How Do I Handle Capital Gains Within a Limited Company

At Towerstone Accountants we provide specialist limited company accountancy services for directors and owner managed businesses across the UK. We wrote this guide for people running a company who want clear answers on tax, payroll, Companies House filing duties, and day to day compliance without jargon. Our aim is to help you understand your responsibilities, reduce the risk of penalties, and know when to get professional support.

Capital gains inside a limited company are one of those areas that sound complex but follow a very logical structure once you understand the rules. I often find directors assume capital gains work in the same way as they do personally, or that gains somehow fall outside the company tax system. In reality, capital gains in a limited company are tightly integrated into Corporation Tax and the way you account for assets.

In this article I will explain how capital gains work within a limited company, what counts as a chargeable gain, how gains are calculated, how they are taxed, and how losses can be used. I will also cover common scenarios such as selling property, disposing of shares, and transferring assets, along with planning points and mistakes I see regularly. My aim is to give you a practical and clear understanding so you can make informed decisions and avoid costly surprises.

What capital gains mean for a limited company

A capital gain arises when your limited company sells or disposes of an asset for more than it cost. The asset might be something obvious like property or shares, or something more everyday such as equipment, vehicles, or intellectual property.

Within a limited company, capital gains are not taxed separately. Instead, they form part of the company’s taxable profits and are charged to Corporation Tax.

This is a key difference from personal capital gains tax. There is no separate capital gains tax rate for companies, and there is no annual tax free allowance.

In simple terms:

• The company calculates the gain on disposal

• That gain is added to the company’s taxable profits

• Corporation Tax is paid on the total

Understanding this integration is essential, because it affects planning, timing, and how transactions are structured.

What counts as a disposal for capital gains purposes

A disposal does not just mean selling something for cash. For capital gains purposes, a disposal can occur in several ways.

Common examples include:

• Selling an asset for money

• Gifting an asset

• Transferring an asset to a director or connected party

• Scrapping or destroying an asset

• Receiving insurance compensation for a damaged or lost asset

Even where no money changes hands, a disposal can still trigger a chargeable gain based on market value. This often catches directors out when assets are moved around informally.

Assets that can give rise to capital gains

Most capital assets owned by a limited company can fall within the capital gains rules.

Typical examples include:

• Land and buildings

• Commercial property

• Investment property

• Shares in other companies

• Business goodwill

• Trademarks and intellectual property

• Plant and machinery where capital allowances do not fully cover the cost

Some assets are dealt with mainly through capital allowances rather than capital gains, but gains can still arise if disposal proceeds exceed the tax written down value.

How capital gains are calculated in a limited company

The basic capital gain calculation is straightforward in principle, although the detail can become complex.

The starting point is:

• Disposal proceeds

• Less allowable costs

The result is the chargeable gain.

Disposal proceeds

Disposal proceeds are usually the amount the company receives for the asset. Where the disposal is not at arm’s length, such as a gift or transfer to a director, HMRC will usually substitute market value.

Allowable costs

Allowable costs typically include:

• The original purchase price

• Legal and professional fees on acquisition

• Legal and professional fees on disposal

• Costs of improving the asset

Routine repairs and maintenance are not allowable capital costs, as they are usually deducted as revenue expenses instead.

Indexation allowance and why it no longer applies

Historically, companies could reduce capital gains using indexation allowance, which adjusted the cost for inflation. This is no longer available for disposals after December 2017.

This means:

• Gains are calculated without inflation adjustment

• The taxable gain may be higher than expected

• Timing and planning have become more important

Many directors are unaware of this change and still assume some form of inflation relief applies. It does not.

How capital gains are taxed in a limited company

Once the gain is calculated, it is included in the company’s taxable profits and charged to Corporation Tax.

There is no separate capital gains tax rate for companies.

The applicable Corporation Tax rate depends on the company’s profit level and accounting period. This means capital gains can push a company into a higher effective tax band.

Key points to remember:

• Capital gains increase taxable profits

• Corporation Tax is paid at the applicable rate

• There is no annual exempt amount

This is very different from personal capital gains tax and often makes incorporation less attractive for holding certain types of investments.

Capital losses and how they can be used

Just as gains can arise, a limited company can also make capital losses.

A capital loss occurs when an asset is disposed of for less than its allowable cost.

Capital losses cannot be set against trading profits. Instead, they can be used only against capital gains.

