UK VAT Early Settlement Discount or PPD New Rules

Understanding UK VAT Early Settlement Discount (Prompt Payment Discount) Rules

This article, last checked and updated July 2025 (see this), explores the rules around VAT and early settlement discounts, also known as prompt payment discounts (PPD), in the UK. The approach to VAT on early payment discounts changed significantly from 1st April 2015. Below, you’ll find a breakdown of the current and previous rules, practical examples, and guidance on applying these in your business.

Current UK VAT Rules for Early Settlement Discounts (From 1 April 2015)

Since 1st April 2015, the way VAT is calculated on invoices offering early settlement discounts has changed. Now, VAT must be accounted for on the actual amount paid by the customer, rather than the amount originally invoiced.

• If a customer pays early and claims the discount, VAT is calculated on the reduced (discounted) amount.
• If the customer pays the full invoice amount (does not claim the discount), VAT is calculated on the full amount.

For official details, refer to HMRC’s guidance:
VAT Prompt Payment Discounts.

How to Apply VAT on Early Settlement Discounts: Example

Scenario	Net Amount	VAT (20%)	Total Payable
Invoice without early payment	£100	£20	£120
Invoice with 10% early payment discount applied	£90	£18	£108

Case Study: A supplier issues an invoice for £100 plus VAT (20%), totaling £120. An early payment discount of 10% is offered if payment is made within 14 days. If the customer pays early, they pay £108 (£90 net + £18 VAT). If they pay after 14 days, the full £120 is due.

• The supplier must ensure the correct VAT is reflected based on what the customer actually pays.
• Both supplier and customer records must match, ensuring compliance in case of VAT inspections.

Practical Implications for Businesses

• Invoices must be clear about when and how discounts apply.
• If a discount is taken, a credit note or adjusted invoice may be required to reflect the actual VAT due.
• Accounting systems should be updated to handle this scenario automatically.

Comparing Old and New VAT Rules for Prompt Payment Discounts

Rule	Before April 2015	After April 2015
VAT Calculation Basis	On discounted amount, regardless of payment made	On amount actually paid
Invoice Adjustment Needed?	Not required if discount not taken	Adjustment or credit note needed if discount is taken

Why the Change?

The change ensures VAT is only paid on the actual amount received, aligning with EU VAT directives and closing potential loopholes where VAT could be understated if discounts were not taken up.

Original VAT Rules for Early Settlement Discounts (Pre-April 2015)

Prior to April 2015, VAT was calculated differently. If you allowed a prompt payment discount, you would calculate VAT on the discounted amount, whether or not the customer took the discount.

Example Calculation (Pre-2015)

• Invoice amount: £10.00
• 10% early settlement discount: £1.00
• VAT applied to £9.00 at 20%: £1.80
• Total invoice: £11.80

If the customer did not take the discount and paid the full £10.00, the VAT still only applied to the discounted amount (£9.00), potentially leading to discrepancies.

Special Cases: Instalments and Other Discounts

• Instalments: VAT had to be calculated on the actual payment amount for each instalment.
• Unconditional Discounts: VAT applied to the discounted amount, provided the customer paid the lower price.
• Contingent Discounts: If the discount depended on a future event (e.g., payment by a certain date), VAT was calculated on the actual amount paid, with adjustments required if the discount was taken.

International Perspective

It is important to note that these VAT rules are specific to the UK. Most other EU countries, and countries like the USA, have different approaches to sales tax and VAT. The USA typically uses sales tax rather than VAT, but discussions about adopting VAT have occurred.

Best Practices and Further Reading

• Always check for updates on VAT rules via the HMRC website.
• Ensure your accounting software is up to date with current VAT regulations.
• Consult a qualified accountant or tax adviser for complex scenarios.

For more practical advice on managing your accounts, see our guide: Bookkeeping for Beginners.