If you’re a dentist in the UK, tax is likely one of the most significant (and often most misunderstood) parts of your financial life. With high earning potential comes increased complexity, and without proper planning, it’s easy to pay far more tax than necessary. Episode 3 of our podcast is a tax special, and explores the considerations dental clinicians should be thinking about when it comes to their tax liability. In the episode, Just4Dentists partners Martin Febery and Andrew Brown walk us through what to look out for, how to manage your tax efficiently.
Whether you’re an associate, a practice owner, or operating through a limited company, understanding how to approach tax strategically can have a major impact on your long-term financial wellbeing.
Why tax planning matters more than you think
For many dentists, tax is something that gets attention once a year. Usually around the self-assessment deadline in January. But in reality, by that point, most of the important decisions have already been made.
Tax planning isn’t about submitting your return. It’s about what you do before the end of the tax year. The UK tax year ends on 5th April, and this is the date that truly matters. Once it passes, your ability to reduce your tax bill for that year is extremely limited. Pension contributions, ISA allowances, and other tax-saving opportunities are effectively locked in.
This is why dentists who plan ahead consistently put themselves in a stronger financial position than those who leave things until the last minute.
The £100,000 tax trap explained
One of the most common and costly issues dentists face is the £100,000 income threshold. Once your income exceeds this level, you begin to lose your personal allowance, which creates an effective tax rate of around 60% on income between £100,000 and £125,140.
Many dentists fall into this trap without realising it, especially after a strong year of earnings. The frustrating part is that this situation is often avoidable with relatively simple planning.
Making pension contributions before the end of the tax year can reduce your taxable income and potentially bring you back below the £100,000 threshold. Without that forward planning, however, the opportunity is lost, and you’re left dealing with the consequences months later when submitting your return.
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Why forward planning makes all the difference
The idea of tax planning can feel overwhelming, but in practice, it doesn’t require a huge amount of time or effort. What it does require is consistency.
Dentists who keep their financial records up to date throughout the year have a much clearer picture of their income and expenses. This makes it far easier to estimate where they’ll land by the end of the tax year and take action if needed.
By contrast, relying on a last-minute collection of receipts or outdated spreadsheets makes it almost impossible to make informed decisions. By the time everything is organised, the deadline has usually passed.
This is where simple systems like using cloud-based accounting software, can make a meaningful difference. Not only does it reduce stress, but it also gives you control over your financial position in real time.
Using pensions to reduce your tax bill
For dentists, pensions remain one of the most effective tools for tax efficiency. Contributions benefit from tax relief at your highest rate, meaning a portion of what you would have paid in tax is instead invested for your future.
Over time, those investments grow free from tax, and when you eventually access your pension, you can typically take 25% as a tax-free lump sum.
There is also an additional opportunity that many dentists overlook: the ability to carry forward unused pension allowances from the previous three tax years. This can be particularly valuable in a high-earning year, allowing you to make a larger contribution and significantly reduce your tax liability.
However, pensions are not without complexity. High earners may be affected by tapered annual allowances, and contributing too much can result in tax charges. For this reason, professional advice is especially important when making larger contributions.
Pension vs ISA: finding the right balance
A common question among dentists is whether to prioritise pensions or ISAs. The answer depends largely on your goals and your need for flexibility.
Pensions offer immediate tax relief and are highly efficient from a long-term perspective, but the trade-off is that your money is locked away until later in life. ISAs, on the other hand, don’t provide upfront tax relief, but they allow your investments to grow tax-free and can be accessed at any time.
In practice, many dentists benefit from using both. Pensions can be used to reduce tax and build long-term wealth, while ISAs provide flexibility for medium-term goals such as property purchases, career breaks, or supporting family.
Making tax digital: a shift in how dentists manage tax
The introduction of making tax digital represents a significant shift in how tax is managed in the UK. Rather than submitting a single annual return, many self-employed dentists will soon be required to keep digital records and provide quarterly updates to HMRC.
For those earning over £50,000, this change is approaching quickly.
At first glance, this may feel like an additional administrative burden. However, it also presents an opportunity. By moving to digital systems and reviewing finances more regularly, dentists gain better visibility over their income and can make more informed decisions throughout the year.
Instead of tax being a once-a-year event, it becomes an ongoing process and one that supports better planning rather than last-minute stress.
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The Lifetime ISA: a useful but overlooked tool
For dentists earlier in their careers, the Lifetime ISA can be a valuable addition to their financial strategy. It allows you to save up to £4,000 per year, with the government adding a 25% bonus.
This can be used either towards a first home or accessed later in life, making it a hybrid between a savings tool and a retirement supplement. While it won’t replace a pension, it can complement one, particularly for those looking to maximise all available allowances.
Understanding the different types of tax
As your career progresses, you may encounter different forms of taxation depending on how you structure your income.
Income tax applies to your earnings as an associate or employee, while corporation tax becomes relevant if you operate through a limited company. If you extract profits from a company, dividend tax comes into play, and if you sell assets such as investment property, you may be liable for capital gains tax.
While these concepts can feel complex, having a basic understanding of how they interact is important. Especially if you are considering changes to how you operate financially.
The key takeaway: start earlier than you think
If there’s one consistent theme across all aspects of tax for dentists, it’s this: timing matters.
The difference between proactive planning and reactive filing can amount to thousands of pounds each year. Dentists who take the time to understand their position, track their finances, and act before key deadlines are far better placed to protect and grow their income.
Tax doesn’t need to be overwhelming, but it does require attention. And the earlier you start, the more options you have.
Final thoughts
Dentistry is a demanding profession, and it’s easy to push financial planning to the side. But taking control of your tax position is one of the most impactful steps you can take for your future.
By planning ahead, using the right tools, and seeking expert advice when needed, you can reduce unnecessary tax, avoid common pitfalls, and build a more secure financial foundation.
Contact Just4Dentists to speak to a partner, as receive tailored advice unique to your situation.
