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State tax filing

It is not enough to pay your entire tax amount, you have to pay it over the course of the year. The income tax in the US is a pay-as-you-go system.


If you would have withheld Maryland taxes during the year, you likely would have avoided the underpayment penalty. But I understand that sometimes this doesn't happen.


And unlike the federal income tax, where you are excused the underpayment penalty if your tax due is less than $1,000, for Maryland, you are excused only if the tax due is $500 or less. 


Please see the Maryland 502UP form to get an idea.

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