Disclaimer: BeautyKiln gives general information, not legal, tax or financial advice. Talk to a qualified professional before making big decisions.

1 - Self-Assessment for Hairdressers: Complete Guide

If you're self-employed - whether you rent a chair, work mobile, or run your own salon - you almost certainly need to file a Self-Assessment tax return every year. This guide walks you through the whole process: registering with HMRC, getting your UTR number, knowing what you can claim, filing your return, and avoiding penalties. It covers hairdressers, barbers, and anyone in the beauty industry working for themselves.

Quick rule of thumb: if nobody is deducting tax from your pay before you get it, you need to sort your own tax - and that means Self-Assessment.

Do you need to file a Self-Assessment return?

You need to register for Self-Assessment if any of these apply:

• You rent a chair or booth in a salon
• You work mobile (going to clients' homes)
• You run your own salon as a sole trader
• You earn untaxed income above £1,000 in a tax year
• You're in a business partnership

If a salon employs you on PAYE (they deduct your tax and NI before paying you), you probably don't need to file - unless you have other untaxed income on the side.

Chair renters: if you pay a weekly or monthly fee to use a chair in someone else's salon and you find your own clients, you are almost certainly self-employed. That means Self-Assessment applies to you. See our guide on Understanding Your Employment Status for more detail.

Step 1: Register with HMRC and get your UTR number

As soon as you start working for yourself, you need to register with HMRC as self-employed. You can do this online at gov.uk/register-for-self-assessment.

HMRC will send you a Unique Taxpayer Reference (UTR) - a 10-digit number. This is yours for life. Keep it safe. You'll need it every time you file a return or contact HMRC about your tax.

Registration can take up to 10 working days (sometimes longer by post). Don't leave it until January - register as soon as you start earning.

Tip for new starters: Your first Self-Assessment return is due by 31 January after the end of your first tax year. If you started self-employment in June 2026, your first return covers 6 April 2026 to 5 April 2027, due by 31 January 2028. Register with HMRC and start keeping records from day one - don't wait until tax season.

You'll also need to set up a Government Gateway account to file online. This is separate from your UTR. You'll get a User ID and password. Again, keep these somewhere safe.

Step 2: Know your deadlines

The tax year runs from 6 April to 5 April the following year.

Example: For the 2025/26 tax year (6 April 2025 to 5 April 2026), your online return is due by 31 January 2027 and your tax bill must be paid by the same date.

Step 3: Keep proper records

You need to keep records of all your income and expenses. HMRC can ask to see them at any time, and you must keep them for at least 5 years after the 31 January submission deadline.

What to record:

• Every payment you receive (cash, card, bank transfer)
• Every business expense (receipts, invoices, bank statements)
• Mileage if you travel to clients
• Any tips you receive (yes, tips count as income)

How to record it:

• A simple spreadsheet works fine
• Apps like FreeAgent, QuickBooks, or Xero do the heavy lifting for you
• A shoebox of receipts is better than nothing, but a spreadsheet is better than a shoebox

Cash payments: you must record all cash payments. HMRC knows the beauty industry handles a lot of cash and they do investigate. Don't skip it.

Tip for new starters: Open a separate bank account for your business from the start. It does not need to be a business account - a free personal current account works fine. Having all your business income and expenses in one place makes record-keeping much simpler and saves hours when you file your return.

Step 4: Understand what you owe

The basics

Your tax bill is based on your profit - that's your total income minus your allowable expenses.

You also pay Class 2 National Insurance (£3.50/week (2025-26 rate), collected through your tax return) and Class 4 National Insurance (6% on profits between £12,570 and £50,270, then 2% above that).

Payments on account

If your tax bill is over £1,000, HMRC will ask you to make payments on account - basically paying next year's tax in advance in two instalments:

• 31 January - first payment (50% of last year's bill)
• 31 July - second payment (50% of last year's bill)

This catches a lot of people out in their second year. You could end up paying 150% of your normal bill in one go (last year's balance + first payment on account for next year). Budget for it.

Step 5: Claim your allowable expenses

This is where you save money. Everything you spend wholly and exclusively for your business can be deducted from your income before you calculate tax.

