After you file

Bsch4477

If your combined income is under $25,000 (single) or $32,000 (joint filing), there is no tax on your Social Security benefits.
For combined income between $25,000 and $34,000 (single) or $32,000 and $44,000 (joint filing), up to 50% of benefits can be taxed.
With combined income above $34,000 (single) or above $44,000 (joint filing), up to 85% of benefits can be taxed.