The IRS considers extravagant expenses as those that include charitable contributions, private school funding and hefty credit card payments. In addition, if you fail to provide accurate information on Form 433-A, Collection Information Statement, you can expect your agreement to be rejected.
If you don't report income that you should have reported, and it's more than 25% of the gross income shown on the return, or it's attributable to foreign financial assets and is more than $5,000, the time to assess tax is from the date you filed the return.
Or: For individual tax returns, call 1-800-829-1040, 7 AM - 7 PM Monday through Friday local time. The wait time to speak with a representative may be long. This option works best for less complex questions.
If you don't qualify for an IA through OPA, you may also request an IA by submitting Form 9465, Installment Agreement Request, with the IRS.