Late payments cost UK small businesses billions of pounds every year. Most business owners know the frustration: you've done the work, you've sent the invoice, and now you're waiting. Sometimes weeks. These are the practical things that actually make a difference.
Invoice immediately
The most effective thing you can do is invoice as soon as the work is done. Or in some cases, before. Every day you wait before sending an invoice is a day you're adding to the time before you get paid.
A lot of small businesses batch their invoicing at the end of the month. It's tidier, but it means a job you finished on the 3rd might not get invoiced until the 31st, and if your terms are 30 days, you're now waiting 60 days to get paid for something you did six weeks ago.
According to the Federation of Small Businesses, late payment is one of the leading causes of small business insolvency in the UK. The average SME is owed over £25,000 in overdue invoices at any given time.
Get your invoice to the right person
This sounds obvious but it's where a lot of invoices disappear. Bigger clients have a specific accounts payable department or email address. If your invoice goes to the person you work with day to day rather than to accounts payable, it might sit unread for weeks before anyone acts on it.
Ask at the start of a project: who do invoices go to, and what format do they need to be in? Some larger businesses require purchase order numbers on every invoice. Miss that and the invoice gets rejected outright.
Make it easy to pay
Include your bank details on every invoice. Sort code and account number, clearly formatted. If you accept card payments, include a payment link. The fewer steps between a client deciding to pay and actually paying, the faster it happens.
If you have the option to set up a direct debit arrangement for repeat clients, use it. Getting paid automatically on the due date, without anyone having to action anything, removes the biggest source of delay.
Send a reminder before the due date
A brief, friendly email two or three days before the due date catches a lot of problems. Something like: just a reminder that invoice 2025-038 is due on Friday, please let me know if you have any questions. That's it. It's not chasing; it's helpful.
Many businesses wait until after the due date to send any communication, which means by the time they chase, the invoice is already late. Get ahead of it.
Follow up calmly but promptly
When an invoice is overdue, follow up within one or two days. Don't wait a week. A short email is fine: Invoice 2025-038 was due on Friday. Could you let me know when this will be processed?
If you don't get a response after a few days, call. Email is easy to ignore; a phone call is harder to avoid. Keep the tone professional. Most late payments are not deliberate.
Automated payment reminders
If you're handling more than a handful of invoices a month, setting up automated reminders is worth doing. Most invoicing software lets you configure a sequence: a reminder before the due date, one on the day, and one or two overdue notices after.
WeekOne includes automated payment reminders as part of its invoicing system, so you can set the sequence once and let it run. You still get paid faster without having to remember to chase every invoice manually.
Use deposit invoices for larger projects
For any project over a few hundred pounds, ask for a deposit upfront. Thirty or fifty percent is standard for most service businesses. It's not unusual or aggressive; clients who push back hard on deposits are often the same ones who are slow to pay the final invoice.
A deposit also gives you some protection if a project gets cancelled mid-way. It's a basic piece of financial protection that too many small businesses don't use.