How often should I follow up on a late invoice?

Pick a schedule and stick to it, for example once a week after the due date, a little firmer each time. Steady follow-up tells the client you are keeping track.

How do I stay firm without being rude?

Stick to the facts: invoice number, amount, the date it was due and how to pay. Skip apologies, guilt and sarcasm. A calm message that says exactly what happens next is firmer than an angry one.

Should I charge late fees, take deposits or keep a card on file?

Any of them can help, as long as they are in your agreement before the work starts so nothing is a surprise. Late-fee rules differ by state, so check yours or ask your accountant or attorney before charging one.

When is a client not worth keeping?

If someone pays late every time, disputes every invoice or ignores your final notice, the work may cost you more than it pays. Ask for payment up front next time, or let them go.

Will the agent send reminders without me?

No. It saves each reminder as a draft in your email. You read it, change anything you want and press send.

How do I chase late payments without being rude?

Put the due date and late-fee policy in writing before the job, then follow a fixed ladder: a friendly reminder, a firmer email, a text, a call, and one final notice with a deadline and a stated next step. Claude can track who owes what and draft each stage in your voice every week. You approve and send.

By Saar Litmanovich · Published November 4, 2026 · Updated November 4, 2026

Why this happens

Most owners already have reminder templates. What they are missing is someone who remembers. With several invoices out and the oldest well past due, chasing turns into an afternoon a week of digging through email, working out who was nudged and when, and writing each reminder from scratch.

Then it gets personal. You put off the next nudge because you do not want to sound desperate, or you wait so long that the message finally comes out sharp. You often cannot tell if the client even opened the invoice, so you wonder whether you are chasing someone who never saw it.

The problem usually starts before the reminder. The Federal Reserve's 2024 Report on Payments found that firms that take payment after delivery are more likely to have trouble with slow-paying customers, and that collecting payment at the time of service or purchase is the most common arrangement, used by 38% of the firms surveyed. The less you leave open after the job, the less there is to chase.

How to fix it in 20 minutes

Set the terms before the next invoice. Put your payment terms, deposit, due date and late-fee policy in the quote or agreement the client signs. Where it fits your trade, take a deposit up front, collect on site when the job is done, or keep a card on file with the client's agreement. Late-fee rules differ by state, so check yours before you add one. This is not legal advice.
Send every invoice as its own message. Do not bury it at the bottom of a job update. Include the invoice number, the amount, the exact due date (a date, not "net 30") and one clear way to pay.
Write down your ladder once. For example: a friendly email shortly after the due date, a firmer email the next week, a short text, a phone call, then one final notice with a deadline and the next step you will take. Collections or small claims come last, and only if you mean it.
Connect Claude to your work email and give it the ladder. It finds the invoices nobody paid, works out where each one sits on the ladder and drafts the next message in your voice. It saves drafts. It never sends on its own.
Set the tone rules. Short, friendly, factual. No apologies, no guilt, no threats you would not follow through on. Each stage gets a little firmer, never ruder.
Review on Monday and send. Read the drafts, adjust any client you have a reason to treat differently, and press send. Texts and calls are yours to make, and Claude can write what to say.

Here is the kind of instruction the agent runs each week:

Find every invoice I sent that has not been paid. For each one, tell me the client, amount, due date and the last time I followed up. Then draft the next reminder on my ladder in my voice: short, friendly and firm, with the invoice number, amount, due date and how to pay. Save drafts only. Do not send anything.

Do it with a free kit

The follow-up agent kit is one of our five free kits. You walk out with a total of the unpaid invoices and unanswered quotes in your inbox, and a polite follow-up drafted in your voice every Monday for you to send. If you also suspect cash is slipping out through fees, refunds or software you no longer use, the money leak agent kit finds those.

Do it with a free kit

The follow-up agent walks you through it step by step, with copy-paste prompts for Claude.

Open the follow-up agent

Questions owners ask

How often should I follow up on a late invoice?: Pick a schedule and stick to it, for example once a week after the due date, a little firmer each time. Steady follow-up tells the client you are keeping track.
How do I stay firm without being rude?: Stick to the facts: invoice number, amount, the date it was due and how to pay. Skip apologies, guilt and sarcasm. A calm message that says exactly what happens next is firmer than an angry one.
Should I charge late fees, take deposits or keep a card on file?: Any of them can help, as long as they are in your agreement before the work starts so nothing is a surprise. Late-fee rules differ by state, so check yours or ask your accountant or attorney before charging one.
When is a client not worth keeping?: If someone pays late every time, disputes every invoice or ignores your final notice, the work may cost you more than it pays. Ask for payment up front next time, or let them go.
Will the agent send reminders without me?: No. It saves each reminder as a draft in your email. You read it, change anything you want and press send.

Sources

Federal Reserve Banks: 2024 Report on Payments, findings from the 2023 Small Business Credit Survey