VAT Registration in 2026: When £90,000 is the Wrong Number to Chase

The VAT registration threshold has sat at £90,000 since April 2024, and most Kent SMEs we work with treat it as a hard line: trade below it, stay unregistered; cross it, sign up. In practice the right answer is rarely that simple, and a surprising number of small businesses end up either registering when they should not, or holding off when they would actually be better registered.

This post is the plain-English version of the conversation we have most often with Kent SME clients on the cusp of VAT. The aim is to help you make a deliberate decision, not a default one.

The rules, briefly

You must register for VAT if your taxable turnover in any rolling 12-month window exceeds £90,000, or if you reasonably expect it to in the next 30 days. The clock does not run on your accounting year — HMRC looks at any 12-month period, so a single strong quarter can trigger registration even when your annual total looks comfortably below the threshold.

Once registered, you charge VAT on your sales (typically at 20%), reclaim VAT on your purchases, and file quarterly VAT returns through MTD-compatible software. Deregistration is allowed if turnover falls below £88,000.

Why £90,000 is the wrong number to chase

The threshold is a compliance trigger, not a strategic target. Three reasons it should not drive your decision-making in isolation:

• Voluntary registration is allowed at any turnover. If you sell mainly to other VAT-registered businesses, voluntary registration usually helps. Your customers reclaim the VAT you charge them, and you reclaim VAT on your costs — a net cash gain.
• The threshold has been frozen since 2024. Inflation alone is pulling more SMEs over it each year. Treating it as a finish line means you will keep crossing it accidentally.
• Customer mix matters more than turnover. Selling to consumers? VAT is a 20% price hike you absorb or pass on. Selling to businesses? It is largely cash-flow neutral.

Who is usually better off voluntarily registered

From our Gravesend client base, the businesses that benefit from voluntary registration tend to look like this:

• B2B consultancies and agencies selling to VAT-registered customers.
• Contractors and tradespeople whose customers are mostly other VAT-registered businesses, or who can reclaim under the Construction Industry Scheme.
• Manufacturers and importers with substantial input VAT they want to recover.
• New companies investing heavily in equipment, vehicles or software before earning much revenue — the first 12 months of VAT reclaims often outweigh the admin cost.

For businesses fitting any of these patterns, voluntary registration is often a profit improvement, not a tax cost.

Who is usually better off staying unregistered

Equally, these patterns suggest holding off if you can:

• Service businesses selling mainly to consumers or unregistered businesses, where 20% on top of your price is a real competitive disadvantage.
• Trade businesses with low input VAT, where the reclaim benefit is small.
• Lifestyle businesses where the admin overhead of quarterly VAT returns outweighs any benefit.

If you fall into this group and are creeping towards £90,000, deliberate revenue management — pricing, scope, capacity — can keep you below the threshold legitimately.

The Flat Rate Scheme trap

The Flat Rate Scheme is intended to simplify VAT for smaller businesses. You charge customers the normal 20%, but pay HMRC a lower percentage (industry-specific, typically 9.5%–16.5%) and keep the difference. It sounds attractive and was, for many years.

The catch is the “limited cost trader” rule introduced in 2017. If your VAT-inclusive goods spend is less than 2% of your VAT-inclusive turnover (or less than £1,000 a year), you are deemed a limited cost trader and pay a flat 16.5%, which almost wipes out the benefit. Service businesses with low goods spend — consultancies, agencies, contractors — very often fall into this category.

We re-test the Flat Rate Scheme position for our clients each year. A scheme that worked in 2020 may now be costing you money.

Three timing tricks that often save Kent SMEs money

1. Spread big-ticket sales across two months if you are approaching the threshold. The 12-month rolling test is unforgiving, but the 30-day forward test gives you some control if you can avoid concentrating large invoices.
2. Register early if you have planned capital expenditure. Pre-registration VAT can be reclaimed on goods bought within four years and services within six months of registration, but the rules are tighter than they look. Registering before a significant purchase is cleaner.
3. Time deregistration around your customer mix changing. If you have shifted from B2B to B2C and your turnover has fallen below £88,000, deregistering on the right date can save 12 months of unnecessary VAT.

What the decision looks like in practice

For our SME clients across Gravesend and Kent, the VAT registration conversation usually follows the same structure: who do you sell to, what is your cost mix, what are your growth plans for the next 12 months, and how much admin can you absorb? Twenty minutes of that conversation is usually enough to give a clear recommendation.

If you are within striking distance of the threshold, or already over it but unsure whether your scheme choice is still right, the cost of getting it wrong runs to thousands of pounds a year. The cost of a structured review is a fraction of that.