The Annual Investment Allowance (AIA) is a powerful tax relief that lets UK businesses deduct the full value of qualifying assets from their profits — up to a limit of £1 million per year. Whether you're purchasing equipment, machinery, or vehicles, AIA can significantly reduce your tax bill and support your business growth.
Let Funding Options by Tide help you take advantage of this benefit and explore smart funding routes to scale your operations.
They’re designed to incentivise businesses to reinvest by reducing their tax bill when purchasing long-term assets.
Depending on the type of allowance, claims can be made gradually (e.g. Writing Down Allowance) or immediately (e.g. Annual Investment Allowance).
Capital allowances let businesses deduct the cost of certain capital assets (like equipment, machinery, or vehicles) from their taxable profits.
The Annual Investment Allowance is a capital allowance scheme introduced by HMRC to incentivise business investment. Under current rules (as of 2025), businesses can claim up to £1,000,000 of qualifying expenditure on plant and machinery in the tax year.
AIA is available to:
Limited companies
Sole traders
Partnerships (excluding those with corporate members)
If your business invests in capital equipment or assets, you're likely eligible to benefit.
You can claim AIA on most items of plant and machinery, including:
Office equipment (desks, computers, printers)
Company vehicles (excluding cars)
Tools and machines for manufacturing or construction
Agricultural equipment
Integral features in buildings (e.g. heating systems)
⚠️ You can’t claim AIA on land, buildings, or cars.
Claiming AIA means you can deduct 100% of the qualifying cost from your taxable profits, reducing your Corporation Tax liability significantly.
Example: If you buy a piece of machinery for £100,000, and you're a limited company, you could reduce your taxable profits by the same amount — potentially saving £25,000 in tax (assuming 25% Corporation Tax).
We’ll ask a few questions about your business and the reason for your loan.
Our smart technology will compare quotes from up to 120+ lenders to help you find the ideal business loan.
We'll be there to guide you through every step of the process.
Office equipment comprising furniture, computers, computer hardware and software
Some building fixtures such as fitted kitchens, bathroom fittings and air conditioning
Integral features like heating, electrical systems, water systems, lifts, escalators and lighting systems
CCTV systems and fire alarms
Vans/ lorries, tractors and other agricultural machinery
If you're ready to take your business to the next level, use our business loans calculator to get an idea of what you can afford.
Want to understand the cost of your loan?
Use our business loan calculator below to find out how much you can borrow to take your business to the next level.
Calculations are indicative only and intended as a guide only. The figures calculated are not a statement of the actual repayments that will be charged on any actual loan and do not constitute a loan offer.
Monthly payments
-
Monthly interest
-
Total interest
-
Length of loan
-
Total cost of loan
-
Representative example*
• 7.63% APR Representative based on a loan of £50,000 repayable over 24 months.
• Monthly repayment of £2,252.94. The total amount payable is £54,070.56
*Some lenders may apply fees during the application process, please note that these are set and provided by these entities.
Annual Percentage Rates
Rates from 2.75% APR
Repayment period
1 month to 30 years terms
As of 2025, the limit is £1,000,000 per year. This may change depending on government policy, so always check with HMRC or your accountant.
Yes. You can claim AIA on financed equipment if you’re the legal owner and the asset qualifies.
Any expenditure above the AIA limit may be claimed using Writing Down Allowances (WDA), but at a lower rate.
Fortunately, hire purchase agreements are allowed under the super-deduction rules, and this presents an opportunity for businesses to use hire purchases to access the scheme. As part of the budget announced on 3 March 2021, the government introduced new temporary first-year allowances, including a 130% super-deduction, which will take effect from 1 April 2021 to 31 March 2023.
Suppose you buy an asset at the value of £100k. Usually, a Writing-Down Allowance of 18% would allow you to save £8,524 over three years. However, the relief is limited to the first year and equates to 130% with the super-deduction. This will leave you with a return of £24,700 on the £100k asset (+£16,176).
The super-deduction is structured in a similar way to the annual investment allowance.
For example, 4yrs 5% hire purchase from the lender. The interest on a £100k hire purchase agreement over the period would be £10,299
Hence, the £24,700 tax relief from the super deduction is enough to cover the interest on the loan twice over. Thus, the first year is essentially free.
Companies can claim 130% of the cost of the introductory rate for plants and machinery, except for cars, in the tax year in which the assets are bought. To qualify:
The expenditure has to have been incurred on or after 1 April 2021, and before 1 April 2023 and must not come from a contract entered into before 3 March 2021
The asset must be new.
It must not be provided for leasing (unless the lease is of background plant or machinery within a building)
The super-deduction is valid for the following qualifying assets:
IT hardware and software
Office furniture
Trucks and vans (not cars)
Solar panels acquired through green finance
Electric vehicle charge points
Construction plant and machinery (including cranes and diggers)
Refrigeration units
Computer numerical control (CNC) and other manufacturing and engineering equipment
Compressors
The AIA enables businesses to claim back 100% of the cost of qualifying plant and machinery in the year of acquisition.
It is essential to know that capital allowances are calculated by evaluating the expenditure on the actual car and not the purchase price, as is the case with benefit-in-kind. Capital allowances are now available where simplified expenses are claimed.
The government uses capital allowances to accelerate the transition to more environmentally friendly cars. New and unused vehicles with zero CO2 emissions can avail of the total 100% first-year allowance. Cars with CO2 emissions below 50g/km can claim an 18% writing down allowance in the main l pool. Vehicles with higher CO2 emissions will be placed in the special rate pool (6% rate of capital allowances). Any car that you use privately will be placed in a separate pool as allowances will be restricted by the amount of private use.
Businesses which are not using the cash basis can claim capital allowances for capital items such as plant and machinery, tools and equipment. If you have a balance of £1,000 or less in your main (general) pool or special rate pool, you can claim capital allowances (called the small pools allowance) on the total amount of the asset. You cannot claim the small pools allowance and the writing down allowances.
What items fall into the special rate pool?
The main items in this pool will be long-life assets, integral features or cars with higher carbon dioxide (CO2) emissions.
These items only get a writing down allowance at 6% each year, but except for cars, you should be able to claim the annual investment allowance first before using the special rate pool.
Check your asset finance funding options with our 3-minute eligibility checker on this page – it’s free and there’s no obligation!
Yes. Startups and SMEs can claim AIA as long as they invest in qualifying capital assets.
Please note that the information above is not intended to be financial advice. You should seek independent financial advice before making any decisions about your financial future.
It’s important to remember that all loans and credit agreements come with risks. These risks include non-payment and late-payment of the agreed repayment plan, which could affect your business credit score and impact your ability to find future funding. Always read the terms and conditions of every loan or credit agreement before you proceed. Contact us for support if you ever face difficulties making your repayments.
Funding Options, now part of Tide, helps UK firms access business finance, working directly with businesses and their trusted advisors. Funding Options are a credit broker and do not provide loans directly. All finance and quotes are subject to status and income. Applicants must be aged 18 and over and terms and conditions apply. Guarantees and Indemnities may be required. Funding Options can introduce applicants to a number of providers based on the applicants' circumstances and creditworthiness. Funding Options will receive a commission or finder’s fee for effecting such finance introductions.
Joe has worked in the alternative lending space since 2015. During this time he has helped hundreds of SMEs access millions in essential funding ranging from long-term asset-backed lending to short-term unsecured revolving credit lines and beyond. In his role, Joe manages and supports a large team of Credit Finance specialists.