Make your check payable to "Idaho State Tax Commission and mail your Idaho state tax payment to:
Idaho State Tax Commission
PO Box 83784
Boise ID 83707-3784
Be sure to include the Form ID-40V payment voucher. The voucher should be included with your printed tax return. Here is a link to the Idaho.gov website where you can print the voucher from the website https://tax.idaho.gov/forms/EFO00090_04-26-2016.pdf.
As an alternative, you can also pay the taxes online by visiting the following website https://tax.idaho.gov/i-1042.cfm.