Invoice chasing software for UK businesses
PaidUp reads what you're owed from Xero, QuickBooks, Sage or a spreadsheet, chases each overdue invoice by WhatsApp and email on a polite three-step schedule, deals with the replies, and stops as soon as it's paid.
£19 a month on its own · first week free · built into Remi Complete
The problem
You did the work. Now you're drafting the third "just following up" email and wondering how firm you can be without losing the client. PaidUp does the chasing for you (politely, on schedule and in your name) so the awkward part isn't yours any more.
How it chases
Each message is written for the channel (short on WhatsApp, a proper email by email) and gets firmer only as the invoice gets older. There are always at least six days between messages.
Examples with a made-up business. Change the 1 / 7 / 21 days to suit your terms.
When they reply
Most reminder tools send on a timer whatever happens. When a customer replies to PaidUp on WhatsApp or by text, it acts on what they said.
Reminders pause for five days and you get a task to check it against your records. It never marks an invoice paid on someone's word alone.
A dispute stops the chase on that invoice and is passed to you to sort out, no more reminders on a bill they're querying.
They get a few days' grace and a thank-you, then the chase picks up again if it's still outstanding.
Honoured straight away: no more reminders to that number by WhatsApp or text.
No data entry
Connect your accounts and PaidUp picks up what's overdue, who owes it and how to reach them, so it chases the right amount without you re-typing anything.
Automatic, never out of your hands
Stop all chasing at once (a sensitive month, a key client, a mistake in the books) and start again when you're ready.
Every invoice is checked again just before a message goes out, so a payment that lands mid-morning never gets one more reminder.
See exactly what went to whom, on which channel and when, useful if a client ever says they weren't told.
Your monthly summary shows how many chases went out and how much was paid after a chase.
Know your rights
If both you and your customer are businesses, the Late Payment of Commercial Debts (Interest) Act lets you charge interest and a fixed recovery sum on a late invoice, unless your contract already sets its own late-payment interest rate. It doesn't apply when your customer is a private individual.
| When is an invoice late? | On the date you agreed. If you never agreed one, 30 days after the customer gets the invoice (or after you deliver, if that's later). |
|---|---|
| Statutory interest | 8% a year above the Bank of England base rate. For debts that fall due July–December the base rate on 30 June is used, and for January–June the rate on 31 December. Bank Rate was 3.75% on 30 June 2026, so it's 11.75% a year for debts falling due July–December 2026. |
| Fixed recovery sum | £40 on a debt up to £999.99 · £70 on £1,000–£9,999.99 · £100 on £10,000 or more. Once per invoice, plus reasonable recovery costs on top. |
Worked example. A £2,400 invoice to another business is paid 30 days late.
Interest: £2,400 × 11.75% = £282 a year, ÷ 365 = 77p a day, × 30 days = £23.18. Fixed sum for a £1,000–£9,999.99 debt: £70. Total you could add: £93.18.
PaidUp's part: it chases the invoice you issued. It doesn't add interest or fees for you. Whether to claim them, and how you put it to a client, is your call.
The government introduced a Bill on late payment in the House of Lords on 19 May 2026. As of 1 October 2026 it is at third reading in the Lords and still has to go through the Commons, so none of this is law yet and no start date has been set. As introduced, it would:
Sources: gov.uk: late commercial payments, Late Payment of Commercial Debts (Interest) Act 1998, Bank of England Bank Rate. Checked 1 October 2026. This is a summary, not legal advice. Bill: Commercial Payments Bill [HL] on parliament.uk.
Pricing
£19/mo
PaidUp on its own, no receptionist needed
Want your calls answered too? Remi Complete includes PaidUp, or add PaidUp to any Remi plan. See all of Remi →
See it on your own line
Leave your details and we'll walk you through PaidUp on your own invoices, or, if you'd like your calls answered too, set up a live demo of Remi on your own number.
Prefer WhatsApp? Message us here →
Connect your accounts, check the schedule, and switch it on. Your first week is free.
Running an agency or consultancy? See Remi for agencies & consultants →
Questions
PaidUp is Remi's invoice chasing software for UK businesses. It reads your overdue invoices from Xero, QuickBooks, Sage, a Google Sheet or a CSV, chases each one by WhatsApp and email on a three-step schedule, and stops when it's paid. It costs £19 a month, with your first week free.
The first message assumes it's an oversight, and they only get firmer as the invoice gets older, with at least six days between messages. Replies are acted on: a dispute stops the chase, "I've paid" pauses it while you check, and STOP is honoured straight away.
Xero, QuickBooks and Sage connect directly. You can also use a Google Sheet or upload a CSV of invoices.
If both you and your customer are businesses, yes, unless your contract sets its own rate: statutory interest of 8% above the Bank of England base rate (11.75% a year for debts falling due July–December 2026), plus a fixed sum of £40, £70 or £100 depending on the size of the debt. PaidUp doesn't add these for you; whether to claim them is your decision.
Yes. PaidUp chases any overdue invoice that has a phone number or email address. The late-payment interest rules only apply between businesses, though.
£19 a month on its own, with your first week free. It's also built into Remi · Complete (£329 a month), and can be added to any Remi plan.
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