Why this works
- Assume good faith. At one day late, almost nobody is refusing to pay.
- Always give the "if you have already paid" exit. It keeps the tone friendly and flags payments you might have missed.
- Send it the day after — not a week later. The longer you wait, the lower it falls on their list.
Useful tools for this stage
- Late payment interest calculator — the exact interest and compensation to quote.
- WhatsApp & SMS reminder generator — for clients who ignore email.
- Letter before action generator — when reminders have run out.