Asking to be paid feels awkward, but it's part of the job. Most late payments aren't malicious. The invoice got buried, went to the wrong person or is waiting on someone's approval. A calm, well-timed follow-up plan fixes most of them without hurting the relationship.
This guide covers the process: when to follow up, which channel to use at each stage and how to escalate if the reminders don't work. If you just need wording for the email, jump to our 10 friendly reminder email templates.
Key takeaways
Plan your follow-ups before the invoice is due: a heads-up before, a nudge on the day, then reminders at about one and two weeks late.
Start with email for the paper trail, then switch to a phone call if emails get no answer.
Each reminder should include the invoice number, amount, due date and a way to pay.
Escalate in steps: friendly, firm, final notice, then formal recovery.
Know your rights. New York, the UK and the EU all give freelancers or businesses specific protections against late payment.
Before you send a reminder: check your side
A quick check prevents an embarrassing follow-up:
Did the invoice go to the right person? Your project contact may not be the one who pays.
Is everything on it correct? A wrong amount, missing PO number or missing bank detail is a common reason invoices stall. See common invoicing mistakes.
Is it actually late? Check the due date and terms you agreed, not just the date you sent it.
Has payment arrived? Check your bank and payment accounts first.
The payment reminder timeline
Here's a simple schedule you can adapt. Day 0 is the due date.
When | What to do | Channel | Tone |
|---|---|---|---|
2–3 days before | Courtesy heads-up that the invoice is due soon | Friendly, informative | |
Day 0 (due date) | Short "due today" note with the payment link | Neutral | |
Day 1–3 | "Did you receive my invoice?" follow-up | Polite, assume an oversight | |
Day 7 | Firmer reminder with a specific date to pay by | Email, then phone if no reply | Direct |
Day 14 | Phone call; agree a date or a payment plan | Phone, then email summary | Firm, solution-focused |
Day 21–30 | Final written notice with a deadline and next steps | Email and/or letter | Formal |
After the final deadline | Formal recovery: demand letter, complaint, collections or small claims | Letter, legal process | Formal |
You don't have to follow this to the day. A long-standing client who's usually reliable may only need one nudge. A new client who has gone silent may need you to move faster. What matters is that you follow up on a schedule instead of waiting and hoping.
Choosing the right channel
Email: your default
Email is the best place to start because it leaves a written record of what you asked for and when. That record matters if you ever need to escalate. Keep each email short, put the invoice number in the subject line, and reattach the invoice every time so nobody has to search for it.
For wording at every stage, from the pre-due heads-up to the final reminder, use our friendly reminder email templates.
Phone: when emails go unanswered
If two emails get no response, pick up the phone. A call is harder to ignore, and in two minutes you'll usually learn the real reason for the delay: the invoice is stuck in approval, the contact left the company, or there's a cash-flow problem.
A simple call script:
"Hi [name], it's [your name] from [business]. Do you have a minute? I'm calling about invoice #[number] for [amount], which was due on [date]. I wanted to check that it reached you and see if anything is holding it up."
Then listen. If they promise to pay, agree a specific date ("So I can expect it by Friday the 14th?"). After the call, send a short email confirming what you agreed. That turns a verbal promise into a written one.
Text or chat: for clients you already talk to that way
If you normally talk to a client on Slack, WhatsApp or by text, a short message there is fine, especially as a nudge alongside an email. Keep it light and point to the email for details:
"Hi [name], quick one: invoice #[number] ([amount]) was due on [date]. I've re-sent it by email with the payment link. Thanks!"
Don't use chat for your final notice. Formal steps belong in email or a letter.
Letter: for the final notice
A formal letter (or a PDF letter attached to an email) signals that you're serious. It's the right format for a final demand that states the amount, the deadline and what you'll do next. In the UK, if your client is an individual or a sole trader, the Pre-Action Protocol for Debt Claims expects you to send a letter of claim and give them 30 days to reply before you start court proceedings.
How to escalate when reminders don't work
Step 1: Make paying easy and talk about the problem
If the client says they can't pay right now, a payment plan often gets you more, sooner, than a standoff. Agree on amounts and dates, and confirm the plan in writing.
If the client disputes the work, deal with that directly. Ask exactly what they're unhappy with. Paying for the undisputed part while you resolve the rest is a reasonable compromise.
