VAT Record Keeping Requirements: Invoice Types and Documentation Rules

If your business is VAT-registered, HMRC requires you to keep detailed records of all VAT charged and paid. The rules are strict -- particularly around invoice requirements -- and mistakes can result in denied input tax claims. This guide covers the three types of VAT invoices, what documentation you need, and how Making Tax Digital affects VAT record keeping.

Three Types of VAT Invoices

1. Full VAT Invoice

Required for most business-to-business transactions. Must include:

• A unique sequential invoice number
• Seller's name, address, and VAT registration number
• Buyer's name and address
• Date of supply (or tax point)
• Description of goods or services
• Unit price excluding VAT
• VAT rate applied to each item
• Total VAT amount
• Total amount including VAT

2. Simplified VAT Invoice

Permitted for transactions of £250 or less (including VAT). Only requires:

• Seller's name, address, and VAT number
• Date of supply
• Description of goods or services
• Total amount including VAT
• VAT rate charged

The buyer's details are not required on simplified invoices.

3. Modified VAT Invoice

For retail transactions over £250, if the customer asks for a VAT invoice and agrees to this format. Similar to a full invoice but shows VAT-inclusive rather than VAT-exclusive values for each item, with the VAT-inclusive total, the VAT and the VAT-exclusive total shown at the foot.

Common VAT Receipt Mistakes

• A plain card slip is not a VAT invoice on its own. A retailer can turn the card voucher into a simplified VAT invoice (for £250 or less) by adding its VAT number, the VAT rate and a description of what you bought
• Missing VAT registration number -- every VAT invoice, including a simplified one for £250 or less, must show the supplier's VAT number. Without a valid invoice you need HMRC to accept alternative evidence, apart from a few purchases of £25 or less such as car parking, single tolls and phone calls
• Not separating VAT on invoices -- for full invoices, the VAT amount must be shown separately
• Keeping only bank statements -- a bank transaction does not contain the detail required for a VAT claim

VAT Record Retention

VAT records must be kept for at least 6 years. This includes:

• All VAT invoices issued and received
• Credit and debit notes
• Import and export documentation
• VAT account summaries
• Records of any VAT adjustments

MTD for VAT

Making Tax Digital for VAT has been mandatory for all VAT-registered businesses since April 2022. Under MTD for VAT, you must keep digital records that include the VAT rate applied to each transaction and submit VAT returns using compatible software. The same digital links requirement applies -- no manual re-keying between systems.

If you are also self-employed with income above the ITSA thresholds, you will need to comply with both MTD for Income Tax and MTD for VAT.

Managing VAT Receipts

An AI receipt scanner captures VAT details (including the VAT registration number and tax breakdown) automatically when you scan a receipt or invoice. All documents can be stored for 10+ years, exceeding HMRC's 6-year requirement. Connect your email to automatically capture digital invoices from suppliers.

For general record keeping rules, see HMRC record keeping requirements. For a complete expense guide, see self-employed expenses UK.