Overdue Invoice Follow-Up: Getting Paid and Keeping the Client
A polite, scheduled overdue invoice follow-up gets you paid faster than ad hoc chasing. It also protects the relationship, because the client knows what to expect at every step. Most small B2B firms are fine at sending invoices on time. Chasing them? Different story. It runs on mood and memory, and the fear of sounding pushy pushes every reminder back another day (or another week). This guide covers four things: clear terms agreed up front, a staged reminder sequence, wording for each step and the legal options you have under EU rules.
Table of Contents
Set B2B payment terms that make follow-up easy
Late payments get a lot easier to handle when the due date, the payment method and the consequences of paying late were agreed in writing before any work started. Put them in the contract. Then repeat them on every invoice. That way a reminder isn’t a new demand at all - it just points back to something the client already signed.
- An exact due date written as a calendar date, not only a relative term
- Bank details and any accepted payment methods
- The client’s PO number or the name of the contact person
- A short note that late payments incur interest and recovery costs
And ask who approves and pays invoices on the client’s side. Plenty of delays come down to an invoice sitting with someone who can’t release the money. One question at kickoff fixes that.
What does an overdue invoice follow-up sequence look like?
An overdue invoice follow-up sequence is a fixed series of reminders that moves from a friendly nudge to a firm notice, with each step on a set day and through a set channel. Nothing fancy. A typical one goes like this:
- A courtesy note a few days before the due date.
- A friendly reminder right after the date is missed.
- A second reminder with the invoice attached and a direct question about what’s blocking payment.
- A phone call to the person who approves payments.
- A formal notice that mentions interest and recovery costs.
- A final decision: a payment plan, pausing work or passing the debt to collection.
The intervals are up to you. What matters is that you state them once in your terms and apply them to every client. Nobody feels singled out, and nobody on your team has to agonize over whether chasing now is “too soon.”
How to word a late payment reminder without hurting the relationship
A good late payment reminder assumes an oversight, sticks to the facts and makes paying easy. Every message should carry the invoice number, the amount, the original due date, a payment link or bank details and a named person to contact with questions. That’s the checklist.
The tone shifts as the sequence goes on. Early messages are short and neutral. Later ones get specific, and firmer. Sarcasm? Never. Same goes for copying in the client’s boss during the first rounds - it rarely helps and it burns goodwill fast. Just ask why the payment is late. If the client has a cash-flow problem, a partial payment or a short plan will usually get you further than pressure ever will. And where you can, keep the money conversation separate from project work, so your account managers keep a clean working relationship with the client.
Late payment interest in the EU: what you can claim
If you fulfilled your obligations and the delay is the client’s fault, EU rules give you the right to charge interest and to claim compensation for recovery costs. According to the EU guidance on late payment, when the contract sets no payment period, interest becomes payable automatically 30 calendar days after the client receives your invoice. Don’t know when it was received? Then the 30 days run from delivery. An invoice sent before delivery only starts the countdown once you deliver. On top of interest, you can claim a flat compensation fee of EUR 40 for each invoice paid late, and some countries set a higher amount based on the invoice value.
Mention this right in your formal notice. Whether you actually charge it is a case-by-case call. With a valuable long-term client, the right to claim often works better as leverage than as an extra bill (in my view, that’s where it earns its keep).
Keep accounts receivable follow-up on a schedule, not on memory
An accounts receivable follow-up routine only works if someone owns it and every due date creates a task automatically. Memory is how a reminder slips by a week. Then a month.
- A weekly review of open receivables
- One owner for each overdue invoice
- A log of every contact and each promise-to-pay date
- Tags that flag clients who pay late again and again
In EpicCRM, invoicing runs through the Fakturownia integration, described with invoicing and other integrations, and you send each reminder yourself, with tasks and email, in-app or Slack reminders marking every step of your sequence. Payment history also sits next to emails and deals in the full customer record, so you can tell whether a delay is a one-off or a pattern.
Is your team still digging through inboxes to find out what was billed? Then it’s worth keeping invoices and payments in CRM alongside the rest of each client’s history.
When to escalate, pause work or let the client go
Escalate when a client breaks a payment promise twice or goes quiet on you. Not when the first reminder goes unanswered. Work through the options in order:
- A written payment plan with dates
- Pausing further deliveries
- A formal demand for payment
- A collection agency or court procedure
Then do the math. What is this client worth, and what does chasing them cost you in time and money? One bad payer can eat more than the margin they bring in. Sometimes letting them go is simply the cheaper option.
A good overdue invoice follow-up doesn’t depend on confrontation. Written terms, a fixed sequence and a calm tone turn chasing into routine, so you get paid without having to choose between cash flow and the client.
FAQ
How soon after the due date should I send a payment reminder?
The day after. Keep it short and neutral, since it’s most likely an oversight. From there, the rest of your sequence takes over on the days you set.
Can I charge interest on a late B2B invoice in the EU?
Yes, if you fulfilled the contract and the delay is the client’s fault. EU rules give you the right to interest and to compensation for recovery costs, as covered in the section on late payment interest above. Mention that right in your formal notice, even if you end up waiving it.
How do I chase an unpaid invoice without losing the client?
Assume good faith and spell out exactly what’s owed. Ask what’s blocking the payment, and offer a short plan if cash is tight. Use the same tone and schedule for every client, so a reminder reads as your standard process rather than a personal complaint.
