We answered that on your other post. Is he getting Social Security now and you entered the SSA-1099? Yes the taxable amount is calculated on your total joint income.
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
For 2023 Social Security is on line 6a and any taxable amount on 6b.
