Whether or not your SSDI benefits will be subject to taxes depends on your income level. If you have income from other sources in addition to your SSDI benefits, such as wages or investment income, you may have to pay federal income taxes on a portion of your SSDI benefits.
If you are unsure whether you will owe taxes on your SSDI benefits, you may want to consult a tax professional or an SSDI attorney who can provide guidance based on your situation.