For 2024 you still file a Joint return as normal. You will get a SSA-1099 from Social Security to enter into your tax return. Was your husband getting Social Security? You also enter his SSA-1099.
You can file a Joint return as normal the year your spouse died. For the next two years following a husband's or wife's death, the surviving spouse can file as a qualifying widow or widower if they have a qualifying child. That basically lets you continue to use the same tax brackets that apply to married-filing-jointly returns. After the year of death if you don't have a child you file as Single. And then next year start over with a new return and new account.
See How to file if your spouse recently died
https://ttlc.intuit.com/turbotax-support/en-us/help-article/small-business-processes/file-return-spo...
For Social Security
Up to 85% of Social Security becomes taxable when all your other income plus 1/2 your social security, reaches:
Married Filing Jointly: $32,000
Single or head of household: $25,000
Married Filing Separately: 0
If you are over full retirement age your actual ss checks won't be reduced. Otherwise they will actually reduce your payments if you make too much other income in the prior year. See SS FAQ for working after retirement
https://www.ssa.gov/benefits/retirement/planner/whileworking.html
