To change your filing status in TurboTax:
- With your return open, click the Personal Info tab
- On the second line of the "Personal info summary" page, your current filing status should be listed
- Click Edit on that line
- To file Married Filing Separately, first, select Married
- When the next question shows, asking "Do you want to file this return together with your spouse?", answer No.
You should not have to start over but you will need to remove any information about your spouse.
Keep in mind that if you file married filing separately means you will not get the Earned Income Credit, education credits, and other credits (exceptions are rare).
