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How to Ask a Client for Payment — Politely, Then Firmly

Most late payments are not refusals. They are invoices that never entered the approval queue. That changes what you should send, and when.

Below is the schedule an overdue invoice should follow, the two emails that do most of the work, and the mistakes that make an invoice read as optional.

Not legal advice. I'm not a lawyer. For anything high-value or heading toward a formal claim, take advice in your jurisdiction.

The schedule

The ladder below is the whole method. Each rung has a job, and skipping rungs is what turns a late invoice into an old one.

The pre-due nudge is the one that matters most and the one nearly everyone skips. An email three days before the due date costs nothing and prevents most of the ladder below it from ever being needed.

Two rules hold for the whole sequence:

1. Never skip a rung, never stall on one. Predictability is the pressure. A client who learns that day 7 always brings a firmer email starts paying on day 6.
2. Every email restates the amount, the invoice number, and the due date. The person who eventually pays you is often not the person you have been emailing, and they need those three facts without scrolling.

Three days before it's due

Subject: Re: Invoice [INV-2026-014] · due [Friday]

Hi [NAME],

Quick heads-up that invoice [INV-2026-014] for [$1,440] is due [this Friday, 6 Sep].

Nothing needed if it's already scheduled — just flagging it in case it needs to go through approvals first.

[YOUR NAME]

Three days after it's due — the polite chase

This is the email most people are looking for when they search for a polite way to ask. Note what it does not do: it does not apologise, and it does not ask for money. It offers an excuse and asks for a routing.

Subject: Re: Invoice [INV-2026-014] · now 3 days overdue

Hi [NAME],

I don't think payment has come through for invoice [INV-2026-014] ([$1,440], due [6 Sep]). I'm assuming it's slipped through a gap rather than anything else.

Could you confirm it's in the payment run, or point me to whoever handles AP if it's easier for me to chase it there?

Re-attaching the invoice for convenience.

[YOUR NAME]

When polite stops working

At about a week overdue the request has to change shape. Stop asking for payment and start asking for a date.

A request for a date is much harder to leave unanswered than a request for money, and once someone commits to a date in writing, the next email writes itself. This is also where you mention the interest your contract already provides for — mention it, not apply it. The threat is a lever; the charge is a small amount of money that costs you the lever.

Past two weeks, the recipient changes. Accounts payable or your contact's manager, with your original contact copied in — not blind-copied, because the point is that they can see it — and work suspended until it clears.

What not to do

• Do not apologise for invoicing. "Sorry to chase" trains the client to treat payment as a favour. "Following up on invoice 014" is neutral, professional, and not rude.
• Do not keep working. Unpaid work is the most expensive thing in freelancing.
• Do not discount to get paid faster once the invoice is already late. You are rewarding the behaviour and repricing work you already delivered.
• Do not post about it publicly. It feels good for an hour, it damages your reputation more than theirs, and in some places it hands them a claim while you are trying to collect a debt.
• Do not send five emails in a week. Frequency reads as panic; regularity reads as process.
• Do not go quiet for a month and then restart at the beginning. That tells the client the sequence resets, and the debt gets older while you are being polite.

What actually prevents this

Ranked by how much late payment each one removes:

1. Take a deposit. Nothing else comes close. A client who has paid 40% up front behaves differently for the whole project.
2. Don't hand over the final asset until the final payment clears — deployment, source files, account transfer. This turns collection from a request into a condition.
3. Invoice the day the milestone is accepted. Every day you delay invoicing is added to the payment cycle, and it comes off the end.
4. Send the pre-due nudge. Three days early, every time, no exceptions.
5. Get the AP contact and the PO requirement at kickoff, not at day 25.
6. Make it trivially easy to pay you. Correct bank details, the invoice number as the reference, no currency the client has to convert by hand.
7. Charge new clients Net 14. Offer Net 30 as a reward for a good payment history, and say so out loud — it turns your terms into something they earn.