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Blue Jay Accountants
Compliance 2026 Guide

VAT & Making Tax Digital for UK businesses.

When you need to register, which scheme to choose, and how Making Tax Digital changes what your software has to do.

Blue Jay Accountants CIMA chartered 6 min read
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01

Registration threshold

£90,000 rolling 12-month taxable turnover triggers mandatory registration. Register too late and HMRC backdates the liability.

Jump to section 02

Scheme choice matters

Flat Rate, Cash Accounting, or standard accruals, the wrong choice can cost thousands in lost input tax or cashflow timing.

Jump to section 03

Digital-link compliance

MTD requires an unbroken digital link from source transaction to submission. Manual spreadsheet transfers are no longer compliant.

Jump to section 04

Construction reverse charge

In-scope construction supplies shift VAT accounting to the customer, a major cashflow swing for CIS-registered subcontractors.

Jump to section

VAT registration: what triggers it.

The £90,000 threshold is two tests, not one. The backward-look test catches you when your taxable turnover for the previous rolling twelve months exceeds the threshold, measured at the end of any month, not at year-end. The forward-look test catches you when you have reasonable grounds to believe your taxable turnover will exceed £90,000 in the next thirty days alone. The forward-look test is the one businesses miss: a single large contract signed today can create a registration date at the start of this month, with backdated VAT due on every taxable supply in the period, typically absorbed out of the business's own margin, since it is rarely commercially possible to retrospectively bill customers for VAT they were not invoiced for at the time.

Taxable turnover is not the same as turnover. Exempt supplies (most insurance, certain education, some financial services) and supplies outside the scope of UK VAT (B2B services to overseas business customers under the general place of supply rule) sit outside the test. Zero-rated supplies are inside it, a children's clothing retailer at £85,000 of zero-rated sales is two months of growth from registration even though the VAT it ultimately charges will be at 0%.

Voluntary registration below the threshold is sometimes the right call, typically where input VAT on stock, equipment or services is material and your customers are themselves VAT-registered (so the VAT you charge them is recovered, not a price increase). It is rarely the right call where your customer base is consumer or non-VAT-registered: every invoice becomes 20% more expensive overnight, and the input VAT recovery is unlikely to compensate for the lost competitiveness.

Choosing the right VAT scheme.

Most newly-registered businesses default to the standard accruals scheme by inertia, then discover at year two that another scheme would have saved them four figures a year. The choice is rarely obvious from a leaflet, because the right answer depends on your input-VAT profile, your customer payment patterns, and where your turnover is heading. Three quick illustrations.

Digital agency on the Flat Rate Scheme

A two-director consultancy turning over £180,000 (excluding VAT) has minimal input VAT to recover, subscriptions, a few thousand a year of software, a co-working desk. Standard accruals would mean charging £36,000 of output VAT and recovering perhaps £600 of input VAT, £35,400 paid to HMRC.

Under the Flat Rate Scheme at the 14.5% management-consultancy sector rate, the agency still charges customers £36,000 of output VAT but pays HMRC 14.5% of the gross £216,000, £31,320, and forfeits input VAT recovery. The net retained is roughly £4,000 a year, plus a 1% discount in the first year of registration that is worth a further £2,160.

The trap is the limited-cost-trader rule. If your goods spend (excluding services, capital expenditure, food, and motor expenses) is below 2% of gross turnover, or below £1,000 a year, the flat rate jumps to 16.5% regardless of sector. That is close to the 16.67% you would lose by handing back all the VAT you charged. The Flat Rate Scheme stops working at that point and reverting to standard accruals usually becomes the better call.

Wholesaler on standard accruals

A wholesaler turning over £600,000 (excluding VAT) with cost of goods sold at £400,000 generates around £80,000 of recoverable input VAT a year. Standard accruals: charge £120,000 of output VAT, recover £80,000 of input VAT, pay £40,000 net to HMRC.

The Flat Rate Scheme at the 8.5% wholesaling rate would mean paying 8.5% of £720,000 (gross) to HMRC, £61,200, with no recovery on the £80,000 of input VAT. The annual cost of choosing the wrong scheme is around £21,000. Standard accruals is the default for any business where input VAT is materially more than 1-2% of turnover: stock-heavy retail, manufacturing, hospitality with food and drink purchases, and any service business with material subcontracted costs.

