Also, for anyone else who comes upon this question, the instructions for form 505 state that witholdings and estimated payments must be allocated between the tw...

Upon further investigation, I am incorrect -- CA does not require filing a copy of other state returns when e-filing. I merely have to keep a physical copy for ...

Maryland allows online direct filing of form 502, so my plan is to use TurboTax Online to file Federal, California, and MD form 505, and then separately file 50...

After some thought, I wonder if perhaps TTX considers this situation one return with two forms (505 and 502), and will fill and file both as part of a single re...

See the last row of the box under instruction 1 on page one of the booklet you linked. I am a "Taxpayer who moved into or out of Maryland during the tax year an...