How VAT-registered businesses should handle late payment charges

Chasing overdue invoices is a frustrating but necessary part of running a business. When a client pays late, UK law gives you the right to charge them statutory interest and a fixed compensation sum to cover your costs. However, for VAT-registered businesses, a common point of confusion arises: do you need to add VAT to these late payment charges? This article provides a clear, practical guide on the VAT treatment of statutory late payment fees and explains how to invoice for them correctly, ensuring you stay compliant with HMRC rules.

We'll cover the legal basis for these charges, the specific amounts you can claim, and the step-by-step process for creating a compliant invoice for interest and compensation. Understanding these rules is crucial for managing your cash flow and accounts receivable effectively without creating an accounting headache.

The Legal Right to Charge for Late Payment

In the UK, the right for businesses to charge other businesses for paying invoices late is enshrined in law. This isn't just something you can put in your terms and conditions; it's a statutory right.

The key piece of legislation is the Late Payment of Commercial Debts (Interest) Act 1998. This Act applies to the commercial supply of goods and services where there isn't a different, substantial provision for interest in your contract.

Key points of the Act include:

• It's for B2B transactions: The Act applies to transactions between businesses (including public sector bodies, sole traders, and freelancers). It does not apply to consumer credit agreements or invoices issued to individuals for non-business purposes.
• It's automatic: You don't need to have a clause in your terms and conditions to be able to use the Act's provisions (though it's good practice to mention it). The right is implied into your B2B contracts.
• Payment terms matter: If you've agreed on payment terms (e.g., 30 days), interest can be charged from the day after the payment was due. If you haven't agreed on any terms, the law sets a default period of 30 days from the date of the invoice or the delivery of goods/services (whichever is later).

This legislation gives you two tools to use against late-paying clients: statutory interest and a fixed compensation sum.

What You Can Legally Charge: Interest and Compensation

When an invoice becomes overdue, the Act allows you to claim two distinct amounts from the debtor. It's important to understand the difference between them.

Statutory Interest

This is a daily interest charge calculated on the overdue amount. The rate is set by the legislation and is designed to be high enough to act as a genuine deterrent to late payment.

The formula for statutory interest is: 8% + the Bank of England base rate.

• The Bank of England base rate is a variable figure. You must use the base rate that was in effect on the day the debt became overdue. This rate is reviewed periodically by the Bank of England, so you should always check the current rate for your calculations.
• You can calculate the annual interest first, then find the daily rate, and finally multiply it by the number of days the payment is late.

Example Calculation:

Let's say you have an overdue invoice for £2,000 (including VAT). The payment was due on 1st May and is now 60 days late. The Bank of England base rate at the time was 5.25%.

1. Calculate the annual statutory interest rate: 8% + 5.25% = 13.25%
2. Calculate the annual interest on the debt: £2,000 x 13.25% = £265.00
3. Calculate the daily interest: £265.00 / 365 = £0.726 per day
4. Calculate the total interest owed: £0.726 x 60 days = £43.56

You are entitled to claim £43.56 in statutory interest.

Fixed Sum Compensation

In addition to the daily interest, the Act allows you to charge a one-off fixed compensation sum for each overdue invoice. This is intended to cover the administrative costs of recovering the debt. The amount you can claim depends on the size of the original invoice (including VAT).

The compensation bands are set by law and are as follows:

Invoice Amount (excl. interest)	Compensation You Can Charge
Up to £999.99	£40
£1,000 to £9,999.99	£70
£10,000 or more	£100

In our example of the £2,000 overdue invoice, you would be entitled to charge a fixed sum of £70 on top of the £43.56 in interest.

The Core Question: Do Late Payment Charges Attract VAT?

This is where many VAT-registered businesses get confused. You've correctly calculated the interest and compensation, but do you add 20% VAT on top of those figures?

The answer, according to HMRC's guidance, is clear: No, you do not charge VAT on statutory interest or fixed compensation for late payment.

These charges are considered by HMRC to be "outside the scope of VAT". The reasoning is that they are not payment for a supply of goods or services. Instead, they are compensation (or 'damages') for a breach of contract—the contract being your agreement that the client would pay you on time.

When you originally issued your invoice, you charged VAT on the goods or services you supplied. The late payment charge is a separate penalty for the client's failure to meet their payment obligation. It's not a further supply, so it doesn't attract VAT.

This is a crucial point. If you were to incorrectly add VAT to these charges, you would be overcharging your client and would have to account for that VAT to HMRC, even though it wasn't legally due. This complicates your VAT returns and can cause disputes with your client.

How to Correctly Invoice for Late Payment Charges

Because these charges are outside the scope of VAT and separate from the original supply, it is vital to invoice for them correctly to keep your records clean.

Best Practice: Issue a Separate Invoice

Do not simply add the interest and compensation to your original invoice. The original invoice represents the value of the goods or services supplied and has its own VAT calculation. Amending it can create confusion for both your and your client's accounting.

The best practice is to issue a new, separate invoice specifically for the late payment charges. This creates a clean paper trail and makes the nature of the charge unambiguous.

What to Include on a Late Payment Charge Invoice

Your invoice for statutory late payment charges should be clear, professional, and contain all the necessary information.

