What To Do With Surplus Cash in a Medical or Consultant Limited Company

Surplus cash sitting idle in a consultant's limited company is a problem in two directions: it earns a low after-tax return, and if the balance sheet drifts toward investments it can quietly break the company's trading status and cost you Business Asset Disposal Relief on a future wind-up. The most tax-efficient deployment for most high-earning consultants is an employer pension contribution, deductible for corporation tax and free of National Insurance, but gated by the annual allowance, which may be tapered down to as low as £10,000. This guide walks through five options, with a worked comparison on £100,000 of surplus, the BADR trading-status trap, and the NHS pension position that applies identically across every route.

Why surplus cash builds up in a medical company

A consultant running private work through a limited company pays corporation tax on the company's profits at 19% on profits up to £50,000 (25% above £250,000, with marginal relief at the 3/200 standard fraction in the band between). That is cheaper than the 40% or 45% income tax the consultant would pay personally on the same profit. But extracting that profit as dividends adds a second layer: 35.75% upper-rate dividend tax or 39.35% additional-rate dividend tax in 2026/27. The combined effective rate on a pound of pre-tax company profit reaching an additional-rate consultant is around 50% once both layers stack up.

Retaining the profit in the company defers that second layer. Over several productive years in a busy private practice, the accumulated balance can grow substantially. At some point, doing nothing with it becomes its own problem, both in terms of investment return and in terms of the quiet threat to a future BADR claim.

The problem with leaving it as idle cash

Cash on deposit earns interest. That interest is company income and is subject to corporation tax at the company's marginal rate. A modest operational buffer is entirely normal and expected. The problem is proportionality.

For a future capital extraction to qualify for Business Asset Disposal Relief at 18% from 6 April 2026, the company must be a trading company throughout the two-year qualifying period to disposal (whether that is a share sale or a members' voluntary liquidation). HMRC's position on trading status looks at whether trading is the company's main activity. A company whose assets, income and management time are substantially taken up by investment rather than active trading can fail the test. There is no hard statutory boundary, and the assessment is made on all the facts, but a company that has converted from an active private practice into a vehicle sitting on a large investment portfolio is at real risk of losing the trading designation.

The 18% BADR rate from 6 April 2026 (down from 14% between 6 April 2025 and 5 April 2026) makes the stakes here meaningful. On £500,000 of qualifying gains the tax cost at 18% is £90,000; if BADR is lost and the normal CGT rate applies instead, the comparison is significantly worse. The time to review trading status is before the balance sheet drifts, not on the eve of a wind-up.

Option 1: employer pension contributions

For most high-earning consultants, employer pension contributions from the company are the sharpest tool available. The mechanics are clean: the company pays a contribution to the consultant's personal pension or self-invested personal pension (SIPP), and the contribution is deductible for corporation tax on a paid basis under Finance Act 2004 s.196 on the "wholly and exclusively" test. There is no employer National Insurance on pension contributions, and no income tax charge on the consultant as the contribution enters the pension. The money moves from taxable company profits into the pension in full, with no leakage at the point of contribution.

The gating factor is the annual allowance. For 2026/27 the standard annual allowance is £60,000. It tapers where threshold income exceeds £200,000 and adjusted income exceeds £260,000, reducing by £1 for every £2 of adjusted income above £260,000, down to a minimum of £10,000. Many high-earning consultants with significant private and NHS income find their tapered allowance is well below £60,000. The critical planning tool is carry-forward: unused annual allowance from the previous three tax years (going back to 2023/24 for a 2026/27 contribution) can be added to the current year's room, so a consultant who has not made large personal pension contributions in recent years may have several years of accumulated space. Calculating exactly how much is available requires checking the pension input amount for the NHS defined-benefit scheme alongside any existing personal pension contributions.

One framing point matters. An employer pension contribution does not substitute for NHS pension accrual. Company income and dividends are not NHS-pensionable; only the NHS employment is pensionable for a consultant. The employer contribution builds a separate DC pot alongside the NHS scheme rather than replacing it. For a consultant whose total pension input amount is already pressing against the taper, a personal SIPP contribution may deliver limited additional benefit, but for those with genuine carry-forward room it is usually the most efficient deployment of company surplus by a clear margin.

Option 2: extract as dividends over time

Dividend extraction remains the most straightforward route and, with planning, a reasonably efficient one. The 2026/27 dividend rates from 6 April 2026 are 10.75% at ordinary (basic) rate, 35.75% at upper (higher) rate and 39.35% at additional rate, with a £500 annual dividend allowance. A consultant who extracts dividends in a lower-income year, for example during a period of reduced sessions, a sabbatical, or in the run-up to retirement when other income has fallen, can draw against the basic-rate band at 10.75% rather than paying 39.35%.

