Documentation

What It Does

The corporate income tax calculator estimates taxable income, corporate tax payable, and after-tax net profit based on revenue, costs, and tax adjustments. It helps with budgeting and tax burden analysis.

Calculation Method

  • Accounting Profit = Total Revenue - Costs and Expenses
  • Adjusted Tax Base = Accounting Profit - Tax-exempt Income + Upward Adjustment - Downward Adjustment
  • Taxable Income = max(Adjusted Tax Base - Loss Carryforward, 0)
  • Corporate Tax Payable = Taxable Income x Tax Rate
  • After-tax Net Profit = Accounting Profit - Corporate Tax Payable

How to Use

  1. Select a company type or choose a custom tax rate.
  2. Enter revenue, costs, tax-exempt income, tax adjustments, and loss carryforward.
  3. Run calculation to view tax payable and profit outcomes.
  4. Copy or export the result for reporting and comparison.

Typical Scenarios

  • Annual budgeting and pre-filing estimation
  • Tax burden sensitivity analysis in business planning
  • Data pre-check before annual tax settlement
  • Multi-scenario profit comparison for decision making

Rate Reference

Company TypeReference Rate
General Enterprise25%
Small and Low-profit Enterprise20%
High-tech Enterprise15%

Notes

  • This tool provides estimation only and does not replace professional filing advice.
  • Final filing should follow current tax regulations, incentives, and local authority practice.
  • Verify loss carryforward rules and incentive eligibility based on official guidance.