Go here to complete the
2016 Extension.
If you can't
complete your taxes by April 18, you’ll need to file an extension to avoid
late-filing or late-payment penalties.
Your extension doesn't give you extra time to pay your taxes.
- We'll help you estimate if you
owe taxes or will get a refund
- If you'll owe, you'll need to
pay estimated taxes by April 18
- If you'll get a refund, your
refund will not be processed until you complete your tax filing
Once your
extension is approved, you will have until Oct
17th to file your return.
https://turbotax.intuit.com/tax-tools/tax-tips/Efile/Filing-an-Income-Tax-Extension/INF12040.html
https://ttlc.intuit.com/replies/3301811