Invoice finance calculator

Use our handy invoice finance calculator to get an understanding of how much you could release from invoices owed to you.

Page written by Ian Hawkins. Last reviewed on May 14, 2025. Next review due April 6, 2027.

Read this article to me
£
.00
-%
-%

* Will be paid to you when your client has paid the invoice in full and within the agreed invoice term.

This calculator is intended for illustration purposes only and exact payment terms should be agreed with a lender before taking out a loan.

Your results

Advance amount

£- (-%)

Then

£-*

Estimated fees

£-

Get a quote

How do you calculate invoice finance payments?

Invoice finance is a type of financing where a business sells its outstanding invoices to a finance company in exchange for immediate payment. The finance company will typically pay a percentage of the value of the invoices upfront and then collect payment from the customers directly. The finance company will charge a fee for this service, which is typically calculated as a percentage of the value of the invoices.

To calculate invoice finance payments, you will need to consider the following factors:

  1. Invoice value: The total value of the invoices being financed.

  2. Advance rate: The percentage of the invoice value that the finance company will pay upfront. This is typically between 70% and 90% of the invoice value.

  3. Discount rate: The fee charged by the finance company for providing the invoice finance service. This is typically between 1% and 5% of the invoice value per month.

  4. Repayment term: The length of time over which the finance company will collect payment from the customers.

To calculate the invoice finance payments, you can use the following formula:

(Invoice value x advance rate) – (Invoice value x discount rate x repayment term)

For example, if you have £100,000 worth of invoices and the finance company is offering an advance rate of 80% and a discount rate of 3% per month for a repayment term of 90 days, the calculation would be:

(£100,000 x 0.8) – (£100,000 x 0.03 x 3) = £77,000

This means that the finance company would pay you £80,000 upfront, but would deduct £3,000 in fees for the 90-day period, leaving you with a total payment of £77,000.

Ready to grow your business?

Clever finance tips and the latest news

Delivered to your inbox monthly

Join the 110,000+ businesses just like yours getting the Swoop newsletter.

Free. No spam. Opt out whenever you like.

We work with world class partners to help us support businesses with finance

Swoop Finance Limited helps UK firms access business finance by working directly with businesses and their trusted advisors. We act as a credit broker, not a lender, and do not provide loans or finance products ourselves. We introduce applicants to a panel of lenders, equity funds, and grant agencies based on individual circumstances and creditworthiness.
Commission Disclosure: We typically receive a commission from the finance provider (either a fixed fee or a fixed percentage of the amount you receive) upon successful placement. Different providers pay different rates. For certain lenders, we may have influence over the interest rate, which can impact the total amount payable under your agreement.
Regulatory Information:

  • FCA: Authorised and regulated by the Financial Conduct Authority as a credit broker (FRN: 936513) and registered as an Account Information Services Provider (Ref: 833145).

  • ICO: Registered with the Information Commissioner’s Office (Ref: ZA600162); registration can be verified at ico.org.uk.

  • Company Details: Registered in England & Wales with Companies House (No. 11163382). Registered Address: The Stable Yard, Vicarage Road, Stony Stratford, Milton Keynes, MK11 1BN. VAT Number: 300080279.

Terms: All finance and quotes are subject to status, income, and terms and conditions. Applicants must be aged 18 or over. Guarantees and indemnities may be required. Please refer to our terms and conditions and our complaints procedure for further details.

© Swoop 2026

Looks like you're in . Go to our site to find relevant products for your country. Go to Swoop