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HomeTaxes & DutiesVAT Return Estimator UK 2026/27 — Quarterly Box 5 Math
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VAT Return Estimator UK 2026/27 — Quarterly Box 5 Math

Calculate UK quarterly VAT returns, Making Tax Digital (MTD) Box 1 & Box 4 totals, and net VAT payable.

Quarterly VAT Return Details

Quarterly Sales Output VAT Charged (£) £6,000
£
£0£50,000
Quarterly Purchases Input VAT Reclaimable (£) £2,200
£
£0£50,000
Estimated Net Quarterly VAT Payable to HMRC
£3,800.00
Quarterly Return & Payment Deadline: 1 Month + 7 Days After Quarter

📊 VAT Return Box Breakdown

Box 1: Output VAT Charged on Sales £6,000.00
Box 4: Input VAT Reclaimed on Purchases -£2,200.00
Box 5: Net VAT Payable to HMRC £3,800.00

All VAT-registered businesses in the UK must submit electronic VAT Returns to HMRC at regular intervals (typically quarterly) under Making Tax Digital (MTD) for VAT legislation.

Understanding how Box 1 (Output VAT charged on sales) and Box 4 (Input VAT paid on business expenses) determine your net Box 5 payment keeps your business cash flow predictable.

⚙️ Statutory 9-Box VAT Return Rules for 2026/27

1. Key VAT Return Boxes

  • Box 1 (Output VAT): Total VAT charged on sales of goods and services to customers during the VAT period.
  • Box 4 (Input VAT): Total VAT paid on valid business purchases, stock, equipment, and utility bills.
  • Box 5 (Net VAT Payable / Refund): Calculated as Box 1 minus Box 4:
    • If Box 1 is greater than Box 4: You owe the net difference to HMRC.
    • If Box 4 is greater than Box 1: HMRC pays you a VAT refund.

2. Statutory Filing & Payment Deadlines

  • The electronic deadline for submitting your VAT return and paying HMRC is 1 calendar month and 7 days after the end of the quarterly VAT period.
  • Example: For the VAT quarter ending 30 June, the deadline for filing and payment is 7 August.

📊 Practical VAT Return Worked Examples

Below are two worked calculation examples illustrating quarterly VAT return submissions:

Example 1: Trading quarter with £6,000 output VAT and £2,200 input VAT
  • Box 1 (Sales Output VAT Charged): **£6,000.00**
  • Box 4 (Purchase Input VAT Reclaimable): **£2,200.00**
  • Box 5 Calculation: £6,000.00 - £2,200.00 = **£3,800.00**

Calculation: Net VAT due to HMRC = £3,800.00. Collected automatically via HMRC Direct Debit on the 10th of the month following the deadline.

Box 5 Net Payable to HMRC: **£3,800.00**
Example 2: Investment quarter with £3,000 output VAT and £7,500 input VAT (Equipment Purchase)
  • Box 1 (Sales Output VAT Charged): **£3,000.00**
  • Box 4 (Purchase Input VAT Reclaimable on New Machinery): **£7,500.00**
  • Box 5 Calculation: £3,000.00 - £7,500.00 = **-£4,500.00**

Calculation: Input VAT exceeds output VAT. HMRC deposits a £4,500.00 VAT refund check directly into the business bank account.

Box 5 Net HMRC Refund: **£4,500.00 Refund**

📑 Common Pitfalls & VAT Return Warnings

  1. Reclaiming Input VAT Without Valid VAT Invoices: HMRC inspectors strictly require valid tax invoices containing the seller’s 9-digit UK VAT number. You cannot claim Box 4 input VAT using simplified credit card till receipts without a breakdown.
  2. Reclaiming VAT on Business Entertainment: Input VAT incurred on entertaining UK clients, directors, or business partners is strictly non-deductible under UK VAT law and cannot be included in Box 4.
  3. New HMRC Points-Based Late Submission Penalties: Failing to file your VAT return on time incurs penalty points. Reaching 4 penalty points triggers an automatic statutory £200 fine plus late payment interest accrued daily.

❓ Frequently Asked Questions (FAQ)

MTD requires all VAT returns to be submitted electronically via API-enabled software (such as Xero, QuickBooks, or MTD bridging spreadsheets). Manual paper filings are no longer accepted by HMRC.

If your Box 5 calculation results in a refund, HMRC typically transfers the money directly into your registered business bank account within **10 working days** of receiving your electronic VAT return.

Input VAT on fuel used for business travel can be reclaimed using HMRC fuel scale charges or exact mileage records. Input VAT on purchasing a company car is generally 100% blocked unless it is an exclusive commercial taxi/hire car.

Standard Accounting reports VAT based on invoice dates. **Cash Accounting** allows small businesses to report VAT based on actual cash payment received dates, protecting cash flow from unpaid customer invoices.

Making Tax Digital (MTD): Mandatory digital filings for all VAT-registered businesses.
Box 1: VAT charged on sales.
Box 4: VAT paid on valid business expense receipts.
Box 5: Net VAT due (Box 1 minus Box 4).
Submission Deadline: 1 calendar month and 7 days following quarter end.