If you run a small business in the UK, you already know this problem too well. You have completed the work, sent the invoice and done your part. Yet the money still has not reached your bank account.
For many small businesses, this is more than an annoying admin issue. A few unpaid invoices can make it harder to pay suppliers, wages, tax bills and other running costs on time.
So, what can you actually do about small business late payments? This article walks through the direct steps to handle clients who take forever to pay.
If you’re already struggling with unpaid invoices, our small business accountants can also help you improve your invoicing systems and day-to-day finances.
What Counts as a Late Payment For My Small Business?
A payment is late the moment it goes past whatever date you and your client agreed on. This sounds pretty obvious. But still, a surprising number of business owners don’t write this down clearly. Usually, that is exactly where the trouble starts.
If there is no agreed date in your contract or invoice terms, the law defaults to 30 days after the customer receives the goods, service, or the invoice itself, whichever is later.
This means that even a handshake deal has a legal payment date attached to it. This is worth remembering. Because when you face small business late payments, you might struggle to cover your VAT bill, pay your staff, or buy essential stock to run your small business.
How Can I Prevent Small Business Late Payments Before They Happen?
The easiest way to deal with small business late payments is to prevent them from happening in the first place.
1. Use Written Contracts
Every project should have agreed terms. These terms should cover payment deadlines, scope of work, payment methods, and consequences of late payments. Remember never to rely on verbal arrangements if you want to avoid small business late payments.
2. Set Clear Payment Terms
A surprising number of businesses never specify exactly when payment is due. Include terms such as:
- Payment due within 7 days
- Payment due within 14 days
- Payment due within 30 days
The clearer you set the expectation, the better it will be for your business.
3. Invoice Immediately
Don’t wait until the end of the month. Send invoices as soon as work is completed. This alone can significantly reduce small business late payments.
4. Request Deposits
For larger projects, consider requesting 25% upfront, 50% upfront, stage payments, or monthly retainers. Upfront payments reduce the risk of small business late payments. As a result, you will improve your business cash flow.
It also helps to check who actually handles invoices at the customer’s business. The person who orders your services may not be the person who processes payments.
What Are My Legal Rights When A Client Pays Late?
UK law gives you strong protections when clients refuse to pay on time. Under the Late Payment of Commercial Debts Act 1998, you have a legal right to add interest and recovery costs as soon as a payment is late.
Yes, you’re entitled to claim statutory interest on any overdue commercial invoice, plus a fixed compensation fee. You do not even need to have this written into your contract. It’s automatic.
| What you can claim | Current 2026/27 figure |
| Statutory interest rate | 8% above the Bank of England base rate (currently 3.75%, so 11.75% total) |
| Compensation for debts up to £999.99 | £40 |
| Compensation for debts £1,000 to £9,999.99 | £70 |
| Compensation for debts £10,000 or more | £100 |
Know that the compensation is per invoice. It is not per client relationship. If a client is persistently late across several invoices, it does add up. Ultimately, it gives you real leverage.
Can I Charge Interest On Late Payments?
In many business-to-business situations, yes. Statutory interest may be available on qualifying commercial debts at 8% above the Bank of England base rate.
Some businesses choose not to charge interest immediately because they want to preserve customer relationships.
Others include late payment charges in their terms from the outset.
The right approach often depends on the customer relationship and the amount involved.
Can The Government Help Me Settle An Invoice Dispute?
Yes, you can get free support from the government. The Office of the Small Business Commissioner is a specific body set up to tackle small business late payments across the UK.
They can investigate large companies that choose to mistreat their smaller suppliers. If a corporate giant is ignoring your phone calls, you can launch a complaint through their official portal.
They will investigate the issue and adjudicate the dispute through a dedicated scheme outside the court process. In serious cases, they can even issue severe financial penalties to persistent late payers. This often resolves the issue without you needing to spend thousands on expensive court lawyers.
How Can I Chase An Unpaid Invoice Without Losing The Client?
Start with a friendly reminder a few days before the due date, not after. A short email works fine. Once it’s overdue, follow up promptly rather than letting weeks slide by, and keep a paper trail of every message. If a phone call feels more natural for that client, use it. But always confirm what was agreed in writing afterwards.
How Accotax Can Help
If small business late payments are becoming a regular problem, having a clear set of accounts can help you see the issue much earlier.
At Accotax, our team of small business accountants sets up smart accounting software that automatically chases your unpaid invoices so you do not have to. We review your billing processes to keep your cash flowing smoothly every single month.
We can also help you stay on top of VAT, tax and other financial deadlines while you focus on getting paid and running the business.
Get in touch today, and we’ll talk through your situation properly before anything gets set up, so you’re not paying for the wrong solution.
The Bottom Line
Most business owners will deal with small business late payments at some stage. The real difference is how quickly those issues are identified and managed.
You must know your legal rights.
Check who you’re dealing with before you sign anything, and make sure to never let an overdue invoice sit unchased for weeks out of politeness.
Disclaimer: All the information provided in this article on “How Small Businesses Can Deal With Late Payments” including all the texts and graphics, is general in nature. It does not intend to disregard any of the professional advice.
