A man reaching retirement age wanted to estimate his tax liability. With $3,178 monthly Social Security, $2,090 pension, and $800,000 in a 401(k), he aimed to use the 4% rule to calculate taxes. Calculating taxable income and Social Security benefits revealed an estimated tax bill of $10,841, based on 2025 federal income tax brackets.

To estimate tax liability in retirement, a man with Social Security, pension, and 401(k) income needs to calculate taxable income and Social Security benefits. By adding these and applying 2025 federal income tax brackets, an estimated tax bill of $10,841 is obtained. Additional factors like state and local taxes may also impact taxes.

When estimating taxes in retirement, factors like state and local taxes, deductions, and varying income levels should be considered. A financial advisor can help navigate the complexities of retirement planning, ensuring a comprehensive strategy that aligns with financial goals and obligations.

Read more at Yahoo Finance: With $800k in a 401(k) and $5,270 Monthly Income, What Will My Retirement Taxes Be?