What to say when chasing an overdue payment
Follow up on an unpaid invoice firmly and professionally without damaging the relationship. Fill in your details below, copy the prompt, and paste it into ChatGPT, Claude, or Gemini.
Chasing late invoices is uncomfortable for many small business owners and freelancers, who worry about seeming pushy or damaging the relationship. But being paid on time is a reasonable expectation, not an imposition. The discomfort of asking often costs far more than the conversation itself.
The most effective late payment messages are direct, reference the specific invoice and amount, give a clear deadline for payment, and escalate gradually if needed. The first follow-up should be warm and assume good intent. Subsequent ones can be progressively firmer. The goal is payment, not a fight.
Fill in the invoice details, how late the payment is, and your relationship with the client. The prompt below will write a professional overdue payment message.
Fill in your details
Your prompt
You are helping me follow up on an unpaid invoice with a client. Here are my details: My role: [ROLE] Client name: [CLIENT] Invoice amount: [AMOUNT] How many days overdue: [DAYS_OVERDUE] Whether I have already followed up: [PREVIOUS_CONTACT] Write a professional message chasing this payment. The tone should escalate appropriately based on how overdue this is: firm but friendly for a recent overdue, more direct and clear about consequences for significantly overdue. Include the invoice amount, the due date, and a clear call to action. Do not be aggressive but do not be a pushover either.
Copy this prompt and paste it into ChatGPT, Claude, Gemini, or any AI tool.
Tips for this conversation
- 1Set up payment terms in your contract upfront: net 14 or net 30 with late payment fees. It makes these conversations easier.
- 2Always reference the specific invoice number and amount. Ambiguity gives clients an excuse to delay.
- 3Document every follow-up in writing. If it ever goes to small claims court, you need a paper trail.
Common questions
How long should I wait before chasing a late payment?+
Send a friendly reminder the day after the due date, or within three days. The sooner you follow up, the easier it is for both of you to resolve it before it becomes a bigger issue.
What if the client ignores all my follow-ups?+
After two or three unanswered messages, move to a phone call. If that does not work, send a formal notice letter with a deadline and mention of late fees or next steps. For significant amounts, consider small claims court or a debt collection service.
Should I stop work until they pay?+
If you have a clause in your contract that allows you to pause work for non-payment, yes. Communicate it clearly and professionally: "As the invoice is now overdue, I will be pausing work on this project until payment is confirmed." This is a professional boundary, not a threat.
How do I use this prompt?+
Fill in your details using the form above. The placeholders in the prompt update live as you type. When you are ready, click “Copy prompt” and paste it into ChatGPT, Claude, Gemini, or any AI tool. The AI will write a personalised script based on your specific situation.
Which AI tool works best for these conversation scripts?+
Claude and ChatGPT both work well. Claude tends to produce more nuanced, natural-sounding language that is closer to how people actually speak. ChatGPT is strong for structured, direct output. Try both with your details and compare the results.
Should I use the AI output word for word?+
Use it as a strong draft, then edit it to sound like you. The AI gives you the structure and language to work from. Reading it out loud before the actual conversation is one of the best ways to catch anything that does not feel natural for your voice.
Can I adapt the prompt for a written message instead of a conversation?+
Yes. Before copying the prompt, add a line specifying the format you need: “Write this as an email” or “Write this as a short Slack message.” The variants above also cover different tones and formats for many situations.
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Address added requests outside your contract without losing the client.
What to say when ending a client relationship
Let a client go professionally, clearly, and without burning bridges.