It depends but if SSDI income in your only source of income, you will not need to report your SSDI on an income tax return. (You will have no income tax filing requirement in this instance.)
However, if you are receiving Social Security Disability Income (SSDI) and you are required to file a tax return, you will include these disability payments on your income tax return but depending on your income level, you may owe no taxes on his SSDI.
According to the SSA:
The first thing you need to understand is that Social Security Disability payments aren't always taxable. If you do not make more than $25,000 a year and file as an individual or your household income is less than $32,000 per year and you file jointly, you will not have to pay taxes on your Social Security Disability benefits. If your income exceeds those limits, a portion of your disability payments may indeed be taxable.
The bad news is that, you may have to pay taxes on your disability benefits if your income exceeds a certain amount. The good news is that you will never have to pay tax on all of your disability benefits. In fact, no matter how much you make, you will never have to pay taxes on more than 85 percent of your Social Security Disability income
For use this link for more information: http://www.disabilitybenefitscenter.org/how-to/social-security-disability-taxes
If you need to include your SSDI on your income tax return, please see the following instructions: