Effective Tax Rate
The average percentage of your total income that you actually pay in federal income tax, calculated by dividing total tax owed by total income.
How It Works
Your effective tax rate represents what you actually pay as a percentage of your income, and it's always lower than your marginal rate in a progressive system. To calculate it, divide your total federal income tax by your total taxable income. For example, a single filer with $100,000 in taxable income in 2025 owes roughly $17,400 in federal tax, giving an effective rate of about 17.4% — even though their marginal rate is 24%. The effective rate is the more useful number for budgeting and comparing tax burdens because it accounts for the graduated bracket structure. When comparing tax situations — such as evaluating a job in a different state or deciding between filing statuses — the effective rate gives you a clearer picture of actual tax impact. Financial advisors often use this metric to illustrate how much room exists between a client's effective and marginal rates. Some taxpayers with significant deductions or credits can push their effective rate well below 10%, even with six-figure incomes. Understanding the gap between marginal and effective rates helps you make better decisions about Roth conversions, capital gain harvesting, and retirement contributions.
Related Terms
Marginal Tax Rate
The tax rate applied to the last dollar of your taxable income, determined by which federal tax bracket that dollar falls into.
Tax Bracket
A range of income taxed at a specific rate within the progressive federal income tax system.
Filing Status
Your tax classification based on marital and family status, which determines your standard deduction amount, tax bracket thresholds, and eligibility for certain credits.