Payment reminders: chase unpaid invoices without losing clients

You delivered. You invoiced. Now you're waiting.

An unpaid invoice isn't just a cash flow problem. It's an open file in your head that drains energy every time the month draws to a close. The good news is that getting paid what you're owed doesn't have to cost you a client relationship. It's about knowing what to say, when to say it, and how to say it.

1. Don't ask for money: offer a service

The natural instinct is to follow up with a direct demand. That's usually the wrong move.

Assume your client is acting in good faith. A late payment is rarely intentional. A misplaced invoice, a change of bookkeeper, a calendar slip. Frame your first contact as a check-in ("just making sure everything arrived") rather than a complaint. Your client reads it as a courtesy, not pressure, and pays faster.

The most effective follow-up is the one your client doesn't experience as a follow-up.

2. Your three-step timeline, without losing a single day

Every day without a follow-up is another day of waiting. Here's the sequence that works.

Step 1: The check-in email (7 days after the due date)

The goal is to rule out any doubt that the invoice was received: "Hi, just wanted to make sure you received my invoice and everything's clear on your end. I've attached it again in case you need it."

Always attach the original QR-invoice. A client who scans a code pays faster than one asked to enter an IBAN by hand.

Step 2: The formal reminder (14 days after the first message)

Here the goal shifts: you want a firm payment date, not a vague promise. "Unless we're mistaken, your balance is still outstanding. Could you confirm the transfer will go out by Friday?"

Be specific about the date. "As soon as possible" isn't a date, it's an exit.

Step 3: The formal notice of default (last resort)

This document formally signals the end of the amicable phase. It must explicitly state Formal Notice of Default, set a deadline of 5 to 7 days, and mention the applicable default interest (5% under the Swiss Code of Obligations). After that, debt enforcement proceedings can begin.

3. Three ground rules for Switzerland

The outcome has to be firm, the form has to be spotless. Here's how to pull that off in practice.

1. Be specific, not vague. Always reference the invoice number and the service in question. If your client has to go dig up which invoice you mean, they'll do it tomorrow, not today.
2. Switch to registered mail if the silence continues. For the formal notice of default, registered mail is the only proof that holds up legally in debt enforcement proceedings. An email isn't enough.
3. A two-minute call beats ten emails. A phone call surfaces the disputes clients won't put in writing: a contested service, a delivery issue, a change of contact person. Finding the real blocker is often enough to solve it.

4. Automate it and stop thinking about it

Waiting until the end of the month to check your receivables means chasing problems you could have spotted two weeks earlier.

With Factura, every invoice comes with a Swiss-compliant QR section: your client scans, pays, no IBAN to type. Factura also gives you a real-time view of your outstanding invoices, so you see instantly what's overdue and for how long, and act at the right moment.