Get a Free Quote →
🏢 Capital Allowances Calculator

How much tax relief can you claim on your business assets?

Calculate your capital allowances for 2025/26 — covering AIA, full expensing for limited companies, and writing down allowances on plant, machinery and vehicles.

📅 2025/26 ⚡ £1m AIA ✅ Full Expensing 🚖 18% & 6% WDA Pools
£0Total Allowances
£0Tax Saving
£0Remaining WDV
0Assets Entered
Calculator

Enter Your Business Assets

Add each asset you've purchased this tax year. Select the correct allowance type and we'll calculate your deduction, tax saving and any remaining pool balance.

🏢 Business Details & Assets
Full expensing is only available to limited companies
Used to calculate your tax saving

Allowances Summary

Total deductions claimable this year

Annual Investment Allowance (AIA)
100% deduction, up to £1m
£0
Full Expensing (Ltd Co only)
100% on new main pool assets
£0
First Year Allowance (50%)
Special rate pool assets
£0
Main Pool WDA (18%)
Writing down allowance
£0
Special Rate Pool WDA (6%)
Long-life & integral features
£0
Total Allowances
Reduces taxable profit by this amount
£0

Tax Impact

What this means for your tax bill

Total Asset Spend
Gross capital expenditure
£0
Total Allowances Claimed
Deducted from taxable profit
£0
Remaining WDV (pools)
Carried forward to next year
£0
Tax Rate Applied
Corporation Tax
25%
Estimated Tax Saving
Allowances × tax rate
£0

Asset-by-Asset Breakdown

Allowance type and deduction for each asset entered

AssetCostAllowance TypeDeductionWDV Remaining
100% — AIA

Annual Investment Allowance

Available to all businesses. 100% deduction on most plant and machinery up to £1,000,000 per year. Cannot be used on cars.

100% — Full Expensing

Full Expensing

Limited companies only. 100% first-year deduction on new (not second-hand) main pool assets. No monetary cap. Introduced April 2023, now permanent.

50% — FYA

First Year Allowance

50% deduction in year one on new special rate pool assets (long-life assets, integral building features) for limited companies.

18% — Main Pool WDA

Main Pool (18% WDA)

General plant, machinery, vans, most equipment. If AIA/full expensing not used, 18% writing down allowance applies annually on the pool balance.

6% — Special Rate WDA

Special Rate Pool (6% WDA)

Long-life assets (over 25-year life), integral features (heating, lifts, electrical systems), solar panels. 6% WDA per year.

Cars — varies

Cars

0g/km CO₂: 100% FYA. 1–50g/km: main pool 18% WDA. Over 50g/km: special rate 6% WDA. Cars cannot use AIA or full expensing.

Maximising your capital allowances?

The right allowance strategy can significantly reduce your tax bill. HOMF can review your asset purchases and make sure you're claiming everything you're entitled to.

⚠️ This calculator provides estimates based on 2025/26 capital allowances rules. Full expensing and 50% FYA apply to limited companies only on new (not second-hand) qualifying assets. AIA and WDA rules are simplified here — actual claims may differ based on accounting periods, connected party rules, short-life asset elections and other factors. This is not tax advice. Always consult a qualified accountant before making capital allowance claims.