Get your taxes done using TurboTax

To compare Joint to MFS.  If you are using the Online version, do NOT change anything on your return.  You would have to start with a new account and do a test return.  You don't have to pay unless you want to print it out.  So you might need 3 accounts, one for Joint and two MFS, one for each spouse.

How to Compare Joint to Married Filing Separately
https://ttlc.intuit.com/questions/2895312-how-can-we-compare-married-filing-jointly-with-married-fil...

How to start another return in the Online version
https://ttlc.intuit.com/questions/1894512-how-do-i-start-a-second-return-in-turbotax-online

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