B2B services business using Cash Accounting

A commercial services business turning over £900,000, invoicing larger corporate customers who routinely pay on 60-90 day terms. Under standard accruals, output VAT is due to HMRC on the date of invoice, meaning the business is paying HMRC the VAT element of a £30,000 invoice eight to twelve weeks before the customer pays. Across a year, that is permanently lending HMRC tens of thousands of pounds of working capital.

The Cash Accounting Scheme flips the timing: VAT is accounted for when the customer actually pays. The threshold to join is £1.35 million of taxable turnover (you must leave at £1.6 million), so it suits established small-and-medium businesses. The corollary is that input VAT on supplier invoices is also delayed until you pay them, usually a manageable mismatch where supplier terms are tighter than customer terms.

The decision is rarely permanent. You can switch schemes at the start of any VAT period (with notification to HMRC), and the right scheme at £200,000 of turnover is often the wrong one at £700,000. The cost of getting it wrong is paid quietly across the year, not as a single penalty event, but as either lost input VAT recovery or persistent cashflow drag. Large capital purchases interact with scheme choice, the capital allowances guide covers how to work through AIA and Full Expensing alongside the VAT position, and the capital spend timing guide covers when to bring a purchase into the current period.

MTD digital link: what HMRC checks.

Making Tax Digital for VAT has applied to all VAT-registered businesses since April 2022, regardless of turnover. The two compliance pillars are digital records (transaction-level data captured in compatible software) and the digital link (an unbroken chain from source data to the figures submitted to HMRC).

The breakage point is almost always the same: a marketplace settlement file (Amazon, eBay, Shopify, Etsy) downloaded as CSV, opened in a spreadsheet, summarised by hand, then typed into accounting software or directly into a return. That manual transfer is the prohibited step. Compliant solutions use connector tools that pull marketplace data into the bookkeeping ledger via API, preserving the digital link from source transaction to VAT return cell.

The penalty regime moved to a points-based system in January 2023. Each missed VAT submission earns one point; reach the threshold (four points for quarterly filers, five for monthly, two for annual) and a £200 penalty applies, with another £200 for each subsequent late submission until the points are wiped by a clean run of compliant filings. Late-payment interest accrues from day one of any unpaid VAT, and a first late-payment penalty kicks in after fifteen days of arrears, escalating after thirty. The points reset only after a sustained period of compliant filing, so a single chaotic year can shape penalty exposure for the year that follows.

Construction Reverse Charge: the cashflow shift that hits the small subcontractor.

The Domestic Reverse Charge for construction services has been live since 1 March 2021. It applies to specified construction supplies between two VAT-registered parties within the Construction Industry Scheme, where the customer is not the end user. In scope: most subcontractor-to-contractor labour, materials supplied as part of that labour, and the on-charging of construction services. Out of scope: supplies to a developer building for sale, supplies direct to a homeowner or other end user, and zero-rated supplies (such as new-build residential).

The mechanics are simple in description and consequential in practice. A subcontractor invoicing a contractor £10,000 for in-scope work charges no VAT but states on the invoice that the reverse charge applies and quotes the rate the customer must apply. The customer (the contractor) accounts for the £2,000 of output VAT on its own VAT return and recovers the same amount as input VAT on the same return, a nil-net adjustment for the contractor.

The cashflow consequence is one-sided. Pre-2021, the same subcontractor invoiced £12,000 (£10,000 plus £2,000 VAT), banked the full amount on payment, and remitted £2,000 to HMRC with the next quarter's return, effectively a free working-capital line of up to three months. Post-reverse-charge, that £2,000 stays in the contractor's hands and never reaches the subcontractor's bank account. For a subcontractor running on tight margins and slow payment, that working-capital reduction was the single biggest reason for the 2021 spike in CIS-registered businesses moving onto monthly returns and chasing input VAT recoveries faster.

Related VAT guides

Guide

VAT Cash Accounting Scheme Guide

How the VAT Cash Accounting Scheme works, who can use it, when VAT becomes payable and how it affects cash flow.

 Guide

VAT Flat Rate Scheme Guide

How the VAT Flat Rate Scheme works, including limited cost trader rules, joining thresholds, leaving rules and when it may cost more.

 Guide

When Should I Register for VAT?

When a UK business must register for VAT, how the rolling threshold works, what taxable turnover includes and when voluntary registration helps.

Related tools and services

VAT Scheme Comparison Compare Standard, Flat Rate and Cash schemes
VAT Returns Service MTD-compliant returns & scheme advice
E-commerce Sellers Marketplace VAT compliance

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