A spouse or civil partner who holds shares in their own right in the company can draw dividends against their own basic-rate band, paying 10.75% on their share of the distribution. The settlements legislation in ITTOIA 2005 s.619 onwards (particularly s.624 on settlor-interested arrangements and s.629 on parental settlements for minor children) requires care: the shareholding must be a genuine arm's-length ownership with commercial purpose, and income from shares that effectively belong to the consultant rather than the spouse can be re-attributed. A properly structured spouse shareholding is legitimate and common; one set up purely to divert income without real transfer of beneficial ownership is not.

Dividends are not pensionable under the NHS scheme regardless of the rate at which they are taxed.

Option 3: invest inside the company and the BADR trading-status trap

Surplus cash can be invested in stocks, funds or bonds inside the company. UK company dividends received by the company are broadly exempt from corporation tax under the distributions exemption for most qualifying holdings, which makes equity investment inside a company reasonably tax-efficient on investment income. Capital gains inside the company are subject to corporation tax at the company's applicable rate rather than the individual CGT rate.

The serious risk is to BADR and business property relief for inheritance tax. Both reliefs require the company to be trading rather than an investment business. Business property relief, which can reduce or eliminate the inheritance tax charge on transfers of shares in a qualifying trading company, is unavailable for an investment company; BADR, as set out above, requires trading-company status throughout the two-year qualifying period.

The trading company test in practice

HMRC assesses trading status by looking at whether trading is the main activity, taking into account the nature and size of the trading versus non-trading activities, the proportion of assets held for investment, and the management time devoted to each. A private practice with a modest portfolio sitting alongside active fee-earning work is generally fine. A company that has wound down its clinical activity and is now primarily managing a large investment portfolio is not. Because the test is applied to the facts at the date of disposal and throughout the preceding two years, a company whose trading position deteriorated over that period may fail on BADR even if it was clearly trading several years before. If there is any doubt, the position should be reviewed at least two years before a planned disposal, because the clock cannot be wound back.

Option 4: a family investment company or a separate investment subsidiary

If the intention is to invest meaningfully for long-term wealth or to bring family members into a wealth structure, a separate entity such as a family investment company can hold the investments without contaminating the trading company's BADR and business property relief position. The medical trading company transfers surplus cash to the FIC (usually as a dividend, which is largely corporation-tax-exempt in the FIC's hands), and the FIC holds the investment portfolio. The trading company's balance sheet stays clean.

The tax treatment inside the FIC is the same as for any other close company: corporation tax on investment returns (with the UK dividend exemption), and dividend tax on extraction in 2026/27 at 10.75% to 39.35% depending on the individual's personal tax position. The advantage is structural separation, not a lower tax rate. For most consultants, a FIC only earns its setup and running overhead at meaningful scale, typically where there is a substantial surplus intended for family wealth planning across generations rather than the consultant's own retirement. We cover the FIC structure in full in our separate guide.

Option 5: wind the company up and take capital via an MVL

A members' voluntary liquidation (MVL) is a formal solvent winding-up. A licensed insolvency practitioner is appointed, the company's liabilities are settled, and the remaining assets are distributed to shareholders as a capital sum. Where BADR applies, the capital distribution is taxed at 18% from 6 April 2026, subject to the £1 million lifetime limit per individual, compared to 35.75% or 39.35% on a dividend extraction at higher or additional rate. On retained profits of £200,000 after corporation tax, for example, the difference between an MVL with BADR at 18% (£36,000 tax) and a dividend to an additional-rate consultant at 39.35% (£78,700 tax) is over £40,000 on that single decision.

For the MVL to produce a qualifying gain at the BADR rate, the BADR conditions must be met: the company must have been trading throughout the two years before the disposal, and the consultant must have held at least 5% of the ordinary share capital and voting rights, been entitled to at least 5% of the economic interest, and been an officer or employee throughout that period. The trading-status point reinforces why the balance sheet needs reviewing before the two-year window closes.

Two specific risks apply to the MVL route. The first is the trading-status risk already described: a company that has drifted into substantial investment activity will fail BADR. The second is the anti-phoenix Targeted Anti-Avoidance Rule in CTA 2010: where the consultant closes the company and promptly restarts the same or similar activity, whether personally or through a new entity, and it is reasonable to conclude that avoiding income tax was a main purpose of the winding-up, the capital treatment is denied and the distribution is treated as income. The TAAR is aimed at contrived arrangements, not genuine retirements, but it catches consultants who wind up a company on BADR terms and then resume private practice through a new vehicle shortly afterwards.

