VAT is one of the most common areas where UK businesses run into avoidable penalties. The rules are detailed, deadlines are strict, and the consequences of errors compound quickly. Whether you've just registered or have been submitting returns for years, it's worth reviewing whether your process is watertight.
Know your VAT period and filing deadline
Most VAT-registered businesses file quarterly, though annual and monthly schemes exist. Your deadline is one calendar month and seven days after the end of each VAT period. Missing this — even by a day — triggers a surcharge notice and starts a 12-month clock.
Pro tip: Set a calendar reminder two weeks before each deadline. That gives you time to resolve any issues with missing transactions.
The most common VAT mistakes
HMRC audits frequently surface the same errors across businesses of all sizes. Most are preventable with better process.
- Reclaiming VAT on non-business or personal expenses
- Reclaiming VAT on client entertainment (blocked input tax)
- Missing the threshold and filing late after crossing £90,000 turnover
- Applying the wrong VAT rate — particularly on zero-rated vs. exempt supplies
- Failing to account for VAT on imported goods post-Brexit
Making Tax Digital changes everything
Under MTD for VAT, you cannot file using HMRC's old online portal. You must use MTD-compatible software — Xero, QuickBooks, Sage, or similar. Every VAT return must be submitted with a full digital audit trail from your records to the submission. Manual spreadsheets without bridging software no longer comply.
Flat Rate Scheme: is it still worth it?
The Flat Rate Scheme lets eligible businesses pay a fixed percentage of gross turnover rather than calculating input and output VAT separately. Whether it saves you money depends entirely on your sector rate and your actual VAT reclaim position. It's worth reviewing annually — especially if your cost structure has changed.
Pro tip: If you're a 'limited cost trader' (goods costing less than 2% of turnover), the flat rate is 16.5% — often less advantageous than standard accounting.
VAT compliance is not complicated when the right systems are in place — it becomes complicated when records are incomplete or deadlines are missed. A VAT-registered business with clean monthly bookkeeping rarely has problems at return time. The returns become a formality, not a scramble.
Ready to hand it over?
Not confident in your VAT process?
We prepare and file VAT returns for UK businesses — accurately, on time, and with full MTD compliance. Talk to us before your next deadline.
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