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This article was fact-checked by our editors and reviewed by Jennifer Samuel, senior product specialist for Credit Karma Tax®. It has been updated for the 2019 tax year.
Telling time in Idaho can be confusing, since the top half of the state is in the Pacific time zone and the bottom is on Mountain time.
Wherever you live or work in the state renowned for potatoes, you’ll be dealing with a progressive tax code. But you may be able to qualify for some tax credits and deductions to help reduce your tax bill.
The basics of Idaho state tax
The state of Idaho maintains a website with comprehensive info about personal income tax, including filing and residency requirements, a link to state tax forms and filing information.
The Idaho State Tax Commission is the government agency responsible for collecting individual income taxes. It has offices in the capital — Boise — and throughout Idaho. If you have general tax questions, email the agency at email@example.com or call 1-208-334-7660 in the Boise area, or 1-800-972-7660.
Filing and payment deadline
You’ll need to postmark or e-file your Idaho state tax return by April 15 — or Oct. 15 if you’ve been granted an extension. If the 15th is on a weekend or holiday, the deadline moves to the next business day.
You may be able to qualify for an extension to file, but it won’t extend your deadline to pay any tax due. The state can charge you penalties on late returns and late tax payments, as well as interest on the unpaid balance.
You must choose the same filing status on your Idaho state tax return as you did on your federal tax return: single, married filing jointly, married filing separately, head of household, or qualifying widow or widower.How filing status affects your taxes
Idaho income tax rates
The state’s income tax rates range from 1.125% to 6.925% of your Idaho taxable income. The amount of taxable income and your filing status determine your tax bracket.
Idaho deductions and credits to know
Idaho standard deductions
Your filing status determines the standard deduction you can take from your Idaho state taxable income. For most people, the 2019 Idaho standard deduction amounts are:
- Single or married filing separately — $12,200
- Head of household — $18,350
- Married filing jointly or qualifying widow(er) — $24,400
Idaho tax credits and deductions
Some credits and deductions available for the 2019 tax year include, include:
- Grocery tax credit: You may be able to claim a grocery credit for yourself and your dependents. The credit typically averages $100 per person per year and is intended to offset sales taxes paid on groceries. Idaho residents age 65 or older may also qualify for an additional $20.
- Deduction for contributions to the Idaho college savings program: If you contribute money to an account established with Ascensus College Savings Inc., you may be able to claim a tax deduction, which is capped based on your filing status. For 2019, taxpayers can contribute and deduct up to $6,000 for single filers and up to $12,000 for those married filing a joint return.
- Idaho medical savings account deduction: If you save money for medical expenses and long-term care costs in a qualified Idaho medical savings account — not in a federal MSA or health savings account — you might be able to deduct a certain amount of qualified contributions and interest earned based on your filing status. You can contribute up to $10,000 if you’re single or $20,000 if married filing jointly, and deduct qualified contributions and interest earned on your account.
- Adoption expenses deduction: If you adopt a child, you may be able to deduct qualified expenses of up to $10,000 per child.
- Idaho child tax credit: You may be able to claim a credit of $205 for each child younger than 17 years old as of December 31 of the tax year if the child was living with you for more than half the year.
How to file your Idaho taxes
The Idaho State Tax Commission encourages taxpayers to file returns electronically to save time and postage, but it doesn’t offer a way to e-file through its own site.
You can also use online tax preparation and filing services — like Credit Karma Tax®, which lets you file both your federal and state returns for free, depending on your filing status. Some vendors offer free filing if your income is below a certain limit — but others charge fees, so do your research before signing up. Heads-up: If you e-file your returns, Idaho requires that you use the same service to file both federal and state returns.
If you want to submit tax returns via mail, you can download the state Form 40 individual tax return and any additional tax forms and send them to …
Idaho State Tax Commission
P.O. Box 56
Boise, ID 83756-0056
If you owe and you can’t pay
If you owe state income tax and can’t pay, you may be eligible for a payment plan offered by the Idaho State Tax Commission. Penalties and interest on the unpaid tax balance will continue to accrue while you’re on a payment plan, but the state won’t pursue action like seizure or sale of property to satisfy your tax debt.
To request a payment plan, log in to the state’s Taxpayer Access Point portal and choose “Request a Payment Plan.” You’ll have to make on-time installment payments to stay on a payment plan. Options can include …
- Special six-month payment plan: If your tax debt is paid within six months, no lien will be filed.
- Payment plans lasting six to 18 months: The plans may require automatic withdrawal of payments from your financial institution. You may need to provide information and any updates about your financial situation. The state may require a notice of lien to secure its interest until your final payment is made.
Tracking your Idaho state tax refund
If you’re expecting an income tax refund, you can track it online via the state’s Where’s My Refund portal.
If you e-file, you could get your refund within seven to eight weeks after you receive a filing acknowledgment. Paper filers could receive refunds in about 10 to 11 weeks after the agency receives a return.
With a progressive tax system in Idaho, the more you earn, the more you’ll pay. So be sure to select the right filing status, claim any tax breaks you’re eligible for to reduce what you owe, and make payments on time to avoid penalties and interest. File your Idaho state tax return well before the annual deadline so you can get back to enjoying all the state has to offer.
Jennifer Samuel, senior tax product specialist for Credit Karma Tax®, has more than a decade of experience in the tax preparation industry, including work as a tax analyst and tax preparation professional. She holds a bachelor’s degree in accounting from Saint Leo University. You can find her on LinkedIn.