How to chase an overdue retainer invoice without straining the relationship
A polite, predictable reminder schedule gets agency retainers paid without straining the relationship. Here is the schedule, the wording for each step, and who should send what.
The best way to chase an overdue retainer invoice is to follow the same polite schedule for every client, starting before the due date: a courtesy note, a due-date reminder, two follow-ups after it passes, then a call. When chasing is routine, it stops feeling personal, and clients know what comes next.
Agencies find this harder than most businesses because the person who would chase is often the person who manages the account. Nobody wants to send a payment reminder the day before a strategy call. This guide gives you a schedule, wording for each step, and a way to keep the account relationship out of it.
Why agencies put off chasing invoices
- It feels awkward. Account managers worry a reminder will sour the relationship.
- Nobody owns it. Finance assumes the account manager will mention it; the account manager assumes finance has it.
- The work keeps going. A retainer means you’re delivering this month while last month’s invoice is still open, so the debt grows quietly.
- Every reminder is written from scratch. So each one takes thought, and it gets pushed to tomorrow.
A reminder schedule that works
Adjust the days to your payment terms. The point is that every client gets the same steps, in the same order, so nobody has to decide when to chase.
- Three to five days before the due date: a friendly heads-up with the invoice attached and a link to pay.
- On the due date: a short reminder that it’s due today.
- Seven days overdue: a follow-up asking whether anything is holding it up, such as a missing PO number or a new contact in accounts.
- Fourteen days overdue: a firmer note with a clear date and what happens next under your agreement.
- After that: a phone call from the agency owner or finance lead, not the account manager.
Email templates for each step
Keep each message short, attach the invoice every time, and include a way to pay in one click if your billing system offers one.
Subject: Invoice [number] for [month] is due on [date]
Hi [name], a quick heads-up that invoice [number] for [amount] is due on [date]. It’s attached, and you can pay here: [link]. If anything needs to change on your side, such as a PO number or a new billing contact, just let me know.
Subject: Invoice [number] is due today
Hi [name], just a reminder that invoice [number] for [amount] is due today. Here’s the link to pay: [link]. Thanks!
Subject: Following up on invoice [number]
Hi [name], invoice [number] for [amount] was due on [date] and still shows as open on our side. Is there anything holding it up, such as an approval or missing details? I’ve attached it again, and the payment link is here: [link].
Subject: Invoice [number] is now 14 days overdue
Hi [name], invoice [number] for [amount] is now 14 days past its due date of [date]. Could you let me know by [date] when we can expect payment? Under our agreement, [what happens next, e.g. a late fee or a pause on new work] applies after [date]. If there’s a problem, I’d rather hear about it now so we can sort it out together.
Only mention a consequence your contract actually includes, and only if you are prepared to apply it. An empty threat teaches the client that your deadlines move.
Who should send the reminders
Send reminders from a billing address or the finance lead, not the account manager. It keeps the strategy relationship separate from the money conversation, and it signals that this is process, not a personal complaint. The account manager should still know where every invoice stands, so a payment issue never surprises them on a client call.
Prevent overdue invoices in the first place
- Agree payment terms in writing before work starts: due date, accepted payment methods, and what happens when an invoice is late.
- Invoice on the same day each month so clients can plan for it.
- Confirm the billing contact at onboarding, and ask again when a client restructures.
- Make paying easy: a payment link, card and bank transfer options, and the invoice attached as a PDF.
- Bill retainers in advance where you can, so the work isn’t already done when the invoice goes unpaid.
When to pause work
Pausing work is a business decision, not a reminder step, and it should follow what your contract says. If you do it, say so in writing, give a date, and keep the tone factual. Steady, polite reminders mean it rarely has to come to that.
How Lane runs the schedule for you
BotLane’s Invoice follow-up lane watches open invoices in Stripe, QuickBooks Online or Xero. It prepares each reminder on schedule, in your wording, with the invoice and a payment link, and stops as soon as the client pays or replies. Every reminder waits in your approval queue, so a person on your team decides what is sent and when. Nothing goes out on its own.
Common questions
How soon should you follow up on an unpaid invoice?
Start before it is due with a courtesy note, then follow up on the due date and about a week after. Waiting a month before the first reminder makes the conversation harder, not easier.
Is it rude to send a reminder before an invoice is due?
No. A short heads-up with the invoice attached is a service: it catches missing PO numbers and wrong contacts while there is still time to fix them.
Should the account manager chase the invoice?
Ideally not. Keep them informed, but let billing or the finance lead send the reminders and make the calls.
See Lane prepare the work
Lane prepares the reports, replies and reminders. Your team approves every one before it goes out.