The phone rings. It's your favourite client. They love your work, they've referred you twice, and they owe you £3,200 that was due three weeks ago.
Do you mention it?
Most freelancers and small business owners would rather chew glass than have this conversation. But here's the thing: chasing an invoice doesn't have to damage a relationship. Done well, it can actually strengthen one.
The golden rule: assume the best
The single most effective mindset shift you can make is this: assume every late payment is an oversight. Because most of them are.
Your client isn't sitting in their office, fingers steepled, plotting to withhold your money. They're buried in their own work, their accounts person is on holiday, or the invoice slipped to page two of their inbox.
Starting from a place of goodwill changes everything about how you communicate.
The three-day rule
Don't wait. The moment an invoice becomes overdue, the clock starts ticking — not just on your cash flow, but on the probability of getting paid at all.
Day three is the sweet spot for a first nudge. It's soon enough that neither of you has forgotten the work, but late enough that you're not being unreasonable.
Something like: "Hi Sarah, hope you're well. Just a quick one — invoice #4821 for £3,200 was due on the 10th and I can't see it in my account yet. I know these things slip through the cracks. Would you mind checking with your accounts team?"
That's it. No drama. No passive aggression. No "as per my previous email." Just a human being checking in with another human being.
Escalation is not confrontation
The mistake most people make is treating escalation as a switch — you're either friendly or you're threatening legal action, with nothing in between.
In reality, good credit control is a ladder. Each step is slightly firmer than the last, but never aggressive. The tone moves from casual to concerned to formal, matching the seriousness of the situation.
At two weeks overdue, you're a bit more direct: "I wanted to follow up on this as it's now a couple of weeks past due. Could you let me know when I can expect payment?"
At a month, you're firm but still professional: "This invoice is now significantly overdue and I'd appreciate your urgent attention. Please let me know the expected payment date."
At six weeks, you're talking about next steps. But even here, you're stating facts, not making threats.
The VIP exception
Not every client should be chased the same way. Your biggest client, the one who represents 30% of your revenue, deserves a different approach than the one-off project client who's gone quiet.
For VIP clients, the tone stays gentler for longer. You might pick up the phone instead of sending an email. You might frame it as a concern rather than a chase: "I noticed this one's been outstanding for a while — is everything okay on your end?"
The key is having a system that lets you treat different clients differently, automatically.
What to do when they push back
Sometimes a client will dispute an invoice, ask for more time, or simply go silent. Each requires a different response.
For disputes: stop chasing immediately. You can't chase a disputed invoice — you need to resolve the dispute first. Acknowledge their concern, investigate, and respond promptly.
For extension requests: be flexible where you can, but get a specific date. "I understand things are tight — when would work for you?" is better than either caving completely or refusing to negotiate.
For silence: don't take it personally, but do escalate. If someone won't respond to emails, try a different channel. A phone call, a LinkedIn message, even a letter. The goal isn't to harass — it's to make contact.
The secret: consistency beats intensity
The businesses that get paid reliably aren't the ones who send the scariest emails. They're the ones who follow up every time, on time, without fail.
A polite email at three days, a firmer one at ten, a concerned follow-up at twenty-one. Every invoice, every time. No exceptions, no forgetting, no "I'll do it tomorrow."
That's the real challenge for small businesses. Not the writing of the email — the remembering to send it, every single time, for every single invoice.
Which is exactly why credit control tools exist. But that's a topic for another day.