VAT Cash Accounting Scheme Explained: How It Works and Who Can Use It

What is the VAT cash accounting scheme?

VAT-registered businesses usually calculate VAT by reference to their sales and purchase invoices.

Under the normal method, this can mean accounting for VAT on a sale even when the customer has not yet paid the invoice.

Cash accounting changes the timing.

HMRC’s VAT Cash Accounting Scheme guidance explains that businesses using the scheme generally:

• account for VAT on sales when customers pay them; and
• reclaim VAT on purchases when they pay their suppliers.

The scheme does not change whether a transaction is subject to VAT or which VAT rate applies. It changes when the relevant VAT is brought into the VAT Return.

For most goods and services subject to the standard rate, the current UK standard VAT rate for 2026/27 remains 20%.

VAT cash accounting versus normal VAT accounting

The biggest difference is therefore timing, not the underlying VAT rate.

HMRC describes the scheme as potentially helpful for businesses that provide extended credit or experience significant bad debts. Conversely, businesses that are normally paid immediately or regularly reclaim more VAT than they pay may receive less benefit.

Who can use the VAT cash accounting scheme?

To join, your business must be VAT registered and your estimated VAT-taxable turnover for the next 12 months must normally be £1.35 million or less.

VAT-taxable turnover includes the value, excluding VAT, of standard-rated, reduced-rated and zero-rated taxable supplies. Exempt supplies are not included in this calculation. HMRC also excludes the expected sale of capital assets when calculating taxable supplies for entry into the scheme.

This £1.35 million limit is different from the general VAT registration threshold.

For 2026/27, compulsory VAT registration generally becomes relevant once VAT-taxable turnover exceeds £90,000, subject to the detailed registration rules. You can read more in our guide to VAT registration for sole traders.

When can you not use cash accounting?

You cannot normally use the VAT cash accounting scheme if, for example:

• you use the VAT Flat Rate Scheme;
• your VAT Returns or VAT payments are not up to date;
• you have committed a relevant VAT offence within the previous 12 months; or
• HMRC has withdrawn or denied access to the scheme in circumstances covered by its rules.

The full conditions should be checked against HMRC’s current Cash Accounting Scheme eligibility guidance before changing your VAT method.

Which transactions are excluded from cash accounting?

Using the scheme does not necessarily mean every transaction can be dealt with on a cash basis.

HMRC requires certain transactions to remain under the normal VAT accounting rules.

These include certain:

• lease purchase, hire purchase, conditional sale and credit sale transactions;
• transactions involving goods imported or acquired in circumstances covered by the detailed rules;
• transactions subject to a VAT domestic reverse charge;
• supplies where a VAT invoice is issued and payment is not due in full within six months; and
• supplies where a VAT invoice is issued in advance of making the supply.

These exceptions can become particularly important for construction businesses because some building and construction services fall within the VAT domestic reverse charge.

HMRC’s detailed VAT Notice 731 on cash accounting explains the exclusions and special transaction rules.

How do you join the VAT cash accounting scheme?

There is usually no separate application to HMRC.

If your business is eligible, you can start using cash accounting from the beginning of a VAT accounting period.

You cannot apply the scheme retrospectively.

For example, if your VAT quarter starts on 1 October and you decide during September that cash accounting is suitable, you could potentially begin using it from 1 October, provided you meet the conditions.

Businesses moving from normal VAT accounting also need to identify payments relating to transactions that have already been accounted for under the previous method. This prevents VAT being reported or reclaimed twice.

Accurate bookkeeping is therefore particularly important when changing methods. Real Key Accountancy’s bookkeeping and VAT support services can help businesses keep their financial records organised.

How does VAT cash accounting work in practice?

Consider a straightforward standard-rated sale.

Example:

A VAT-registered business issues an invoice for:

• Net sale: £1,000
• VAT at 20%: £200
• Total customer invoice: £1,200

Under normal VAT accounting, the £200 output VAT may need to be included in the relevant VAT Return even if the customer has not paid.

Under the VAT cash accounting scheme, the business generally accounts for the £200 VAT when the £1,200 payment is received.

That means the VAT payment is more closely aligned with the cash actually coming into the business.

However, the same principle works in reverse for purchases.

If the business receives an eligible £1,200 supplier invoice containing £200 VAT but has not paid it, the £200 input VAT generally cannot yet be reclaimed under cash accounting. It is normally reclaimed in the VAT period in which the supplier is paid.

What happens with part payments?

Cash accounting can also deal with customers who pay invoices in instalments.

Suppose the £1,200 invoice above is only half paid.

The business receives £600.

Because half of the VAT-inclusive invoice has been paid, the business would generally account for half of the VAT:

£100 VAT

The remaining VAT would normally be accounted for as further payments are received.

