Late invoices are rarely about bad clients. Most of the time the invoice is sitting in someone's inbox, waiting for an approval nobody asked for. A clear, polite, scheduled follow-up fixes most of it. Here's the sequence I use.
Before you send the invoice
- Put the due date and payment method in the email body, not just the PDF.
- Name the person who approves payment. If you don't know, ask: "Who should I copy so this gets to accounts payable?"
- Use a specific subject line:
Invoice #1042 – March design work – due Apr 15.
Step 1: Friendly reminder (3 days before due)
Hi Sam, quick heads-up that invoice #1042 ($1,200) is due on Friday. The pay link is here: [link]. Thanks again for a great project!
Step 2: Due-date nudge (1 day after due)
Hi Sam, invoice #1042 was due yesterday. Could you confirm it's in the payment queue? Happy to resend anything AP needs.
Step 3: Firm follow-up (7 days late)
Hi Sam, following up on invoice #1042, now a week past due. Can you share the expected payment date? Per our agreement, new work is paused until outstanding invoices are settled.
Step 4: Final notice (14+ days late)
Hi Sam, invoice #1042 is now 14 days overdue. Please arrange payment by [date]. After that, a late fee of [X]% applies as outlined in our contract. Let me know if there's an issue I can help resolve.
Tips that make it work
- Put it on a calendar the day you invoice. Sequences only work if they're automatic.
- Always ask a question. "Can you confirm a date?" gets replies. "Just checking in" doesn't.
- Keep the tone flat and factual. No apologies, no guilt.
- Have the late-fee clause in your contract up front. Step 4 is only credible if it's already agreed.
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