How to chase an unpaid invoice without losing the client

Every freelancer and small business will deal with late invoices. You don't get to skip the chase. What matters is whether your process is professional enough to recover the money and keep the relationship intact. Here's a four-stage escalation that works for most cases.

Updated 2026-05-13 · FreeInvoice.app editorial

Day 1 over: the friendly reminder

The day after an invoice goes past due, send a friendly reminder. Keep it light and non-accusatory: a brief 'wanted to flag this.'

Hi [name],

Hope you're well. Just a quick reminder that invoice #1284 (dated [date]) is now showing as past due. Total: $[amount]. Would you mind getting it processed when you have a chance?

Let me know if you need a duplicate copy or anything else from my side.

Thanks!

Why this works: most overdue invoices are not malicious. They're sitting in someone's email pile, or stuck in an AP queue, or waiting for an internal approval. A friendly nudge resolves 70-80% of late invoices.

Send the reminder by the channel the customer typically uses — email if your communication is email-based, text or app message if you have a more casual relationship. Don't escalate channels at this stage.

Day 14 over: the second reminder

Two weeks past due, send a more direct message. Still polite, but with a clear request for payment timing.

Hi [name],

Following up on invoice #1284 (dated [date], total $[amount]). It's now 2 weeks past due.

Could you let me know when I can expect payment? If there's an issue with the invoice or a question about the work, happy to talk it through.

If it's helpful, I've attached a duplicate of the invoice. Thanks for taking a look.

What this is doing: forcing the customer to either confirm a payment date or surface an objection. 'I'll have it next week' is information you can plan around. Silence is information you should react to.

Day 30 over: the late-fee notice

At 30 days past due (so 60+ days from invoice date for Net 30 terms), send a formal late-fee notice. This is where tone shifts from friendly to professional-firm.

Hi [name],

I'm writing about invoice #1284 ($[amount]) which is now 30 days past due.

Per the terms on the original invoice, a late fee of 1.5% per month is applied to overdue balances. The current balance with late fee is $[new amount].

To keep things simple, I'd like to resolve this before further escalation. Could you confirm a payment date by [Friday of this week]? Otherwise I'll need to forward this to collections.

Looking forward to hearing from you.

Why this works: most legitimate customers respond at this stage because the next step (collections) damages their credit profile. Customers who don't respond at this stage are either insolvent or were never going to pay; the next step gets you to that answer.

Day 45+ over: the collections decision

If you haven't heard back at 45 days past due with no acknowledgement at all, you have three paths:

Small claims court. For invoices under $5,000-10,000 (varies by state), small-claims court is the cheap legal path. Filing fee is $40-200. You don't need a lawyer. Most customers respond as soon as they receive the filing notice — many pay before the hearing. Effective for genuine refusal-to-pay situations.
Collections agency. Sells your invoice to a third-party collector for 30-50% of face value, or contracts them at 25-50% contingency. Damages the customer relationship permanently. Use only when you've decided the customer relationship is over.
Write it off. Sometimes the right call. If the customer's gone bankrupt or genuinely insolvent, chasing further is wasted time. Write off as bad debt, deduct on taxes, learn the warning sign for future engagements.

Things to do before you ever issue an invoice

Most chase pain is preventable. Before you ever issue a real invoice for a meaningful amount:

Take a deposit. 30-50% on signed engagement converts most of the chase risk into 'finished work but not yet paid for 30%' — much less painful than 'unpaid in full.'
Get the engagement in writing. Email confirmation of scope, fee, and timing. Doesn't need to be a formal contract for small jobs; does need to exist.
Get the right PO number from corporate clients. Without it, AP returns your invoice for paperwork and the 30-day clock restarts.
Get the W-9 on file before the first invoice. Same logic.
State your payment terms on every invoice. 'Net 15. Late payment: 1.5% per month after 15 days.' One line. Sets expectations.

Red flags during the engagement

Some customer behaviour is predictive of payment problems before the invoice goes out. Pay attention to:

The customer who 'doesn't pay deposits.' Often code for 'has cash-flow problems.' Mitigate with shorter payment terms (Net 7 instead of Net 30).
The customer who scope-creeps without acknowledging the cost. 'Can you also add X?' Without a change-order line item suggests they expect work for free; the invoice surprise at the end won't go well.
The customer who's hard to reach during the engagement. They'll be harder to reach after the invoice goes out.
The customer who paid the last invoice 60 days late. The next one will be at least 60 days too. Adjust expectations or shorten the next term.

Frequently asked questions

Can I refuse to do more work for a customer with an unpaid invoice?

Yes — and you should. State clearly: 'I'd love to continue, but I'll need to resolve the outstanding invoice first.' This is professional and reasonable; reasonable customers accept it. Customers who push back on this are customers you don't want.

Should I call the customer about an unpaid invoice?

Sometimes — phone calls have a higher response rate than email for amounts over $1,000. Call between business reminders (Day 14 and Day 30) if email is going unanswered. Keep tone professional; document the conversation in writing afterward via email.

Can I publicly shame a customer who won't pay?

Don't. Social-media shaming opens defamation exposure even when you're factually right, and it damages your reputation more than theirs. Use the legal channels (small claims, collections, lawyer letter).

What if the customer disputes the invoice?

Stop the chase, address the dispute directly. Clarify what's disputed (scope? quality? amount?). Offer mediation through a third party (industry association, mediator, attorney). Many disputes resolve when the customer feels heard; many also reveal that the customer's complaint is a delay tactic for non-payment.

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