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Married Filing Separate Return With Unknown Spouse SSN

Software reference · Written guide Content date 1 min read

When a taxpayer's filing status is Married Filing Separately and the taxpayer does not know the spouse's SSN or ITIN, enter 000-00-0000 as the spouse's SSN to allow the program to calculate the return.

Note that when all zeros are used for the spouse's SSN, the return must be printed and mailed. It cannot be filed electronically.

Note: This is article concerns preparing an individual tax return in Tax Processors Plus. It is not intended as tax advice.

Additional Information

IRS: Form 1040 Instructions

IRS: Publication 17