Idaho Tax Forms 2018
Printable State Idaho Form 40 and Form 40 Instructions

2018 Idaho Form 40 and Instructions
Free printable 2018 Idaho Form 40 and 2018 Idaho Form 40 Instructions booklet in PDF format to print, prepare, and mail your 2019 Idaho state income tax return.

Printable Idaho (ID) state income tax Form 40 must be postmarked by April 15, 2019 in order to avoid penalties and late fees. Printable Idaho state tax forms for the current tax year will be based on income earned between January 1, 2018 through December 31, 2018. The Idaho income tax rate for 2018 is graduated from a low of 1.125% to a high of 6.925%. The Idaho tax table can be found inside the 2018 Idaho Form 40 Instructions booklet below.

Preparation of your Idaho income tax forms begins with the completion of your federal income tax forms. Some of the Idaho state income tax forms require information from your federal income tax return, for example. If you have not done so already, please begin with your federal 1040 using the links above or on the left side navigation. Remember that federal tax forms 1040EZ and 1040A have been discontinued for the 2018 - 2019 filing season.

2018 Idaho Form 40 and Form 40 Instructions

Form 40
Form 40 Instructions

Frequently required Idaho tax forms, instructions, schedules, worksheets, and tables.

Form 24 - Idaho Grocery Credit Refund
Form 39R - Idaho Supplemental Schedule For Residents
Form 39NR - Idaho Schedule For Part-Year & Nonresidents
Form 43 Idaho Part-Year & Nonresident Return
Form 51 - 2018 and 2019 Idaho Estimated Tax Payment
Form CG - Idaho Capital Gains Deduction
Form ID-40V - Idaho Income Tax Payment Voucher

List of all printable ID state income tax forms.

Click any Idaho state income tax form title above to download, view, print, and save the PDF file. The PDF file format allows you to safely print, prepare, and mail in your 2018 Idaho state tax forms.

The Idaho State Tax Commission will expect your 2018 income tax forms to be printed on high quality printers. Today's laser, bubble-jet, or ink-jet printers are generally acceptable. Color printing is not required, however, we recommend that you read the first few pages of the Idaho Form 40 instructions booklet for updates regarding the printing of your 2018 Idaho state tax forms.

Idaho State Income Tax Refund Status

To check the status of your 2018 Idaho Form 40 income tax refund online, visit the Idaho State Tax Commission website and use their Where's My Refund service. Idaho State Tax Commission states on their website that electronically filed refunds process in about 7 weeks. Mailed in paper refunds can take up to 10 weeks to complete processing.

To check the status of your Idaho income tax refund for 2018 you will need the following information:

  • Social Security Number or ITIN
  • Refund Amount

The requested information must match what was submitted on your 2018 Idaho Form 40 state income tax forms for the current year. To look up prior year refunds, you will need to contact the Idaho State Tax Commission service center by phone, email, or mail.

To contact the Idaho State Tax Commission service center by phone or email, use the check your refund status link above. Alternatively, view or print the 2018 Idaho Form 40 instructions to obtain the proper phone number and mailing address.

Last updated: April 6, 2019