Purpose
This year-end bonus calculator compares separate bonus taxation and combined annual income taxation, then shows after-tax bonus, effective rate, withholding delta, and settlement adjustment for payout planning.
Key Features
- Calculate bonus tax with separate or combined taxation methods
- Compare payout strategies: one-time, split-month, and custom monthly plans
- Display withholding delta and settlement adjustment for cash-flow reference
- Support custom monthly salary arrays to simulate variable annual income
Steps
- In "Tax Calculation" mode, enter bonus, salary, deductions, and prepaid tax, then choose a tax method.
- Review after-tax bonus, tax details, and settlement result.
- Switch to "Payout Optimization" mode, enter total bonus, and choose an optimization goal.
- Optionally enter custom monthly salary or bonus arrays to compare additional scenarios.
Calculation Rules
- Separate taxation: divide bonus by 12 to determine bracket, then apply rate and quick deduction to the full bonus.
- Combined taxation: merge bonus into annual comprehensive income and calculate incremental annual tax.
- Optimization comparison: annual final tax is used as the primary comparison basis; withholding and settlement are shown as references.
Use Cases
- Pre-payout tax estimation for year-end bonus communication
- Payroll strategy discussion and budgeting
- Threshold sensitivity checks near bracket boundaries
- Personal after-tax income planning and tax strategy reference
Strategy Tips
- Compare separate bonus tax and combined-income tax first, then decide payout method.
- When amount is near key thresholds (36,000 / 144,000 / 300,000 / 420,000), test nearby values before finalizing.
- If monthly cash-flow stability matters, use split or custom monthly arrays with salary changes.
FAQ
How is year-end bonus tax calculated?
You can use separate bonus tax or combine it into annual comprehensive income. Under separate tax, bonus is divided by 12 to identify the bracket, then tax is calculated on total bonus.
Is split payout always tax-saving?
Not always. Split payout may lower the effective rate, but annual income and deduction structure can change results, so compare scenarios first.
Can these results be used directly for filing?
No. The tool is for estimation only. Actual filing should follow company payroll rules and latest local tax policies.
Notes
- This tool is for estimation only and does not replace official tax filing.
- Separate one-time bonus taxation is generally available once per tax year.
- Tax rules may change. Verify key decisions with latest regulations and professional advice.