Chasing unpaid invoices politely is a workflow, not a mood. Write your chasing standard once: tone rules, three scheduled nudges, and the day you escalate. Let your invoicing software send the scheduled nudges in your wording, keep a person on anything unusual, and never apologise for asking to be paid.
Here is the fear, named first. You did the work, the money is late, and the email you keep not sending is costing you sleep as well as cash flow, because chasing feels like risking the relationship. So you draft it at 11pm, soften it, and delete it. Meanwhile the invoice ages.
Asking to be paid for finished work is not rude. The standard on this page makes sure it never sounds rude either, then takes the sending out of your hands entirely.
On this page: The polite way · The standard · What to say · Automate it · When to escalate · What breaks · In short · FAQ
What is the polite way to chase an unpaid invoice?
Chasing an invoice politely means stating the facts on a schedule: the invoice number, the amount, the due date and the payment link, with one clear ask and no apology.
Polite is a system property, not a personality trait. You do not need to be a smoother writer or a braver person; you need four habits written down, and section 01 of the standard below holds them. The operating assumption is that most late payments are admin, not malice, which is why the first nudge reads as a favour, not an accusation.
A plumber invoices on 30-day terms and chases from the van between jobs. A freelance designer worries the chase will cost her the client. The job eats evenings, cash flow, and the nerve it takes to send nudge two. The fix is not courage. It is a page.
What should your chasing procedure include?
A chasing standard is your invoice-chasing procedure on one page: the tone rules, the nudge schedule, the day you escalate, and the things you never do. If you have searched for a procedure for chasing unpaid invoices, this is it, whole and free, nothing held back for a download or a demo.
Here is the full standard, written from my own published method and generic good practice; no client data anywhere in it.
FIELD NOTES / FREE TOOL
The Polite Chasing Standard
01 TONE RULES
- Assume they forgot. Most late payments are admin, not malice. The first nudge is a favour, not an accusation.
- State facts, not feelings. Invoice number, amount, due date, payment link. Nothing else needs to be in the email.
- One ask per email. "Could you settle this by Friday?" beats three paragraphs of throat-clearing.
- Never apologise for asking. You did the work. "Sorry to bother you" trains people to pay you last.
- Write like you speak. If you would not say it across a table, do not put it in the email.
02 THE THREE-NUDGE SCHEDULE
The three-nudge schedule is a heads-up the day after the due date, a firmer reminder at day seven, and a direct ask at day fourteen, each in your own words.
| WHEN | NUDGE | WHAT IT SAYS |
|---|---|---|
| Day 1 overdue | The heads-up | Friendly and brief. "This one slipped past its due date, here is the link." Assume good faith. No pressure. |
| Day 7 | The reminder | Same facts, firmer frame. Restate the amount and the original due date. Ask for a payment date, not just payment. |
| Day 14 | The direct ask | Plain and unmistakable. Name the next step and the date it happens. Still polite. Still no threats. |
Pick your own days if these do not fit your trade, then keep them; the schedule only works if it never depends on how brave you feel that morning. Xero and QuickBooks both have these reminders built in.
03 THE ESCALATION POINT
Decide the day the emails stop and something else starts, and write it down before you need it. After the third nudge this is no longer a reminder problem, so stop sending reminders. Escalation usually means a phone call from you personally, then a final letter naming interest or a collections step if your terms allow one. The final email announces the next step plainly, with no drama and no apology, and then you follow through on the date you named. An escalation you do not act on is just a fourth nudge.
04 THE NEVER-DO LIST
- Never threaten in a nudge. Threats live at the escalation point or nowhere.
- Never guess the numbers. Copy the amount and due date from the invoice every time.
- Never chase twice in one week. Trust the schedule you set.
- Never send words that are not yours. Template tone reads as template tone.
- Never vent in writing. The email may be read by their accountant, or a judge.
- Never let software send anything you have not read in its final wording first.
05 YOUR VOICE
WRITE LIKE "Hi Sam. Invoice 214 for €450 was due last Friday. Here is the link if it slipped past you."
NEVER LIKE "We regret to inform you that your account is in arrears and prompt settlement is required."
The whole standard fits on one A4 page you can pin above the desk, with write-in lines for your own nudge wording, days and sign-off. The fill-in version is free; tell me where to send it. It costs your email address, which I use to send the file.
Here is how to write the standard itself, step by step; this post is that method applied to one job.
What do you say when chasing payment?
When you chase payment, you say four things: the invoice number, the amount, the original due date and the payment link, and then you make one specific ask. Everything else is padding, and padding is where the awkwardness lives.
A polite payment reminder email is those four facts plus the ask, and nothing else. The wording layer is where most people go wrong, because they borrow it. Borrowed lines read as a form letter, and form letters are easy to ignore. Worse, they do not sound like the person who fitted the boiler or designed the brochure, so the relationship feels colder than it is.
Compare the version a human wrote: "Hi Sam. Invoice 214 for €450 was due last Friday. Here is the link if it slipped past you." Same facts. One ask. Reads like you. That is the whole trick, and it is why the fix is not a better template. It is writing your three nudges once, in your own voice, and reusing them forever. The 11pm redrafting ritual is gone for good.
How do you automate invoice reminders?
The fastest way to automate invoice reminders is the setting already built into Xero and QuickBooks: switch it on, paste in your approved wording, choose the send days. That is rung one of the ladder, and for most businesses it is the whole build. No code, no new subscription, nothing to learn. The schedule now runs without courage.
