You can use this Late payment interest calculator to figure out what the cost of making your monthly repayments late will cost you in future interest repayments.

Date payment became overdue (dd/mm/yyyy)
Date of payment (dd/mm/yyyy)
Invoice value
Reference rate of Interest
% standard value
Statutory Rate of Interest
% standard value


If you need financial advice and you live in the UK then you could contact the Money Advice service over the phone or via chat for impartial advice.

You can also contact the debt charity “Step Change” if you are in debt and need help.

John has 22 years of experience in financial services. This spans across financial research, financial services (As a qualified mortgage broker and underwriter), financial trading and sales at global investment banks. While working as a publishing research analyst, he covered European bank credit and advised institutional clients on investment strategies at both JP Morgan and Societe Generale. John has passed all three levels of the CFA (Chartered Financial Analyst) programme.