"Ahhh, no, your extension only extends the time to pay, but does not delay/defer the obligation to pay"
Hello,

Actually, the first part of that statement is incorrect, and thank you RooCat for bringing it to my attention. In fairness, the second part of the statement is true, but I'll offer my 2 cents to clarify the whole statement anyway.

An extension, filed timely, is to postpone the filing of one's tax return. It does not, repeat DOES NOT, extend any time to pay. Your due date IS April 15th of the following year whether you can pay it or not. Failure to Pay Penalties and Interest begin after that date. If you did not, however, file an extension and filed later with a balance due, you would also incur the additional Failure to File Penalty. Therefore, it is imperitive that you either file your return or file an extension and minimize your tax debt as soon as possible instead of adding to it.
Installment Agreements are available, in most instances, but are not worth obtaining if you have other means to pay off the debt.
As stated in my earlier post, please call the IRS. They will be happy to assist you... Afterall, you are paying their salary... and then some.

Toni