Charging Interest on Late Bills

Cash is king – and that has never been truer than in the current recession. If you do have unpaid bills, remember that it is your money your customers are holding onto. You have a legal right to charge interest on unpaid bills for business clients and doing so produces two dividends:
  1. As your clients see their bill gradually mounting, it is a strong incentive to pay.  
  2. If your clients do delay paying, then at least you get some return on the hit to your cashflow. 
There is no need to even refer to your right to charge interest in your terms and conditions – under the Late Payment of Commercial Debts (Interest) Act 1988, the ability to charge interest at 8% above Bank of England Base Rate is automatically implied into your terms and conditions (unless you set your own interest rate on unpaid debts). You can charge 8% above Bank of England Base Rate, no matter how large or small the debt. However if you do set your own rate of interest, the statutory 8% above Bank of England base rate does not apply – so be careful your own rate is not too excessive or your client could challenge your own interest rate at Court.  

What is the rate of interest?

All you need to know is the Bank of England base rate on either June 30th or December 31st. If the debt arose sometime between July 1st and December 31st, the relevant  Bank of England base rate is the one valid on the previous June 30th. Similarly if the debt arose between January 1st and June 30th, the rate is the valid one on December 31st. 

When is the debt overdue?

You can begin charging interest 30 days after your supply of goods or services, or when the client received your invoice – whichever is later. You can however override that 30 day period by adding a clause to your own terms and conditions stating when interest becomes due, e.g. on receipt of your invoice. 

How to calculate your interest

This is straightforward. If, for example, you billed £100, and your invoice remained unpaid for 50 days, and the debt fell due on September 30th: 
  1. Check base rate on December 31st = 2%
  2. Add 8% = 10%
  3. Calculate how many days the bill was overdue = 50 days
  4. Calculate annual interest: £100 x 10% = £10
  5. Calculate daily interest: £10 divided by 365 days = £0.0273
  6. Calculate interest due to you: £0.027 x 50 days = £1.37 

For more advice on Debt Recovery, or to take advantage of our debt recovery service at  minimal cost – by writing a Solicitors' 7 day debt recovery letter for just £25 –  please contact our Debt Recovery Solicitors on 01980 622992 or email Debt Collection Solicitors 


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