The VAT Cash Accounting Scheme lets you account for VAT based on when money actually changes hands rather than the invoice date. You pay VAT to HMRC only once your customer has paid you, and you reclaim VAT on purchases only once you have paid your supplier. Businesses with estimated taxable turnover of £1.35 million or less can join, which makes the scheme a popular cash flow and bad debt tool for smaller VAT registered firms.

Under standard VAT accounting, the invoice date decides everything. The moment you raise a sales invoice you owe HMRC the VAT on it, even if the customer takes ninety days to pay, or never pays at all. For a business that offers credit terms, that timing gap can create a real squeeze. The Cash Accounting Scheme removes it by tying your VAT position to your bank account instead of your sales ledger. This guide explains how the scheme works, who qualifies, and where its limits sit. For the wider picture, see our accountancy and tax guide.

How does the Cash Accounting Scheme actually work?

The principle is simple. You calculate the VAT you owe on your sales using the date you receive payment, and you reclaim the VAT on your purchases using the date you pay your suppliers. The tax point that matters is the movement of cash, not the raising of an invoice.

Say you invoice a customer £10,000 plus £2,000 VAT in April, but they do not pay until July. Under standard accounting you would hand that £2,000 to HMRC on your April to June return, out of your own pocket, and wait for the customer. Under cash accounting the VAT falls into the July to September return, by which time the customer has actually paid you. You are never out of pocket on VAT you have not yet collected.

What is the cash flow and bad debt benefit?

The headline advantage is cash flow. You do not pay VAT to HMRC until your customer has paid you, so your VAT bill moves in step with your income rather than ahead of it. That is valuable for any business that invoices on credit terms or deals with slow paying customers.

There is a built in bad debt benefit too. Because you only account for output VAT once you are paid, a customer who never pays you never triggers a VAT liability. Under standard accounting you would have to pay the VAT first and then reclaim it later through the separate bad debt relief rules, which require the debt to be over six months old. Cash accounting handles this automatically, which is one less compliance headache.

The trade off is on your purchases. You cannot reclaim VAT on something until you have actually paid for it. For most businesses the cash flow gain on sales outweighs the delay on purchase reclaims, but if you buy a lot on credit and sell mostly for immediate payment, standard accounting may suit you better.

Who can join, and when must you leave?

You can join the scheme if your estimated VAT taxable turnover is £1.35 million or less (excluding VAT) over the next twelve months. You do not need to apply or tell HMRC in advance. You simply start using it from the beginning of a VAT accounting period, provided you are up to date with your VAT returns and payments.

Once you are in, you can stay in until your taxable turnover exceeds £1.6 million. At that point you must leave the scheme and return to standard accounting. The gap between the £1.35 million entry figure and the £1.6 million exit figure means you are not forced out the moment you have a good year, which gives growing businesses some breathing room. If you are close to either figure, keep an eye on the wider VAT registration threshold rules as well.

What cannot be used with the scheme?

The Cash Accounting Scheme is not compatible with every arrangement. You cannot use it at the same time as the VAT Flat Rate Scheme, which already has its own cash based option built in, so you choose one route or the other.

Some supplies are also excluded and must stay on standard VAT accounting even while the rest of your business uses cash accounting. These include:

  • Goods you buy or sell under a lease, hire purchase, conditional sale or credit sale agreement.
  • Goods you import.
  • Supplies where you issue a VAT invoice in advance of payment, or where the payment terms are six months or longer.

For those transactions you follow the normal invoice based rules, so many businesses run a mix. It pays to keep clean records that separate the two, because HMRC will expect your figures to reconcile if you are ever selected for a check.

How does it differ from standard VAT accounting?

The single difference is timing. Standard accounting, also called invoice or accrual accounting, uses the invoice date as the tax point. Cash accounting uses the payment date. Everything else, including your VAT rate, your returns and your Making Tax Digital obligations, works the same way under both methods.

This mirrors a choice you may already know from income tax, where sole traders weigh up the timing of income and expenses. Our guide on cash basis versus accruals accounting covers that parallel, and if you report income tax digitally, see Making Tax Digital for Income Tax. Choosing the right VAT method is about matching your VAT bill to the way cash actually flows through your business.

VAT is one of the most common areas HMRC examines during a compliance check, and even a scheme as sensible as cash accounting has to reconcile cleanly under scrutiny. A Solar Protect tax investigation insurance policy covers up to £100,000 of your accountant’s fees, with no excess to pay, so an enquiry into your VAT records does not turn into an unexpected bill. Get a quote to see how affordable that protection is.

Reviewed by Matthew Bartlett, Director, Solar Protect. This guide is general information, not personalised tax or financial advice. Figures are correct for the 2025/26 and 2026/27 UK tax years at the time of writing.