How Long Does HMRC Take to Process a CT600? Processing Times Explained
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.
Plain-English guides to UK Corporation Tax and CT600 filing.
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.
How IR35 status affects your CT600. Practical guide for contractors filing corporation tax — inside IR35, outside IR35, or mixed.
Received an HMRC enquiry about your CT600? What triggers enquiries, your rights, what HMRC can ask, and how to respond.
How company cars affect corporation tax. Capital allowances for cars, benefit in kind rules, and CT600 treatment.
Company struck off or dissolved? You may still owe corporation tax. When a final CT600 is required and how to restore a company.
Corporation tax for startups. Registration, deadlines, expenses, R&D relief, first CT600 filing, and mistakes to avoid.
Find out whether your limited company needs to file a CT600 Corporation Tax return with HMRC. Covers dormant companies, new companies, losses, and exemptions.
Every corporation tax relief for UK companies in 2025/26 — R&D, creative industry, patent box, capital allowances, and more.
Can't afford your corporation tax bill? Learn how to set up an HMRC Time to Pay arrangement and avoid penalties.
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.
New limited company timeline: when to register for corporation tax, your first accounting period, CT600 deadline, and payment date.
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.