If I don’t know my husbands information n don’t know how to contact him, n don’t know if he will even give it to me. Do I need that to file my taxes separately?

Married couples have the option to file jointly or separately on their federal income tax returns. The IRS strongly encourages most couples to file joint tax returns by extending several tax breaks to those who file together. In the vast majority of cases, it's best for married couples to file jointly, but there may be a few instances when it's better to submit separate returns.

When couples file separately, the IRS requires taxpayers to include their spouse's information on their returns. According to the IRS, if you and your spouse file separate returns and one of you itemizes deductions, the other spouse will have a standard deduction of zero.

A spouse who is Married Filing Separately is not required to provide the Social Security card for the other spouse, although the return cannot be e-filed without the spouse's Social Security number.

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Tax Tips for Separated Couples - TurboTax Tax Tips & Videos