What to do when a client ignores an invoice.

First, rule out a process problem

Confirm that the invoice reached the correct accounts contact and includes the required purchase-order number, business details and payment instructions. Ask whether the invoice is approved and where it sits in the payment process.

Send a dated follow-up

Refer to the invoice number, amount, due date and your previous reminder. Ask for either a confirmed payment date or the full details of any dispute. Give a reasonable date for response rather than leaving the request open-ended.

Keep the evidence together

• The contract, order or written agreement
• The invoice and proof it was sent
• Delivery or completion evidence
• Every reminder and response
• Notes of calls and promised payment dates
• Your interest and compensation calculation, if relevant

Use a simple escalation timeline

1. Today: send a clear reminder with the invoice attached.
2. After 3 days: request a specific payment date or dispute details.
3. After 7 days: send a final administrative notice and preserve the complete record.
4. After 14 days: assess a payment plan, mediation, professional recovery support or formal action.

Consider a payment plan carefully

If the client acknowledges the debt but cannot pay immediately, a short written payment plan may recover more quickly than silence. Record the instalment amounts, dates and what happens if a payment is missed. Do not accept an arrangement you cannot monitor.

Before formal action

A letter before action and court claim have legal and cost consequences. Check the correct process for the debtor and jurisdiction, confirm the identity and address of the party you contracted with, and consider professional advice. ChaseKit can organise the correspondence and figures, but it does not decide whether proceedings should begin.