Calculate the actual tax rate on every additional dollar of income. Understand tax bracket effects and optimize bonus, side income, and salary negotiation decisions.

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🔢 Income & Deductions

Annual Income ($)

Total income including salary, bonuses

Additional Income ($)

Bonus, side gig, or raise amount

Standard Deduction

Standard deduction based on filing status

📊 Results

Marginal Tax Rate
-
Tax rate on additional income

Original Tax

Effective rate: -

New Total Tax

Effective rate: -

Additional Tax

Extra tax from added income

After-Tax Additional

Take-home from extra income

Tax Bracket

📖 Understanding Marginal Tax Rate

Marginal vs Effective Rate

Marginal rate is the tax rate on your next dollar of income. For example, earning an extra $10,000 might be taxed at 22%. Effective rate is your total tax divided by total income — usually lower due to progressive brackets.

Why Marginal Rate Matters

Knowing your marginal rate helps: 1) Negotiate salary knowing take-home pay; 2) Decide whether to take extra work; 3) Plan bonuses; 4) Optimize retirement contributions and investments.

2024 US Federal Tax Brackets (Single)

10%: $0-$11,600 | 12%: $11,601-$47,150 | 22%: $47,151-$100,525 | 24%: $100,526-$191,950 | 32%: $191,951-$243,725 | 35%: $243,726-$609,350 | 37%: $609,351+