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Invoice Chaser Letter Template
How to formally chase an unpaid invoice before legal action — what to include, your legal rights, and a free letter generator.
← All Letter Templates · Self Employed · Last updated 18 August 2026
This is free rights guidance, not legal advice. For advice specific to your situation, see our About page or contact Citizens Advice.
If you need to formally chase an unpaid invoice before legal action, a written letter is the recommended first step — it creates a clear record and shows you're pursuing the matter formally. Below is what a strong invoice chaser letter should include, plus a free tool to generate yours.
What this letter needs to cover
- Reference the specific invoice number and amount
- Note the original due date
- State it remains unpaid
- Give a deadline for payment (7 days)
- State that failure to pay may result in legal action under the Late Payment of Commercial Debts Act
- Remain professional
See our full letter template library for related templates, or use our free checkers for guidance specific to your situation.
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