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I am afraid that if the long term disability company wants proof of your income via your income tax returns to show that all you are receiving is SSDI and no other income from work, then they have a right to proof. However, if you owe no taxes because of your disability income status, they cannot legally force you to file income taxes as long as you provide them all of the financial information they are seeking to verify your income and any offsets they may be due. If they refuse to accept alternative proof, then your recourse is that you have to file suit against them for breach of contract
in bad faith.
You start by sending them a LETTER telling them you are willing to provide them with documentary proof of your income, but you are not compelled to file taxes when you owe no income taxes and if they are not willing to accept alternative proof then they are in bad faith in denying your benefits and you will pursue them for benefits, damages and attorney's fees for their bad faith refusal to accept alternative proof of income.
If they refuse, then you have to sue them in court. That is your legal option here.
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