When to use different filing status between federal and state?

[ramsgusom]

I always file MFS due to my student loan repayment (PAYE). But turbotax gave me the option of filing MFS on Federal and MFJ on State (PA).

I am wondering who would usually use the option? I always wanted to file MFJ because of the extra deductions. Any disadvantages to choosing this option? 

[CandaceI]

Please see link to the filing status for PA, you should be fine to file MFJ regardless of fed filing status:

https://www.revenue.pa.gov/FormsandPublications/PAPersonalIncomeTaxGuide/Pages/Brief-Overview-Filing...

[re2boys]

Properly completed, there is NO difference in the tax liability between filing PA state income tax separately or jointly.  PA does not provide any additional deductions for filing joint.