Idaho has a state income tax, and it applies to most residents and workers
Yes, Idaho charges a state income tax on wages, self-employment income, interest, dividends, and other earnings. The tax rate depends on your total income for the year and ranges from 1% to 5.8%, with higher earners paying the higher percentage. Unlike some states that tax only certain types of income, Idaho taxes most forms of earnings the same way.
If you work in Idaho or live there, you will owe state income tax on money you earn during the year. Your employer typically withholds the tax from your paycheck, or you may need to pay it yourself if you are self-employed. The amount withheld depends on what you claim on your W-4 form and your actual tax bracket.
Key Takeaways
- Idaho's income tax rate ranges from 1% to 5.8% depending on your income level, with the rate increasing as you earn more.
- The state taxes wages, self-employment income, interest, dividends, and capital gains using the same tax brackets.
- If you work in Idaho, your employer will withhold state income tax from your paycheck unless you claim an exemption.
- Idaho also allows a standard deduction that reduces the income amount subject to tax, similar to the federal deduction.
How Idaho's tax brackets work
Idaho uses a progressive tax system, meaning the rate you pay increases as your income rises. You do not pay 5.8% on all your income — instead, different portions of your earnings are taxed at different rates. For example, the first portion of your income is taxed at 1%, then the next portion at a higher rate, and so on.
The exact dollar amounts where the rate changes shift each year based on inflation. For the 2024 tax year, a single filer pays 1% on the first portion of income, then 3%, 4.5%, and finally 5.8% on the highest bracket. A married couple filing jointly has higher income thresholds before moving to each bracket, so they may pay less overall tax on the same total household income.
Idaho also allows you to subtract a standard deduction from your income before calculating tax. This deduction reduces the amount of income that is actually taxed. The standard deduction amount depends on your filing status and age, and it changes yearly.
What types of income are taxed in Idaho
Idaho taxes most forms of income the same way. This includes wages from a job, self-employment income from a business or freelance work, interest earned on savings accounts or bonds, and dividends from stocks or mutual funds. Capital gains — the profit you make when you sell an investment at a higher price than you paid — are also taxed as income in Idaho.
Some income is not taxed by Idaho. Social Security benefits are generally not taxed, and certain retirement distributions may be excluded under specific conditions. Military retirement pay and some pension income also receive preferential treatment. If you receive income from sources outside Idaho, you may still owe Idaho tax on it if you are a resident.
How withholding works if you are employed
When you start a job in Idaho, you fill out a W-4 form that tells your employer how much state income tax to withhold from each paycheck. The amount withheld is based on your filing status, the number of dependents you claim, and any additional withholding you request. Your employer sends this withheld money to the Idaho State Tax Commission on your behalf.
If you do not have enough tax withheld during the year, you will owe money when you file your tax return. If too much is withheld, you will receive a refund. You can adjust your withholding at any time by submitting a new W-4 form to your employer, which is useful if your income changes or your personal situation shifts.
Self-employment and estimated tax payments
If you are self-employed or have income that is not subject to withholding, you may need to make estimated tax payments to Idaho four times per year. These payments cover both federal and state income tax on your business income. You calculate the estimated amount based on what you expect to earn for the year.
Estimated payments are due on April 15, June 15, September 15, and January 15 of the following year. If you do not make these payments and owe a large amount at tax time, you may face a penalty. Many self-employed people work with a tax professional to determine the correct estimated payment amount.
Filing your Idaho tax return
Most Idaho residents file their state income tax return at the same time they file their federal return, typically by April 15. You can file electronically through the Idaho State Tax Commission website or by mail using paper forms. If you need more time, you can request an extension, though any tax owed is still due by April 15 even if your return is not filed yet.
Your return shows all income you earned during the year, the deductions and credits you are may have access to to, and the tax you owe or the refund you should receive. If your employer withheld too much, that overpayment becomes your refund. If not enough was withheld, you pay the difference when you file.
Tax credits and deductions available in Idaho
Idaho offers several tax credits that reduce the amount of tax you owe. These include credits for dependent children, education expenses, and retirement savings. Some credits are refundable, meaning you can receive money back even if you owe no tax, while others only reduce your tax bill to zero.
Deductions lower the amount of income that is taxed. The standard deduction is the simplest option for most people, but you can also itemize deductions if you have significant expenses like mortgage interest or charitable donations. Idaho generally follows federal rules for what can be deducted, though some state-specific deductions exist.
Frequently Asked Questions
Do I owe Idaho income tax if I work in Idaho but live in another state?
Yes, you owe Idaho income tax on wages earned in the state, even if you live elsewhere. However, you may also owe tax to your home state. Many states have reciprocal agreements to prevent double taxation, so check with both states' tax agencies about how to handle this situation.
What happens if I do not file an Idaho tax return?
If you owe tax and do not file, the Idaho State Tax Commission can assess penalties and interest on the unpaid amount. They may also file a return on your behalf based on information from employers or other sources. Filing, even if you owe money, is usually better than ignoring the requirement.
Can I claim dependents on my Idaho return?
Yes, you can claim dependents on your Idaho return if they meet the state's requirements, which generally match federal rules. Each dependent you claim reduces your taxable income and may make you may be able to access for additional credits.
Is retirement income taxed differently in Idaho?
Some retirement income receives special treatment. Military retirement pay is partially excluded, and certain pension income may may have access to for an exclusion if you meet age and income requirements. Social Security is generally not taxed. Check the current rules with the Idaho State Tax Commission or a tax professional for your specific situation.