Step 2: Apply late fees, if you're entitled to them
If your contract includes a late fee, now is the time to apply it. Use the late fee calculator to get the exact amount, and add it on a new or updated invoice with a clear explanation.
If there's no late fee in your contract, the law may still give you options:
UK: If the debt is between businesses, you can charge statutory interest at 8% plus the Bank of England base rate and claim fixed compensation of £40 (debts under £1,000), £70 (£1,000 to £9,999.99) or £100 (£10,000 or more). If you didn't agree a payment date, payment counts as late 30 days after the customer received the invoice or you delivered the work, whichever is later.
EU: Under the Late Payment Directive, business-to-business payment terms are capped at 60 days unless expressly agreed and not grossly unfair, with a 30-day default if no term was agreed. Statutory interest is the reference rate plus at least 8 percentage points, plus at least €40 in recovery costs. Each country implements this in its own law.
US: Late fee and interest rules depend on your state and your contract. The safest approach is to agree on a late fee upfront and show it on every invoice.
Step 3: Pause work
If you're still working for a client who isn't paying, it's reasonable to pause until the overdue invoice is settled. Check that your contract allows it, then say so in writing: "I'll resume work on [project] as soon as invoice #[number] is paid."
Step 4: Send a final notice
Your final notice should include the invoice number, original due date, amount owed (including any late fees you're entitled to), a firm deadline, how to pay, and exactly what you'll do if the deadline passes. Only state consequences you're prepared to follow through on.
Step 5: Use formal options
If the final deadline passes, you have several routes. Which one makes sense depends on the amount, where you and the client are, and how much time you want to spend.
Freelancer protection laws (New York). In New York City and, since August 28, 2024, across New York State, the Freelance Isn't Free Act requires a written contract for freelance work worth $800 or more (counting all work for the same client over 120 days), requires payment by the agreed date (or within 30 days of completion if none was set) and bans retaliation for asserting these rights. NYC freelancers can get help from the city's Department of Consumer and Worker Protection; the state law is enforced by the New York Attorney General.
Small claims court. In the US, small claims court lets you sue for smaller amounts without a lawyer. Limits and fees vary by state, so check your local court's website. In England and Wales, claims up to £10,000 normally go to the small claims track, and you can start one online.
Collection agency. An agency chases the debt for you, usually for a share of what it recovers. It can make sense for larger amounts when you'd rather not handle it yourself.
A lawyer's demand letter. For larger debts, a letter from a lawyer often prompts payment without going further.
For a client who simply never pays, it can also be worth weighing the cost in time against the amount owed. Sometimes the best outcome is to stop working with them and move on.
Do's and don'ts
Do:
Agree on payment terms, due dates and late fees in writing before you start.
Follow up on a schedule, not when you happen to remember.
Include the invoice number, amount, due date and a payment link in every reminder.
Confirm every phone conversation with a short email.
Keep records of every invoice, reminder and reply.
Don't:
Be aggressive, sarcastic or accusatory.
Accept vague promises ("soon," "next week") without a specific date.
Threaten consequences you won't actually follow through on.
Post about a non-paying client publicly. It rarely gets you paid and can create legal risk.
Let an unpaid invoice slide for months. The older it gets, the harder it is to collect.
Prevent late payments next time
The best reminder is the one you never have to send.
Put terms in writing. Payment terms, due dates and late fees belong in your contract and on every invoice. See how to make an invoice for what to include.
Take a deposit on larger projects, so you're never owed the full amount.
Invoice promptly. Send the invoice as soon as the work or milestone is done, not weeks later.
Make paying effortless. A card payment link removes the "I'll do it when I'm at my desk" delay. The Stripe fee calculator shows what card payments cost you.
Know who pays. Ask for the accounts payable contact and any PO requirements upfront.
For more on getting paid reliably, see our guide to getting paid as a freelancer.
Keep track of who owes you
Following up on time is much easier when you can see which invoices are overdue at a glance. Onigiri shows every invoice as Draft, Sent, Overdue or Paid, so you know exactly who to follow up with. On the PRO plan, clients can pay by card, Apple Pay or Google Pay straight into your own Stripe account, and invoices paid by card are marked Paid automatically. Start for free, or make a one-off invoice with the free invoice generator.