Common expenses for hairdressers and barbers

You cannot claim: your own haircuts, personal clothing (even if you look smart for work), commuting from home to a fixed salon, fines or penalties.

For a deeper dive, see our guide on Allowable Expenses for Beauty Workers.

Step 6: File your return online (step by step)

1. Go to gov.uk/log-in-file-self-assessment-tax-return
2. Log in with your Government Gateway User ID and password
3. Select the correct tax year
4. Fill in your personal details - name, address, UTR, NI number
5. Go to the self-employment section - enter your business description (e.g., "hairdressing services" or "freelance barber")
6. Enter your total income for the year - every penny you earned from hairdressing
7. Enter your total expenses - either itemised (recommended) or as a single figure
8. Check the calculation - HMRC's system works out your tax automatically
9. Submit - you'll get a confirmation with a reference number. Save it.
10. Pay your bill by 31 January - via bank transfer, direct debit, or debit card (credit cards aren't accepted for personal tax)

The whole thing takes 30-60 minutes if your records are in order. If your records are a mess, it takes a miserable afternoon. Keep on top of it through the year.

Penalties for getting it wrong

HMRC doesn't mess about with penalties:

A return that's a year late with unpaid tax can easily rack up over £1,600 in penalties - on top of the tax you still owe. Don't let it slide.

Common mistakes to avoid

1. Not registering at all - "I only earn a bit on the side" isn't a defence. If you're over the £1,000 trading allowance, register.
2. Forgetting cash payments - every cash job counts as income. HMRC cross-checks bank deposits and lifestyle.
3. Missing the 31 January deadline - set a reminder for December. Don't wait until 30 January.
4. Not saving for your tax bill - put 25-30% of your profit aside in a separate account every month. When January comes, the money is there.
5. Claiming personal expenses as business - your Netflix subscription is not a business expense. Your gym membership almost certainly isn't either.
6. Throwing away receipts - keep everything for 5 years. Take photos of paper receipts - they fade.
7. Ignoring payments on account - the July payment catches people every year. Budget for it.

Making Tax Digital

From April 2026, if you earn over £50,000 from self-employment, you'll need to keep digital records and send quarterly updates to HMRC using compatible software. From April 2027, the threshold drops to £30,000. This is called Making Tax Digital for Income Tax (MTD ITSA).

For full details, see our guide on Making Tax Digital: What It Means for You.

What to do next

1. Register for Self-Assessment at gov.uk/register-for-self-assessment if you haven't already
2. Set up a separate bank account for your business income - it makes record-keeping much easier
3. Start tracking income and expenses now - use a spreadsheet or an app like FreeAgent or QuickBooks
4. Put 25-30% of your profit aside every month into a savings account for your tax bill
5. Put 31 January and 31 July in your calendar with reminders a month before each

Who to Contact

• HMRC Self-Assessment helpline - general SA queries - 0300 200 3310 (Free)
• HMRC Payment Support - if you are struggling to pay your tax bill - 0300 200 3835 (Free)
• HMRC webchat - available via gov.uk - gov.uk/contact-hmrc (Free)
• TaxAid - free tax advice for people on low incomes - taxaid.org.uk (Free)
• Citizens Advice - general guidance on tax and self-employment - 0800 144 8848 (Free)
• MoneyHelper - free financial guidance from the government - 0800 138 7777 (Free)
• National Hair & Beauty Federation (NHBF) - trade body with tax guidance - nhbf.co.uk (Membership required)
• A local accountant - if you want someone to handle it for you - expect to pay £150-400/year for a basic SA return (Paid)

Sources

• Income Tax Act 2007, legislation.gov.uk
• HMRC Self-Assessment guidance, gov.uk/self-assessment-tax-returns
• HMRC penalties for late filing, gov.uk/self-assessment-tax-return-penalties
• HMRC expenses if you're self-employed, gov.uk/expenses-if-youre-self-employed
• National Insurance rates 2025/26, gov.uk/national-insurance-rates-letters

Related Guides

• Making Tax Digital: What It Means for You
• Allowable Expenses: What You Can Claim
• Understanding Your Employment Status
• Registering as Self-Employed
• Payments on Account Explained
• National Insurance for Self-Employed Beauty Workers

Try these tools

What to do next

Didn't find what you were looking for?