The VAT Annual Accounting Scheme — one return a year, and who it actually suits

Four VAT returns a year is four chances to be late, four reconciliations, four deadlines. The Annual Accounting Scheme swaps them for one — a single return covering the whole year — and spreads the payments out in advance. For the right business it's a real reduction in admin and a smoother cash flow. For the wrong one, it's an interest-free loan to HMRC.

How it works

You make interim payments through the year — usually nine monthly instalments, each 10% of last year's VAT liability (a three-payment quarterly pattern is also available). Then you file one annual return, due two months after your VAT year-end, and settle the difference with a balancing payment (or claim a refund if you've overpaid).

The deal in one line: pay predictable instalments based on last year, reconcile once at year-end, and get an extra month to file compared with the standard quarterly deadline.

A useful detail for partially-exempt businesses: the eligibility threshold is based on taxable turnover, so VAT-exempt income doesn't count towards it.

Who can join

• Estimated taxable turnover of £1.35 million or less to join.
• You must be up to date with returns and payments, and HMRC has to approve your entry before you start (unlike cash accounting, where you just begin).
• You must leave once turnover exceeds £1.6 million.
• VAT groups and divisional registrations can't use it.

Where it stops being a good idea

The scheme has one clear weak spot:

• If you regularly reclaim VAT — you're in a repayment position most periods — annual accounting works against you. Refunds only come once a year, so you're financing HMRC in the meantime. Quarterly (or even monthly) returns get your money back faster.
• If your turnover is growing fast, the instalments based on last year can run low, leaving a large balancing payment — and you may breach the £1.6m exit threshold mid-stride.
• If your VAT varies a lot year to year, you have to keep an eye on the instalments and tell HMRC when they're materially wrong.

For a steady business that pays more VAT than it reclaims, none of that bites, and the once-a-year simplicity is exactly the point.

Where OneSixth comes in

OneSixth supports the Annual Accounting Scheme end-to-end, so the single annual return is calculated from your ledger with the working papers attached — and if you also run a margin scheme or partial exemption, those feed the same return rather than living in a separate spreadsheet.