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Plain-English guides to UK Corporation Tax and CT600 filing.

8 results for “AIA”Clear search
23 February 2026

Capital Allowances on Your CT600 — AIA, WDA, and Full Expensing Explained

How to claim capital allowances on your CT600 for equipment, vehicles, and machinery. Covers AIA, writing down allowances, full expensing, and which CT600 boxes to use.

capital-allowancesct600aiacorporation-taxtax-relief
23 February 2026

CT600 Capital Allowances — AIA, Full Expensing, and Writing Down Allowances Explained

Complete guide to claiming capital allowances on your CT600. Covers Annual Investment Allowance (AIA), full expensing, writing down allowances, and which boxes to fill in.

ct600capital-allowancesaiacorporation-taxguide
23 February 2026

Annual Investment Allowance (AIA): Claim £1M Tax Relief on Your CT600

How to claim Annual Investment Allowance on your CT600. £1 million limit, qualifying assets, how to calculate, and common mistakes.

ct600capital-allowancesaiatax-relief
22 February 2026

Capital Allowances on CT600: Claiming for Equipment, Vehicles & Computers

Complete guide to claiming capital allowances on your CT600. Covers Annual Investment Allowance (AIA), writing down allowances, first-year allowances, full expensing, and which CT600 boxes to fill in.

ct600capital allowancesAIAequipmentcorporation tax
22 February 2026

Full Expensing: 100% Capital Allowances Made Permanent (2025 Guide)

Full expensing lets your company deduct 100% of qualifying plant and machinery costs immediately. Here's who qualifies, what's included, and how to claim on your CT600.

capital allowancesfull expensingAIAcorporation taxCT600
21 February 2026

Capital Allowances and Corporation Tax: How to Claim Tax Relief on Business Assets

How to claim capital allowances on your CT600 — AIA, writing down allowances, full expensing, first-year allowances, and which assets qualify for Corporation Tax relief.

capital allowancescorporation taxaiawriting down allowancefull expensingct600tax reliefbusiness assets
19 February 2026

Annual Investment Allowance (AIA): Claim Up to £1 Million in Tax Relief

How to claim AIA on your CT600 for plant and machinery purchases. What qualifies, what doesn't, and common mistakes that cost small companies money.

capital allowancesAIAplant and machineryCT600tax reliefcorporation taxfull expensing
19 February 2026

Capital Allowances for Small Companies — AIA, Full Expensing & Cars

How to claim capital allowances on your CT600. AIA, full expensing, car rules, and writing down allowances for small companies.

capital allowancesAIAcorporation taxct600tax deductions