OnlyFans Tax IDNumber UK

OnlyFans asks for a tax ID number when you set up your account. For UK creators, that's a confusing question. There's no single "OnlyFans tax ID number" in the UK. You're dealing with two separate identifiers, used in two different places.

This guide explains exactly what OnlyFans wants, what HMRC requires from you, and how to handle your UK tax obligations as a creator: Self Assessment registration, how to get your UTR, what you can claim as expenses, and what happens if you don't declare your income.

What Tax ID Number Does OnlyFans Ask For?

When you set up your OnlyFans account, the platform asks you to complete a tax form. For UK creators, this is linked to their US reporting requirements. OnlyFans is a US-registered company and needs to identify whether you're a UK or US taxpayer.

The tax ID they ask for on this form is your National Insurance (NI) number. This is the UK's standard individual tax identifier, in the format XX 99 99 99 X (two letters, six numbers, one letter).

Where to Find Your NI Number

Your NI number appears on:

• Your payslip or P60 from any PAYE employment
• Letters from HMRC about tax, National Insurance, or Self Assessment
• Your online HMRC personal tax account at gov.uk
• Your National Insurance card (if you still have the old paper version)

If you've never worked in the UK and don't have an NI number, you'll need to apply for one through the DWP before completing OnlyFans' tax form. Applications are made online at gov.uk.

What Is a UTR Number and Do You Need One?

A UTR (Unique Taxpayer Reference) is a 10-digit number HMRC issues when you register for Self Assessment. It looks like this: 1234567890.

You do not enter your UTR on OnlyFans' platform form. But you absolutely need it to:

• File your annual Self Assessment tax return with HMRC
• Correspond with HMRC about your income tax
• Pay your tax bill correctly
• Work with an accountant on your tax affairs

If your OnlyFans income exceeds £1,000 in any tax year, you are legally required to register for Self Assessment and get a UTR. There's no opt-out.

How to Get a UTR from HMRC

The process is entirely online:

1. Go to gov.uk/register-for-self-assessment and log in or create a Government Gateway account
2. Select your reason for registering: choose "self-employed" or "I have other income to declare"
3. Enter your NI number, date of birth, address, and basic details about your income
4. Submit the form
5. HMRC sends your UTR by post within 10 to 14 working days

Your HMRC Self Assessment Obligations

Your NI number and UTR sort out the admin. Now for the substance: what do you actually owe HMRC?

OnlyFans income is treated as self-employment income for UK tax purposes. You're running a business, even if it doesn't feel like one. That means:

• You pay Income Tax on your profits above the personal allowance (£12,570 in 2026/27)
• You pay Class 4 National Insurance at 6% on profits between £12,570 and £50,270, and 2% above that
• You pay Class 2 National Insurance of £3.45 per week if your profits exceed £12,570
• You file a Self Assessment return every year by 31 January

The £1,000 Trading Allowance

The first £1,000 of gross income from self-employment is completely tax-free under the trading allowance. If your total OnlyFans earnings are under £1,000 in a tax year, you don't owe any tax and don't need to file a return.

Above £1,000, you have two choices:

• Claim the £1,000 allowance and pay tax on everything above it (simplest option)
• Deduct actual expenses instead, which saves more once your income grows

For most creators earning under £5,000, the trading allowance is the easier option. Once you're earning consistently, switching to actual expenses becomes more tax-efficient.

Key Dates to Know

Miss these and HMRC issues automatic penalties:

• 5 April: end of each tax year
• 5 October: deadline to register for Self Assessment (for the tax year just ended)
• 31 October: deadline to file a paper tax return
• 31 January: deadline to file your online return and pay your tax bill
• 31 July: deadline to pay your second payment on account (if applicable)

Expenses You Can Claim

This is where accountancy saves you real money. You don't pay tax on your gross earnings. You pay tax on your profit (income minus allowable expenses). Claiming every legitimate expense reduces your taxable profit and therefore your bill.

What You Can Claim

HMRC allows expenses that are "wholly and exclusively" for business purposes:

• OnlyFans platform fee (20%): deductible in full, every month
• Camera equipment and lighting: as a capital allowance or expensed in full if under £1,000
• Editing software: Adobe subscriptions, video editing tools, graphic design apps
• A computer, tablet or phone used primarily for content creation (proportion if mixed use)
• Broadband: a reasonable proportion if used for your content business
• Props and accessories used exclusively for content (not personal-use clothing)
• Marketing costs: promoting your account on other platforms
• Accountancy fees: yes, your accountant's fee is itself tax deductible

What You Cannot Claim

HMRC will reject expenses that have a personal element or aren't genuinely for the business:

• Everyday clothing and gym memberships (even if you film yourself)
• Food and drink (unless at a genuine business meeting)
• Personal phone contracts where business use is minimal
• Your home's entire broadband or mortgage costs
• Anything you'd have bought anyway regardless of OnlyFans

HMRC Already Knows About Your OnlyFans Income

This is not a grey area. Since January 2024, OnlyFans is legally required to report UK creator earnings directly to HMRC under DAC7 regulations (the EU-derived rules on digital platform reporting that the UK kept post-Brexit).

If you receive more than £1,000 or complete more than 30 transactions in a calendar year, OnlyFans files your name, address, NI number, and total earnings with HMRC. The first batch of reports landed with HMRC in January 2025.

HMRC cross-references this data against Self Assessment returns. If you haven't declared income that OnlyFans has reported, HMRC will write to you. That letter will not be pleasant.

What Happens If You Don't Declare

Failure to declare self-employment income carries serious penalties:

• Late registration: penalties up to 100% of unpaid tax
• Late filing: £100 automatic penalty, rising to £1,600+ if more than 12 months late
• Deliberate non-disclosure: penalties up to 200% of tax owed, plus interest

If you have undeclared income from previous years, voluntary disclosure to HMRC before they contact you significantly reduces penalties. An accountant can help you make a disclosure under HMRC's Contractual Disclosure Facility.

Should You Set Up a Limited Company?

Most OnlyFans creators operate as sole traders: simple, low admin, and fine at most income levels. There is a point where a limited company saves meaningful tax, though.

As a sole trader earning £50,000 profit, you'd pay approximately:

• Income Tax: ~£7,486
• Class 4 NI: ~£2,253
• Total: ~£9,739

Through a limited company taking an optimal salary of £12,570 plus dividends, the equivalent tax burden drops to approximately £6,200, saving roughly £3,500 per year.

The crossover point is roughly £35,000 to £40,000 in profit. Below that, sole trader administration is simpler and the tax saving doesn't justify the extra cost of running a company. Above it, a limited company starts to pay for itself.

See our full guide to OnlyFans tax UK for a detailed breakdown of the sole trader versus limited company comparison.

Record Keeping: What You Need

HMRC requires you to keep records for 5 years after the 31 January filing deadline for that tax year. For OnlyFans income, keep:

• Monthly earnings statements from OnlyFans (downloadable from your account)
• Receipts for all claimed expenses (digital copies are fine)
• Bank statements showing income and expenditure
• Records of any tips or other platform payments

A spreadsheet works for most creators starting out. As income grows, accounting software like Xero or QuickBooks makes the process faster and significantly reduces errors at filing time.