Idaho Income Tax Rate
5.30% flat rate
Everyone pays 5.30% of taxable income, regardless of income level or filing status.
What People Get Wrong
“A flat tax means I pay 5.3% of my whole salary in Idaho.”
Idaho's 5.3% applies only to income above the standard deduction ($16,100 single, $32,200 married). A $75,000 earner pays $3,122, an effective rate of 4.2%. The rate is the same for everyone, but the share of salary it takes rises with income.
“Idaho has low taxes because it's a low-population state.”
Idaho's flat 5.3% rate is the highest of any flat-tax state, above Pennsylvania (3.07%), Indiana (2.95%), and North Carolina (3.99%). A $75,000 earner pays $3,122 in Idaho, while the same earner in a flat-tax state like Pennsylvania would pay $2,303 (3.07% flat, though PA may have local EIT).
“No local taxes means Idaho is cheaper than other states.”
While Idaho avoids local income tax complications, the flat 5.3% income tax rate combined with sales taxes (6%) and property taxes can create a tax burden. A high earner in Idaho pays 5.3% on income above the standard deduction, while a high earner in a flat-tax state like Pennsylvania pays 3.07% flat (though PA may have local EIT). Factor in all taxes when comparing Idaho to other states.
Key Facts That Affect Your Take-Home Pay
- Idaho taxes income at a single flat 5.3% rate after the standard deduction ($16,100 for single filers, $32,200 for married couples filing jointly), so every taxable dollar is taxed at the same rate whether you earn $30,000 or $300,000.
- Because Idaho's 5.3% applies only after the standard deduction, effective rates rise gently with income: a $30,000 earner pays $737 (2.5% of salary), a $75,000 earner pays $3,122 (4.2%), and a $150,000 earner pays $7,097 (4.7%).
- Idaho does not collect income taxes from local governments, so your income tax structure doesn't vary by location. All Idaho residents face the same flat 5.3% state rate.
