Advanced Taxation (UK) · Taxation effects of the financial decisions made by businesses and individuals

Tax Implications of Acquiring and Disposing of Assets for ACCA ATX

Updated 11 October 2026 · Fact-checked

Buying an asset usually earns capital allowances, while leasing usually gives a deduction for the rentals. Selling an asset can create a chargeable gain, which reliefs such as rollover relief, gift holdover relief, business asset disposal relief or substantial shareholding exemption may reduce, defer or remove. Compare the after-tax cost of each option.

Understand Tax Implications of Acquiring and Disposing of Assets

Every asset decision has two tax sides: the cost of getting the asset and the result of getting rid of it. You must look at both, and at the cash flow timing.

Acquiring. If a business buys plant and machinery, it cannot deduct the cost as an expense. Instead it claims capital allowances. The annual investment allowance (AIA) gives 100% relief on up to £1,000,000 of qualifying expenditure. Companies can also claim 100% first year allowance on main pool expenditure and 50% on special rate pool expenditure. Anything not covered goes into a pool and gets writing down allowances: 18% for the main pool and 6% for the special rate pool. Structures and buildings allowance gives 3% a year on a straight line basis.

Leasing. If the business leases instead, the rentals are normally deducted as a trading expense over the lease. You get no capital allowances, and nothing to sell at the end. The comparison is therefore buy (allowances, plus any sale proceeds later) against lease (rental deductions). Always compare after-tax cash flows, not just the headline tax saving. Remember the effect on VAT and financing too.

Disposing. A disposal of a chargeable asset gives a gain or loss. Individuals pay CGT after deducting the £3,000 annual exempt amount. The part of the gain that falls within any unused basic rate band is taxed at 18%, and the excess is taxed at 24%. Companies include gains in profits chargeable to corporation tax. When you sell plant on which allowances were claimed, the lower of the sale proceeds and original cost goes through the capital allowances pool. Any excess of proceeds over cost may be a chargeable gain, unless the asset is an exempt chattel or wasting asset. Most plant is a wasting chattel, so the excess is often exempt from CGT.

Reliefs. Reliefs change the result. Business asset disposal relief (BADR) taxes qualifying gains at 14% up to a £1,000,000 lifetime limit. Rollover relief defers a gain when proceeds from qualifying business assets are reinvested in other qualifying assets. Gift holdover relief defers the gain when a business asset is given away. Substantial shareholding exemption (SSE) exempts a company's gain on selling a substantial shareholding in a trading company. Your job in the exam is to spot which relief applies, test the conditions, and compute the tax with and without it.

Key rules to remember

Annual investment allowance: AIA = 100% of qualifying expenditure, up to £1,000,000 a year; Use it first against special rate pool expenditure, because those assets only get 6% writing down allowance otherwise (or a 50% first year allowance for companies). Cars do not qualify for AIA, although a new zero-emission car can get a 100% first year allowance.
Writing down allowance: WDA = tax written down value × 18% (main pool) or × 6% (special rate pool); Reduce or increase for short or long periods of account. Do not forget the 18% and 6% are from the tax tables.
Company first year allowances: Main pool: 100% FYA. Special rate pool: 50% FYA.; Available to companies only, and claimed in addition to the AIA. Special rate expenditure not covered by AIA gets 50% FYA, and the balance goes into the pool for the 6% writing down allowance.
Structures and buildings allowance: SBA = 3% × qualifying cost, straight line; Applies only to non-residential structures and buildings. It relates to construction cost, not land. It is not a pool, so there are no balancing adjustments. On a sale, the buyer continues to claim the allowance. In the seller's chargeable gains computation, the SBA claimed is added to the sale proceeds, which has the same effect as deducting it from cost.
CGT on individuals: Tax = (gain − losses − £3,000 annual exempt amount) × 18% or 24%; The part of the gain that falls within the unused basic rate band is taxed at 18%. The excess over that band is taxed at 24%. BADR gains are at 14%.
BADR: Qualifying gain × 14%, lifetime limit £1,000,000; Conditions for a company's shares: personal trading company, at least 5% of ordinary share capital and voting rights, officer or employee, for the required period before disposal. For a sole trader, disposal of all or part of a business. Check the ownership period carefully.
Rollover relief (full reinvestment): Gain deferred = gain; new asset base cost = cost of new asset − gain deferred; Both old and new assets must be qualifying business assets used in the trade. The new asset must be bought in the period from one year before to three years after the disposal.
Rollover relief (partial reinvestment): Gain taxed now = lower of gain and proceeds not reinvested; The rest of the gain is deferred and deducted from the new asset's cost.
Substantial shareholding exemption: Gain on shares exempt if the investing company held at least 10% of the ordinary shares for a continuous 12 months in the previous 6 years, and the investee is a trading company or the holding company of a trading group or subgroup, both throughout the 12-month period and immediately after the disposal; The investing company does not need to be a trading company or a member of a trading group. If the exemption applies, losses are not allowable either.

