How Does Combined Income Affect the Taxation of Social Security Benefits?

Combined income is a key factor in determining whether your Social Security benefits will be taxed and to what extent. The formula for calculating combined income is straightforward and includes the following components:

• Adjusted Gross Income (AGI): This includes income from wages, self-employment, interest, dividends, and other sources.
• Nontaxable interest: Income from sources like municipal bonds that are not taxed at the federal level.
• Half of your Social Security benefits: If you receive $20,000 in Social Security benefits, for example, $10,000 is added to your combined income calculation.

The idea behind using combined income to determine the taxation of Social Security benefits is to ensure that individuals with higher income levels contribute to the federal tax system while providing relief to lower-income retirees who rely more heavily on their Social Security benefits. 

While you can’t change your combined income, there are strategies to potentially reduce the taxability of your Social Security benefits. For example, you could consider lowering your taxable income by contributing to tax-deferred retirement accounts or converting some assets to Roth IRAs, where distributions are tax-free.