The single most important fact about dental practice VAT is also the one most often stated wrongly: dental clinical care is VAT-exempt. The supply of dental care, and of dental prostheses, by a person on the dentists' register or the dental care professionals register is exempt under Schedule 9 Group 7 of the VAT Act 1994, whether that care is NHS-funded or paid for privately. Exempt income does not count toward the £90,000 VAT registration threshold, and a practice cannot reclaim the VAT it incurs on costs that relate to exempt care.
That distinction drives every other decision in this guide: whether you must register, what you can reclaim, and how a mixed practice apportions its input VAT. Get the exempt-versus-standard-rated line right first, and the rest follows.
Exempt vs standard-rated: the line that matters
VAT exemption for dental care turns on the supply being medical care, which HMRC defines by its principal purpose: protecting, maintaining or restoring the health of the patient. A check-up, a filling, a root canal, a crown fitted to restore function, periodontal treatment, an extraction, a denture for a named patient: all of these are exempt, on the NHS or in a private chair, because their principal purpose is therapeutic.
By contrast, treatment whose principal purpose is purely cosmetic or aesthetic with no therapeutic benefit is standard-rated at 20%. The exemption is not a blanket cover for everything a dentist does, and HMRC scrutinises the borderline. The two watch-items are tooth whitening carried out for cosmetic reasons and facial aesthetics such as anti-wrinkle injections and dermal fillers supplied for cosmetic purposes. Retail sales of products, such as toothbrushes, whitening kits sold over the counter and similar goods, are also standard-rated.
The table below sets out where common supplies usually fall. It is a guide, not a substitute for assessing each case on its facts, because the principal purpose is what governs the answer.
| Typical treatment or supply | Usual VAT treatment | Why |
|---|---|---|
| NHS examinations, fillings, extractions, root canals | Exempt | Medical care, therapeutic purpose |
| Private restorative work (crowns, bridges, dentures to restore function) | Exempt | Medical care, therapeutic purpose |
| Periodontal and preventive treatment | Exempt | Maintaining and restoring oral health |
| Tooth whitening for purely cosmetic reasons | Standard-rated | No therapeutic purpose |
| Facial aesthetics (cosmetic anti-wrinkle, fillers) | Standard-rated | Cosmetic, principal-purpose assessment required |
| Over-the-counter retail products | Standard-rated | Supply of goods, not medical care |
Where a single treatment has mixed elements, look to the principal purpose rather than splitting hairs over individual components. We work through the test, and the documentation it demands, in our companion guide to cosmetic versus therapeutic dental work and the principal-purpose test.
When VAT registration is actually required
You must register for VAT once your taxable turnover exceeds £90,000 on a rolling 12-month basis (the threshold for 2026/27, unchanged since it rose from £85,000 on 1 April 2024). You must also register if you expect to exceed £90,000 in the next 30 days alone.
The word that does the work here is taxable. Only standard-rated supplies count toward the threshold. Exempt clinical care, however large, does not. The practical consequences:
- A practice doing only NHS and therapeutic private work makes no taxable supplies, so it never crosses the threshold and has no obligation to register, regardless of total turnover.
- A practice offering cosmetic-only treatment, facial aesthetics or product retail must add up only that standard-rated income and watch it against £90,000.
- A busy practice can turn over several million pounds of exempt care and still sit below the registration line, because none of that exempt income is taxable turnover.
If you do cross the threshold, you have until the end of the month following the month in which you exceeded it to notify HMRC, and registration takes effect from the first day of the second month. Missing the deadline can mean penalties and VAT charged retrospectively on your standard-rated supplies. Our detailed walk-through of the dental practice VAT registration threshold and requirements covers the rolling-12-month test in full.
Voluntary registration: rarely worthwhile for a dental practice
You can register voluntarily before reaching the threshold, and some businesses do so to reclaim input VAT on a large purchase. For a dental practice this is usually a poor trade. Because clinical care is exempt, registering does not let you reclaim VAT on the costs of that care. It only lets you reclaim VAT attributable to your standard-rated supplies, while obliging you to charge 20% to cosmetic patients and file returns. Unless you have a genuine and growing block of taxable work, voluntary registration tends to add compliance without adding recoverable VAT.
Irrecoverable input VAT: the cost few owners budget for
Outside a few partly exempt scenarios, the default position for a dental practice is that the VAT it pays on its costs is irrecoverable. VAT on surgery fit-out, dental chairs, imaging equipment, consumables, rent where VAT is charged, and professional fees attributable to exempt care cannot be reclaimed. That VAT becomes part of the cost of the asset or expense.
For qualifying plant and equipment, the silver lining is that the VAT-inclusive cost feeds your capital allowances claim, so the irrecoverable VAT is relieved against profits over time rather than recovered through a VAT return. It is worth stressing the point that catches people out: even a practice that is VAT-registered (because it makes some standard-rated supplies) still cannot reclaim the input VAT attributable to its exempt clinical income. Registration does not unlock recovery on the exempt side of the business.
