First Year Corporation Tax: What New Limited Companies Need to Know
Just incorporated? Here's your complete guide to corporation tax in your first year — registration, deadlines, what to file, and how to pay.
Blog
Plain-English guides to UK Corporation Tax and CT600 filing.
28 results for “deadlines”Clear search
How to Pay Corporation Tax: Complete HMRC Payment Guide 2025/26
Step-by-step guide to paying your corporation tax bill. Covers all payment methods, deadlines, payment references, and what happens if you pay late.
CT600 Deadline: When to File Your Corporation Tax Return (and When to Pay)
When is your CT600 due? Filing deadlines, payment deadlines, and how they differ from Companies House deadlines. Avoid late penalties.
Corporation Tax Deadlines 2026: When You Need to File and Pay
All corporation tax deadlines for 2026 — CT600 filing dates, payment due dates, and penalties for late filing. Key dates for UK limited companies.
First Year Corporation Tax: A Complete Guide for New Companies
New limited company? Learn when to register for corporation tax, your first accounting period, filing deadlines, and how to avoid common first-year mistakes.
CT600 Nil Return: How to File When Your Company Has No Trading Activity
Learn how and when to file a CT600 nil return for a dormant or non-trading company, including deadlines, penalties, and step-by-step guidance.
Corporation Tax Deadlines Calendar 2026
Full 2026 calendar of Corporation Tax deadlines — CT600 filing dates, payment due dates, penalty dates, and quarterly instalment dates month by month.
Corporation Tax for Small Businesses: 2026
Complete 2026 guide to corporation tax for small businesses. Covers rates, allowable expenses, filing deadlines, payment dates, and tips to reduce your tax bill legally.
Company Formation & Corporation Tax Registration
Step-by-step guide to registering for Corporation Tax after forming a limited company. Covers CT41G, UTR numbers, deadlines, and first CT600 filing.
Just Incorporated? Your First CT600 Timeline: Key Dates You Can't Miss
New limited company timeline: when to register for corporation tax, your first accounting period, CT600 deadline, and payment date.
Corporation Tax for Startups: The Complete Guide for New Limited Companies
Corporation tax for startups. Registration, deadlines, expenses, R&D relief, first CT600 filing, and mistakes to avoid.
What Happens If You Don't File Corporation Tax? Penalties, Interest, and How to Fix It
Missed your CT600 deadline? Learn about HMRC late filing penalties (fixed penalties escalating to 10% tax surcharges), interest charges, how to appeal, and the fastest way to get back on track.