Is the VAT Cash Accounting Scheme worth it?
The VAT Cash Accounting Scheme can be worth it if customers take time to pay and cash flow is tight. It means you usually pay VAT to HMRC when your customers pay you, rather than when you issue invoices. However, it is not automatically better than standard VAT accounting, because you also usually reclaim VAT on purchases only when you have paid your suppliers.
GOV.UK’s VAT Cash Accounting Scheme overview explains that, under the scheme, businesses pay VAT on sales when customers pay and reclaim VAT on purchases when suppliers are paid.
Merranti’s VAT registration guide is useful background because VAT scheme choice should be reviewed alongside registration timing, pricing, invoicing and cash flow.
The scheme is mainly about timing. It does not change the VAT rate you charge customers. It changes when VAT is included on your VAT return.
How the Cash Accounting Scheme works
Under standard VAT accounting, you usually account for VAT based on invoices.
If you invoice a customer for £1,000 plus £200 VAT, that £200 output VAT is normally included on the VAT return for the period covering the invoice date, even if the customer has not paid yet.
This can create a cash-flow problem.
You may have to pay VAT to HMRC before you have received the money from the customer.
Under the Cash Accounting Scheme, the VAT is usually accounted for when payment is received.
GOV.UK’s VAT Cash Accounting Scheme overview explains that the scheme lets you pay VAT on sales when customers pay you.
For example, if you issue a VAT invoice in March but the customer pays in May, the VAT may fall into the later VAT period when the payment is received, rather than the earlier period when the invoice was issued.
That can help if customers regularly pay slowly.
The trade-off: purchase VAT is also delayed
The Cash Accounting Scheme is not all one-way benefit.
The same timing principle usually applies to purchases.
Under standard VAT accounting, you may be able to reclaim VAT on supplier invoices before you have paid them, provided you hold a valid VAT invoice and meet the normal rules.
Under cash accounting, you usually reclaim purchase VAT when you pay your supplier.
GOV.UK’s VAT Cash Accounting Scheme overview explains that businesses using the scheme reclaim VAT on purchases when suppliers are paid.
This matters if you have large supplier bills.
For example, if you receive a supplier invoice for equipment but do not pay it until the next VAT period, you may not be able to reclaim the VAT until the payment is made.
That means the scheme can help with slow-paying customers, but it can delay input VAT recovery on unpaid supplier invoices.
Merranti’s business expense guide is useful here because a cost being allowable for tax does not automatically mean the VAT is recoverable immediately.
Who can join the Cash Accounting Scheme?
You can usually use the Cash Accounting Scheme if your business is VAT registered and your estimated VAT taxable turnover is £1.35 million or less in the next 12 months.
GOV.UK’s Cash Accounting Scheme eligibility guidance explains the joining conditions.
GOV.UK’s VAT thresholds guide also lists the Cash Accounting Scheme joining threshold and leaving threshold.
This means the scheme is aimed at smaller and medium-sized VAT-registered businesses.
It may be relevant for consultants, agencies, trades, professional service businesses, wholesalers, contractors and other businesses where customers are invoiced and pay later.
Merranti’s VAT registration in 2026 guide is useful if you are newly VAT registered and deciding how VAT will affect your cash flow and billing process.
When the Cash Accounting Scheme may work well
The Cash Accounting Scheme may work well where:
customers take time to pay
the business offers credit terms
bad debts are a recurring issue
cash flow is tight
sales invoices are raised before payment is received
supplier bills are usually paid quickly
the business does not usually receive VAT repayments
the bookkeeping system can track payment dates properly
For example, a consultant who invoices clients on 30-day or 60-day terms may benefit because VAT is not usually paid to HMRC until the customer pays.
A contractor working with larger companies may also benefit if customers have long payment processes.
The scheme can also reduce the impact of bad debts. If a customer never pays, the business may avoid paying output VAT on that unpaid invoice under cash accounting.
This can be simpler than paying VAT under standard accounting and then later claiming bad debt relief.
When the Cash Accounting Scheme may not help
The Cash Accounting Scheme may not help where:
customers pay immediately
the business is paid upfront
sales are mainly card payments or cash sales
the business has large unpaid supplier invoices
the business regularly receives VAT repayments
the business buys stock or equipment on credit
supplier payment terms are longer than customer payment terms
the business has complex VAT transactions excluded from the scheme
For example, a shop, café or online store that receives payment at the point of sale may see little benefit. The customer pays immediately, so there is no major timing difference on sales VAT.
A business making large purchases on credit may also lose out because input VAT recovery is delayed until suppliers are paid.
If a business often reclaims more VAT than it pays, cash accounting may be less attractive because repayment claims may be delayed.
Merranti’s pre-registration VAT guide is relevant for newly registered businesses with setup costs, stock or equipment, because first-return VAT recovery should be reviewed before choosing a scheme.
Cash Accounting Scheme and the Flat Rate Scheme
The Cash Accounting Scheme cannot usually be used with the Flat Rate Scheme.
GOV.UK’s Cash Accounting Scheme eligibility guidance says you cannot use cash accounting if you use the VAT Flat Rate Scheme. The Flat Rate Scheme has its own cash-based method.
This is important because some small businesses compare VAT schemes when they first register.
The Flat Rate Scheme may look simple, but it can be poor value for businesses with significant VATable costs or those caught by the limited cost trader rule.
