Client Still Hasn't Paid? Here's Exactly What to Say and When

Most invoices missed on their due date are not deliberate — they are a buried email, a delayed approval, or a payment run that happens bi-weekly instead of on demand. Your first follow-up should reflect this assumption. It keeps the relationship intact while starting the clock on your documentation. UK businesses can also charge statutory interest on overdue commercial invoices under the Late Payment of Commercial Debts Act 1998.

In practice: Do not apologise for chasing. "Sorry to bother you but..." trains clients that late payment is socially acceptable. Instead, use a neutral, professional tone that treats this as a normal business exchange — because it is. Keep it short (3–4 sentences) and include the invoice as an attachment so the client can act immediately.

Use the free email generator to create this message in seconds with your specific invoice details filled in automatically.

If the first reminder went unanswered, you are now dealing with something that needs a direct response — not another gentle nudge. Your tone should shift from "friendly reminder" to "I need a specific update." The goal is a payment date or a reason — not another open-ended chase loop.

What actually works: Ask a specific, binary question. "Could you let me know when payment will be processed, or if there is something blocking it?" gives the client a clear choice. Vague messages like "just checking in again" are easy to ignore. A specific question demands a specific answer.

At this stage, consider using the follow-up schedule planner to map out exactly when your next reminders should go out.

Two weeks of silence after two follow-ups is no longer a timing issue — it is a pattern. Your tone shifts to firm, and for good reason. You need to communicate that this has consequences, not just inconvenience.

At this stage, mention your late fee clause (if you have one) as a factual statement, not a threat. State a specific payment deadline — 5 days from today, not "as soon as possible." Reference the fact that you have sent previous reminders without a response. This is not aggression; it is documentation that you gave the client multiple fair opportunities.

A 30-day overdue invoice with zero meaningful response is a refusal in practice, even if not in words. Your final notice must do one thing: state a specific consequence that you are genuinely prepared to follow through on. "I may take further action" is not a final notice — it is another delay.

The most effective final notices are short, not long. Four to six sentences: invoice number, days overdue, deadline date, and the specific action you will take on that date (small claims court filing, debt collection referral, or solicitor). Calm, factual, and unambiguous. The brevity itself signals that you are done negotiating — you are notifying.

After 45 days of no payment and no meaningful contact, continuing to send emails signals to the client that there are no real consequences. Here is what to do instead:

• Phone call or video call — sometimes a direct conversation breaks through where emails do not. Keep it professional, not confrontational.
• Collections agency — for amounts that justify the fee (typically 25–40% commission). Only pursue if other methods have failed and you have clear documentation.
• Small claims court — for amounts under your local small claims limit (often $5,000–$15,000). A formal notice of intent to sue often triggers payment before you even file.
• Lawyer's letter — a formal letter from a solicitor or attorney is often enough to resolve the matter without going to court.

Throughout this entire process, the most important thing is to document every follow-up. Use a tool with a chase history feature so you have a clear, timestamped record of every email sent, every call made, and every response received. This is essential if the matter escalates to legal proceedings.

InvoiceGrid logs every follow-up action per invoice, so your entire chase history is always available in one place.