Generally, Social Security Income (SSI) is not taxable. However, a portion of your SSI may be taxable if you have other income in addition to what you receive from Social Security. Other income can include wages, self-employment, interest, dividends or other taxable income that you report on your tax return.
Go to this section in Credit Karma Tax: Social Security Benefits
Credit Karma Tax will determine if your SSI is taxable by using your combined income and comparing it with the base amount allowed for your filing status.
To find out if your SSI affects your tax return: