Self Assessment Tax Return Checklist for Creative Business Owners

Is your Self Assessment tax return still sitting on your to-do list?

If you’re a creative business owner, freelancer or sole trader, completing your Self Assessment tax return can feel like one of those jobs you’d rather put off until the last minute.

There are invoices to find, expenses to check, bank statements to download and suddenly that “quick admin job” has turned into an entire afternoon or longer!

The good news? A little preparation can make the process much easier.

Whether you’re a photographer, designer, artist, maker, illustrator, copywriter, stylist, creative consultant or another type of creative freelancer, this checklist will help you gather the information you need before you start your tax return.

This checklist is designed for UK Self Assessment taxpayers. Tax rules can vary depending on your circumstances, so use it as a preparation tool rather than a substitute for professional tax advice.

1. Check your tax return deadline

First things first: know which tax year you’re completing your return for and when it needs to be submitted.

For online Self Assessment returns, the usual deadline is 31 January following the end of the tax year.

For example, the 2025/26 tax year started on 6th April 2025 and ended on 5 April 2026, with the online tax return due by 31 January 2027.

There can also be a payment deadline on 31 January, and some taxpayers may have a second payment on account due on 31 July.  This is important to note if this is your first return as it often catches people out.

☐ I know which tax year I am completing my return for.

☐ I know my filing deadline.

☐ I know when my tax payment is due.

☐ I have allowed enough time to complete my return rather than leaving it until the deadline.

2. Gather your business income

This is particularly important for creatives because income can come from lots of different places.

You might have:

• Client invoices

• Design or creative fees

• Photography bookings

• Art or print sales

• Craft or product sales

• Workshops or courses

• Consultancy

• Affiliate income

• Commission

• Licensing income

• Royalties

• Online marketplace sales

• Payments through platforms such as PayPal or Stripe

• Other freelance work

Go through your records and make sure you've captured all of your business income for the relevant tax year.

☐ I have a record of all my sales and client income.

☐ I have checked my bank statements.

☐ I have checked payment platforms.

☐ I have included income from online marketplaces.

☐ I have checked for cash payments.

☐ I have included any other relevant business income.

Creative business tip: Don't rely solely on the money that landed in your main business bank account. If you use several payment methods or platforms, check each one.

3. Check your invoices

Your invoices can be a useful way of cross-checking your income records.

Look through your invoice numbers and check for gaps.

☐ Are all your invoices accounted for?

☐ Are there any unpaid invoices?

☐ Have you accidentally recorded an invoice twice?

☐ Have you included income received through different payment platforms?

☐ Do your bookkeeping records match your invoices?

If something doesn't add up, investigate it before submitting your return.

4. Work through your business expenses

This is one of the areas where creative business owners can easily miss legitimate costs.

Depending on your circumstances, your business expenses might include things such as:

Creative equipment

☐ Camera equipment

☐ Lenses

☐ Lighting

☐ Microphones

☐ Art supplies

☐ Craft materials

☐ Tools and equipment

Software and subscriptions

☐ Adobe or other creative software

☐ Website software

☐ Cloud storage

☐ Accounting software

☐ Design resources

☐ Fonts, templates or stock assets

☐ Professional memberships

Marketing

☐ Website costs

☐ Domain name

☐ Advertising

☐ Printed marketing materials

☐ Business cards

☐ Promotional materials

Professional costs

☐ Accountant or tax adviser

☐ Legal or professional advice

☐ Bank charges

☐ Business insurance

☐ Relevant professional subscriptions

Office and working costs

☐ Stationery

☐ Printing

☐ Postage

☐ Phone costs

☐ Internet costs

☐ Office equipment

☐ Studio or workspace costs

Remember that not every purchase is automatically an allowable expense. There are specific rules about what can be claimed and how certain costs, particularly equipment and mixed business/private expenses, are treated.

5. Don't forget working from home

If you work from home, don't automatically assume you can't claim anything towards your household costs.

Depending on your circumstances and the method you use, you may be able to claim certain costs associated with working from home.

These can include relevant proportions of costs such as:

• Electricity and gas

• Metered water

• Internet

• Council tax

• Rent

There are different rules and methods for calculating these costs, so make sure you use the method that applies to your circumstances.

☐ I have checked whether I can claim for working from home.

☐ I have kept the relevant records.

☐ I have checked whether the simplified expenses method is appropriate for me.

6. Check your travel and mileage

Creative businesses often involve travelling to clients, exhibitions, shoots, markets, workshops, meetings and events.

Go through your diary and calendar and think about your business journeys.

☐ Have I recorded relevant business journeys?

☐ Have I kept mileage records where required?

☐ Have I kept receipts for relevant travel costs?

☐ Have I separated business travel from private travel?

Be careful here: travelling for business purposes isn't automatically allowable simply because it relates to your work. The tax treatment depends on the circumstances and the nature of the journey.

7. Check equipment and larger purchases

Bought a new camera? Laptop? Computer? Sewing machine? Printer? Tools? Studio equipment?

Don't simply put every large purchase into your normal expenses without checking how it should be treated.

Some equipment and other assets may need different treatment for tax purposes, including through capital allowances.

☐ I have identified my larger business purchases.

☐ I have kept the receipts.

☐ I know how each purchase should be treated for tax.

