How to handle late-paying clients: 5 email scripts that work
A four-stage reminder schedule, the exact emails to send at each stage, and when a small claim is worth filing.
On this page
- Why most invoices go late
- The four-stage reminder schedule
- Email 1: the polite reminder (day 1)
- Email 2: the firm reminder (day 7)
- Email 3: the final demand (day 21)
- Email 4: the action step (day 30)
- Email 5: after the money arrives
- Stop work, but write it down first
- How Delivvo sends the reminders for you
- FAQ
Handle a late-paying client with a schedule, not a mood. Send a friendly reminder the day after the due date, a firmer one at day 7, a final demand at day 21, and move to a demand letter or small claim at day 30. The five emails below cover each step.
Chasing money feels personal, but it is mostly logistics. Over half of small businesses (56%) say they are owed money from unpaid invoices, averaging $17,500 each, and 47% have invoices more than 30 days overdue, according to the QuickBooks 2025 Late Payments Report. You are in the majority. The ones who get paid are the ones with a routine.
Why most invoices go late
Most late invoices are late because nothing forced a payment date, not because the client plans to stiff you. An invoice lands in an inbox, gets forwarded to someone in accounts, and waits for a weekly payment run. Nobody decided to ignore you.
The numbers back this up. US small businesses were paid an average of 9 days late in the first quarter of 2026, and the average wait to be paid was 28.8 days, according to Xero's Small Business Insights. That is the normal state of things, not a crisis.
Three habits shrink the problem before you write a single reminder. Ask for a deposit before work starts, so the client has already paid once and the final invoice feels routine. Put a short due date in the contract, seven or fourteen days rather than thirty. And send invoices with a pay button on them, because online payment is up to four times faster than paper, per the same QuickBooks report. Our guide on collecting a deposit before the project starts covers the first one in detail.
Even with all three in place, some invoices will still run late. That is what the schedule is for.
The four-stage reminder schedule
Run the same four stages for every late invoice, on dates you fix in advance. Skipping stages or improvising your tone is what makes chasing exhausting.
- Day 1 after the due date: a polite reminder that assumes the invoice slipped through.
- Day 7: a firm reminder that cites the contract and shows the late fee as a number.
- Day 21: a final demand with a deadline and a named next step.
- Day 30: stop emailing and act, with a demand letter, a small claim or a collections agency.
These intervals are a convention, not a law. Shorten them for small invoices and lengthen them for a client who has always paid on time. What matters is that the client can predict what comes next, and that you never skip a stage because you feel awkward.
Email 1: the polite reminder (day 1)
Send this the morning after the due date. It assumes a mistake, gives the client an easy way to pay, and keeps the relationship warm.
Hi [Name],
>
Invoice #1234 for $3,000 was due yesterday and I have not seen it come through yet. It may have slipped past you, so here is the link again: [invoice or payment link].
>
If you need anything from me to process it, tell me and I will send it today.
>
Thanks, [Your name]
Keep it under 80 words. Do not apologize for sending it, and do not pad it with "I completely understand you are busy." The softer the email, the easier it is to ignore.
Email 2: the firm reminder (day 7)
A week in, the tone changes. You are now pointing at the contract, politely and explicitly.
Hi [Name],
>
Invoice #1234 is now 7 days overdue. Under our agreement, a late fee of 1.5% per month applies from the original due date, so the balance today is $3,045.
>
Could you confirm the date you will pay it? If something is blocking it on your side, tell me what it is and I will help clear it.
>
Best, [Your name]
The fee appears as a real figure, not a threat. A late fee works as friction: once it is accruing, "I will get to it next week" stops being free for the client. On a $3,000 invoice at 1.5% a month, you add $45 after one month and about $90 after two. Keep it at that level. Much higher monthly rates are often unenforceable or read as punitive. We cover the arguments for and against in should you charge late fees.
If you have no late fee in your contract, you may still have a statutory right in some countries. In the UK, businesses can charge interest on late commercial payments at 8% plus the Bank of England base rate, per GOV.UK, and can claim a fixed recovery sum of £40, £70 or £100 depending on the size of the debt, also per GOV.UK. Check what applies where you and your client are based with your accountant or lawyer.
Email 3: the final demand (day 21)
Three weeks of silence is no longer an admin slip. This email sets a deadline and names what happens next.
Hi [Name],
>
Invoice #1234 is 21 days overdue. The current balance, including the late fee in our agreement, is $3,090.
>
If I do not receive payment by [date, seven days from today], I will send a formal demand letter and pursue the debt through small claims or a collections agency. I would rather resolve this directly. Please reply with a payment date before [date].
