Question: can you amend mfs to mfj?
Answer: Amending Filing Status from MFJ to MFS (or MFS to MFJ) You can amend a Married Filing Joint (MFJ) return to a Married Filing Separate (MFS) return and vice versa. ... NOTE: Once you have filed your tax return as Married Filing Joint (MFJ), you CANNOT amend your filing status after the April 15th deadline.