☐ I've checked whether capital allowances or other tax rules apply.

If you're unsure, this is an area where professional advice can be particularly useful.

8. Check whether you have mixed business and personal expenses

Creative business owners often use the same things for both work and personal life.

Your phone might be used for client calls and family calls.

Your laptop might be used for business and Netflix.

Your car might take you to a photoshoot and the supermarket.

That doesn't necessarily mean you can't claim anything — but you generally need to consider the business proportion rather than automatically treating the entire cost as a business expense.

☐ I have identified mixed-use costs.

☐ I have worked out a reasonable business proportion where appropriate.

☐ I haven't accidentally claimed private expenditure as a business expense.

9. Check your bank statements

Your bank statement can be one of your best detective tools.

Go through the relevant period and look for:

Income

☐ Client payments

☐ Marketplace payments

☐ Platform payments

☐ Other business income

Expenses

☐ Software

☐ Equipment

☐ Advertising

☐ Travel

☐ Insurance

☐ Professional fees

☐ Materials

☐ Subscriptions

☐ Other business costs

Don't forget to check PayPal, Stripe, Etsy or other platforms separately if you use them.

10. Check your records

HMRC requires taxpayers to keep records supporting their tax return.

Before you submit, make sure you know where your records are stored.

☐ Bank statements

☐ Invoices

☐ Receipts

☐ Expense records

☐ Mileage records

☐ Sales records

☐ Payment platform statements

☐ Accounting/bookkeeping records

☐ Relevant correspondence

☐ Records supporting any claims

You do not send all of these documents with your tax return, but you need to keep appropriate records in case HMRC asks to see them.

11. Check other income

Your creative business isn't necessarily the only thing that needs to appear on your Self Assessment return.

Depending on your circumstances, you may also need to consider other sources of income.

For example:

☐ Employment income

☐ Pension income

☐ Property income

☐ Savings interest

☐ Dividend income

☐ Foreign income

☐ Other taxable income

Don't assume that because something isn't part of your creative business, it doesn't belong on your tax return.

12. Check your personal details

Before submitting, check the basics.

☐ Name

☐ Address

☐ National Insurance number

☐ UTR

☐ Bank details, if relevant

☐ Tax year

☐ Business details

Small errors can cause unnecessary problems, so take a few minutes to check everything carefully.

13. Check your figures

Now it's time for the final sense check.

Ask yourself:

Does my turnover look right?

Does my expense total look right?

Does my profit look broadly as expected?

Have I accidentally entered something twice?

Have I missed a zero?

Have I left anything out?

If your figures look dramatically different from previous years, don't panic, but do investigate why.

Perhaps you've had an unusually busy year.

Perhaps you've invested heavily in equipment.

Perhaps you've changed your pricing.

Or perhaps you've made a simple data-entry mistake.

14. Check your tax payment

One of the biggest surprises for new sole traders is discovering that completing the tax return and paying the tax are two separate parts of the process.

Before you submit, make sure you understand:

☐ How much tax you owe.

☐ When it needs to be paid.

☐ Whether National Insurance is relevant to your circumstances.

☐ Whether you have payments on account.

☐ Whether you have enough money set aside.

If the tax bill is more than you expected, don't ignore it.

Understanding what you owe, and when, gives you a much better chance of managing your cash flow.

15. Give yourself a final five-minute check

Before you press submit, step away from the numbers for a few minutes.

Then come back and ask:

☐ Have I included all my income?

☐ Have I checked all my business expenses?

☐ Have I checked for duplicated figures?

☐ Have I considered other income?

☐ Have I checked my personal details?

☐ Do I understand the amount I'm being asked to pay?

☐ Have I saved copies of my return and calculations?

☐ Am I happy that I've provided accurate information to the best of my knowledge?

Then, and only then, submit.

The Creative Business Owner's Tax Return Mini Checklist

If you want something you can screenshot and keep beside you, here's the short version:

INCOME

☐ Client income
☐ Product sales
☐ Online sales
☐ Royalties/commission
☐ Platform income
☐ Other business income

EXPENSES

☐ Materials
☐ Software
☐ Equipment
☐ Website/hosting
☐ Marketing
☐ Insurance
☐ Professional fees
☐ Bank charges
☐ Travel
☐ Phone/internet
☐ Workspace/home working costs

RECORDS

☐ Bank statements
☐ Invoices
☐ Receipts
☐ Mileage
☐ Payment platforms
☐ Bookkeeping records

FINAL CHECK

☐ Other income
☐ Personal details
☐ Business details
☐ Tax calculation
☐ Payment deadline
☐ Payments on account
☐ Save a copy

And Finally...

Your Self Assessment doesn't have to become an annual panic-inducing event.

The easiest way to make next year's return less painful is to start keeping good records now.

Set aside a little time each month to reconcile your income, record your expenses and file your receipts. Future you will be very grateful.

And remember: tax is personal to your circumstances.

If you're unsure whether an expense is allowable, how to treat equipment, how to deal with mixed business and personal costs, or what you need to declare, don't guess.

The goal isn't simply to get your tax return submitted.

It's to understand your numbers, keep accurate records and run your creative business with confidence.

If you need help with your return, don’t feel confident in submitting it or don’t have time, get in touch today to see how we can help.