I need to know if I need to file Injured spouse form this year since my husband worked all last year, they did not take anything out of his check for back-pay for SSI

[KrisD15]

No. Injured Spouse will only protect you if your spouse has past due debt. He'll have to pay the tax on the back pay. You can file separately, but the combined tax bill will be the same if not more then when you file Jointly.