How to Claim Allowable Expenses as a Dentist

If you’re working as a dentist in the UK, understanding how to claim allowable expenses can significantly reduce your tax liability. If you don’t claim them properly, you could end up paying more tax than you should.

In this guide, we’ll cover everything you need to know about allowable expenses for dentists, including:

• Allowable vs. Non-allowable expenses
• Common expenses you can claim as a dentist
• How to claim allowable expenses as a dentist – step-by-step
• And much more…

Let’s break it down!

Claiming Allowable Expenses Is Your Biggest Business Discount: How?

When you’re running a dental practice, tax relief is basically like getting a massive “business discount” from the government. This is because dental practices are expensive to operate, and ignoring these benefits is like throwing away thousands of pounds. In fact, that money could be used to buy new equipment or boost your own income instead.

The biggest win is how the government helps you buy gear. You need high-tech kits like dental chairs, X-ray units, and digital scanners to stay competitive. Through capital allowances such as the Annual Investment Allowance (AIA) or Full Expensing for limited companies, you can often deduct the full cost of this equipment from your taxable profits in the year of purchase.

When you invest £40,000 in new equipment, knowing you can claim allowable expenses as a dentist makes that big purchase much easier to handle, as your tax bill drops right away.

And it’s not only about the major equipment; using tax relief properly keeps your cash flow healthy. It means you have the money to pay your staff well and keep your supplies stocked. Plus, when you eventually decide to hang up the drill and sell the practice, having a solid tax strategy in place means you get to keep a much bigger slice of that final sale price.

Simply put, if you claim allowable expenses as a dentist, it’s just the most sensible way to ensure your hard work actually benefits you financially.

Allowable vs. Non-Allowable Expenses for Dentists

For UK tax, an expense is only allowable if it is incurred “wholly and exclusively” for your dental work, not for personal use.

• Allowable: Costs that are necessary for you to work as a dentist. If you didn’t have the job, you wouldn’t have the expense.
• Unallowable: Costs that have a “dual purpose.” For example, you need to eat to live, so your standard lunch isn’t deductible, even if you eat it at the practice. Similarly, a suit you wear to the clinic could technically be worn to a wedding, so it isn’t “exclusively” for work.

How to Claim Allowable Expenses as a Dentist

To claim your allowable expenses, you simply need to follow a clear cycle throughout the tax year. Here is the step-by-step process to claim allowable expenses as a dentist:

Step 1: Record Your Spending as You Go

The most important rule is that you cannot claim for what you cannot prove. Every time you buy something for practice, you need to keep the receipt or invoice. Many dentists find it easiest to use a dedicated business bank account for all professional costs.

This way, your personal and work spending never gets mixed up. You should also try to digitise these receipts using a receipt-scanning or bookkeeping app. Having a clear digital trail makes claiming allowable expenses as a dentist much smoother.

Note that HMRC requires you to keep these records for at least five years after the 31 January submission deadline of the relevant tax year.

Step 2: Identify What Is for Work Only

After you’ve got your paperwork sorted, the next step is figuring out which expenses were purely for business purposes. HMRC has this “wholly and exclusively” test they use to determine what qualifies. So things like your GDC registration fees and professional indemnity insurance are completely claimable since they’re 100% work-related.

But when it comes to items like your mobile phone, you’ve got to be realistic about the split between personal and business use. If you use your phone half for work and half for home, you only claim half of the bill.

Step 3: Total Your Costs into Simple Categories

At the end of the tax year, you need to add up your spending. The UK tax year runs from 6 April to 5 April. To make your tax return easier, group these costs into clear expense categories. These usually include professional fees, clinical supplies, and travel mileage.

For travel, most dentists find it simplest to use the HMRC flat rate of 45p per mile for the first 10,000 business miles, and 25p per mile thereafter. Having these totals ready makes the final process of claiming allowable expenses as a dentist much faster and less stressful.

Step 4: Subtract the Totals on Your Tax Return

The final step happens when you file your Self-Assessment tax return. You enter these category totals into the expenses section of the form. This is the moment your business discount actually happens.

These totals are subtracted from your total earnings. You only pay tax on what’s left after that subtraction. When you claim allowable expenses as a dentist properly, you’re essentially reducing the amount of income that gets taxed. The result? You get to keep more of the money you’ve worked hard to earn.