Merranti’s Flat Rate Scheme guide explains why the Flat Rate Scheme is not automatically cheaper.
If cash flow is the main concern, the Cash Accounting Scheme may be more relevant than the Flat Rate Scheme.
If simplicity is the main concern, the Flat Rate Scheme may be considered, but the numbers still need to be checked.
Transactions that may be excluded
The Cash Accounting Scheme does not apply cleanly to every transaction.
GOV.UK’s Cash Accounting Scheme eligibility guidance lists transactions where standard VAT accounting must be used instead.
These can include certain transactions involving long payment terms, invoices raised in advance, hire purchase, lease purchase, conditional sale or credit sale, and some goods movements involving Northern Ireland and the EU.
The detailed rules matter if the business has unusual contracts, finance agreements, import arrangements or advance invoices.
HMRC’s Cash Accounting Scheme notice gives more detailed guidance on the scheme and its exclusions.
For most straightforward service businesses, the scheme may be relatively simple. For businesses with more complex transactions, it should be reviewed before use.
How do you join the Cash Accounting Scheme?
You do not usually need to apply to HMRC before using the Cash Accounting Scheme.
GOV.UK’s join or leave the Cash Accounting Scheme guidance says you join at the beginning of a VAT accounting period and do not have to tell HMRC you use cash accounting.
However, you must be eligible.
You also need to make sure your bookkeeping system is set up correctly. VAT returns must be based on payments received and made, not simply invoice dates.
That means records must clearly track:
invoice dates
payment dates
part payments
supplier payments
customer receipts
VAT on each transaction
transactions outside the scheme
Merranti’s accounting records guide is useful because cash accounting depends on accurate payment records, not just invoices.
When must you leave the Cash Accounting Scheme?
You must leave the scheme if you are no longer eligible.
GOV.UK’s Cash Accounting Scheme eligibility guidance says businesses must leave if VAT taxable turnover is more than £1.6 million.
GOV.UK’s join or leave guidance explains that, when leaving the scheme, you must report and pay any outstanding VAT, whether customers have paid you or not.
In some cases, outstanding VAT can be reported and paid over 6 months.
This is important because leaving the scheme can create a cash-flow impact. If the business has built up unpaid invoices while using cash accounting, it may need to account for VAT when it moves back to standard VAT accounting.
You should not wait until the business has clearly outgrown the scheme before reviewing it.
Common Cash Accounting Scheme mistakes
The first mistake is assuming the scheme saves VAT.
It usually changes timing, not the VAT rate or the amount charged to customers.
The second mistake is forgetting that purchase VAT is also delayed.
If you have not paid a supplier, you may not be able to reclaim the VAT yet.
The third mistake is using the scheme with the Flat Rate Scheme.
GOV.UK says businesses cannot use cash accounting if they use the Flat Rate Scheme, because the Flat Rate Scheme has its own cash-based turnover method.
The fourth mistake is using invoice dates instead of payment dates.
This defeats the purpose of the scheme and can lead to incorrect VAT returns.
The fifth mistake is ignoring part payments.
If a customer pays an invoice in instalments, the VAT treatment needs to follow the payments properly.
The sixth mistake is failing to review the scheme as the business grows.
A scheme that helped at £150,000 turnover may not be suitable at £1 million turnover, especially if customer payment patterns, supplier terms or VAT repayments have changed.
Speak to Merranti before using the Cash Accounting Scheme
The VAT Cash Accounting Scheme can be useful, especially where customers pay slowly and cash flow is tight. But it should not be chosen automatically.
A proper review should compare standard VAT accounting with cash accounting, check customer payment terms, supplier payment timing, bad debt risk, VAT repayment patterns, bookkeeping setup, VAT scheme options and turnover thresholds.
Merranti’s VAT registration guide, Flat Rate Scheme guide, pre-registration VAT guide and accounting records guide are useful starting points.
If you are unsure whether to use the VAT Cash Accounting Scheme, contact Merranti Accounting before your next VAT return so the cash-flow effect and VAT return setup can be reviewed properly.
What is the VAT Cash Accounting Scheme?
The VAT Cash Accounting Scheme is a VAT scheme where you usually pay VAT on sales when customers pay you, and reclaim VAT on purchases when you pay suppliers. GOV.UK explains the scheme here.
Who can use the VAT Cash Accounting Scheme?
You can usually use the scheme if your business is VAT registered and estimated VAT taxable turnover is £1.35 million or less in the next 12 months. GOV.UK explains the eligibility rules here.
Does cash accounting reduce VAT?
Usually, no. It mainly changes when VAT is paid or reclaimed. It can help cash flow, but it does not normally reduce the VAT rate or change what you charge customers.
Can I use cash accounting with the Flat Rate Scheme?
No. GOV.UK says you cannot use the Cash Accounting Scheme if you use the VAT Flat Rate Scheme, although the Flat Rate Scheme has its own cash-based turnover method.
When must I leave the Cash Accounting Scheme?
You must usually leave if your VAT taxable turnover is more than £1.6 million, or if you no longer meet the scheme conditions. GOV.UK explains the leaving rules here.
Is the Cash Accounting Scheme good for slow-paying customers?
It can be useful where customers pay slowly, because VAT is usually paid to HMRC when the customer pays rather than when the invoice is issued. However, the benefit depends on your supplier payments, VAT recovery and bookkeeping setup.
