3.4 Choosing, Joining & Withdrawing from VAT Schemes

AAT Level 3 Diploma in Accounting Q2022

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1 Chapter 1: VAT Legislation, Registration & Records

1.1 Scope of UK VAT & Supply Classification 1.2 Compulsory & Voluntary VAT Registration 1.3 VAT Deregistration, Tax Points & Invoicing 1.4 VAT Records, Retention & HMRC Powers of Inspection 1.5 Late Registration, HMRC Assessments & Failure-to-Notify Penalties

2 Chapter 2: Calculating Output Tax & Input Tax

2.1 Output Tax Calculations & Special Adjustments 2.2 Input Tax Recovery & Blocked Input Tax 2.3 Bad Debt Relief & Partial Exemption Overview 2.4 VAT Invoice Types, E-Invoicing & Advanced Tax Points 2.5 Imports, Exports & Postponed VAT Accounting

3 Chapter 3: VAT Special Accounting Schemes

3.1 Flat Rate Scheme for Small Businesses 3.2 Cash Accounting Scheme 3.3 Annual Accounting Scheme & Second-Hand Margin Schemes 3.4 Choosing, Joining & Withdrawing from VAT Schemes

4 Chapter 4: VAT Returns, Making Tax Digital, Deadlines & Penalties

4.1 Completing & Verifying the 9-Box VAT Return 4.2 Making Tax Digital (MTD) & Digital Record Keeping 4.3 HMRC Error Correction & Points-Based Penalty Regime 4.4 Extracting & Validating VAT Data from the Accounting System 4.5 Filing Frequency, Payment Methods & VAT Deadlines

5 Chapter 5: Principles of Payroll & Statutory Deductions

5.1 PAYE Income Tax & Tax Codes 5.2 National Insurance Contributions 5.3 Statutory Payments, Deductions & Payroll Documentation 5.4 Employer Registration, Payroll Records & HMRC Powers 5.5 Gross Pay to Net Pay: Calculation, Reconciliation & Payslips

6 Chapter 6: RTI, Internal Reporting & Professional Ethics

6.1 Real Time Information (RTI) Submissions 6.2 Internal Financial Reporting & Management Communication 6.3 Professional Ethics, Data Protection & Record Retention 6.4 Payroll Forms, P11D Reporting & Payrolling Benefits 6.5 Keeping Knowledge Current, Authorisation & Communicating Change

3.4 Choosing, Joining & Withdrawing from VAT Schemes

Key Takeaways Explain This Topic AI

The annual accounting and cash accounting schemes share a £1.35 million entry limit and a £1.6 million compulsory exit limit; the flat rate scheme uses £150,000 net to join and £230,000 gross to leave.

A business must leave a scheme compulsorily once it breaches the exit threshold, and may leave voluntarily at the end of a VAT period by notifying HMRC in writing.

Annual accounting changes the filing frequency to one return a year with nine monthly or three quarterly interim payments; cash and flat rate accounting change how the VAT is measured, not how often it is filed.

A business that has left the flat rate scheme cannot rejoin for 12 months, so the decision to leave should not be taken casually.

Repayment traders and rapidly growing businesses are usually the worst fit for annual accounting, because refunds are delayed to the year end and interim payments lag actual liability.

Last updated: August 2026

3.4 Choosing, Joining & Withdrawing from VAT Schemes

Sections 3.1 to 3.3 covered each special scheme in turn. The scope of content also asks for two things that only make sense across all three: the timing and frequency of filing and payment under each scheme , and the circumstances for voluntary and compulsory withdrawal . That comparison is what this section provides, plus the judgement a technician is expected to bring when a manager asks "should we join?"

1. The Three Schemes Side by Side

Annual accounting Cash accounting Flat rate scheme
What it changes How often you file and pay When VAT is recognised How much VAT you pay

Entry limit Expected taxable turnover ≤ £1.35m (excl. VAT) Expected taxable turnover ≤ £1.35m (excl. VAT) Expected taxable turnover ≤ £150,000 (excl. VAT)

Exit limit Taxable turnover > £1.6m Taxable turnover > £1.6m Total turnover > £230,000 (incl. VAT and exempt income)

Returns per year 1 4 (or as normal) 4 (or as normal)

Payment pattern 9 monthly or 3 quarterly interim payments plus a balancing payment Normal, but only on cash actually received Normal, at the sector percentage

Filing deadline 2 months after the year end 1 month and 7 days after the period end 1 month and 7 days after the period end

Input tax Normal rules Only when the supplier is paid Not recoverable, except a single capital asset costing £2,000 or more including VAT

Bad debt relief Normal claim Automatic — no cash, no output tax Not applicable in the usual sense
The one that catches people out

Entry limits are tested on expected taxable turnover excluding VAT . Exit limits are not all measured the same way: annual and cash accounting use taxable turnover , while the flat rate scheme uses total turnover including VAT and exempt income . Mixing those up is the single most common error in this part of the syllabus.

2. Filing and Payment Timing Under Each Scheme
Standard (non-scheme) accounting

Returns are usually quarterly , on one of three stagger patterns so that HMRC's workload is spread across the year.