Here’s a checklist of what to include:

1. Your Company Details: Your business name, address, and contact information.
2. Client's Details: Their business name and address.
3. A Clear Title: Use a title like "Late Payment Charges" or "Statutory Interest and Compensation Invoice".
4. Invoice Number and Date: A unique invoice number for your records and the date you are issuing it.
5. Reference to the Original Invoice: This is essential. Clearly state "Relating to overdue Invoice [Original Invoice Number]".
6. A Detailed Breakdown of Charges: Don't just put a single figure. Show your workings.
   • Line 1: Statutory Interest. Describe how you calculated it. For example: "Statutory interest on £2,000.00 for 60 days (1st May to 29th June) at 13.25% per annum."
   • Line 2: Fixed Sum Compensation. Describe the charge clearly. For example: "Statutory compensation for late payment of an invoice between £1,000 and £10,000."
7. The VAT Amount: This is the most important part. You must clearly show that there is no VAT. State "VAT: £0.00". It's also good practice to add a note such as "Charges are outside the scope of VAT".
8. Total Amount Due: The sum of the interest and compensation.
9. Payment Terms: State the payment terms for this new invoice (e.g., "Due within 7 days").

By creating a separate, detailed invoice, you provide the client with a transparent and legally sound document that is easy for both parties to process.

Accounting for Late Payment Charges in Your Books

Once you've issued the invoice (and hopefully been paid), you need to account for it correctly.

Since the income is not from your primary trading activity and is outside the scope of VAT, you should not record it against your normal 'Sales' or 'Revenue' accounts. Doing so would distort your sales figures and could cause issues with your VAT return reconciliation.

Instead, you should post the income to a separate nominal ledger account in your accounting software (like Xero, QuickBooks, Sage, or FreeAgent). Good options for this account would be:

• 'Other Income'
• 'Interest Received'
• Or a custom account named 'Late Payment Charges Received'

When you create the invoice in your software, make sure you use the correct tax rate. All major accounting platforms have a specific tax rate for transactions that are not subject to VAT. This is usually called 'No VAT' or 'Outside the Scope of VAT'. Using this rate ensures the amount does not appear on your VAT return.

Important Tax Note: While this income is outside the scope of VAT, it is not tax-free. It still counts as taxable income for your business. It must be included in your profit and loss account and will be subject to Corporation Tax (for limited companies) or Income Tax (for sole traders).

The Practicalities: Should You Always Charge for Late Payment?

Just because you have the legal right to charge interest and compensation doesn't mean you must do it every single time an invoice is a day late. A heavy-handed approach can sometimes damage a good client relationship.

A more strategic approach is often better:

1. Set the Expectation: Include a clause in your terms and conditions that you reserve the right to charge statutory interest and compensation on overdue accounts. This sets a professional tone from the start.
2. Use It as a Deterrent: Your automated payment reminder sequence should escalate in tone. A friendly reminder can be followed by a firmer one that mentions your right to add statutory charges if payment is not made promptly. This threat alone is often enough to prompt payment.
3. Be Selective: You might choose to enforce the charges only for serial late payers, for clients who are ignoring all communication, or when the overdue amount is significant and causing you cash flow problems. For a long-standing, valuable client who has made a one-off mistake, a polite phone call is often a better first step.

The key is to have a consistent credit control process. Before you even get to the stage of levying charges, a consistent and automated chasing process can significantly reduce the number of overdue invoices in the first place. For instance, a tool like InvoiceReminder can handle this escalation for you, sending out polite-but-firm reminders on a schedule you define, saving you the manual effort and ensuring no overdue invoice is forgotten.

Frequently Asked Questions

Is statutory interest on late payments taxable?

Yes, but not for VAT. The income you receive from statutory interest and compensation is outside the scope of VAT. However, it is considered taxable income for your business and must be declared on your tax return, where it will be subject to either Corporation Tax or Income Tax depending on your business structure.

Can I charge late payment fees to consumers (B2C)?

No. The Late Payment of Commercial Debts (Interest) Act 1998 only applies to business-to-business (B2B) transactions. You cannot use it to charge statutory interest or compensation to individual consumers for personal purchases. Any late payment charges in B2C transactions would need to be explicitly outlined in your consumer contract terms and must be fair and reasonable.

What is the current Bank of England base rate for calculating interest?

The Bank of England base rate can change throughout the year. To calculate statutory interest correctly, you must use the rate that was in effect for the six-month period in which the invoice became overdue. You can always find the current and historic rates on the Bank of England's official website. Do not guess or use an old rate.

Do I have to issue a separate invoice for late payment charges?

It is strongly recommended. Creating a new, separate invoice for late payment charges keeps your accounting clean. It clearly separates the compensatory charge (which is outside the scope of VAT) from the original invoice for goods or services (which includes VAT). This avoids confusion and potential errors in your VAT returns.

Can a client refuse to pay statutory interest?

A client can refuse to pay, but you have a legal right to the money under UK law for B2B debts. If they refuse after you have invoiced them for it, your next step would be to send a final demand (a letter before action) and then, if necessary, pursue the debt through the small claims court. You must weigh the amount owed against the time and potential cost of taking legal action.

What if my own contract specifies a different late payment fee?

If your contract includes a "substantial remedy" for late payment (a different interest rate or fee structure), that term may take precedence over the statutory provisions. However, the VAT treatment is generally the same: if the charge is genuinely compensation for breach of contract, it remains outside the scope of VAT. If your contractual term is complex, it's wise to get advice from your accountant.

Automate Your Invoice Chasing and Get Paid Faster

Consistently following up on overdue invoices is the first and most important step in getting paid on time and reducing the need to charge interest at all. Manually tracking and chasing every invoice is time-consuming and prone to error, especially as your business grows.

InvoiceReminder helps UK small businesses, freelancers, and accountancy practices automate their credit control. By connecting to your accounting software like Xero, QuickBooks, Sage, or FreeAgent, it automatically sends scheduled reminder emails based on rules you control. You can set up a friendly nudge before the due date, a firm reminder the day it becomes overdue, and a final notice a week later, all without lifting a finger. The platform's Free plan currently includes unlimited email reminders at no cost, with no card required to sign up. InvoiceReminder is built by the team behind WeCovr, which has arranged over 1,000,000 insurance policies in the UK.