Partial exemption: mixed practices
A practice that makes both exempt supplies (clinical care) and taxable supplies (cosmetic-only work, some retail, certain lab arrangements) and is registered for VAT is partially exempt. It can recover only the input VAT attributable to its taxable activity. The standard method attributes input VAT in three categories:
- Directly attributable to taxable supplies (for example, materials for a course of cosmetic whitening): fully recoverable.
- Directly attributable to exempt supplies (clinical consumables, NHS-related costs): irrecoverable.
- Residual or overhead (rent, utilities, reception, practice management software): recovered using the standard method, which is taxable turnover divided by total turnover, rounded up to the next whole percentage.
The de minimis test
If your exempt input VAT is small, you may be able to recover all of it. The de minimis limits, which apply together, are exempt input VAT averaging no more than £625 a month (£7,500 a year) AND no more than 50% of total input VAT. Pass both limbs and you recover everything, which keeps compliance simple for a practice with only a modest slice of taxable work. Where the standard method produces an unfair result, a special method (for example, based on floor area or staff time) can be agreed with HMRC. A partial-exemption annual adjustment then trues up the four quarterly recoveries after each VAT year. We set this out in full in our guide to partial exemption and input VAT recovery for dental practices.
The Capital Goods Scheme: large property spend
Where a partially exempt practice spends £250,000 or more (VAT-exclusive) on land or a building, the Capital Goods Scheme applies. Rather than fixing recovery in the year of purchase, the scheme spreads input-VAT recovery over a 10-year adjustment period (the equivalent figure is £50,000 and five years for a single computer). Each interval, recovery is recalculated against that year's taxable-use percentage, clawing back or refunding VAT as the exempt-versus-taxable mix shifts. A final adjustment crystallises when the asset is sold or on deregistration.
A surgery refurbishment or a freehold purchase by a practice with some taxable income is the classic trigger, and it sits alongside the same fit-out spend that drives your capital allowances claim. Our dedicated guide to the Capital Goods Scheme on a dental practice refurbishment works through a 10-year example.
Mixed and borderline treatments: documentation
Because the exempt-versus-standard-rated line turns on the principal purpose, your clinical records are your VAT evidence. For any treatment that could be read as cosmetic, your notes should make clear why it was clinically indicated: the condition treated, the functional benefit, and the therapeutic rationale. Tooth whitening and facial aesthetics are the areas HMRC is most likely to test, so a contemporaneous record of purpose is the difference between a defensible exempt treatment and an assessment for unpaid output VAT.
Laboratory work follows the treatment it supports. A prosthesis supplied for a named patient as part of restorative care is exempt; the VAT analysis of lab costs flows from whether the final treatment is exempt or standard-rated, so keep records that link each lab item to the treatment it served.
Record keeping and Making Tax Digital
A VAT-registered practice must keep digital VAT records and file returns through Making Tax Digital compatible software. Given the exempt-versus-taxable complexity, your records should clearly evidence:
- The clinical purpose behind any treatment treated as exempt medical care.
- The split of income between exempt and standard-rated supplies.
- The attribution of input VAT to directly taxable, directly exempt and residual categories.
- Supporting documentation for every reclaim and for the annual partial-exemption adjustment.
Digital records are fine, provided they are accessible, complete and backed up.
Deregistration when taxable supplies fall away
The flip side of registration is deregistration. A registered practice may deregister when its taxable turnover falls below the deregistration threshold of £88,000 (note that this is lower than the £90,000 registration threshold), or when it stops making taxable supplies altogether, for example by dropping cosmetic work to operate as a fully exempt NHS practice. On deregistration a deemed supply can bring VAT to account on assets on which input VAT was previously recovered, subject to a £1,000 de minimis, and a final Capital Goods Scheme adjustment may fall due. Notify HMRC within 30 days.
VAT and practice sales
When a dental practice changes hands, the sale of the business as a transfer of a going concern is treated as outside the scope of VAT, provided the statutory conditions are met (the buyer continues the same kind of business, is or becomes VAT-registered where relevant, and there is no significant break in trading). Where those conditions are not met, VAT can apply to elements of the sale and materially affect the consideration. This is one of the items a buyer should test during practice acquisition financial due diligence, because an unexpected VAT charge, or an unresolved Capital Goods Scheme position on the premises, can reshape the deal.
Getting it right
VAT for dental practices is not about charging patients 20%. For the overwhelming majority of clinical income it is about correctly identifying exempt supplies, keeping standard-rated work separate, recovering only what is genuinely recoverable, and documenting the principal purpose where the line is fine. The interaction of exemption, the £90,000 taxable-turnover threshold, partial exemption and the Capital Goods Scheme is where mistakes become expensive, so a periodic VAT review is worthwhile whenever your treatment mix changes or you expand into cosmetic services. Specialist dental accountants who work with these rules every day can keep your registration position correct and your input-VAT recovery defensible.