Understanding when your dental practice needs VAT registration is critical for staying compliant with HMRC. The rules catch practice owners off guard more often than almost any other tax area, partly because most dental income is exempt from VAT and partly because the threshold only applies to the taxable slice of your turnover. Get the distinction right and you may never need to register at all.
The VAT registration threshold is £90,000. It was raised from £85,000 on 1 April 2024 and remains £90,000 for the 2026/27 year. There is no further increase announced. The deregistration threshold is £88,000. The key point for dentists is that only your taxable (non-exempt) turnover counts toward the £90,000 figure, so the headline number tells only part of the story.
Why Most Dental Income Does Not Count Toward the Threshold
This is the single most important fact about dental practice VAT registration, and the one most often misunderstood. Dental care, like other medical care, is VAT-exempt. Under VATA 1994 Schedule 9 Group 7, dental treatment and dental prostheses supplied by a registered dentist or dental care professional are exempt from VAT. That applies whether the treatment is NHS-funded or privately paid.
Exempt is a specific VAT status. It is not the same as "outside the scope" and it is not the same as "zero-rated". Because dental care is exempt rather than taxable, that income does not count toward the £90,000 registration threshold at all. A practice could turn over several hundred thousand pounds in clinical dentistry and still have no obligation to register for VAT, because none of that income is taxable turnover.
What Is Taxable for a Dental Practice
The exemption covers treatment with a therapeutic purpose: examinations, fillings, extractions, root canal work, crowns, dentures, hygiene appointments and the rest of routine clinical dentistry. What falls outside the exemption is purely cosmetic or aesthetic treatment with no therapeutic purpose. The most common examples are cosmetic facial aesthetics (such as anti-wrinkle injections and dermal fillers given for appearance only) and tooth whitening. These are standard-rated at 20%, and only this taxable income counts toward the £90,000 threshold.
| Dental supply | VAT treatment | Counts toward £90,000? |
|---|---|---|
| NHS-funded clinical treatment | Exempt (Sch 9 Group 7) | No |
| Private clinical treatment (fillings, crowns, dentures, hygiene) | Exempt (Sch 9 Group 7) | No |
| Dental prostheses by a registered professional | Exempt | No |
| Cosmetic facial aesthetics (no therapeutic purpose) | Standard-rated at 20% | Yes |
| Tooth whitening (cosmetic) | Standard-rated at 20% | Yes |
The line between therapeutic and cosmetic can be genuinely difficult, particularly for facial aesthetics, where the same treatment can be clinical in one context and cosmetic in another. We cover that boundary in detail in our guide to facial aesthetics and VAT for UK dental practices.
When to Register for VAT as a Dentist
You must register for VAT when your taxable turnover over the previous rolling 12 months exceeds £90,000, or when you expect it to exceed £90,000 in the next 30 days alone. The rolling test is the one that catches people: it is not your calendar year or your accounting year, but the most recent 12 months measured at the end of every month.
If your taxable turnover goes over £90,000 in a given month, you must register within 30 days of the end of that month, and your registration takes effect from the first day of the second month after you went over. Miss the deadline and HMRC can charge a late-registration penalty as well as the VAT you should have collected.
For most clinical-only practices this test is academic, because their taxable turnover is effectively nil. The practices that need to watch the threshold are those with a growing book of cosmetic facial aesthetics, tooth whitening or other standard-rated work. It is the taxable line, not total turnover, that you monitor.
Special Considerations for Dental Practices
Mixed NHS and Private Income
NHS and private clinical income are both exempt, so the NHS-private split does not in itself create a VAT registration question. Where it matters is partial exemption (covered below) once you do have taxable supplies. Understanding your NHS-private mix remains important for general practice accounting even where VAT registration is not in play.
Associate to Practice Owner Transition
Associates moving into practice ownership often assume that rising turnover automatically pushes them toward VAT registration. It does not, if that turnover is exempt clinical income. The question to ask is how much of the new practice's income is standard-rated. Associates considering their own position should read our guide on whether to register for VAT as an associate dentist.
Multiple Practice Ownership
If you own multiple practices under the same legal entity, their combined taxable turnover counts toward the single £90,000 threshold. Separate limited companies have separate thresholds, but HMRC will scrutinise artificial arrangements that appear designed to avoid registration (a practice known as disaggregation). Groups with standard-rated work across several sites face the most complex picture, which we examine in our guide to multi-site dental group VAT, partial exemption and cost sharing.
Partial Exemption: The Real Complexity
Because the bulk of a dental practice's income is exempt, any practice that does register for VAT will be a partially exempt business. This is where dental VAT becomes genuinely technical. You can fully reclaim input VAT on costs that relate to your taxable (standard-rated) supplies, you cannot reclaim input VAT that relates to your exempt supplies, and you have to apportion the VAT on overheads that relate to both.
Practices new to registration are often surprised that registering does not unlock a blanket right to reclaim VAT on equipment, refurbishment or laboratory costs. Most of those costs relate to making exempt clinical supplies, so the VAT on them is not recoverable. Only the proportion attributable to taxable work can be reclaimed, subject to the partial exemption rules and the de minimis limits. This is the heart of why voluntary registration is rarely attractive for a clinical-only or clinically-dominated practice.
Ongoing VAT Obligations Once Registered
If your taxable turnover does cross the threshold and you register, your practice must:
- Submit VAT returns (usually quarterly, under Making Tax Digital)
- Charge VAT at 20% on your standard-rated supplies, such as cosmetic facial aesthetics and tooth whitening
- Apply partial exemption to recover input VAT correctly
- Issue compliant VAT invoices for your taxable supplies
- Keep VAT records for six years
- Pay the VAT due or claim any refund
The administrative burden of running partial exemption alongside a busy clinical book is significant, which is why many practices work with specialist dental accountants to manage VAT compliance. Our full reference on the wider rules is the dental practice VAT and compliance guide.
What You Should Do Now
The threshold is settled at £90,000 and the framework is stable, so the priority is simply knowing where you stand.
Separate Your Taxable Income
The first step is to identify which of your income is standard-rated. For most practices that is the cosmetic facial aesthetics and tooth whitening line, if any. Track that figure separately in your practice management system. The £90,000 threshold applies to that taxable line on a rolling 12-month basis, not to your total turnover.
Review the Therapeutic Boundary
If you offer facial aesthetics, get clarity on which treatments are therapeutic (exempt) and which are cosmetic (standard-rated), because that classification directly drives whether you approach the threshold. The boundary is the most contested area in dental VAT and is worth professional review.
Plan Partial Exemption Before You Register
If you can see your taxable turnover heading toward £90,000, model the partial exemption position before you register rather than after. Understanding how much input VAT you will actually recover, and how the de minimis tests apply to your mix, avoids unpleasant surprises. This is also relevant when you consider broader profit extraction strategies or an eventual exit.
VAT for dental practices is unusual precisely because the default position is exemption, not taxation. Get the taxable versus exempt classification right, monitor only the taxable line against the £90,000 threshold, and most of the apparent complexity falls away. Where it does not, specialist advice on partial exemption is well worth it.