by Asim Abbas
11 November 2026 
Freelancer finances: invoices, late payments and tax
Freelancer finances: invoices, late payments and tax
Freelancing gives you freedom, but it also means chasing invoices, managing irregular income and paying your own tax.
- Invoices need clear details and payment terms
- You can claim statutory interest on late B2B payments
- Fixed compensation of £40 to £100 per invoice
- Set aside tax and NI as you’re paid
A good invoicing process and knowing your rights on late payment can make a big difference to cash flow.
This guide covers what an invoice must include, how to handle late payers and how freelancers should plan for tax.
What an invoice should include
- Your name or business name and contact details
- The client’s name and address
- A unique invoice number and date
- A description of the work and dates
- Amount due and payment terms
- Bank details
- VAT number and VAT breakdown if registered
Payment terms
Agree terms upfront. If there’s no agreement, the default is 30 days after the invoice or delivery. Shorter terms, deposits and milestone billing reduce risk.
Self Assessment tax calculator
Plan your tax pot.
Late payment rights
Under the Late Payment of Commercial Debts legislation, for business-to-business invoices you can claim:
- Statutory interest: 8% above the Bank of England base rate
- Fixed compensation: £40 for debts under £1,000, £70 for £1,000 to £9,999.99, £100 for £10,000 or more
- Reasonable recovery costs
A designer invoices a company £2,500 on 30-day terms. It pays 60 days late. With the base rate at, say, 3.75%, statutory interest at 11.75% for 60 days is about £48, plus £70 fixed compensation, so she can add £118 to her claim.
Fixed-fee accountancy support
Transparent monthly packages for sole traders, landlords and limited companies. Fixed fees agreed upfront, VAT included.
Get a fixed-fee quoteCall 0161 531 4179Tax for freelancers
- Register for Self Assessment by 5 October after your first tax year
- Tax is on profit, after allowable expenses
- Income Tax plus Class 4 NI at 6% between £12,570 and £50,270
- Payments on account apply once your bill is over £1,000
- Making Tax Digital from £50,000 of income, then £30,000 from April 2027
Managing irregular income
- Keep a buffer of two to three months’ costs
- Move a percentage of every payment to a tax account
- Use invoicing software with reminders
- Consider a Budget Payment Plan with HMRC
When income is taxed
Under the cash basis, now the default for sole traders, income is taxed when you’re paid, not when you invoice. Unpaid invoices at the year end aren’t taxed until received. See our cash basis guide.
See GOV.UK guidance on late commercial payments, our sole trader drawings guide and our Self Assessment service.
What should I do next?
Clear terms.
Interest and compensation.
Every payment.
Frequently Asked Questions
What must a freelance invoice include?
Your details, the client’s details, a unique number, date, description, amount, terms and bank details.
Can I charge interest on late payments?
Yes, on business invoices, at 8% above the Bank of England base rate.
How much compensation can I claim?
£40, £70 or £100 per invoice, depending on the amount.
When is freelance income taxed?
Under the cash basis, when you’re paid.
How much tax should a freelancer save?
Usually 20% to 30% of profit.
Need help with this? Wingate Accountants offers fixed-fee online accountancy support across the UK. Call 0161 531 4179 or request a quote at wingateaccountants.co.uk.
About the Author
Stephen Reynold
I’m Stephen Reynold, an accountant at Wingate Accountants. I work with sole traders and small companies, turning tax rules into clear, practical next steps.
