Browse all calculators →
UK marginal relief
NL dual-rate structure
Credits reduce tax only
Deductions reduce taxable profit
2026 tax year
Home›Calculators›Tax and Legal›Corporation Tax Calculator

Corporation Tax Calculator 2026
UK and Netherlands

Calculate corporate tax, taxable profit, and net profit after tax for UK and Netherlands companies. Includes UK marginal relief, deductions, and credits.

🏢
Your Corporation Tax Estimate
Tax Settings
tax
UK and Netherlands only in V1.
year
Default tax year is 2026.
Core Inputs
£
Top-line business revenue.
£
Direct production or delivery costs.
£
Overheads and operating costs.
£
Annual depreciation expense.
£
Annual interest cost.
£
Other deductible adjustments.
Advanced Inputs Show
£
Applied against taxable profit before credits.
£
Applied against taxable profit before credits.
£
Reduces tax only, not profit.
Pre-tax profit is zero or negative. Corporate tax may not apply in this simplified model.
Taxable profit is zero after deductions and allowances.
Final corporate tax is zero because credits fully offset tax.
UK marginal relief applies in this result. The £50,000 and £250,000 limits are reduced for associated companies and short accounting periods.
Corporate Tax
—
final tax after credits
Net profit after tax
—
—
Corporate Tax
—
final corporate tax
Net Profit After Tax
—
after corporation tax
Effective Tax Rate
—
final tax ÷ pre-tax profit
Breakdown
With Deductions + Credits
Taxable profit—
Corporate tax—
Net profit after tax—
Without Deductions + Credits
Taxable profit—
Corporate tax—
Net profit after tax—
Profit and Tax Summary
Pre-tax profit
Corporate tax
Net profit after tax
✦ Cal, AI Explanation
—
💬 Ask Cal about corporate tax
Cal
Your corporation tax estimate is ready. Ask me about tax bands, deductions, credits, or why final tax can differ from taxable profit.

🏢 Calculator Notes

Deductions reduce taxable profit
Credits reduce tax only
UK may trigger marginal relief between thresholds
NL uses a two-tier corporate tax rate
Fast simplified estimate only

Related Calculators

Profit Margin Calculator→ Break-even Calculator→ VAT Calculator→ Income Tax Calculator→

Guide

Corporation Tax Explained→

How this corporation tax calculator works

This calculator starts with accounting profit, adjusts to taxable profit using loss carryforward and capital allowances, applies the country tax rate, then subtracts R&D credit from tax only. It is intentionally simplified and does not model deferred tax, multi-entity structures, regional taxes, or advanced accounting adjustments.

StageWhat Happens
Accounting profitRevenue less direct, operating, and adjustment costs
Taxable profitPre-tax profit reduced by carryforwards and capital allowances
Tax and creditsCountry tax applies first, then R&D credit reduces tax only

UK and Netherlands tax logic in this build

The UK applies 19% for taxable profits up to £50,000, 25% above £250,000, and marginal relief between those thresholds in this simplified 2026 model. The Netherlands applies 19% up to €200.000 and 25.8% above that threshold in this 2026 model.

Deductions vs credits

Deductions reduce profit before tax is calculated. Credits do not change profit and only reduce the tax bill after tax has already been calculated. That distinction is critical because it changes both the tax result and the reported net profit after tax.

Limitations of the calculator

This build is simplified on purpose. It does not include associated company threshold adjustments, short accounting period scaling, deferred tax, group relief, state or regional taxes, multi-entity structures, or country-specific accounting edge cases.