Incorporating a Dental Practice in 2026: Is a Limited Company Right for You?

Incorporating a dental practice, by trading through a limited company rather than as a sole trader or partnership, is one of the most financially significant decisions a dental professional can make. It is also one where the answer has changed materially in 2026. The April 2026 dividend tax rate increase, the BADR CGT rate rise to 18%, and the ongoing complexity of NHS pension access for incorporated practitioners have collectively shifted the calculation in ways that make advice from before 2026 potentially unreliable.

For dental associates and practice owners considering incorporating a dental practice, the tax saving can be real and substantial, but so can the hidden costs. The possible loss of NHS pension access on associate income, the administrative burden of running a limited company alongside a busy clinical practice, and the irreversibility of certain structural decisions all deserve serious weight before any incorporation proceeds.

This guide sets out the complete picture for dental professionals considering incorporation in 2026. It covers how the tax position works, what has changed in 2026, the critical NHS pension complication that most guides ignore, when incorporation is and is not financially worthwhile, and the specific planning steps required before any company is formed.

How the Tax Position Works: The Basic Case for Incorporation

The tax advantage of operating through a limited company rather than as a sole trader rests on three structural features of the UK tax system that together produce a lower overall tax burden for incorporated practitioners, at least in the right circumstances.

Corporation tax is lower than income tax at higher rates. A limited company pays corporation tax on its profits, 19% for profits below £50,000, 25% above £250,000, with a marginal rate between those thresholds. A sole trader pays income tax on equivalent profits at 40% in the higher rate band or 45% in the additional rate band. For a dental associate generating £120,000 of net self-employment profit, this headline difference is significant, but it is only the first layer because extracted company profits may then attract dividend tax.

Profit extraction can be managed through salary and dividends. Rather than drawing all profits as salary, which attracts income tax and NIC at employment rates, an incorporated practitioner can take a modest salary, typically set at £12,570, the personal allowance, or at £5,000 to avoid triggering employer NIC, and extract the remaining profit as dividends. Dividends are taxed at lower rates than equivalent salary income. From April 2026, the dividend rates are: basic rate 10.75%, higher rate 35.75%, additional rate 39.35%. The basic and higher rates are 2 percentage points higher than before April 2026, which has narrowed the advantage of dividend extraction compared to prior years, but the additional rate remains 39.35%.

Timing and control of income. Operating through a company allows profit to be retained within the company and extracted in future tax years when personal income is lower, for example, in a year with significant pension contributions, or in the year before retirement when other income falls. This flexibility over the timing of personal income tax liability is a genuine planning advantage that sole traders do not have.

The combined effective rate under incorporation. For a dental professional extracting profit through salary at the personal allowance plus dividends at the higher rate, the combined effective rate depends on the company’s corporation tax rate and how much profit is distributed. If a profit is subject to 25% corporation tax and the remaining amount is distributed at the 35.75% higher dividend rate, the combined marginal rate is approximately 51.8%, before considering allowances or salary. If the profit is subject to 19% corporation tax, the equivalent combined rate is approximately 48.0%. This compares with approximately 42% on relevant marginal sole trader profit where 40% income tax and 2% Class 4 NIC apply. Retained profit, salary, pension contributions and corporation tax marginal relief therefore need to be modelled together.

For an additional rate taxpayer, a dentist with net profits above £125,140, the relevant marginal sole trader rate is generally 47% in total, comprising 45% income tax and 2% Class 4 NIC. If company profits are subject to 25% corporation tax and the remaining amount is distributed at the 39.35% additional dividend rate, the combined marginal rate is approximately 54.5%. At this level the maths is less clear cut, and pension planning or profit retention may produce better results than incorporation followed by immediate extraction.

Key point: Incorporation does not automatically save tax. The financial benefit depends on your specific income level, the proportion of profit you need to extract immediately versus retain in the company, and critically, as covered below, the NHS pension implications of your specific working arrangement. A decision based solely on a comparison of tax rates without modelling the full picture, including pension, produces an incomplete and potentially misleading answer.

What Has Changed in 2026: Three Factors That Shift the Calculation

The April 2026 dividend tax rate increase. From 6 April 2026, the basic and higher dividend tax rates rose by 2 percentage points. The higher rate dividend tax is now 35.75%, up from 33.75%, while the additional rate remains 39.35%. For a dental company director extracting £80,000 of dividends wholly within the higher rate band, this additional 2% costs £1,600 per year in additional personal tax. The change does not reverse the case for incorporation at higher income levels, but it does reduce the net annual saving, and for dentists with moderate income levels where the saving was already marginal, it may tip the balance against incorporation.

