We cannot tell you if your monthly benefits will be affected by filing a joint return. I am still unclear as to whether you have Social Security or SSI. (Supplemental Security Income). If you have Social Security -- and a SSA1099 --- there should be no effect on your monthly benefits, and it would be better for you to file a joint return so that as a couple you can get the married joint standard deduction. But the strict rules for SSI and the amount of other income you can receive, might affect your benefits---that is a question you need to ask Social Security instead of TurboTax. We know a lot more about how income tax laws work than we know about all the rules for Social Security or SSI.
Here is some information regarding SSI and some things that can affect your benefits:
https://www.ssa.gov/ssi/amount
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
