A customer’s late payment does not automatically move your company’s VAT deadline. Under the usual invoice-based VAT accounting, VAT on a sale may have to be reported and paid before the customer settles the invoice. Under HMRC’s Cash Accounting Scheme, the timing can differ because VAT on sales is normally accounted for when customers pay. The first step is to confirm which scheme the company uses and the actual VAT balance and due date. HMRC: Cash Accounting Scheme overview.
For a UK limited company, the problem may be a short timing gap or a sign that customer debts are becoming hard to collect. The right response depends on which it is. A loan can move a payment date; it cannot guarantee that an overdue customer will pay.
On the usual VAT accounting basis, the company includes sales and purchases in its VAT records according to the tax-point rules, not simply when the related cash reaches the bank. An invoice raised near the end of a VAT period can therefore contribute to the return even if the customer has 30 or 60 days to pay. Meanwhile wages, materials and other operating costs continue.
Consider a purely illustrative timeline: a company invoices a customer in June, includes the sale in the relevant VAT period, has a VAT payment due in August and expects the customer to pay in September. The exact dates will depend on its VAT periods and transaction rules. The gap is not an extra VAT charge; it is the difference between accounting for a sale and collecting its cash.
Check the company’s return rather than assuming the whole overdue invoice equals VAT due. Input tax, other sales, credits, adjustments and the accounting scheme all affect the final liability. The VAT deadline guide explains how to find the payment date.
Check whether Cash Accounting already changes the answer
HMRC’s Cash Accounting Scheme generally lets eligible businesses account for VAT on sales when customers pay, and reclaim VAT on purchases when they pay suppliers. That can reduce the mismatch created by unpaid sales invoices, but it also changes when input VAT is reclaimed. Eligibility, restrictions and the point at which a company joins or leaves need to be checked with HMRC’s current guidance and the company’s records.
You cannot retrospectively apply the scheme to make an existing overdue invoice disappear from an earlier VAT return. HMRC’s Cash Accounting Scheme guidance says a business joins at the beginning of a VAT accounting period. An accountant can assess whether it is suitable for future periods; it is not a same-day cure for a bill already due.
Find the size of the real cash gap
Put the VAT due date and expected customer receipts on one short forecast. Use the company’s bank balance and realistically collectible invoices, not just the total debtor ledger. Confirm what is already committed to payroll, suppliers, rent and other taxes. This gives a better answer than asking whether a VAT loan can cover the full return in isolation.
| Check | Why it changes the decision |
|---|---|
| Return amount and due date | Establishes the real HMRC obligation. |
| Invoice age and customer response | A promised payment differs from an unconfirmed debt. |
| Other available cash | Some VAT may be payable without borrowing. |
| Next tax and operating dates | A repayment schedule must fit the following month too. |
| Customer concentration | One delayed large invoice creates a different risk from many small debts. |
In the illustrative June-to-September case, the company might have enough cash for part of the VAT but not all of it. A part payment reduces the outstanding balance. What remains needs a plan before the deadline; merely expecting the customer to pay does not stop HMRC interest from accruing after a missed payment under the current VAT regime.
Practical options when the cash is short
Collect what is already owed. Confirm that the invoice is correct, the customer’s approval process is complete and no dispute is holding it up. Ask for a firm payment date and record it. If suitable, discuss a part payment or a revised commercial schedule. A credible receipt date makes both HMRC and lender discussions more useful.
Speak to HMRC early. If the company cannot pay the VAT in full, HMRC may consider a Time to Pay plan based on what it can afford. Interest can continue on the unpaid balance, and late-payment penalties depend on timing and the arrangement. The existing VAT payment-options guide gives the broader sequence.
Compare short-term funding. A VAT loan may bridge a temporary gap if the company can afford the lender repayments even when the customer pays later than hoped. VAT Loans arranges funding for UK limited companies, subject to lender assessment. Use the indicative calculator and compare the total amount repayable, dates and any fees with the HMRC route and other existing facilities. Funding a debt that may never be collected needs more caution than funding a confirmed receivable.
Plan for the next period. If the same gap repeats each quarter, review credit terms, invoice follow-up, VAT accounting method and the amount reserved as customer cash arrives. Repeated borrowing for the same structural gap can strain the business.
What about VAT bad-debt relief?
Bad-debt relief is not an immediate replacement for collecting an overdue invoice. HMRC’s VAT Notice 700/18 sets conditions, including waiting at least six months from the later of the payment due date and the supply date, along with record-keeping and accounting requirements. Businesses using Cash Accounting generally do not need this relief for a customer invoice on which they have not yet accounted for VAT. Check the specific transaction and scheme before claiming; an invoice merely being a few weeks late is not enough.
Common questions
Does HMRC wait until my customer pays?
Not automatically. Under usual VAT accounting, a customer paying late does not itself move the return or payment deadline. Cash Accounting changes the timing for eligible businesses that use it, but it cannot be applied backwards to a past period.
Should I still submit the return if cash has not arrived?
Yes. The filing obligation is separate from paying the balance. Check the figures and submit the return by its deadline, then contact HMRC promptly if the company cannot pay.
Will a VAT loan be repaid by the customer’s invoice?
The company remains responsible for the agreed loan repayments whether or not that customer pays on time. Test the schedule against a delayed or partial receipt before borrowing.
Next step: check the company’s VAT accounting method, due date and customer collection forecast. If the gap is temporary and the repayments are affordable, compare VAT funding with HMRC Time to Pay using the real numbers rather than the face value of an unpaid invoice.