The BADR CGT rate rise to 18%. Business Asset Disposal Relief, which reduces CGT to 18% on qualifying business disposals up to £1 million of lifetime gains, rose from 14% to 18% on 6 April 2026. This affects the exit value calculation for incorporated dental practices, where the eventual sale of company shares or the liquidation of a company on retirement is often the point at which the accumulated tax savings of incorporation are crystallised. A higher BADR rate means the exit tax cost is greater than it was in 2025/26, which should be factored into any longer-term incorporation modelling.

The £100,000 personal allowance taper. This is not new in 2026 but is worth understanding in the incorporation context. Where a dental company director’s total personal income, salary plus dividends plus any other income, exceeds £100,000, the personal allowance begins to taper. Many dentists who incorporate and then draw a salary at the personal allowance plus dividends discover that rental income, savings interest, or other income sources push them into the taper zone.

Company pension contributions made instead of additional taxable extraction can help keep adjusted net income below the taper threshold and may be deductible for corporation tax, subject to the normal rules, making pension planning a central element of the incorporated dental practice strategy.

The NHS Pension Problem: The Issue Most Guides Do Not Address

This is the single most important and most consistently ignored financial consideration in dental practice incorporation advice. For many dental associates, the NHS pension consideration alone resolves the incorporation question, and not in favour of incorporation.

Why incorporation generally severs NHS pension access. NHS dental associates who are members of the NHS Pension Scheme contribute through a direct contractual relationship between the individual dentist and the dental practice. The association agreement, the contract under which an associate provides clinical services to a practice, must be between the individual GDC-registered dentist and the practice. Where an associate interposes a limited company, the income flows through the company rather than directly to the individual, creating a structural incompatibility with NHS pension membership requirements.

The practical consequence is that a dental associate operating through a limited company generally cannot contribute to the NHS Pension Scheme on their NHS associate earnings. This is confirmed in NHS pension guidance and is a point that Kudos regularly encounters in reviews of practices where associates have incorporated without being advised of this restriction.

What this costs in pension terms. The NHS Pension Scheme’s employer contribution rate is currently 23.7% of pensionable pay in total, with 14.38% collected directly from the practice and the remaining 9.32% funded centrally by NHS England. For a dental associate with £70,000 of NHS pensionable earnings, 23.7% equates to £16,590 of employer scheme funding for the year.

Because the NHS Pension Scheme is a defined benefit arrangement, this contribution figure is not a personal investment pot or a direct measure of the pension benefit earned.

This is not a marginal consideration. Giving up NHS pension membership can materially affect future guaranteed pension income and associated scheme protections. A simple calculation of £16,590 multiplied by twenty years does not measure the value of the lost defined benefits. The correct comparison should model the projected NHS benefits, member contributions and tax relief, alternative pension funding, company tax position and the individual’s expected career pattern.

When incorporation might still work alongside NHS pension access. Some arrangements do allow an associate to maintain NHS pension access while using a company structure for other aspects of their financial affairs. An associate who keeps their NHS work structured directly as a sole trader, maintaining the direct association agreement with the practice, while using a limited company exclusively for private dental work, medicolegal income, or other non-NHS activities, may be able to preserve NHS pension access while capturing the tax efficiency of incorporation on the non-NHS income.

This dual structure is more complex to administer but is sometimes the optimal solution for associates with significant mixed income. Our specialist team for dentists models this dual structure for associates where it is relevant to their specific income mix.

The annual allowance consideration for higher earners. For associates with significant NHS earnings, the NHS pension annual allowance is itself a planning consideration, not just access. The 2015 CARE scheme growth measured using the ×16 multiplier can generate substantial annual allowance usage that interacts with any private pension contributions the associate also makes.

Incorporation that reduces the NHS pensionable earnings figure, by channelling some income through a company rather than as direct associate income, can, in specific circumstances, reduce the pension input amount and therefore reduce the risk of an annual allowance charge. This is an advanced and fact-specific point that should be reviewed by a specialist rather than applied as a general rule.