The NHS pension interaction across all five options

The same point applies to every route in this guide: company income, dividends, capital distributions and investment returns are all outside the NHS Pension Scheme entirely. Only the consultant's NHS employment is pensionable. An employer pension contribution to a personal pension does not restore NHS accrual; it builds a separate DC pot. The annual allowance is where the NHS and personal pension worlds collide, because the NHS pension input amount (the capitalised growth in defined-benefit accrual each year) counts against the same allowance as personal pension contributions. For a consultant with a high NHS pension input amount and threshold income above the taper thresholds, the available space for employer contributions may be much smaller than the headline £60,000 suggests. Modelling the full picture, including the NHS input amount and any carry-forward from prior years, is essential before committing to a contribution strategy.

Worked comparison: £100,000 of pre-tax company profit, four routes (2026/27)

The table below illustrates what happens to £100,000 of pre-tax company profit deployed four ways. It assumes the small-profits corporation tax rate of 19%, the consultant is an additional-rate taxpayer, and there is sufficient annual allowance carry-forward to absorb the pension contribution in full. Base cost and the £500 dividend allowance are excluded for clarity. These are illustrative figures; the right numbers for your situation depend on your actual profit, tax rates, allowance position and the structure of any family shareholding.

Route	Corporation tax on £100,000 profit	After-CT cash in company	Personal tax on extraction	Amount reaching consultant (or pension)	Key caveat
Employer pension contribution	Nil (fully deductible; profit wiped to zero)	£100,000 paid into pension directly	Nil (no income tax or NIC on contribution)	£100,000 in personal pension	Subject to annual allowance (£60,000 standard, tapered to £10,000 minimum); carry-forward may increase room [§2.B]
Dividend to additional-rate taxpayer	£19,000 (19% small-profits rate)	£81,000	£31,874 (39.35% additional dividend rate, 2026/27)	£49,126	Not pensionable; dividend allowance £500 (excluded here); from 6 April 2026 [§5]
Dividend to basic-rate spouse shareholder	£19,000	£81,000	£8,708 (10.75% ordinary dividend rate, 2026/27)	£72,292	Genuine arm's-length shareholding required; settlements legislation applies; not pensionable [§5]
Capital via MVL (BADR)	£19,000	£81,000	£14,580 (18% BADR rate from 6 April 2026, ignoring base cost)	£66,420	BADR conditions must be met throughout 2-year period; trading status must hold; anti-phoenix TAAR risk; £1m lifetime limit [§4]

The employer pension route outperforms every alternative in isolation, but the comparison is only meaningful where genuine annual-allowance headroom exists. Where the allowance is fully tapered and there is no carry-forward, the pension route is capped or unavailable, and the choice collapses to dividends (timing and rate) versus capital extraction via MVL, with the BADR conditions determining which is available.

Common mistakes consultants make with surplus company cash

• Not calculating carry-forward before paying dividends. Many consultants assume the annual allowance is fully used by the NHS pension input amount and pay dividends rather than employer contributions. In practice, depending on the year and their pension history, there may be significant carry-forward room that makes a pension contribution far more efficient.
• Letting the investment portfolio grow without reviewing BADR trading status. A portfolio that starts as a modest cash buffer can grow over several years of retained profits into a material non-trading asset. By the time the consultant wants to wind up, the two-year BADR qualifying window has run with the company in a mixed position, and the relief is at risk. Reviewing the balance sheet annually against the trading-status position is a simple habit that can preserve a significant tax advantage.
• Extracting dividends in high-income years when lower-income years are approaching. A consultant planning to reduce sessions or take partial retirement within a few years often has a lower-income window coming. Extracting at 39.35% now instead of 10.75% or 35.75% in that window is an unnecessary cost, and the company can hold the cash in the meantime.
• Proceeding with an MVL without checking the anti-phoenix TAAR conditions. The TAAR is a genuine risk for consultants who wind up a company and then resume private work. Taking advice on the conditions before the wind-up starts, rather than after, is the right sequence.
• Assuming the pension contribution is pensionable under the NHS scheme. It is not. The company contribution builds a personal DC pot, and while that pot will be valuable, it is entirely separate from the NHS defined-benefit accrual, which depends on pensionable pay from the NHS employment alone.

How we help consultants deploy surplus company cash

Surplus cash in a private-practice company is a real planning decision: the right route depends on the annual allowance position (including the NHS pension input amount), the balance sheet composition relative to BADR trading status, the planned exit timeline, and the family and income-tax picture. We work through the employer pension calculation, including carry-forward from prior years, alongside the trading-status review and the dividend-versus-capital comparison, so the options are presented with actual numbers rather than general principles.

If you run private work through a company and have retained profits that have been accumulating, the time to model this is before the BADR two-year clock runs in the wrong direction and before a pension contribution year is closed off. You can read more about how we work with consultants, explore our guides to GP and consultant pension contributions and tax relief and CGT and BADR on selling a private practice, and get in touch via our contact page to discuss your specific position.