Optimal Director Salary 2025/26 Tax Year
Find the most tax-efficient director salary for 2025/26. We explain the NIC thresholds, employer costs, and how to save thousands through your limited company.
Blog
Plain-English guides to UK Corporation Tax and CT600 filing.
75 results for “NI”Clear search
Disallowable Expenses for Corporation Tax (Full List)
Which expenses can't you deduct on your CT600? Complete guide to disallowable expenses for corporation tax — entertaining, fines, personal costs, and more.
Corporation Tax on Bank Interest: How It Works
How is bank interest taxed for UK limited companies? Learn the CT600 treatment, reporting requirements, and how to reduce your corporation tax on savings interest.
Corporation Tax for Investment Companies
How does corporation tax work for investment companies? Guide to holding investments through a limited company — dividends, capital gains, property, and filing your CT600.
Accountant vs DIY CT600 Filing: Honest Comparison
Should you pay an accountant or file your CT600 yourself? An honest comparison of costs, time, risks, and when each option makes sense for UK limited companies.
Employer NIC: Corporation Tax Deduction Guide
Is employer NIC an allowable deduction for corporation tax? Yes. Learn how employer National Insurance works, current rates, the Employment Allowance, and how to claim on your CT600.
Company Tax Return (CT600) vs Annual Accounts: What's the Difference?
CT600 vs annual accounts: one goes to HMRC, one to Companies House. What each is, when they are due, and how they relate.
Working from Home Tax Relief for Limited Companies: What You Can Claim
How to claim work-from-home expenses through your limited company. Flat rate method, actual costs, and allowable expenses.
Corporation Tax on Cryptocurrency: How to Report Bitcoin & Crypto on Your CT600
How UK companies pay corporation tax on crypto. Buying, selling, mining, staking, DeFi, and NFTs — what goes on your CT600.
Every Corporation Tax Relief Available to UK Companies (2025/26 Complete List)
Every corporation tax relief for UK companies in 2025/26 — R&D, creative industry, patent box, capital allowances, and more.
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.
Do I Need to File a CT600? When Your Company Must Submit a Tax Return
Find out whether your limited company needs to file a CT600 Corporation Tax return with HMRC. Covers dormant companies, new companies, losses, and exemptions.