Are you expecting a refund or expecting to owe money this year? If you're expecting a refund, then you're set and you can submit the extension with no problem. If you're expecting to owe, you're supposed to pay 90% of the expected liability when you file your extension or risk incurring an additional IRS penalty. To estimate what you owe, you can use a tax calculator such as <a rel="nofollow" target="_blank" href="
https://turbotax.intuit.com/tax-tools/calculators/taxcaster/">https://turbotax.intuit.com/tax-tools/...> or prepare as much of your return as you can at <a rel="nofollow" target="_blank" href="
https://turbotax.intuit.com/">https://turbotax.intuit.com/</a> then calculate 90% of what you expect to owe.
