please note that extensions and any balance due are due by the original due date of the returns. since you are due a refund no extension is required. However, it's always a good idea to file an extension even if you think you are due a refund. Should the IRS find an error where you now owe the penalty for late filing is 4.5% of the balance due per month for the first 5 months. then it drops to zero. there is also a late payment penalty of .5% per month and interest. If you file more than 60 days late and owe the minimum penalty is about $500 or the unpaid tax whichever is less
a timely filed extension generally gives you until 10/15 to file and there is no late filing penalty unless you owe and file after 10/15.
you don't have to use Turbotax for the extension. you can download the current year form 4868 from the iRS website and there are other websites that allow e-filing an extension for free. If you have a state income tax, the laws vary. Some require an extension and payment if you owe. others only require payment and honor a timely filed federal extension.