How to solve Tax Implications of Acquiring and Disposing of Assets questions

Use the same sequence for any asset acquisition or disposal requirement. It keeps your answer structured and picks up the professional skills marks.

1Identify the taxpayer (individual, sole trader, partnership or company) and the asset (plant, building, shares, goodwill). This decides which tax rates and reliefs apply.
2For an acquisition, list qualifying expenditure and split it between main pool, special rate pool and non-qualifying items such as land and cars (cars are not AIA eligible, though a new zero-emission car can get a 100% first year allowance).
3Compute capital allowances: allocate the AIA first, against special rate pool expenditure first, then main pool expenditure. For a company, then claim 100% FYA on main pool expenditure and 50% FYA on any remaining special rate expenditure. Then claim writing down allowances on the balance. Adjust for the length of the period.
4If leasing is an option, compute the rental deduction and compare after-tax cash flows with buying, including any sale proceeds, VAT and financing effects.
5For a disposal, compute the gain or loss: proceeds (or market value for a gift) less cost less enhancement expenditure and disposal costs.
6Test each relief's conditions one by one: BADR, rollover, gift holdover, SSE. State clearly if a condition fails and why.
7Compute tax with and without the relief, deducting the annual exempt amount (individuals), and state the saving or the deferral and its effect on the new base cost.
8Finish with advice: timing of reinvestment, the CGT payment date, and any risk to the relief, such as the replacement asset being sold early.

Quickest way: Relief checklist first, numbers second

When to use it: Use when time is short and the question gives several asset events with a mix of reliefs.

Write a line for each asset: buy, lease, sell or gift, with who owns it.
Next to each, tick the one relief that is probably intended: AIA/FYA for plant, BADR for a business or personal company disposal, rollover for reinvestment, SSE for a company selling shares.
Check only the key condition for each (for example 10% for 12 months for SSE, one year before to three years after for rollover).
Do the gain and allowance numbers using the tax tables rates you have been given.
Write one sentence of advice per asset: what to claim, and what could lose the relief.

Common mistakes in Tax Implications of Acquiring and Disposing of Assets

Claiming AIA on a car or on more than £1,000,000 of expenditure.
Students remember that AIA is 100% and forget its exclusions and limit.
Fix: Cars do not qualify for AIA. A new zero-emission car gets a 100% first year allowance instead. Cap the AIA at £1,000,000 and send the rest to the pool for writing down allowance.
Allocating AIA to the main pool before the special rate pool.
Students follow the order the assets are listed in the question.
Fix: Use AIA against special rate pool expenditure first. Leftover special rate expenditure only gets 6% (or a 50% FYA for a company), whereas a company's main pool expenditure can get a 100% FYA anyway. Then claim the company FYAs and writing down allowances on the balance.
Deferring the whole gain under rollover relief when not all the proceeds are reinvested.
Students focus on the cost of the new asset and forget the proceeds test.
Fix: Compare the full proceeds with the amount reinvested. The shortfall, up to the amount of the gain, is taxed now.
Forgetting to reduce the base cost of the replacement asset by the deferred gain.
Students treat rollover as an exemption rather than a deferral.
Fix: Always show the new base cost: cost of new asset less gain rolled over. Say the gain comes back on a later disposal.
Applying SSE without checking the investee is a trading company and the 12 month holding test.
Students see a 'large shareholding' and stop at the 10% test.
Fix: Test the 10% holding, the 12 months in the prior 6 years, and the trading status of the investee throughout the 12 months and immediately after the disposal. The trading status of the investing company does not matter.
Claiming BADR for a shareholder who holds less than 5% or who is not an officer or employee.
Students recall the 14% rate but not the personal company conditions.
Fix: Write the BADR conditions out in your answer and tick each against the scenario facts, including the lifetime £1,000,000 limit already used.

