What is included in gross income for filing requirements when income includes Social Security and proceeds on a 1099-B show the cost basis and the actual gain is small?

Catbrother · ‎12-07-2019

This married couple's social security is $28500, pensions of $22,588 and proceeds from a bond that matured on 1099-B of $100,000 and the cost basis reported as $100,000. Do they need to file? Both over 65.