The NHS Contract Position: Associates and Practice Owners Are Different

A separate but related point is frequently misunderstood: an associate who trades through a personal limited company and a practice owner whose eligible dental corporation holds an NHS contract are not in the same position.

NHS pension guidance states that an associate who trades through a limited company cannot pension their GDS or PDS associate income. However, NHS England confirms that a dental corporation can be eligible to hold a GDS contract, and that a dental corporation or company limited by shares can be eligible to hold a PDS agreement.

This distinction has practical implications for how the company is structured, how NHS income is recognised, how pensionable earnings are treated, and how a transition from sole trader or partnership to an incorporated practice is managed.

Moving an existing NHS contract into a corporate structure may require eligibility checks, commissioner approval and formal novation or contract variation. Any dental practice incorporation involving NHS contract income therefore requires careful legal and financial structuring so the contract and commissioning relationship remain valid throughout the transition.

When Incorporation Is Likely to Be Worthwhile

Taking all of the above into account, incorporation is most likely to be financially worthwhile for a dental professional where the following conditions apply.

The dentist’s income is predominantly from private dental work rather than NHS associate earnings. This means the NHS pension access issue either does not arise or can be managed through a dual structure without significant pension loss.

Net profit from the dental business is consistently above £100,000 per year. At this level the corporation tax position on retained profits, combined with the ability to manage the personal income profile below the £100,000 personal allowance taper, may produce meaningful annual tax savings.

The dentist does not need to extract the full profit as personal income immediately. Being able to retain profit in the company and extract it in future years at lower personal tax rates is a key element of the value of incorporation, and dentists who need to draw all profit to fund living costs lose much of this advantage.

There is a medium to long term plan that allows the accumulated tax savings to be realised through a planned exit, whether retirement, practice sale, or Members’ Voluntary Liquidation, structured to qualify for BADR at 18%.

The administrative cost and compliance burden of running a limited company, including company accounts, corporation tax returns, director’s Self Assessment return, Companies House filings, and dividend administration, is acceptable given the net financial benefit.

When Incorporation Is Unlikely to Be Worthwhile

Incorporation is unlikely to be the right answer where the dental professional relies primarily on NHS associate income and values their NHS pension membership. The potential loss of scheme access may outweigh the company tax advantages for many associates in this position.

Where profit is below approximately £60,000 to £80,000 net, the corporation tax saving on extraction is often insufficient to justify the additional accounting and compliance costs of running a company.

Where the dentist is within five to ten years of retirement, the planning horizon is too short for the accumulated savings to outpace the setup costs, transitional CGT on any existing goodwill, and the increased BADR rate at exit.

Where the dentist has used their BADR lifetime allowance of £1 million on earlier disposals, the exit tax cost from a company increases significantly, since gains above the lifetime limit are taxed at the standard CGT rates of 18% or 24%.

The Planning Steps Before Any Company Is Formed

If after reviewing all of the above you conclude that incorporation is likely to be worthwhile for your specific situation, the following planning steps must be taken before any company is formed, not after.

Model the full financial impact over a realistic time horizon. A three to five year projection showing the net benefit of incorporation, after corporation tax, dividend tax, accounting costs, any pension impact, and exit tax, against the sole trader alternative is the minimum basis for an informed decision. Our dental accounting team produces this modelling as a standard part of the incorporation advice process.

Confirm your NHS pension position before any company is formed. If you are currently an active member of the NHS Pension Scheme, establish precisely how your pension access will be affected by your proposed structure before the company is registered, not afterwards. This requires a clear understanding of your association agreements, the nature of your NHS income, and whether a dual structure is viable for your specific working pattern.

Review the goodwill position. Where you are transferring an existing dental practice or book of private patients to a new company, the goodwill may need to be valued and the transfer structured carefully to avoid an inadvertent CGT disposal at market value. Incorporation Relief can defer a gain arising on the transfer of a business to a company in exchange for shares, but the conditions must be met, and specialist advice is essential before any transfer takes place.

Understand the ongoing compliance obligations. A limited company requires annual company accounts, typically prepared to a Companies House filing standard, a corporation tax return, a director’s personal Self Assessment return, dividend minutes and vouchers for every distribution, and potentially a P11D for any benefits provided through the company.

These are not trivial administrative requirements and the cost of getting them wrong, in HMRC penalties and missed tax opportunities, is real.