Worked examples

Example 1

Delta, a sole trader, makes up accounts for the year ended 31 March 2026. The main pool and special rate pool have no balances brought forward. In the year Delta buys machinery for £1,200,000 (main pool) and an electrical installation qualifying as special rate pool plant for £300,000. Compute the capital allowances for the year. Assume the AIA is allocated in the most beneficial way.

Show the solution

Total qualifying expenditure is £1,200,000 + £300,000 = £1,500,000. The AIA limit is £1,000,000.
Allocate AIA to the special rate pool expenditure first: £300,000 at 100% = £300,000.
The remaining AIA is £1,000,000 − £300,000 = £700,000. Allocate it to main pool expenditure: £700,000 at 100%.
Main pool expenditure left is £1,200,000 − £700,000 = £500,000. This goes into the main pool.
Writing down allowance at 18%: £500,000 × 18% = £90,000.
Total allowances: £300,000 + £700,000 + £90,000 = £1,090,000.
The main pool carried forward is £500,000 − £90,000 = £410,000.

Answer: Total capital allowances for the year are £1,090,000: AIA £1,000,000 plus writing down allowance of £90,000. Main pool tax written down value carried forward is £410,000.

Example 2

Echo Ltd sells a factory used in its trade for £900,000 in the year. It cost £500,000, so the gain is £400,000. Within six months Echo Ltd buys a new factory for £850,000, which is a qualifying asset used in its trade. Explain the effect of rollover relief, giving the gain taxed now and the base cost of the new factory.

Show the solution

Check the conditions: both assets are qualifying business assets used in the trade, and the new asset was bought within the one year before to three years after window.
Proceeds are £900,000. The amount reinvested is £850,000.
Proceeds not reinvested are £900,000 − £850,000 = £50,000.
The gain taxed now is the lower of the gain (£400,000) and the proceeds not reinvested (£50,000) = £50,000.
The gain deferred is £400,000 − £50,000 = £350,000.
The base cost of the new factory is £850,000 − £350,000 = £500,000.
Advise that the deferred £350,000 becomes chargeable when the new factory is sold, unless rolled over again. Also advise that the claim must be made within four years from the end of the accounting period of the disposal or of the acquisition of the new asset, whichever is later.

Answer: £50,000 of the gain is chargeable now. £350,000 is deferred. The new factory has a base cost of £500,000.

Exam tips

Always show the allocation of AIA between pools. Marks are given for the choice, not just the total.
Write the conditions of each relief as a short list and match them to the scenario facts. A failed condition is often the point of the question.
When the question asks you to compare buying with leasing, give a conclusion and mention VAT, cash flow and financing, as well as the tax numbers. This supports professional skills marks.
Use the rates in the tax tables you are given: 18% and 24% CGT, 14% for BADR, 18% and 6% for writing down allowances. Do not rely on memory.
Show the effect on the base cost for any deferral relief (rollover or gift holdover). Examiners often check whether you know a deferral comes back later.

Practice questions from Taxation effects of the financial decisions made by businesses and individuals

Tax Implications of Acquiring and Disposing of Assets: frequently asked questions

What are the conditions for business asset disposal relief in ATX?

For shares, the company must be your personal trading company: you must hold at least 5% of the ordinary share capital and voting rights, and be an officer or employee, for the required period before the disposal. A sole trader can claim on the disposal of all or part of a trading business. The gain is taxed at 14% up to a £1,000,000 lifetime limit.

How does rollover relief work on replacement of business assets?

If you sell a qualifying business asset and reinvest the proceeds in another qualifying asset used in your trade, the gain is deferred rather than taxed. The replacement must normally be bought from one year before to three years after the disposal. The deferred gain is deducted from the base cost of the new asset. If not all the proceeds are reinvested, the shortfall is taxed now, up to the amount of the gain.

What is the difference between AIA and full expensing?

The AIA gives 100% relief on up to £1,000,000 of qualifying expenditure a year and is available to individuals and companies. Full expensing is the 100% first year allowance for companies on main pool expenditure, with a 50% first year allowance for the special rate pool. A company with more than £1,000,000 of spend can therefore still get 100% relief on the main pool excess.

When does substantial shareholding exemption apply?

SSE applies when a company sells shares in another company, having held at least 10% of the ordinary shares for 12 months in the previous six years. The company being sold must be a trading company, or the holding company of a trading group or subgroup, throughout that 12-month period and immediately after the disposal. The selling company does not have to be a trading company. If SSE applies, the gain is exempt and a loss is not allowable.