>
[Your name]
Read it once before sending and remove anything that sounds angry. A calm email with a date in it is harder to dismiss than a loud one. Pause any work in progress for this client until the account is current, and say so in the email if your contract allows it.
Email 4: the action step (day 30)
At day 30 you stop writing reminders and pick one route.
- A demand letter from a lawyer usually costs $100 to $300 and often settles the matter on receipt. It is worth it on invoices over about $2,000.
- Small claims works without a lawyer for modest debts. California, for example, lets an individual sue for up to $12,500 and a business for up to $6,250, with a filing fee of $30 to $100, according to the California Courts self-help site. Other states and countries set different limits, so look up yours.
- A collections agency typically keeps a share of whatever it recovers, often a quarter to a half. Use it when the invoice is too small for a claim to make sense.
Do the math before you file. A $3,000 invoice, a $50 filing fee and three hours spent gathering evidence leaves you well ahead of the alternative, which is writing it off. A $400 invoice usually does not clear that bar, so send one last email and let it go, or use a collections agency.
Email 5: after the money arrives
Once the invoice is paid, send one more short note. It confirms the payment and resets the terms for the next job.
Hi [Name],
>
Payment for invoice #1234 has arrived. Thank you for closing it out.
>
For future projects I am moving to 7 day payment terms and a deposit before work starts, so everything stays predictable on both sides. Happy to keep working together.
>
[Your name]
Most people skip this email, and then the next invoice goes late for the same reason. The "going forward" line changes the terms without turning it into an argument.
Stop work, but write it down first
You can usually pause work on a late account, provided your contract says so. If it does not, add a clause: work stops if any invoice is more than 14 days overdue, and resumes the day it is paid. Without that clause, pausing can look like breach of contract on your side.
Keep a written record of every reminder, including date and wording. If you ever file a claim, a clean trail of dated emails and the signed contract is most of your evidence. For a wider look at why this keeps happening, see the 2026 late payment crisis.
How Delivvo sends the reminders for you
Delivvo runs the day 7, 14 and 30 reminders on its own, and stops the moment the invoice is paid, so you never write an email 2 from scratch again. Here is the flow, start to finish.
- A client fills in your inquiry form, you send a quote from your packages, and they accept it.
- The client signs the contract and pays the deposit from the same link, so the first payment is already behind you before work begins.
- You issue invoices with sequential numbers in your own format, each with a pay button that opens your own payment gateway. Clients pay you directly, and Delivvo takes 0%.
- For a larger job, set up a payment schedule of up to 12 payments, so no single invoice carries the whole balance.
- If an invoice goes unpaid, the late payment rule in Automations sends reminders at 7, 14 and 30 days after the due date, then stops once the invoice is paid.
- The client sees the money owed, the signed contract and past invoices in one place in the client portal, which means "I never got it" is answered with one click.
One detail most invoicing tools lack: every invoice, receipt and contract carries a verification code. A client's accountant can check the document, its number, the amount and its status on the Verify page. When a payment is being questioned, that is hard to argue with.
You still decide what happens after day 30. Delivvo does not file claims or hire collections for you, and it does not give legal advice. It makes sure the first three stages happen on time without you having to remember them. See how invoicing and payment schedules work in detail.
Read more about how payments work, or start with the CRM and client portal.
FAQ
How long should I wait before following up on a late invoice?
Send the first reminder the day after the due date. A short polite note costs nothing and clears many invoices that were simply missed. Waiting a week or two teaches the client that the due date is optional.
Can I charge interest on a late invoice?
Only if your contract says so, or if your country has a statutory right. A fee of 1.5% per month is common and easy to defend. In the UK, statutory interest on business debts is 8% plus the base rate. Ask your accountant or lawyer what applies to you.
Should I stop working for a client who has not paid?
Usually, yes, as long as your contract allows a pause. Delivering more work on top of an unpaid invoice is how one late payment becomes three. Tell the client in writing that work resumes as soon as the account is current.
When is small claims worth it?
When the invoice, minus the filing fee and the hours you spend preparing, leaves you clearly ahead. For most small businesses that starts somewhere around $1,500 to $2,000. Below that, a collections agency or writing it off is usually the better trade.
How do I stop clients paying late in the first place?
Take a deposit before work starts, use 7 or 14 day terms rather than 30, and put a pay button on every invoice. Then let a schedule of automatic reminders do the awkward part.
Delivvo runs the whole client cycle for service businesses, from the first inquiry to the quote, contract, deposit, invoice and delivery, so late invoices get chased on a schedule instead of by you. Clients pay you directly through your own gateway, and Delivvo takes 0%. Start free