Changing Your Company's Accounting Period: How It Affects Your CT600
What happens to your CT600 when you change your accounting period? Guide to the rules, restrictions, and filing implications.
Plain-English guides to UK Corporation Tax and CT600 filing.
What happens to your CT600 when you change your accounting period? Guide to the rules, restrictions, and filing implications.
Every corporation tax relief for UK companies in 2025/26 — R&D, creative industry, patent box, capital allowances, and more.
How to claim a corporation tax refund from HMRC. Covers overpayment, amended returns, loss carry-back, and how long refunds take.
New limited company timeline: when to register for corporation tax, your first accounting period, CT600 deadline, and payment date.
Find out how long HMRC takes to process your CT600 company tax return, when you'll get your tax calculation, and what to do if it's taking too long.
HMRC charges interest on late corporation tax at base rate + 4% — currently 7.75%. Learn current rates, how interest is calculated, and how to avoid it.
HMRC cancelled Making Tax Digital for Corporation Tax in July 2025. Here's what happened, what it means for your company, and what filing changes do affect you now.
Can't afford your corporation tax bill? Learn how to set up an HMRC Time to Pay arrangement and avoid penalties.
Company struck off or dissolved? You may still owe corporation tax. When a final CT600 is required and how to restore a company.
How UK companies pay corporation tax on crypto. Buying, selling, mining, staking, DeFi, and NFTs — what goes on your CT600.
Step-by-step guide to filing a nil Corporation Tax return for your dormant limited company. Avoid penalties — even dormant companies must file with HMRC.
What iXBRL accounts are, why HMRC requires them with your CT600, and how to generate them without expensive software. Plain English guide for company directors.