Second Notice Past-Due Invoice Letter Template

The first reminder went unanswered and the next step feels awkward. This letter keeps it simple: it points back to your first reminder, states the balance, and asks for one specific thing, a payment date.

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The template

[Your Firm Name]
[Your Address]

[Date]

[Client Contact Name]
[Client Company]

RE: Second notice, invoice #[Number]

Dear [Client Name],

I wrote on [Date of First Reminder] about invoice #[Number] for [$Amount], due [Due Date]. It is now [Number] days past due, and I haven't heard back.

Please pay by [Payment Deadline] using [Payment Method / Link], or reply with the date we can expect payment.

If there's a problem with the invoice or the work, tell me now and we'll fix it.

Thank you,

[Your Name]
[Your Firm Name]
[Phone] | [Email]

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When to use this letter

The invoice is about 30 to 60 days past due and your first reminder got no reply.
You haven't heard of any dispute about the work or the amount.
You want a clear record that you followed up a second time.

Tips

Give a real deadline, usually 7 to 10 days out. "As soon as possible" gets ignored.
Ask for a payment date, not just payment. A date is a commitment you can follow up on.
Invite disputes now. Hearing about a problem at 45 days is far better than at 120.
Call the same week. A letter plus a phone call works better than either one alone.

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This is a general business-communication template, not legal advice. You are responsible for compliance with the laws that apply to your collections activity.