Capital losses can:

• Be offset against capital gains in the same accounting period

• Be carried forward indefinitely

• Be used against future capital gains

This makes tracking capital losses important, particularly for companies holding investments or property.

Capital gains on property within a limited company

Property is one of the most common sources of capital gains in limited companies.

Commercial property

When a company sells commercial property, the gain is calculated in the normal way, taking into account purchase cost, legal fees, and improvement costs.

If capital allowances have been claimed on fixtures, there may also be balancing charges or adjustments to consider alongside the capital gain.

Residential property

Limited companies can own residential property, often as part of a buy to let or development structure.

Capital gains on residential property within a company are:

• Subject to Corporation Tax

• Not eligible for personal CGT allowances

• Often higher than personal tax would have been

This is why company ownership is usually chosen for long term planning rather than short term disposals.

Selling shares held by a limited company

Limited companies sometimes hold shares in other companies, either as investments or as part of a group structure.

When shares are sold, a capital gain or loss may arise.

In some cases, substantial shareholdings exemption may apply, meaning the gain is exempt from Corporation Tax. This depends on factors such as:

• The percentage shareholding

• The length of ownership

• The trading status of both companies

This is a highly technical area and professional advice is essential before relying on any exemption.

Transferring assets to directors or shareholders

One of the most common mistakes I see is transferring company assets to a director without understanding the tax consequences.

If a company transfers an asset to a director:

• The company is treated as disposing of it at market value

• A capital gain may arise

• There may also be income tax implications for the director

This can result in a double tax charge if handled incorrectly.

The accounting and tax treatment must be carefully planned, particularly where assets are being extracted as part of a company wind up or restructuring.

Capital gains and company closures

When a company is wound up, its assets are typically sold or distributed.

This can trigger capital gains within the company before any funds are distributed to shareholders.

The sequence usually looks like this:

• Company sells or disposes of assets

• Capital gains are calculated

• Corporation Tax is paid

• Remaining funds are distributed to shareholders

Understanding this order is critical when estimating how much cash will ultimately be available.

How capital gains are reported to HMRC

Capital gains within a limited company are reported as part of the Corporation Tax return.

They are included in:

• The company tax computation

• The CT600 return

Supporting schedules should clearly show:

• Disposal proceeds

• Allowable costs

• Gains or losses

• Any carried forward losses used

Accurate record keeping is essential, as HMRC may request evidence years after the event.

Record keeping and evidence

For capital gains purposes, I always advise companies to retain:

• Purchase contracts and completion statements

• Legal invoices

• Valuations

• Improvement invoices

• Sale contracts and statements

These records should be kept for at least six years after the end of the accounting period, and often longer where assets are held for many years.

Common capital gains mistakes in limited companies

Over the years I have seen the same issues come up repeatedly.

Assuming capital gains are taxed separately

Many directors assume there is a separate capital gains tax calculation, which leads to incorrect tax forecasts.

Ignoring market value rules

Transfers between connected parties are often done informally, triggering unexpected gains.

Forgetting capital losses

Companies often fail to track and use carried forward capital losses, leading to unnecessary tax payments.

Poor timing of disposals

Disposing of assets in a high profit year can increase the effective Corporation Tax rate on gains.

Planning considerations for capital gains

Good planning can significantly affect the tax outcome.

Key considerations include:

• Timing disposals to coincide with lower profit periods

• Using capital losses efficiently

• Understanding exemptions before selling shares

• Considering whether assets should be held personally or within a company

These decisions are rarely one size fits all and should be reviewed in the context of the wider business strategy.

How I advise clients on capital gains

When advising clients, I always look beyond the immediate transaction.

I ask questions such as:

• Why is the asset being sold

• What is the long term plan for the business

• Are there alternative structures

• What other tax consequences arise

Capital gains do not exist in isolation. They interact with Corporation Tax, income tax, dividends, and sometimes inheritance tax planning.

Final thoughts

Handling capital gains within a limited company is about understanding the mechanics and respecting the detail. While the principles are straightforward, the consequences of getting it wrong can be expensive.

In my experience, the best outcomes come from early planning, clear records, and professional advice before assets are sold or transferred. Capital gains are not something to fear, but they are something to approach with care and intention.

If your company is holding or disposing of valuable assets, take the time to understand the implications properly. It will almost always save time, money, and stress in the long run.

You may also find our guidance on Can my company buy property or invest in shares and What are allowable and disallowable expenses for limited companies helpful when exploring related limited company questions. For a broader overview of running and managing a company, you can visit our limited company hub.