The honest ladder, bottom rung first:
- Switch on the reminders you already pay for. Xero and QuickBooks both send automatic invoice reminders on the days you choose, in the wording you give them. Paste in your three nudges from the standard and the scheduled chasing is done.
- Draft the wording with a free AI chat. Paste the standard into the free tier of Claude or ChatGPT and ask for your three nudges, plus drafts of the awkward replies: the part-payment offer, the "can you resend the invoice" message. Edit until it sounds like you.
- Save the standard once. Put it in the tool's saved or project instructions so every future chasing draft starts from your rules without pasting.
- Only then consider an agent. An AI agent can watch the ledger and draft the chases and replies under the standard. Drafts only, with you on the send button for anything beyond the scheduled nudges. This is the rung people mean when they search for AI invoice chasing. Most businesses genuinely do not need it.
The scheduled nudges are fixed steps, so they belong to plain automation, not AI. AI earns its keep on the judgement moments: the reply to nudge two, the part-payment offer, the awkward regular. And nothing it drafts sends without a person reading it; that rule is in the standard.
On cost: rung one comes with the invoicing software you already pay for, rungs two and three are free or a modest monthly plan, and rung four is a build priced like any small project. I am not quoting figures, because prices move and guessed numbers help nobody. If you want the real shape of it, here is what one AI agent actually costs.
When should you stop chasing and escalate?
The escalation point is the day the emails stop and something else starts, decided and written down before you need it. After nudge three, more reminders just teach the client that your reminders can be ignored. So the standard names a day, and on that day the pattern changes: you phone them yourself, then a final letter names the next step and its date.
UK law is quietly on your side. If another business pays you late, you can usually charge statutory interest at 8% plus the Bank of England base rate, plus a fixed sum towards recovery costs; the rules are on gov.uk, linked in the references below and checked on 4 August 2026. And in England and Wales the right to bring a claim lasts six years. Mentioning interest in the final letter, factually and without heat, is often the line that gets the transfer made.
One line to hold: an escalation you do not act on is just a fourth nudge. Name the day, then keep it. To be plain, this is general information, not legal advice; if a specific debt is heading to court, speak to a solicitor first.
What breaks, even with a polite chasing standard?
A dispute is not a late payment: the moment a client questions the work, reminders pause and a human conversation starts. A nudge landing on someone who thinks the invoice is wrong turns a query into a grievance. The standard schedules reminders; it does not schedule listening.
The wrong inbox breaks it too. In bigger firms, bills go to accounts, not to the person who hired you. If nudge two is landing on your contact instead of their bookkeeper, the schedule is running, but at the wrong person. Fix the address, not the wording.
Then there is the client who always pays on nudge three. The schedule still worked; it just worked at their speed. And the seething you used to do is now done by a setting, free of charge.
Last, AI drafting the numbers wrong. It would if allowed to, which is why rule 04 exists: the amount and due date are copied from the invoice every time, and nothing sends unread.
Honest aside: if you would rather write the standard and have someone build the chasing agent around it, that is exactly what I build for people. The standard above plus the Xero setting is the free version, and it genuinely works.
In short
- Polite is a system, not a personality trait: facts, one ask, no apology.
- Write the standard once: tone rules, three nudges, the escalation day, the never-do list.
- Let the software you already pay for send the schedule in your wording.
- AI drafts the judgement moments only, and nothing sends without a person.
- Escalate on the day you named, or you have just written a fourth nudge.
Common questions
How long can you chase an unpaid invoice?
In England and Wales you generally have six years from the date payment fell due to bring a claim for an unpaid invoice, under the Limitation Act 1980. In practice your chasing standard escalates at day fourteen, years before the law stops you. This is general information, not legal advice; for a specific debt, speak to a solicitor.
Can you charge interest on a late invoice?
If another business pays you late, you can usually charge statutory interest at 8% plus the Bank of England base rate, plus a fixed sum towards recovery costs. The rules are on gov.uk under late commercial payments, checked 4 August 2026. Look up the current base rate before you work anything out. Most invoices get paid on the schedule long before interest comes into it.
How often should you chase an unpaid invoice?
On the schedule you wrote, and never twice in one week. The standard uses day one, day seven and day fourteen after the due date, then escalation. Adjust the days once to fit your trade, then keep them.
Is there software that chases invoices for you?
Your invoicing software already does the basics free: Xero and QuickBooks both send automatic invoice reminders on your schedule, in your wording. Dedicated invoice-chasing tools exist for businesses with high volume. Either way, the wording and the decision to escalate stay yours; that is what the standard is for.
Can AI chase invoices for you?
It can draft the chases and the awkward replies to your standard, in your voice. The scheduled nudges do not need AI at all; the reminder setting in your invoicing software sends those. Nothing beyond the schedule should send without a human reading it, and it never invents an amount and it never threatens.
References and further reading
This guide was written in August 2026, and the honest way to date it is to say so here rather than put a year in the title. Every page below was checked and loading on 4 August 2026.
- Late commercial payments: charging interest and debt recovery, GOV.UK. The statutory interest rate and fixed recovery costs behind the escalation section.
- Limitation Act 1980, section 5, legislation.gov.uk. The six-year limit for claims on an ordinary unpaid invoice.
- Turn invoice reminders on or off, Xero Central. The built-in reminder setting behind rung one.
- Send invoice reminders automatically or manually, QuickBooks UK. The QuickBooks version of the same setting.
I build one-job agents for a living, always Standard First, with a human gate anywhere a mistake would cost money or a relationship. If late invoices are your version of this job, grab the fill-in standard, or email me at ameera@asurekha.com and describe how chasing works in your business today. Plain words are fine.