An extension from the IRS gives you time but you still have to pay by April 18, 2011

TULSA - The extension only gives you more time to file the actual return. This year tax returns are due by April 18.

Don't panic, you still have a month to figure it out.

The IRS offers this information so you know which course of action is best for you:

If you cannot pay the full amount of taxes you owe by the mid-April deadline, you should still file your return by the deadline and pay as much as you can to avoid penalties and interest. You should also contact the IRS to discuss your payment options at 800-829-1040. The agency may be able to provide some relief such as an installment agreement.

More than 75 percent of taxpayers eligible for an Installment Agreement can apply using the Web-based Online Payment Agreement application available on IRS.gov. To find out more about this simple and convenient process type "Online Payment Agreement" in the search box on the IRS.gov homepage.

Request and Extensioni of Time to File - But Pay on Time
If the mid-April tax deadline clock runs out, you can get an automatic six-month extension of time to file through October 17. However, this extension of time to file does not give you more time to pay any taxes due. If you have not paid at least 90 percent of the total tax due by the April deadline you may also be subject to an Estimated Tax Penalty.

Form 4868 , Application for Automatic Extension of Time to File U.S. Individual Income Tax Return.

Or you can call 800-TAX-FORM (800-829-3676) and have a paper form mailed to you.