Each TurboTax online account can only prepare one tax return for one person. And, unless you qualify to file for free, each account will have separate fees. It probably would have been more cost-effective to purchase and install TurboTax on your own computer from a CD or download.
With your current joint tax return, one spouse is the main, or top listed, taxpayer. The taxpayer whose name appears first on the form. That taxpayer can use that joint file to amend to married filing separately. The other spouse will need a new tax return file to start from scratch.
