Tax Bracket Calculator · Idaho

Idaho Tax Brackets 2026

Your income faces two sets of brackets: the 2026 federal brackets and Idaho's flat 5.30% rate. This page shows both, plus your real combined rate.

Data verified November 10, 2026 against official sources (see below).

Filing Status

Annual Gross Income

Federal tax

$7,670

22.0% marginal · 10.2% effective

Idaho tax

$3,201

5.3% marginal · 4.3% effective

Combined

$10,871

14.5% of gross income

Your income through the Idaho 2026 brackets
Idaho rate	Income in bracket	Tax in bracket
5.3%	$60,400	$3,201

Federal and Idaho tax at common incomes

Single filer, 2026 standard deduction, no credits. Your combined marginal rate is the federal bracket plus the Idaho bracket on the same dollar.

Federal and Idaho income tax by income, single filer, 2026
Gross income	Federal tax	Idaho tax	Combined	Effective rate
$40,000	$2,620	$1,346	$3,966	9.9%
$60,000	$5,020	$2,406	$7,426	12.4%
$75,000	$7,670	$3,201	$10,871	14.5%
$100,000	$13,170	$4,526	$17,696	17.7%
$150,000	$24,734	$7,176	$31,910	21.3%
$200,000	$36,734	$9,826	$46,560	23.3%

Idaho 2026 brackets (single filer)

Idaho charges one flat rate of 5.30% on taxable income after the $14,600 state standard deduction.

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Sources and how we calculate

Published by Financial Calculator. Editorial policy. Publisher attribution, not a claim of professional review.

Idaho brackets and standard deduction come from the Idaho revenue department's published 2026 figures (rolling verification recorded in our data files). City and county income taxes are not included.

Figures last checked on November 10, 2026. Read our calculation methodology for data sources and update schedule.

How We Calculate & Keep This Accurate

We subtract the 2026 standard deduction from gross income, walk the federal brackets, then apply the Idahostate standard deduction and flat rate to the same income. The combined marginal rate adds both top rates because both taxes hit the same dollar. Credits, pre-tax deductions, and local taxes are not included; the paycheck calculator models those.

Published by Financial Calculator. Editorial policy. No named professional review is implied.

Primary Sources

Data & Freshness

Figures reflect 2026 tax-year data.

Last updated November 10, 2026 · Maintained by the Financial Calculator editorial team.

Read our calculation methodology.

Idaho tax bracket FAQs

Common questions about Idaho and federal income tax brackets in 2026.

What is the Idaho income tax rate in 2026?

Idaho has a flat 5.30% state income tax rate in 2026, on top of the federal brackets.

How much tax do I pay on $75,000 in Idaho?

A single filer earning $75,000 in Idaho pays about $7,670 in federal income tax and $3,201 in Idaho tax — $10,871 combined, an effective rate of 14.5% (standard deduction, no credits).

What is the difference between marginal and effective tax rate?

Your marginal rate is the rate on your last dollar of income; your effective rate is the average across every dollar. Only income inside a bracket is taxed at that bracket's rate, so moving into a higher bracket never makes your whole income get taxed harder.

Does Idaho have local or city income taxes?

This page shows the Idaho state income tax only. Some cities and counties charge their own income taxes; check our city tax pages or your local revenue department.