I'm reading different things about this. Some say "no" it has to be mailed in. Others say "yes" it can be filed electronically. TaxSlayer Pro, for example, says this: "Amended Returns - Maryland supports electronic filing of amended return forms 502X and 505X." I think TurboTax thinks "no" but not sure who's right. Thanks.
https://support.taxslayerpro.com/hc/en-us/articles/[phone number removed]-Maryland-State-Tax-Informa...
