Capital Allowances Calculator

⚠️ Important Disclaimer — Please Read CarefullyThis calculator gives a simplified first-year estimate only and is not tax advice. Capital allowances are highly fact-specific: the correct treatment depends on how each asset is classified (main rate, special rate, integral feature, structure), whether full expensing, AIA, the 40% first-year allowance or writing-down allowances apply, AIA sharing across groups, accounting-period timing, and disposals. Embedded fixtures in property are commonly under-claimed and need a specialist survey. Rates shown are for 2026/27 based on information available at the time of publication and may since have changed. The Tax Lead Limited accepts no liability for any loss arising from use of this calculator. Always seek professional advice before making any decisions.

Book a Free Discovery Call →