Where VAT is not separately identified within a part payment, HMRC generally requires the payment to be treated as VAT-inclusive. There are also allocation rules where payments cover several invoices or supplies at different VAT rates.

What are the advantages of VAT cash accounting?

Better cash flow when customers pay slowly

The most obvious benefit is avoiding, in many ordinary cases, paying output VAT to HMRC before receiving the customer’s money.

That can be valuable for consultants, contractors, tradespeople and other small businesses offering 30-day or similar credit terms.

Built-in protection against unpaid customer debts

If a customer never pays an invoice, you generally have not accounted for the unpaid VAT under cash accounting.

HMRC therefore describes the scheme as providing automatic bad debt relief in this sense.

VAT follows actual payments

For some businesses, tracking VAT using money received and paid can make cash-flow planning easier to understand.

However, the underlying records still need to be complete and accurate.

What are the disadvantages?

Cash accounting is not automatically better.

You must wait to reclaim purchase VAT

If you regularly receive generous payment terms from suppliers, the scheme can delay your input VAT recovery.

This may be especially significant for a growing business buying equipment, stock or other VAT-bearing items.

Businesses regularly receiving VAT refunds may be worse off

A business that consistently pays substantial input VAT while charging relatively little output VAT may prefer normal accounting because input VAT can potentially be recovered earlier.

Records still need careful management

You need to match payments against the appropriate invoices, especially where customers make part payments, combine several invoices into one payment or pay through agents.

Cash accounting should therefore not be confused with simply recording money in and out of a bank account.

What records do you need to keep?

HMRC requires cash-accounting records to clearly cross-reference:

• customer payments to the relevant sales invoices;
• supplier payments to the relevant purchase invoices; and
• those transactions to commercial evidence such as bank statements or other payment records.

Additional evidence requirements can apply to cash payments.

Your records should allow you to establish both when money was paid or received and which invoice the payment relates to.

Real Key Accountancy provides bookkeeping, VAT and digital-record support for sole traders and small businesses. Businesses wanting ongoing support can also review the available bookkeeping packages.

Does Making Tax Digital apply to VAT cash accounting?

Yes. Using cash accounting does not remove your Making Tax Digital for VAT obligations.

All VAT-registered businesses are generally required to keep specified VAT records digitally and submit VAT Returns using compatible software, unless an exemption applies.

Your accounting system therefore needs to record the payment information required for cash accounting while also meeting the applicable digital-record requirements.

HMRC’s Making Tax Digital for VAT guidance explains the current requirements.

When do you have to leave the VAT cash accounting scheme?

Once you are using the scheme, you can generally remain within it until annual VAT-taxable turnover exceeds £1.6 million.

If it goes above this level, you will normally have to leave at the end of the relevant VAT accounting period.

There is a limited exception where the threshold has been exceeded because of a genuine one-off increase in sales and HMRC’s conditions are satisfied. For example, certain one-off disposals may qualify where there are reasonable grounds to believe taxable supplies during the following 12 months will fall below £1.35 million.

You can also choose to leave voluntarily.

HMRC states that you should normally leave at the end of a VAT accounting period. You do not generally have to notify HMRC simply because you stop using cash accounting.

However, leaving creates an important VAT adjustment.

Outstanding VAT that has been deferred because customers have not yet paid eventually has to be brought into account. HMRC generally allows outstanding VAT to be reported and paid over up to six months, although earlier payment can be required in specified circumstances.

Common VAT cash accounting mistakes

Several problems are worth avoiding.

Using the scheme retrospectively. You cannot simply recalculate earlier VAT periods using cash accounting. The scheme starts prospectively from the appropriate VAT period.

Claiming purchase VAT before paying the supplier. Cash accounting delays both output VAT and input VAT.

Forgetting part payments. Receiving only part of an invoice does not mean the transaction can be ignored until the balance arrives.

Poor payment matching. Bank receipts should be matched accurately to the corresponding invoices.

Applying cash accounting to excluded transactions. Certain financing arrangements, advance invoices and domestic reverse-charge transactions require different treatment.

Ignoring the £1.6 million exit threshold. Turnover should be monitored regularly rather than reviewed only once a year.

Is the VAT cash accounting scheme right for your business?

The answer depends largely on how money moves through your business.

Cash accounting may be worth considering if customers regularly take several weeks to pay and you usually pay suppliers relatively quickly.

Normal VAT accounting may be more attractive if your customers normally pay immediately, your suppliers give you long credit terms or your business frequently reclaims VAT.

The decision should therefore be based on both compliance and cash flow rather than assuming one method is always better.

If you need help reviewing your VAT records or deciding how your bookkeeping should be organised, Real Key Accountancy offers practical accountancy and VAT support for small businesses.