How soon should I follow up on an unpaid invoice?

Send the first reminder the day after the due date. Waiting a week or two trains clients to treat your due date as optional. A prompt, friendly nudge the day after collects most forgotten invoices without any friction.

How many times should I follow up before taking action?

Three structured touches — day after due, 7 days overdue, and 14 days overdue — clear the large majority of late invoices. If the third notice (which references your late fee and next steps) gets no response, that is the point to call directly, pause further work, or consider a collections step.

Can I charge a late fee on an overdue invoice?

Yes, but only if the late fee was disclosed in advance — on your quote, contract, and the invoice itself. A typical enforceable rate is around 1.5% per month on the outstanding balance, though some states cap it, so confirm what is legal in your area before applying it.

How to Follow Up on Unpaid Invoices

Most unpaid invoices are forgotten, not refused

The mental picture contractors carry is of a client who looked at the invoice and decided not to pay. That client exists, but they are rare. The overwhelming majority of overdue invoices are simply sitting in an inbox, unread or half-read, behind forty other emails. The client isn't dodging you — they forgot, the invoice got buried, or they meant to pay it Friday and Friday turned into next Friday.

This matters because it changes the tone of your follow-up. If you assume the worst, your first reminder comes across as accusatory, and you've damaged a relationship with someone who was always going to pay. If you assume the best, your reminder reads as a helpful nudge — and it still works on the small number of clients who were stalling, because a calm, organised creditor is harder to ignore than an angry one.

The goal is a sequence you run the same way every time, so chasing payment stops being an emotional decision and becomes a routine. For the bigger picture on speeding up collections, see how to get paid faster as a contractor.

The three-touch follow-up sequence

You need three messages, sent on a fixed schedule. Don't improvise the timing — decide it once and apply it to every invoice.

Touch 1 — the day after the due date

Friendly and low-pressure. You're assuming an oversight, because usually that's what it is.

"Hi [name], just a quick reminder that invoice #1042 for $1,840 was due yesterday. Here's the payment link again — [link]. If you've already sent it, ignore this and thanks!"

Touch 2 — 7 days overdue

Firmer, still polite. You name the number of days and make the next step easy.

"Hi [name], invoice #1042 ($1,840) is now a week overdue. Could you let me know when I can expect payment? You can pay instantly here — [link]. Happy to sort out anything that's holding it up."

Touch 3 — 14 days overdue

Final notice. Reference your terms and any late fee, and state what happens next without threats.

"Hi [name], invoice #1042 is now two weeks overdue. As per the terms on the invoice, a late fee of [amount] now applies. Please arrange payment within 3 days to avoid further fees — [link]. If there's a problem, call me and we'll work it out."

That last line — "call me and we'll work it out" — matters. It signals you're reasonable, which makes the rare genuine dispute surface before it becomes a standoff.

When to mention a late fee

A late fee only works if the client agreed to it before the job started — that means it's on your quote, your contract, and your invoice, not invented at the moment it's overdue. A common, enforceable structure is 1.5% per month (the equivalent of 18% per year) on the outstanding balance, but check what's legal in your state, as some cap the rate.

The point of a late fee usually isn't the extra money. It's that it gives your third reminder teeth and gives slow payers a reason to move your invoice to the top of the pile. To work out a specific figure to quote, use the late fee calculator, and make sure your payment terms are set up correctly from the start — see contract invoice payment terms explained.

Automate the chase so you never have to think about it

The reason contractors lose money on late invoices isn't that the sequence above is hard — it's that nobody runs it. You're on a job site, not watching due dates, and chasing a client you'll see again next month feels awkward, so the reminder never goes out.

The fix is to take yourself out of the loop. When the schedule is automatic, the day-after reminder and the 7-day and 14-day follow-ups send themselves, in your name, with the payment link attached — and they stop the moment the invoice is paid. You never make the awkward call, and no invoice slips through because you were busy.

Fieldpaid does exactly this: every invoice you send schedules its own reminder sequence automatically, cancels it when the client pays, and shows you which clients consistently pay late so you can adjust terms or deposits for next time.

How to Follow Up on Unpaid Invoices (Without Burning the Relationship)