In short: Pet sitting income in the UK is self-employment income. You can earn up to £1,000 a year tax-free under the Trading Allowance, but above that you must register with HMRC, file a Self Assessment return each year by 31 January, and pay tax and National Insurance on your profit. The good news is that legitimate costs reduce what you owe, and the admin is lighter than most people expect.
Tax is one of the quiet reasons people hesitate to start pet sitting. It sounds complicated and easy to get wrong. In practice the rules for an individual sitter are straightforward once you know the thresholds and dates. This guide walks through them in plain terms. It is general information, not personal tax advice, and HMRC's own guidance is always the current source of truth on rates and thresholds.
You are self-employed
When you take pet sitting bookings and set your own rates, you are working for yourself, not as an employee. On Petme, as on other marketplaces, sitters are independent contractors: you decide your hours, your services and your prices, and you are responsible for your own tax. No tax is deducted for you at source, so it falls to you to declare your earnings.
The £1,000 Trading Allowance
HMRC gives every individual a Trading Allowance of £1,000 of gross self-employment income per tax year, tax-free. If your total pet sitting income for the year is £1,000 or less, you generally do not need to register or report it.
Once you go over £1,000 gross in a tax year, the picture changes: you must register as self-employed and report your income through Self Assessment. Note that the £1,000 is measured on income, not profit, so it is your total takings before expenses that count toward the threshold.
Registering with HMRC
Registration is free and takes around twenty minutes online at GOV.UK. You will receive a Unique Taxpayer Reference (UTR), which you use to file. The deadline to register is 5 October following the end of the tax year in which your income passed £1,000. Leaving it later can mean penalties, so it is worth doing as soon as you know you have crossed the line.
Self Assessment: the key dates
The UK tax year runs from 6 April to 5 April. After it ends you complete a Self Assessment return covering that year's income and expenses.
| Date | What it is |
|---|
| 6 April to 5 April | The tax year your return covers |
| 5 October | Deadline to register as self-employed after crossing £1,000 |
| 31 January | Deadline to file online and pay any tax owed |
Missing the 31 January deadline triggers an automatic penalty and interest on unpaid tax, so set a reminder and file in good time rather than at the last minute.
What you can deduct
You pay tax on your profit, not your turnover, so legitimate business costs reduce your bill. Common deductible expenses for pet sitters include:
- Insurance, including public liability and Care, Custody and Control cover.
- Professional memberships relevant to your work.
- DBS check fees where you obtain one for your business.
- Equipment used for clients: leads, poo bags, treats, first aid kits, bedding.
- Travel to and from clients, using the approved mileage method or actual costs.
- A fair portion of your phone bill used for bookings and client contact.
Keep receipts and a simple record of income and costs from the very first booking. A spreadsheet is enough for most sitters. If you claim the £1,000 Trading Allowance instead of expenses, you cannot also deduct costs, so once your expenses exceed £1,000 it usually pays to claim actual costs.
Income tax and National Insurance
Whether you actually owe income tax depends on your total income from all sources against your personal allowance, which is £12,570 for 2025/26. If your combined income stays below it, you will owe no income tax, though you still need to file if you crossed the £1,000 reporting threshold.
On National Insurance, self-employed sitters may owe Class 4 contributions on profits above the relevant threshold, and Class 2 can matter for your state pension and benefit record. The rates and thresholds change from year to year, so check HMRC's current figures when you file rather than relying on an old number.
VAT: you can almost certainly ignore it
VAT only applies once your taxable turnover exceeds the registration threshold, £90,000 for 2024/25. Individual pet sitters earn nowhere near this, so VAT is not something you need to worry about unless you scale into a substantial multi-sitter business.
Get set up, then start sitting
The tax side of pet sitting comes down to a short checklist: track your income and costs, register with HMRC if you pass £1,000, file your Self Assessment by 31 January, and keep your receipts. None of it needs to be done before your first booking, only before the deadlines that follow the tax year.
Once your admin is in order, you can
become a pet sitter in the UK with Petme and keep up to 90% of what you earn, or browse everything
Petme offers across the UK. For the wider setup, see our guides to
how much pet sitters earn in the UK, the
home boarding licence, and
how to become a pet sitter in the UK.
Frequently asked questions
Do I have to pay tax on pet sitting income in the UK?
Yes, if you earn more than £1,000 from pet sitting in a tax year. The first £1,000 is covered by the Trading Allowance and is tax-free. Above that you must register as self-employed with HMRC and file a Self Assessment return. Whether you actually owe income tax depends on your total income against the personal allowance.
When do I need to register as self-employed for pet sitting?
You must register with HMRC once your pet sitting income passes £1,000 in a tax year. The deadline to register is 5 October following the end of the tax year in which you crossed the threshold. Registration is free and takes around twenty minutes on the HMRC website.
What can pet sitters claim as expenses in the UK?
You can deduct legitimate business costs from your taxable income: insurance premiums, professional memberships, DBS check fees, equipment such as leads, treats and first aid kits used for clients, travel to and from clients, and a fair portion of your phone bill used for the business. Keep records and receipts from the start.
What is the Self Assessment deadline for pet sitters?
The tax year runs from 6 April to 5 April. Online Self Assessment returns and any tax owed are due by 31 January following the end of that tax year. Filing late or paying late triggers automatic penalties and interest, so register and diarise the date well ahead.
Do pet sitters pay National Insurance?
Self-employed pet sitters may owe Class 4 National Insurance on profits above the relevant threshold, and Class 2 can be relevant for building your benefit and state pension record. Rates and thresholds change each year, so check HMRC's current guidance when you file.
Do I need to register for VAT as a pet sitter?
Almost certainly not. You only need to register for VAT if your taxable turnover exceeds the registration threshold, which is £90,000 for 2024/25. The vast majority of individual pet sitters earn far below that and never need to think about VAT.
