Quarterly accounting
You account for VAT quarterly based on the invoices issued and received in the period. You pay all VAT due, whether or not your clients have paid the invoices that incurred it.
Usually VAT bad debt relief is not available until the debt is six months old. However, under the cash accounting system explained below, the problem of VAT on bad debts disappears.
Cash accounting
Registered traders whose turnover is not expected to exceed a particular threshold in the following 12 months may use the cash accounting scheme. This allows you to account for VAT based on the actual payments received, instead of on the invoices issued and received.
You can start using this scheme at the beginning of a tax period - you do not need permission to use it.
Cash accounting can improve your cashflow if customers normally take a long time to pay. If, however, your customers pay promptly, you would probably be worse off under cash accounting because of the loss of input tax on unpaid creditors.
VAT cannot be accounted for again on receipts and payments of invoices issued and dealt with before you started to use the scheme.
You cannot use cash accounting:
For the sale of goods or services invoiced in advance of the supply being made.
Where payment for sales is not due for more than six months after the invoice date.
You must apply the scheme to the whole of your business. However, if you find your accounts system is unable to comply with the requirements, or if it proves to be of no benefit, you may leave the scheme.
Once your turnover exceeds the threshold, you are usually able to continue in the scheme until you reach the 25% tolerance limit. You must account for all outstanding tax in the period in which you leave the scheme.