When an employer makes an asset available for an employee's private use — whether a laptop, television, camera, or other equipment — a benefit in kind arises. The annual charge is 20% of the market value when the asset was first made available. This percentage stays fixed each year (the original market value is always used, not the depreciated value).
The rules are in Part 3 Chapter 10 of ITEPA 2003. Where there is also business use, only the private proportion is chargeable. Where the employee pays for private use, that reduces the benefit. If the asset is gifted, a separate "gift charge" calculation applies to avoid double-counting.
Key Rules for Asset Use BIK 2025/26
- Annual benefit: 20% of market value when first made available
- Fixed base: original market value used every year (not depreciated value)
- Mixed use: only private use % is chargeable
- Bicycles: exempt if used mainly for commuting via qualifying Cycle to Work scheme
- Computers: fully taxable since April 2006 (20% rule applies)
- Gift charge: higher of market value at gift date or residual 20% charge less prior BIK
- Employer Class 1A NIC: 13.8% on net benefit
Asset Use BIK Calculator
Enter the asset details. For assets used both for business and private purposes, enter the estimated private use percentage. The calculator also shows the gift charge if you need it.
Gift charge = higher of current market value or (20% × original value × years used − BIK already charged). The BIK already charged equals years × annual net chargeable benefit. Cycles used mainly for commuting via a qualifying scheme are exempt.
The 20% Rule Explained
Section 205 ITEPA 2003 sets the annual charge for an asset made available for private use. The charge is 20% of the market value of the asset when it was first made available. This percentage does not change, and crucially, the base market value does not depreciate for BIK purposes.
This means an asset worth £5,000 when first provided produces a £1,000 annual benefit charge every year it is made available — even if the asset is worth £500 by year five. The fixed 20% rate on original value means older, depreciated assets continue to generate the same annual benefit charge.
The logic is administrative simplicity. A single calculation using the original market value avoids the complexity of obtaining annual valuations. For assets that appreciate rather than depreciate (unusual but possible), this also benefits employees over time.
Business and Private Use
Where an asset is provided for both business and private use, only the private element is chargeable as a benefit in kind. The employer and employee should agree a fair apportionment based on actual or expected use patterns. The method used should be consistent and supportable if HMRC enquires.
For IT equipment, many employers assume a standard split (for example, 70% business, 30% private for a laptop used at home). HMRC does not mandate a specific method but expects the allocation to be reasonable and documented. If the employer can demonstrate predominantly business use, the annual BIK charge can be substantially reduced.
| Scenario | Private use % | Annual benefit on £3,000 asset |
|---|---|---|
| Entirely private use | 100% | £600 (£3,000 × 20%) |
| Mixed 50/50 use | 50% | £300 (£3,000 × 20% × 50%) |
| Predominantly business (80%) | 20% | £120 (£3,000 × 20% × 20%) |
| Business only (no private use) | 0% | £0 (no private use) |
Asset Gift Rules
When an employer gives (gifts) an asset to an employee that was previously made available, a gift charge arises under section 206 ITEPA 2003. The gift charge prevents double-counting but also prevents tax avoidance through the prior-use route.
The gift charge is the higher of:
- The current market value of the asset at the date of the gift
- 20% of the original market value × number of years the asset was available, less the total BIK already charged in those years
Example: Asset originally worth £4,000, made available for 2 years, then gifted. Market value at gift date = £1,500. Prior BIK charged = 2 × (£4,000 × 20%) = £1,600. Residual charge = (£4,000 × 20% × 2) − £1,600 = £0. Gift charge = higher of £1,500 or £0 = £1,500. The current market value prevails in this case.
Special Rules: Bicycles and Cycle to Work
Bicycles provided through a qualifying Cycle to Work scheme and used mainly for qualifying journeys (commuting and business travel) are exempt from the asset use benefit in kind charge under section 244 ITEPA 2003.
To qualify, the cycle must be made available to all employees (not just selected individuals), the main use must be for qualifying journeys (commuting to and from a permanent workplace or for business travel), and the employer must not provide the cycle via a cash alternative. If any of these conditions fail, the standard 20% rule applies.
If a bicycle is provided for purely leisure or private use outside a qualifying scheme, the standard 20% rule applies in full.
Frequently Asked Questions
What is the 20% rule for assets made available?
Where an employer makes an asset available for private use, the annual taxable benefit is 20% of the market value of the asset when it was first made available. This 20% charge continues each year while the asset remains available, using the original market value — not the depreciated value.
Can the private use percentage reduce the benefit?
Yes. If the asset is used for both business and private purposes, only the private use proportion is chargeable. For example, if an asset has 60% business use and 40% private use, the benefit is 20% of market value × 40%. The employer must be able to demonstrate the business/private split.
Are computers and IT equipment still taxable as assets made available?
Yes. There was a previous exemption for employer-provided computers, but this was abolished from April 2006. Since then, computers and IT equipment made available for private use are subject to the standard 20% rule.
What happens when an employer gifts an asset to an employee?
When an asset is gifted to an employee, the taxable benefit is the higher of: (a) the market value of the asset at the date of the gift, or (b) 20% of the original market value multiplied by years since first made available, less amounts already charged as BIK in those years.
Is there an exemption for employer-provided bicycles?
Bicycles provided through a qualifying Cycle to Work scheme that are used mainly for qualifying journeys (commuting and business travel) are exempt from benefit in kind. However, bicycles provided for purely private use are taxable under the standard 20% asset rule.
Does the employee need to actually use the asset privately for there to be a BIK?
The charge arises when the asset is made available for private use — not only when it is actually used privately. If the employee has the asset at home or it is not restricted to business use only, HMRC treats it as available for private use.
What is the market value used for the 20% calculation?
The 20% is calculated on the market value when the asset was first made available to the employee. This value remains fixed for each subsequent year of availability — it does not reduce as the asset depreciates.
Are there employer NIC implications for asset use benefits?
Yes. The employer pays Class 1A NIC at 13.8% on the annual benefit. This is reported on form P11D(b) after the tax year. There is no employee Class 1 NIC on benefits in kind.
What is the gift charge rule when an employer gives an asset to an employee?
The gift charge is the higher of the current market value or the residual benefit (20% of original value × years used, less BIK already charged). This prevents employers from reducing the gift charge by making assets available before gifting.
Does the 20% rule apply to all types of asset?
The 20% rule applies to most assets (computers, equipment, furniture, televisions, art). Cars have separate rules under Part 3 Chapter 6 ITEPA 2003. Vans have their own benefit charges. The 20% rule is a catch-all for assets not covered by specific rules.
What if the employer rents the asset rather than owns it?
If the employer rents an asset and makes it available to an employee, the benefit is the higher of: 20% of the asset's market value when first made available, or the annual rental cost paid by the employer. This prevents an employer from avoiding the 20% rule by renting rather than buying.
How should employers calculate and report asset use benefits?
Employers should identify all assets made available for private use, record the market value at first provision, calculate 20% of that value (adjusted for private use %), deduct any employee payments, and report on form P11D. Class 1A NIC is reported on P11D(b) and paid by 19 July.