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

5 results for “national insurance”Clear search
23 February 2026

Sole Trader vs Limited Company Tax: Which Saves You More in 2025/26?

Complete tax comparison between sole trader and limited company structures. Income tax vs corporation tax, national insurance, dividends, and the crossover point.

corporation-taxsole-traderlimited-companytax-planning
23 February 2026

Sole Trader vs Limited Company: Tax Comparison 2025/26

Detailed tax comparison between operating as a sole trader vs limited company in 2025/26. Income Tax vs Corporation Tax, National Insurance, dividends, and when to incorporate.

corporation-taxsole-traderlimited-companytax-comparisonincorporation
23 February 2026

Employer National Insurance & Corporation Tax: What You Can Deduct

How employer NI contributions affect your Corporation Tax bill. What's deductible, Employment Allowance, and reporting on your CT600.

ct600national-insuranceemployercorporation-taxpaye
21 February 2026

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.

director salaryoptimal salarycorporation taxnational insurancedividendslimited companytax efficiency2025-26
21 February 2026

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.

employer nicnational insurancecorporation taxallowable expensesemployment allowancect600payroll