State filing extensions
Several states allow automatic extensions of time to file your personal income tax return only if you first obtain an extension to file your federal tax return. However, in most cases, you must make a separate request for it by April 15. Some states, like Massachusetts for example, don't require you to obtain an extension if you don't owe any tax. But just like your federal return, if you are due a state refund because of too much employer withholding, you will not receive it until you file. On the other hand, if you thought you didn't owe tax but actually do, you may face some additional penalty or interest charges.
TurboTax Easy Extension makes it easy to file an extension for both your federal and state tax returns.