Guide · Invoices · 7 min read
What to do when a client won’t pay
An escalation ladder from day 1 to day 30, with the email for each rung, and an honest look at small claims, collections, and when to write it off.
· Ferrier Industries LLC
In short
- An unpaid invoice is often an oversight, a stuck approval, or a missing purchase order. Check your own side first: right person, right PO number, an explicit due date.
- Follow a ladder so you do not have to guess: a nudge the day after the due date, a specific question at day 7, a notice and a pause in work at day 14, a phone call at day 21, a final notice at day 30.
- Never threaten a step you are not willing to take. A bluff that gets called is worse than no letter at all.
- After day 30 the real options are small claims court, a lawyer’s demand letter, a collections agency, or writing it off. Decide before day 60.
- A deposit, staged billing and ownership on final payment prevent most of this.
An unpaid invoice is not always a refusal. Often it is an oversight, an approval stuck in someone’s inbox, or a missing purchase order nobody told you about. Some are cash-flow problems, and a few are people who never intended to pay.
The point of an escalation ladder is that you do not have to guess which one you are dealing with. You follow the steps, the tone hardens on a schedule, and by day 30 you know what kind of client this is.
The ladder at a glance
| Day | What you do | Tone |
|---|---|---|
| Day1 | What you doA short nudge with the payment link | ToneLight. It is probably an oversight. |
| Day7 | What you doAsk what date it will be paid | ToneFriendly, and specific. |
| Day14 | What you doGive notice: interest is accruing and work is paused | TonePlain. |
| Day21 | What you doPhone, then confirm the call in writing | TonePleasant, and direct. |
| Day30 | What you doFinal notice, with a deadline and a stated consequence | ToneFormal. |
Before anything else: check your own side
Three minutes here saves embarrassment. Did the invoice go to the person who pays, not the one who hired you? Does it carry a PO number if their system requires one? Was it actually sent, and is it sitting in a spam folder? Is the due date on it explicit? Some late invoices are late for a reason on the sender’s side.
Day 1 after the due date: the friendly nudge
Send it the day after, not a week after. Waiting signals that the date was decorative. Keep it light.
Subject: Invoice 0142, due yesterday Hi Dana, Just flagging that invoice 0142 ($4,500) was due yesterday and is showing as unpaid on my end. Payment link: [link] If it is already in a payment run, ignore me. If you need anything from me, such as a PO number, a copy to your accounts payable team, or a different format, say the word. Thanks, Sam
Day 7: get specific
Still friendly, but now the email asks a question that has to be answered. Vague reminders get vague non-answers. “What date will this be paid?” gets a date.
Subject: Invoice 0142, 7 days overdue Hi Dana, Invoice 0142 for $4,500 is now a week past its due date and I have not seen a payment or a reply. Can you tell me what date it will be paid? If it is stuck somewhere in the approval process, tell me who is holding it and I will follow up with them directly rather than adding to your inbox. Payment link: [link] Thanks, Sam
If you have a work-stoppage clause and other work is running, this is the email that mentions it, once, as information rather than a threat: “Under our agreement I pause work on an invoice more than 14 days overdue, which would be August 26.”
Day 14: notice, and stop work
Two weeks in, the tone shifts from reminder to notice. Say that interest is accruing and confirm work is paused. Copy anyone else relevant: their finance address, or the person who signed the contract if you have been dealing with a project manager.
Subject: Invoice 0142, 14 days overdue, work paused Hi Dana, Invoice 0142 for $4,500 is now 14 days overdue and I have had no reply to my last two emails. As set out in our agreement, interest at 1.5% per month has been accruing since the due date, and work on the remaining phases is paused until the account is clear. If there is a cash-flow problem, tell me. I will set up a payment plan today and we can keep moving. I would much rather do that than keep sending these. Payment link: [link] Sam
Offering the payment plan is not weakness. A client in real trouble will take it, and it removes their last excuse for silence. Freelance late fees that work covers the fee itself.
Day 21: phone call
Email is easy to ignore. A voice is not. Call the person who hired you, be pleasant, and ask one question: “What do I need to do to get this paid this week?” Then be quiet and let them answer. Follow the call with an email that records what was agreed, because the agreement is the point.
Hi Dana, Good to speak. To confirm what we agreed: the invoice goes into the payment run on September 8, and you will send me confirmation once it is scheduled. If it has not cleared by September 11 I will follow up with a formal notice. Thanks for sorting it, Sam
Day 30: final notice
This one is deliberately formal. Plain, unemotional, with a deadline and a stated consequence you are willing to carry out. Never threaten anything you will not do. A bluff that gets called is worse than no letter at all.
Subject: Final notice before recovery, invoice 0142 Dear Dana, Invoice 0142 for $4,500, due August 12, is 30 days overdue. With one month of late-payment interest applied at 1.5%, the balance is $4,567.50. Emails on August 13, 19, and 26 and a call on September 2 have not resulted in payment. This is a formal final notice. If the balance is not paid in full by 5pm on September 16, I will begin recovery without further contact, which may include filing a claim in small claims court and referring the debt to a collections agency. Under our agreement, intellectual property in the delivered work transfers only on payment in full. Until the balance is cleared, use of the delivered materials is unlicensed. Payment can be made here: [link] I would still much rather resolve this directly. A payment plan remains available until the date above. Regards, Sam
The ownership paragraph does more work than the legal language around it. A company running a live campaign on material it does not own has a problem its legal team will want closed.
After day 30: the real options
- Small claims court. No lawyer needed, and the filing fee is modest. Each US state sets its own limit on the size of the claim, from a few thousand dollars upward. You still have to collect after you win, which is the part people forget.
- A lawyer’s demand letter. A letter on letterhead is cheap next to a lawsuit, and it often works on small companies.
- A collections agency. It works on contingency and keeps a large share of whatever it recovers, so get the rate in writing first. It also ends the client relationship.
- In the UK, a letter before action (in EU countries, the local formal payment demand) citing statutory late payment interest and fixed recovery costs. It is standard, and it signals you know the process.
- Write it off. Sometimes the right answer. Two more weeks of your attention can be worth more than a small invoice. Do not assume a tax deduction: if you report income when it is received, an invoice that was never paid was never income, so ask your accountant.
What not to do
- Do not post about it publicly. It feels good for an hour and can cost you referrals for years.
- Do not delete or sabotage delivered work. Depending on where you are, it can turn your strong position into a legal problem of your own.
- Do not keep working while unpaid, hoping goodwill will fix it. Every extra hour increases what you stand to lose.
- Do not threaten steps you will not take. One threat you do not carry out undermines everything after it.
- Do not let it run past 60 days without a decision. Choose to escalate or choose to write it off. The drift is what hurts.
Making the next one unlikely
Every unpaid invoice is a lesson about the terms you had in place. The changes that prevent most of them:
- A deposit before any work begins. Money already collected cannot go unpaid.
- Milestone or monthly billing, so you are never owed more than a few weeks of work.
- Ownership that transfers on final payment, written into the contract and repeated on the invoice.
- A work-stoppage clause at 14 days overdue, used every time.
- An explicit due date and a single payment link on every invoice.
- A reminder schedule you follow automatically rather than deciding to send each time.
The last one is the quiet one. Following up is unpleasant, so it gets postponed, and a two-day nudge becomes a two-month problem.
PaloWorks sends invoice reminders on a schedule you set. The default is three days before the due date, on the day, and three and seven days after, and you can pause them for a client who has promised a date. Automatic invoice reminders explains the settings, and Send the invoice the day the work is done is about when to send it and how to follow up.
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