Irs Tax Rates 2024 Married Jointly. As your income goes up, the tax rate on the next layer of income is higher. The irs released these brackets and income levels for 2024:

Section 6621 of the internal revenue code establishes the interest rates on overpayments and underpayments of tax. For 2024, the seven federal income tax rates are 10%, 12%, 22%, 24%, 32%, 35% and 37%.