Expenses You Can Claim as a Dentist

Most dentists miss out on savings because they don’t realise just how many everyday costs are actually deductible. When you claim allowable expenses as a dentist, here is a breakdown of the most common costs you can include:

1. Professional Fees & Subscriptions: Membership fees for the General Dental Council (GDC), British Dental Association (BDA), and professional indemnity insurance (e.g., Dental Protection or DDU) are fully deductible.
2. Clinical Supplies & Laboratory Fees: Costs for dental materials, consumables (gloves, masks), and fees paid to dental laboratories for crowns, bridges, or dentures.
3. Training & CPD: Continued Professional Development (CPD) courses, seminars, and associated travel are allowable if they update or maintain existing skills.
   • Note: Training that qualifies you for an entirely new profession or major new specialisation is usually not allowable.
4. Travel & Mileage: You can claim 45p per mile for your first 10,000 business miles. After that, the rate drops to 25p per mile. This applies to travel for training or visiting other practices. However, you cannot claim this for your regular commute. In addition, these rates also cover any travel to visit patients at their homes. As a result, it is worth keeping a detailed mileage log throughout the tax year.
5. Clothing & Laundry: If you wash your own branded scrubs or protective clothing, you can claim the actual cleaning costs. HMRC may allow flat-rate expenses for uniform maintenance depending on the profession.
6. Equipment & Technology: Smaller items like loupes, handpieces, and office software are deductible. Larger assets like dental chairs are typically claimed via Capital Allowances or the Annual Investment Allowance (AIA).
7. Use of Home: If you manage administrative tasks from home, you can claim a proportion of household bills (heat, light, internet) or use HMRC’s simplified flat-rate allowances.

Can I Claim for My Daily Commute to the Dental Practice?

Generally, no. This is because HMRC views the journey between your home and your permanent workplace as private travel.

However, if you travel between different practice locations during your working day, those miles are usually claimable.

In addition, you can claim allowable expenses as a dentist for travel to a “temporary” workplace. A good example would be a one-off training event or a different clinic for a single shift. As a result, it is worth keeping a log of any travel that isn’t your standard morning commute.

Can Dentists Claim GDC and BDA Fees as Expenses?

Yes, fees paid to the GDC and the BDA are allowable. This is because both are approved professional bodies directly linked to your dental work. Therefore, you should include these costs in the professional subscriptions section of your tax return.

Can I Claim My Scrubs and Uniforms?

Generally, you can claim for any clothing that is strictly for clinical use. In addition, you can usually claim back reasonable laundry costs for keeping them clean. However, you cannot claim for everyday clothes. This applies even to smart outfits you only wear at practice, as HMRC views these as having a personal use.

What About Claiming Expenses for My Mobile Phone Bill?

When your personal smartphone serves double duty as a work device, you have the opportunity to claim allowable expenses as a dentist. Remember that if you are a self-employed associate, you can only claim the percentage that reflects your actual business use.

This means you need to work out how much of your bill is for professional tasks, like calling patients or laboratories.

Hence, it is important to keep records of these work communications. In turn, if HMRC ever asks for proof, you will have the documentation ready to back up your claim.

Can I Claim for ‘New’ Training?

HMRC allows you to claim for training that updates your current skills, like a new technique in endodontics. However, the course must relate directly to your existing dental practice. As long as it builds on your current work, it counts as an allowable expense.

However, if you are training for a different career or getting your very first dental qualification, you generally can’t deduct those costs. This is because HMRC views these as ‘new’ skills rather than maintenance for your current job. In their eyes, you are making a long-term investment in your future earning potential. Consequently, these specific costs are non-deductible for tax.

That said, claiming allowable expenses as a dentist for regular clinical updates remains an important way to save on your tax bill.

Do I Need to Keep Every Single Receipt?

Absolutely. This is because Making Tax Digital for Income Tax officially is scheduled to apply to self-employed individuals earning over £50,000 from April 2026. Consequently, keeping digital records is now a legal requirement for dentists with a qualifying income over £50,000.

You don’t need to post these receipts with your tax return. However, you must have them ready if HMRC asks for proof later on. Most dentists just use a scanning app on their phone now. This makes the whole process of claiming allowable expenses as a dentist much more organised.

What Happens if I Claim Something HMRC Later Disagrees With?

When HMRC reviews or investigates your tax return, they might decide some of your expenses don’t qualify. If this happens, they’ll recalculate what you owe and send a new bill for the extra tax. They can also add interest or penalty fees on top.

The best way to protect yourself is by keeping good records. You need to be able to prove that every expense you claim is completely related to running your dental practice. Having this paperwork ready helps you avoid costly tax disputes with HMRC.

This is an area where working with an accountant who understands healthcare can save a lot of tax over time. It also ensures you are claiming allowable expenses as a dentist correctly and safely.

The Bottom Line

Taking the time to track and claim allowable expenses as a dentist is the best way to protect your income and lower your tax bill.

Staying organised throughout the year also stops any last-minute panic or a massive, unexpected bill when the January deadline approaches.

If you need an expert healthcare accountant, CruseBurke is here to assist you.

How CruseBurke Can Help

At CruseBurke, we’ve made it our mission to protect the finances of those who spend their lives protecting others. Our specialist accountants for dentists understand the complexities of your finances.

If you need help with any accounting service, such as bookkeeping, payroll, year-end accounts, or NHS Pension schemes, reach out to us today. We’d love to discuss how we can make your life easier and your practice more profitable!

Disclaimer: All the information provided in this article “How to Claim Allowable Expenses as a Dentist” is general in nature. It does not intend to disregard any of the professional advice