I tried filing this online using that link, but the extension was rejected by the IRS! Error message: "Taxpayer TIN in the Return Header must not be the same as a TIN of a previously accepted electronic return for the return type and tax period indicated in the tax return." But I haven't filed anything this year. So something is wrong with TurboTax. I had to call the IRS, they couldn't figure it out, they think it's TurboTax fault, and the IRS guy said, just print out the extension form and mail it in . Big Hassle!
