Capital gains tax is a subject that many business owners in London only think about at the moment they are selling an asset, a property, or the business itself, by which point some of the most valuable planning opportunities have often already passed. Understanding the basics of how capital gains tax works, well before a disposal is imminent, allows business owners to plan ahead, structure transactions sensibly, and in many cases significantly reduce the tax that ultimately becomes payable. As a small business accountant working with London based clients, we often find that early conversations about capital gains tax, held months or even years before an actual sale, produce far better outcomes than reactive advice sought after the event.
At its most basic level, capital gains tax applies to the profit made when you dispose of an asset that has increased in value, rather than to the total amount received from the sale. If you bought a commercial property for a certain price and later sold it for considerably more, the tax is calculated on the gain, the difference between what you paid and what you received, after allowable costs such as improvement expenditure and disposal costs have been deducted. This distinction matters because business owners sometimes assume, incorrectly, that the entire sale proceeds are subject to tax, which can lead to unnecessary anxiety or poor decision making around the timing of a sale.
For business owners, some of the most common triggers for capital gains tax include selling shares in a company, disposing of business premises or other commercial property, selling significant business assets such as equipment or intellectual property, and, most significantly for many, selling the business itself either in part or in full. Each of these scenarios carries its own specific rules and potential reliefs, which is why a generic understanding of capital gains tax is rarely enough when a genuine disposal is on the horizon, and specific, tailored advice becomes essential.
Business Asset Disposal Relief, previously known as Entrepreneurs' Relief, is one of the most significant reliefs available to business owners selling all or part of a qualifying business. Where the relevant conditions are met, this relief allows gains to be taxed at a reduced rate compared to the standard rates that would otherwise apply, up to a lifetime limit. The qualifying conditions are specific and relate to matters such as the length of time the business has been owned, the percentage shareholding held, and whether the individual has been actively involved in the business as an officer or employee for a minimum period before the sale. Because these conditions must generally be met for a period of time before the disposal, waiting until a sale is already agreed before checking eligibility can sometimes mean it is too late to restructure the situation to qualify.
The annual exempt amount is another important element of capital gains tax planning. Each individual has a tax free allowance for capital gains each year, below which no tax is payable at all. This allowance has been reduced considerably in recent years, making it more important than ever to plan the timing of disposals carefully, particularly where a business owner might have some flexibility over which tax year a sale completes in. Spreading disposals across more than one tax year, where commercially sensible to do so, can sometimes allow more than one annual exempt amount to be utilised, reducing the overall tax burden compared to realising the entire gain within a single tax year.
For business owners who are married or in a civil partnership, transfers of assets between spouses generally take place without triggering an immediate capital gains tax charge, which opens up planning opportunities where one partner has unused annual exempt amount or is taxed at a lower marginal rate than the other. Careful use of this rule, applied well before a disposal takes place, can sometimes reduce the overall tax paid by the couple on a jointly beneficial transaction, though it needs to be planned with proper professional guidance to ensure the transfer itself is structured correctly and for genuine reasons.
Reinvestment reliefs also exist for certain situations, allowing a gain on the disposal of a qualifying business asset to be deferred where the proceeds are reinvested into another qualifying business asset within a set timeframe. This can be particularly relevant for business owners who are restructuring their operations, moving premises, or reinvesting proceeds from the sale of one part of their business into growing another part, rather than extracting the funds for personal use.
Record keeping plays a crucial role in capital gains tax calculations, particularly for assets that have been held for a long period or that have had significant costs incurred on them over time, such as capital improvements to a commercial property. Without clear records of the original acquisition cost and any allowable enhancement expenditure, it becomes considerably harder to calculate the true gain accurately, and business owners risk either overpaying tax through an inability to evidence legitimate deductions, or facing HMRC challenge for underclaiming without proper support.
At Fred Michael & Co, we help London business owners plan for capital gains tax well ahead of any anticipated disposal, reviewing eligibility for available reliefs, considering the timing of transactions, and ensuring that every allowable deduction is properly evidenced and claimed. Because so much of effective capital gains tax planning depends on decisions made before a sale takes place rather than after, we always encourage business owners to start these conversations early, ideally as soon as a future sale or significant disposal first becomes a realistic possibility.
Incorporation relief and holdover relief are two further mechanisms worth understanding for business owners who are restructuring rather than fully exiting their business. Incorporation relief can defer a gain arising when an unincorporated business, such as a sole trade or partnership, is transferred into a limited company in exchange for shares, while holdover relief allows certain gains on gifted business assets to be deferred until the recipient eventually disposes of the asset themselves. Both reliefs involve specific conditions and require formal elections to be made, and business owners considering any kind of restructuring, whether for succession planning, investment purposes, or simple commercial reorganisation, should always check whether one of these deferral mechanisms could apply before assuming a transfer will automatically trigger an immediate tax charge.
Finally, it is worth considering how capital gains tax interacts with succession and inheritance planning for London business owners who intend to pass their business on to family members or key employees eventually rather than selling to a third party. The tax treatment of a lifetime transfer differs considerably from a sale on the open market, and it can also interact with inheritance tax considerations in ways that are easy to overlook if the two areas are considered separately rather than as part of a single, coordinated long term plan. Business owners thinking about eventual succession, even many years in advance, benefit considerably from bringing capital gains tax planning into that broader conversation from the outset, rather than treating it as an afterthought once a transfer is already being arranged.
It is also worth remembering that the rate of capital gains tax payable can depend on an individual's overall level of income for the year in which the gain arises, since basic rate and higher rate taxpayers are subject to different rates on their gains. This means the tax due on exactly the same gain can vary considerably depending on what else is happening in a business owner's finances that year, and in some cases it may be possible to influence which tax year a gain falls into, or to manage other income around the disposal, in a way that keeps more of the gain within a lower rate band rather than pushing it into a higher one.
Need Help With Tax?
Let's get your tax right, and keep it that way
Fred Michael & Co Ltd provides tax services for London businesses, freelancers and landlords, from self-assessment to VAT and corporate tax.