Past Due Invoice: What to Do Next
A past due invoice is not a personal insult. It is a process problem: the due date passed and the money did not. What you do next should be calm, dated and written down. This guide walks through a check of your own file, a first reminder and the later steps if the invoice stays unpaid.
Check Your File Before You Accuse Anyone
Open the PDF you sent. Confirm the email address, the amount, the due date and the bank details. Confirm that the client received it. A surprising number of "late" invoices were sent to a junk folder or to someone who left the company. If you find your own error, send a corrected invoice or a credit note. See how to cancel or void an invoice and credit notes.
Follow a Timeline, Not a Mood
A simple path works for most small balances:
- A polite reminder a few days after the due date.
- A firmer note a week later, restating the amount and payment details.
- A call or a named contact if you have one.
- A final written request before you pause work or seek other recovery options.
Ready-made wording lives in payment reminder emails. The fuller calendar is in the overdue follow-up timeline. Late-fee language, if you use it, must match the contract; see late payment fees.
Tip: Log every reminder in your unpaid-invoice sheet. Future you will need those dates. Use this tracking method.
Decide Whether to Keep Working
If the same client has a past due invoice and wants new work, it is reasonable to pause until the balance is paid, as long as you say so professionally. Do not start a new job and hope the old bill resolves itself.
Treat a past due invoice as a checklist, not an argument.
Watch out: Debt collection, court claims and what you may charge in interest depend on local law. Get advice before you threaten legal action.
Frequently Asked Questions
How many days late is "past due"?
The day after the due date on the invoice. If you wrote Net 14, day 15 is past due.
Should I send a new invoice with a new number?
No, not for the same work. Remind them of the existing number. A new number creates duplicate records.
What if they pay part of it?
Thank them, record the amount and state the remaining balance in writing, with the original invoice number.
Make the next invoice harder to ignore. Create a clear free invoice with a due date and payment details.