How to Handle Non-Payment and Late Invoices
Some clients won't pay. Not because they can't. Because you haven't made it a priority for them to pay.
You finish the project. You send an invoice. Two weeks later you send a gentle reminder.
Three weeks later you follow up again. Six weeks later you're frustrated and considering writing it off.
Meanwhile, the client thinks "oh yeah, I meant to process that" every time they see the email.
The solution is making payment impossible to ignore. You do that by following up fast and being direct.
Prevention: Set Expectations Upfront
In Your Proposal:
"Payment terms: 50% due upon project start, 50% due on delivery. Invoices are due within 15 days of receipt."
In Your Contract:
"Invoices are due within 15 days. Late payments accrue 1.5% monthly interest after 30 days. Continued non-payment may result in halting project work."
On Your Invoice:
"Due date: [specific date]. Payment method: [options]. Contact [email] with questions."
Clear payment terms prevent most problems. Clients who don't know when to pay won't pay on time. Clients who know the deadline often hit it.
The First Follow-Up (Day 3)
Send a friendly check-in three days after they receive the invoice.
Subject: Invoice [number] - Following Up
"Hi [Name],
Just checking in to make sure you received the invoice for the [project]. Let me know if you have any questions or need an adjusted payment schedule.
[Your name]"
You're not demanding. You're just confirming receipt.
Most clients will say "Got it, we'll process it" at this point.
The Second Follow-Up (Day 10)
If payment hasn't posted, send a direct reminder.
Subject: Invoice [number] Due [date]
"Hi [Name],
Just a reminder that invoice [number] is due [date]. If you have any issues processing it or need an invoice copy, let me know.
[Your name]"
You're still friendly. You're just naming the deadline.
The Third Follow-Up (Day 18)
This is where you get more direct.
Subject: Invoice [number] Now Overdue
"Hi [Name],
Invoice [number] was due on [date]. I haven't received payment yet. Can you confirm you're processing it?
If there's an issue, let me know. Otherwise I'll expect payment by [new date].
[Your name]"
You're shifting tone. You're naming that it's overdue.
The Fourth Follow-Up (Day 28)
This is where you escalate.
Subject: Invoice [number] - Payment Required
"Hi [Name],
Invoice [number] is now 28 days overdue. Per our contract, late payments accrue 1.5% monthly interest.
I need payment by [deadline]. If payment can't happen by then, we need to discuss a payment plan.
Please confirm receipt of this email.
[Your name]"
You're invoking the contract. You're setting a hard deadline.
If They Still Don't Pay (Day 35)
Make a phone call. Not email. A real conversation.
"Hey [Name]. I'm calling about the outstanding invoice.
We're now over a month overdue and I haven't heard anything. What's going on?"
There might be a real issue. Their accounting is backed up.
They're disputing something. They genuinely forgot.
Most times, once you call, they process it within days.
If they don't have a good explanation: "I need this paid by [date]. What's stopping you?"
Make them name the obstacle. Then problem-solve: "Is budget the issue?
Can we do a payment plan? Is there a dispute about the invoice?"
You're not angry. You're just solving for payment.
Handling Common Excuses
"We're Processing It"
"Great. When should I expect it? I want to mark it paid on my end."
Get a specific date. Follow up on that date if it doesn't arrive.
"Our Accounting Is Backed Up"
"I understand. Who should I follow up with to make sure this gets prioritized?"
You're escalating to someone whose job is to pay.
"We Need An Updated Invoice"
Send it immediately. Don't hesitate.
Then follow up the next day: "Sent the updated invoice. When can I expect payment?"
"Can We Do A Payment Plan?"
Depends on how much and how long they're overdue. If they're 35 days late and now asking for a plan, your use is here.
"We can do a payment plan. 50% by [date], 50% by [date].
But the original invoice is late. We're still applying the 1.5% monthly interest to the overdue amount."
You're being flexible on timing but protecting yourself on penalties.
"There's A Dispute About The Invoice"
"What's the dispute? Let's talk through it."
Listen. If it's legitimate, adjust the invoice. If it's not, explain why the invoice is correct.
But don't accept "we have a dispute" as an excuse not to pay something reasonable.
When To Consider Writing It Off
If an invoice is 90+ days overdue and the client is ghosting, you're not getting paid.
Before you write it off:
- You've followed up at least five times
- You've called them
- They've either gone silent or explicitly said they can't pay
- You've attempted a payment plan
At that point, it's not your debt to collect anymore. It's a lesson learned about client vetting.
Still consider small claims court if it's a significant amount ($5,000+) and you have evidence of the work.
Protecting Yourself Going Forward
With New Clients:
- Require 50% deposit upfront
- Don't start work until the deposit clears
- Bill immediately upon delivery, not 30 days later
- Follow up on invoices aggressively
This cuts late payment problems by 90%.
For Risky Clients:
If a client has been late before or feels financially shaky:
- Require 100% payment upfront
- Require payment in advance of each project phase
- Use payment processors that move money immediately (not checks)
You're protecting your cash flow.
For Ongoing Retainers:
"Monthly retainer is due on the 1st of each month. If payment doesn't post by the 5th, I'll pause work until payment clears."
You're giving them grace. You're also being clear about the consequence.
The Conversation When Payment Is Really Delayed
If you've reached week six and they're still not paying, have a real conversation.
"I've followed up five times on this invoice. Either there's something you haven't told me, or this isn't a priority for you. I need to understand which one it is so I can decide if we should keep working together.
Is there a real issue, or am I just not a priority?"
Most clients will admit one or the other.
If it's a real issue (cash flow, dispute, technical problem), solve it together. If you're just not a priority, you have a client relationship problem that's bigger than payment.
FAQ
Q: Should I keep working while they owe you money?
No. Pause work. "I'll resume work once the previous invoice is paid." This creates immediate incentive.
Q: What about small claims court?
Worth it for amounts over $5,000. Below that, the time and stress usually aren't worth it.
Q: How do I handle a payment dispute?
Listen to their concern. Either it's valid and you adjust the invoice, or it's not and you explain.
Don't accept "we're disputing it" as a reason not to pay something reasonable. "Pay the non-disputed portion now, and we'll resolve the disputed part."
Q: Should I discount the invoice if they're paying late?
No. That rewards late payment. If anything, charge the interest fee you outlined in your contract.
Q: What's the ideal payment terms for an agency?
50% upon signature, 50% upon delivery. Or monthly retainers due on the 1st. Net 15 is generous.
Net 30 is common. Net 45+ is too long for cash flow.