Why turbo tax calaulate my blended tate 31. 9%?

A blended tax rate, also known as the effective tax rate, is derived from a number of factors. The effective tax rate for individuals is the average rate at which their earned income, such as wages, and unearned income, such as stock dividends, are taxed. If you received income from a variety of things like stocks and bonds, interest, dividends, or self-employment, they may all play a role in determining your blended tax rate. 

Note that taxes are often calculated using a different method than the tax tables. For example, if you have capital gains, the tax on those is calculated at the capital gain rate for your income level. If you are self-employed, you may have self-employment taxes in addition to income taxes.

For Federal income taxes, the tax rate brackets for 2022 are 10%, 12%, 22%, 24%, 32%, 35%, and 37%. To see how the tax brackets apply to you for this year, and for a tool to determine your marginal (the highest part of your income) tax rate, see here.

Also, this year, several tax credits have been lowered to amounts before the coronavirus pandemic—or eliminated entirely. This includes the Child Tax Credit, the Child and Dependent Care Credit, and more. Check if these changes affected your net tax.

Double-check your entries for income, taxes paid, and deductions to confirm they are correct. Compare the individual line items with last year's return as well, if applicable.

See this help article for more information.

You can preview your return before filing to review the forms that TurboTax has prepared from your entries and to find out how your taxes were calculated. See here for details.