Tax Basics for UK Freelancers
Disclaimer: Freelance Wallet UK provides general information only. It is not financial, tax, legal or accounting advice. Tax rules can change, and your own position may be different. Always check official GOV.UK/HMRC guidance or speak to a qualified professional for your own situation.