When to include Social Security in gross incomeThere are certain situations when seniors must include their Social Security benefits in gross income. If you are married but file a separate tax return and live with your spouse at any time during the year, then all of your Social Security benefits are considered gross income which may require you to file a tax return. In addition, a portion of your Social Security benefits are included in gross income, regardless of your filing status, in any year the sum of half your Social Security plus all other income, including tax-exempt interest, exceeds $25,000 or $32,000 if you are married filing jointly.
Tax credit for seniors
Even if you must file a tax return, there are ways you can reduce the amount of tax you have to pay on your taxable income. As long as you are at least 65 years old and your income from sources other than Social Security is not high, then the tax credit for the elderly or disabled can reduce your tax bill on a dollar-for-dollar basis. However, this tax credit is only useful when you actually owe tax to the IRS.
Source:
https://turbotax.intuit.com/tax-tips/retirement/when-does-a-senior-citizen-on-social-security-stop-filing-taxes/L53Hx1v9W
