See your marginal tax bracket, effective rate, and total federal income tax.
| Bracket | Rate | Income in Bracket | Tax |
|---|
The United States uses a progressive tax system, meaning different portions of your income are taxed at different rates. Only the income within each bracket range is taxed at that bracket's rate. Moving into a higher bracket does not cause all of your income to be taxed at the higher rate.
The standard deduction reduces your taxable income before tax brackets are applied. For 2025: Single filers get $14,600. Married Filing Jointly gets $29,200. Head of Household gets $21,900. If your itemized deductions (mortgage interest, state/local taxes up to $10,000, charitable giving, medical expenses over 7.5% of AGI) exceed the standard deduction, itemizing saves you more.
Your marginal rate is the tax rate on your last dollar of income, which determines the tax impact of earning additional income or taking deductions. Your effective rate is your total tax divided by your total income, representing what you actually pay on average. Someone earning $100,000 (single) has a 22% marginal rate but an effective rate of only about 15%. This distinction is critical for financial planning.
Maximize pre-tax retirement contributions (401k up to $23,500 in 2025, plus $7,500 catch-up if 50+). Contribute to an HSA if eligible ($4,150 individual, $8,300 family). Harvest investment losses to offset gains. If self-employed, deduct business expenses and consider a SEP-IRA (up to 25% of net earnings). Every dollar of deduction saves you your marginal rate in taxes.