It seems like your husband is hiding his economic information not just from you but also from the government (which is a crime). He also may be looking to hang onto the marriage and thinks that this is the way to do it (by stalling matters). Remember, regardless of what your husband did, you are required to file your income tax returns as required by law.
You might want to talk to a Divorce Mediator. Sometimes avoiding litigation is a goal for some people (like you) and mediators sometimes can help. I don't know that your husband would be willing, but you could both meet with a mediator to try to work out some of your issues. I am sorry for your problems.
Being that you are in litigation, you should run your question by your own attorney (assuming you have one). Maybe they can help find a solution for you.
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It is unclear whether you are represented by counsel; what steps you have taken to obtain/ compel your husband to provide 'discovery' of his finances; what stage of the action you are in; how many court orders have been issued; etc.
I cannot just recommend a course of action without more information. If you desire to discuss your matter in detail, kindly contact me through the link below.
Your attorney should know what to do to compel financial disclosure. If you're trying to litigate your contested divorce on your own, you're going to run into troubles.
However, your question indicates a potential additional problem: if he did not file personal income tax returns - did you?
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