The return must be filed and the VAT cleared into HMRC's bank account by 1 calendar month and 7 days after the end of the period.

Section 4.5 covers the payment-method variations, including the extra time direct debit gives.

Annual accounting

One return covers a 12-month accounting period, and is due — with the balancing payment — 2 months after the year end .

Interim payments are based on the previous year's net liability (or an estimate for a newly registered business):

Option Number of payments Each payment Due at the end of months
Monthly 9 10% of the prior year's net liability 4, 5, 6, 7, 8, 9, 10, 11, 12
Quarterly 3 25% of the prior year's net liability 4, 7, 10

If the business knows its liability has fallen sharply, it can ask HMRC to reduce the interim payments rather than lending HMRC money for a year.

Cash accounting and the flat rate scheme

Neither scheme changes the filing frequency or the deadline. A business on cash accounting or the flat rate scheme still files quarterly, still has 1 month and 7 days, and can still combine with annual accounting if it wants to file once a year.

3. Joining a Scheme

The common conditions are similar across all three:

Expected taxable turnover is within the entry limit for the next 12 months.

All VAT returns are up to date .

All VAT liabilities are paid , or covered by an agreed Time to Pay arrangement.

There is no conviction for a VAT offence and no penalty for VAT evasion in the past 12 months.

For the flat rate scheme specifically, the business must not have left the scheme in the previous 12 months , and must not be associated with another business.

A business normally joins at the start of a VAT period. Cash accounting and annual accounting are effectively self-selecting — you begin using them and record the fact — while the flat rate scheme requires an application to HMRC specifying the trade sector.

4. Leaving a Scheme
Voluntary withdrawal

A business may leave any of the three schemes voluntarily. In each case it leaves at the end of a VAT accounting period , having notified HMRC in writing. There is no need to give a reason.

On leaving cash accounting , the business must account for all the outstanding VAT on invoices issued but not yet paid. HMRC allows this to be settled either immediately on the final cash accounting return or spread over the following 6 months , which prevents a punishing one-off catch-up charge.

On leaving annual accounting , the business reverts to quarterly returns and must submit a return covering the period from the start of the annual accounting year to the date it left.

⚠️ The 12-month lock-out: a business that leaves the flat rate scheme cannot rejoin for 12 months . Leaving because of one bad quarter, then wanting back in, is not an option.

Compulsory withdrawal

Scheme Must leave when

Annual accounting Taxable turnover exceeds £1.6m ; leaving takes effect at the end of the current annual accounting period. The business must also leave immediately if it becomes insolvent or ceases to trade

Cash accounting Taxable turnover exceeds £1.6m in the past 12 months; the business leaves at the end of the current VAT period

Flat rate scheme Total turnover including VAT exceeds £230,000 in the past 12 months, or the business expects total turnover in the next 30 days alone to exceed £230,000

HMRC can also remove a business from a scheme where it considers this necessary to protect the revenue — for example, where the business is persistently late, or where the flat rate sector chosen is clearly wrong.

5. Which Schemes Can Be Combined?

Combination Allowed? Effect
Annual accounting + cash accounting Yes One return a year, VAT measured on cash movements
Annual accounting + flat rate scheme Yes One return a year, flat rate percentage applied to gross turnover

Cash accounting + flat rate scheme Yes Flat rate percentage applied to cash received rather than invoiced turnover

Cash accounting + annual accounting + flat rate Yes All three can run together for a very small business

6. Advising the Business: Who Should Join What?

This is the judgement the assessment is really testing when it asks you to "advise".

Business profile Best fit Why

Sells on 60-day credit terms to trade customers Cash accounting Output tax is deferred until the customer actually pays, and bad debt relief becomes automatic

Retailer taking cash at the till, buying on supplier credit Avoid cash accounting It would delay input tax recovery while output tax is already immediate — the scheme would hurt cash flow

Consultancy with low purchases and turnover under £150,000 Flat rate scheme , unless it is a limited cost business Little input tax to lose, and the sector percentage may be below the effective rate — but check the 16.5% limited cost business rate first

Zero-rated exporter reclaiming VAT every quarter Monthly returns , not annual accounting Annual accounting would trap the repayment until the year end

Stable turnover, small finance team, no repayment position Annual accounting One return instead of four, predictable interim payments, 2 months to finalise

Fast-growing business Avoid annual accounting Interim payments based on last year's smaller liability produce a large balancing payment

Worked scenario

Scenario: Deverell Fabrication Ltd has taxable turnover of £480,000, sells to trade customers on 45-day terms, buys most materials on 30-day terms, and files quarterly. It regularly waits two months to be paid but has to fund output VAT within 37 days of the quarter end.

Analysis:

Flat rate scheme: not available — turnover is far above the £150,000 entry limit.

Annual accounting: available (below £1.35m) but does not solve the problem. It would move the payments around, not reduce the mismatch, and would remove three chances a year to correct errors.

Cash accounting: available and directly on point. Output tax moves to the date the customer pays, closing the funding gap. Deverell pays its own suppliers faster than it is paid, so the delay in input tax recovery costs it relatively little.

Recommendation: join cash accounting from the start of the next VAT period, and revisit if turnover approaches £1.6m.