TurboTax Online lets you prepare and file (electronically or on paper) up to five state returns per federal tax return.
If you need to prepare returns in six or more states, consider the TurboTax CD/Download software instead. Although the software only lets you e-file up to three states per federal return, you can prepare and paper-file as many states as you want.
Tip: When preparing returns in multiple states, it's best to do your nonresident and/or part-year resident state returns first, and your resident state last.