09/14/2026
I've encountered a surprising number of people who file Married Filing Separately (MFS) even though they could file Married Filing Jointly (MFJ).
Sometimes it's intentional. Other times, especially with military couples from different states, it's simply a two-minute snap decision to make the tax return software happy.
The problem? That decision can get expensive.
You may lose or limit college tax credits, the Child and Dependent Care Credit, the Earned Income Tax Credit, the student loan interest deduction, and even your ability to contribute to a Roth IRA.
The tax brackets can hurt too. In one simple example from the article, a married couple with one spouse earning $100,000 and the other not working would pay about $7,640 filing jointly versus $13,170 filing separately — roughly 72% more.
That doesn't mean MFS is always wrong. There are some legitimate reasons to consider it, including certain student loan situations.
The important thing is that it should be an informed decision, not just a way to make the software work.
https://gojourney.biz/married-filing-separately-mfs/