Get your taxes done using TurboTax

Not sure what state you are in.  I'm in Arkansas and at the beginning of the step by step filing method the state filing status is automatically shown as married filing separately  --because that's most advantageous for tax payers living in Arkansas even if they did married filing jointly on their fed return.
It explains that on the same page and gives you the opportunity to change it to married filing jointly if you want to.