Coronavirus and Idaho Taxes: Frequently Asked Questions and Answers

Below are answers to frequently asked questions about the coronavirus pandemic and Idaho taxes. If your question isn’t addressed below, please assume business as usual or contact the Tax Commission. This list will be updated as new information becomes available.

  1. Have you extended the deadlines for any taxes due in 2021?

    Yes. The Tax Commission has extended the 2020 Idaho income tax filing and payment deadlines from April 15, 2021, to May 17,2021, to match the extended federal deadline.

    Idaho’s extension applies to all taxpayers subject to Idaho’s individual income tax (i.e., individuals, trusts, and estates), regardless of the amount owed. Penalty and interest won’t apply if taxpayers file their return and pay the income tax they owe by May 17.

    The Tax Commission also extended the deadline to apply for property tax relief programs from April 15 to May 17. The programs include:

    • Property Tax Reduction (circuit breaker)
    • Property Tax Deferral
    • 100% Service-Connected Disabled Veterans Benefit

  2. Is the pandemic delaying income tax refunds?

    At this time, we don’t see any delay in processing refunds. We’ve issued most refunds within the expected timeframes. While many refunds can be processed sooner — especially on e-filed returns — some can take up to 11 weeks, especially if the return is incomplete and we need to contact taxpayers for clarification.

  3. When will I get my stimulus payment?

    The federal government is issuing stimulus payments, not the State of Idaho. The IRS has information on its website about when you’ll get your payment. Visit irs.gov/coronavirus/get-my-payment.

Audits

  1. I’m working with a tax auditor. What’s the best way to stay in touch?

    Please contact the auditor by phone or email.

Payment Plans

  1. I have a payment plan with you. How do I stay in touch?Please email us at paymentplanchange@tax.idaho.gov if you have questions or need to make changes to your plan.

Resources

  • coronavirus.idaho.gov — Get information on the coronavirus in Idaho.
  • irs.gov/coronavirus — Get information on the coronavirus and federal taxes, including the status of your federal stimulus payment.

Form 402

Individual Apportionment for Multistate Businesses

Form ID Form Name Year
402 Current Version 2022
402 2021
402 2020
402 2019

FORM 40EZ, 40, 43, 39R, 39NR, TAX TABLES

Instructions - Individual Income Tax

Form ID Form Name Year
40, 43, 39R, 39NR Current Version 2023
40, 43, 39R, 39NR 2022
40, 43, 39R, 39NR 2021
40, 43, 39R, 39NR 2020
40, 43, 39R, 39NR 2019
40, 43, 39R, 39NR 2018
40, 43, 39R, 39NR 2013
40, 43, 39R, 39NR 2017
40, 43, 39R, 39NR 2016
40, 43, 39R, 39NR 2014
40, 43, 39R, 39NR 2015

Nonprofits and Income Tax

This guide provides some basic Idaho income tax information for nonprofits.

Filing requirements

This page lists our current-year business income tax forms.

You must file Idaho pdf Form 66 if you’re a resident IRA trust or other trust required to report unrelated income.

Exempt from tax

Organizations to which the IRS has granted exempt status also are exempt from Idaho income tax.

Exception: You must file an Idaho income tax return based on your entity type and pay Idaho tax on any unrelated business income your organization reports on federal Form 990-T.

Interest and Penalties

Interest applies to overdue tax from the original due date of the return until you pay the tax. See interest rates for recent years. 

Penalties apply to late returns, late payments, or both. The law determines calculations, and they differ by tax type.

It’s important that you get in touch with us if you’ve forgotten to file for one or more tax periods.

When penalty applies

By law, you’ll owe a penalty if you:

  • Don’t file a tax return on time (5%/month to a maximum of 25%).
  • File a return on or after the original due date and pay tax due after you file (0.5%/month to a maximum of 25%).
  • Don’t have a valid extension and don’t pay tax due by the original due date (2%/month from the original due date to the payment date).
  • Substantially understate tax due (10%).
  • Disregard rules without an intent to defraud (5%).
  • File a false or fraudulent tax return (50%).

The minimum penalty is $10.

Calculating income tax penalty

See how we calculate penalties for income tax, based on the law: pdf How Your Income Tax Penalty Is Calculated.

You can also use the Penalty and Interest Estimator to calculate what you could owe.

Extensions

You might qualify for an extension to file your income tax return without a filing penalty. 

  • Extensions don’t apply to payments — you must pay in full by the original due date to avoid interest and possible penalties.
  • Even with a valid extension, you must pay any tax you owe when you file your return during the extension period, or a penalty applies.
  • The other penalties described above might also apply.

What you don’t know about a “valid extension” for your income tax return can hurt you.  See the Extensions page for more information.

Individual Income Tax Forms Archive

Form 40EZ

Income Tax Return for Single and Joint Filers With No Dependents

Form 40, 43, 39R, 39NR

Instructions - Individual Income Tax

Form 75

Fuels Use Report and Instructions

Form 75-BST

Fuels Tax Refund Worksheet, Idaho Consumers with Single or Multiple Bulk Storage Tanks

Form 75-LFA

Fuels Tax Refund Worksheet, Line Flush Allowance

Form 75-NM

Fuels Tax Refund Worksheet, Nontaxable Miles (Special Fuels Only)

Form 75-PTO

Fuels Tax Refund Worksheet - Power Take-off and Auxiliary Engine

Form 850-U

Self-Assessed Use Tax Return and Instructions

Form ID Form Name Year
850-U 2019

Form 96

Form 96 Annual Information Return

Form ID Form Name Year
96 2023

Form 402

Individual Apportionment for Multistate Businesses

Form ID-VP

Income Tax Voucher Payment

Form ST-102

Use Tax Exemption Certificate, New Resident

Form ID Form Name Year
ST-102 2022

Form TCR

Sales Tax Refund Claim

Form ID Form Name Year
TCR 2023
TCR 2009

Form 51

Estimated Payment of Individual Income Tax

Form ID Form Name Year
51 Current Version 2023
51 2023
51 2022
51 2021
51 2020
51 2019
51 2018
51 2017
51 2016
51 2015
51 2014

Form 43

Part-Year Resident & Nonresident Income Tax Return

Form ID Form Name Year
43 Current Version 2023
43 2023
43 2022
43 2021
43 2020
43 2019
43 2018
43 2017
43 2016
43 2015
43 2014

Form 40

Individual Income Tax Return

Form ID Form Name Year
40 Current Version 2023
40 2023
40 2022
40 2021
40 2020
40 2019
40 2018
40 2017
40 2016
40 2015
40 2014

Instructions – Individual Income Tax 2023