Freelance ops · Getting paid

Overdue Invoice Email to an Agency Client: Templates for Subcontractors

Agencies are some of the best repeat clients a freelancer can have, and also some of the slowest payers. Your invoice often sits behind the agency's own client billing, a project manager who is not in charge of payments, and a finance team that batches payouts monthly. These emails keep the relationship warm while making it clear your payment terms are with the agency, not with their end client.

Why agency invoices get stuck

Your project manager or producer approved the work but never forwarded the invoice to finance.
The agency is waiting for its own client to pay before paying subcontractors.
Invoices need a PO number, project code, or vendor setup you were never asked for.
Finance only runs vendor payments once or twice a month, and you missed the cutoff.

Before you send

Check your agreement or SOW: your terms are with the agency, so their client's payment status is not a condition unless you agreed to it.
Ask your contact for the right accounts payable email and any PO or job number to put on the invoice.
Confirm you are set up as a vendor (W-9 or tax form, bank details) so nothing blocks the payment run.
Keep a short record: work delivered, approval email, invoice date, due date, and reminders sent.

Free template 1: Friendly reminder to your agency contact

Replace every [bracket] before sending.

Subject: Invoice [Invoice #] for [Project Name]: quick check on payment

Hi [Contact Name],

Hope the [Project Name / Client Name] launch went well. Thanks again for bringing me in on it.

A quick admin note: invoice [Invoice #] for [Amount] was due on [Due Date] and I have not seen payment yet. Could you check whether it made it to your finance team, or let me know if it needs a PO or job number added?

Invoice and payment details are attached, and you can also pay here: [Payment Link].

Happy to help with the next one whenever you need me.

Thanks,
[Your Name]

Free template 2: Note to the agency's finance or accounts payable team

Replace every [bracket] before sending.

Subject: Vendor invoice [Invoice #]: [Amount], [Days] days overdue ([Agency Name] / [Project Name])

Hello [Agency Name] Accounts Team,

I am a contractor for [Agency Name] and worked on [Project Name] with [Contact Name]. I am following up on the invoice below, which is now overdue:

- Invoice: [Invoice #]
- Amount: [Amount]
- Issued: [Invoice Date], due [Due Date] ([Payment Terms])
- PO / job number: [PO Number]
- Approved by: [Contact Name] on [Approval Date]

Could you confirm it is in your system and let me know the payment run date? If anything is missing from my vendor setup (tax form, bank details), please tell me and I will send it today.

Thank you,
[Your Name]
[Business Name] · [Phone]

Free template 3: Firm final notice (not tied to their client paying)

Replace every [bracket] before sending.

Subject: Final reminder: invoice [Invoice #] for [Amount] due by [Final Deadline]

Hi [Contact Name] and [Finance Contact],

I am following up again on invoice [Invoice #] for [Amount], now [Days] days past its [Due Date] due date. I have sent reminders on [Reminder Dates].

I understand [End Client] may still be paying [Agency Name], but our agreement dated [Agreement Date] sets payment terms of [Payment Terms] from my invoice date, and it does not depend on the end client's payment.

Please pay the full balance by [Final Deadline] at [Payment Link], or reply with a confirmed payment date. If I do not hear back, I will need to [pause work on current projects / apply the late fee in our agreement / pursue the balance formally].

I value working with your team and would like to keep doing so.

Regards,
[Your Name]

Free sample: try one email from the full pack before you buy.

Free mini-pack: 3 more follow-up templates (HTML + PDF), no signup.

Related guides

Want every step of the sequence ready?

Chase-Free Client Follow-Ups is a $9 digital pack with 12 copy-paste emails (soft nudge, value bump, deadline, final notice, and proposal follow-ups) plus a tracker CSV for what to send next. Instant download, 30-day refund.

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Not legal advice. These are practical communication templates for freelancers and small service businesses. For disputed or large debts, talk to a lawyer in your jurisdiction.