VAT Cash Accounting Scheme: Eligibility and Cash-Flow Trade-Offs for UK Businesses

If customers pay slowly, paying VAT before their invoices are settled can squeeze your working capital. The VAT Cash Accounting Scheme changes the timing: you normally account for VAT on sales when you receive payment and reclaim VAT on purchases when you pay suppliers. It does not reduce the VAT rate or make taxable sales exempt.

This October 2026 guide is for VAT-registered small businesses and independent consultants deciding whether the timing works for them. It is separate from VAT registration and the Flat Rate Scheme.

Who can join?

HMRC’s entry threshold is expected taxable turnover of £1.35 million or less over the next 12 months. Taxable turnover is not the same as profit, and VAT-exempt sales are excluded. You must already be VAT registered.

You cannot use the scheme if you use the Flat Rate Scheme, are behind with VAT returns or payments, or have committed a VAT offence in the previous 12 months. Check the full eligibility rules rather than assuming turnover alone qualifies you.

What changes in practice?

Imagine a consulting business issues a standard-rated invoice for £1,000 plus £200 VAT. Under cash accounting, the £200 output VAT is normally accounted for when the customer pays. If the business buys equipment for £500 plus £100 VAT, it normally reclaims that £100 only when it pays the supplier.

These are illustrative figures, not a promise of savings. The second half of the rule matters: delaying supplier payments also delays input VAT recovery. Businesses paid immediately but buying on credit can be worse off on timing.

Not every transaction follows the cash rule

HMRC lists exceptions, including certain credit arrangements, invoices with long payment terms and invoices issued in advance. Some Northern Ireland and customs transactions also need separate treatment. Domestic construction reverse-charge transactions have their own rules; do not automatically include them in the scheme.

A bookkeeper should flag exceptions instead of changing every VAT code to cash accounting without review.

Joining and leaving

You normally start at the beginning of a VAT accounting period and do not need to notify HMRC. You cannot apply the scheme retrospectively. Keep clear records of invoices, receipts, supplier payments and partial settlements.

HMRC’s leaving threshold is taxable turnover above £1.6 million, with detailed measurement and exit rules in Notice 731. Unpaid invoices are not forgotten when you leave: outstanding VAT must be dealt with. Some businesses can spread the transition over six months; others must account for it immediately. Have the exit calculation checked before switching methods.

A practical decision checklist

Are you eligible and up to date with VAT filings and payments?
How long do customers take to pay compared with your supplier terms?
How much input VAT do you reclaim on significant purchases?
Can your software match payments accurately to invoices?
What would outstanding VAT look like if you left the scheme?

Ask for a comparison using recent transactions, not just your turnover. Our virtual bookkeeping service can help keep the records consistent. Request a bookkeeping quote; bookkeeping is quoted separately from year-end accounts and tax filing.

Official guidance

Guidance checked for the October 2026 edition. Confirm your circumstances with HMRC or a qualified accountant before changing VAT methods.