INSTRUCTIONS: ARIZONA 2007 CORPORATION ESTIMATED TAX PAYMENT INSTRUCTIONS (Form 120ES) After 2007, the Arizona Department of Revenue attached instructions for completing for 120ES to the form itself. This form is used by corporations who file forms 99T, 120, 120A and 120S to make estimated tax payments. This form discusses the instructions issued for tax year 2007. This document can be found on the website maintained by the Arizona Department of Revenue. Arizona 2007 Corporation Estimated Tax Payment Instructions 120ES Step 1: The first box on the left side of the first page contains phone numbers which can be used to obtain assistance, instructions or additional copies of tax forms. Arizona 2007 Corporation Estimated Tax Payment Instructions 120ES Step 2: The first two paragraphs under "General Instructions" provide details about who should file a form 120ES. Arizona 2007 Corporation Estimated Tax Payment Instructions 120ES Step 3: The next four paragraphs contain information about how to file estimated tax payments through electronic funds transfers. Arizona 2007 Corporation Estimated Tax Payment Instructions 120ES Step 4: The next three paragraphs, which are the first in the second column, contain information about who is required to make estimated tax payments. Arizona 2007 Corporation Estimated Tax Payment Instructions 120ES Step 5: The next paragraph contains information about when to file estimated tax payments. Arizona 2007 Corporation Estimated Tax Payment Instructions 120ES Step 6: The next paragraph contains information about computing required installments of estimated payments on form 120W. Arizona 2007 Corporation Estimated Tax Payment Instructions 120ES Step 7: The next paragraph contains information about underpayment of required installments of estimated tax. Arizona 2007 Corporation Estimated Tax Payment Instructions 120ES Step 8: The last two paragraphs of the first page contains information about recomputing required installments of estimated tax. Arizona 2007 Corporation Estimated Tax Payment Instructions 120ES Step 9: The second page contains information about the specific information which must be completed on the form. This includes the ending date of the taxable year for which payment is being filed, the sequence number of the estimated payment, and the taxpayer, name and employer identification number as it will appear on your tax return. Arizona 2007 Corporation Estimated Tax Payment Instructions 120ES Step 10: The last paragraph of the second page contains instructions about rounding the amount owed to the nearest whole dollar.