2026 Idaho Income Tax Brackets & Rates
Federal and state tax brackets, capital gains rates, and corporate tax rates for Idaho in tax year 2026.
Federal Income Tax Brackets (2026)
| From | To | Rate |
|---|---|---|
| $0 | $12,400 | 10.00% |
| $12,400 | $50,400 | 12.00% |
| $50,400 | $105,700 | 22.00% |
| $105,700 | $201,775 | 24.00% |
| $201,775 | $256,225 | 32.00% |
| $256,225 | $640,600 | 35.00% |
| $640,600 | ∞ | 37.00% |
Idaho State Income Tax Brackets (2026)
| From | To | Rate |
|---|---|---|
| $0 | $4,811 | 0.00% |
| $4,811 | ∞ | 5.30% |
Federal Capital Gains Tax Brackets (2026)
| From | To | Rate |
|---|---|---|
| $0 | $49,450 | 0.00% |
| $49,450 | $545,500 | 15.00% |
| $545,500 | ∞ | 20.00% |
Additional Information
- Federal Corporate Tax Rate
- 21.00%
- State Corporate Tax Rate
- 5.30%
- Federal Standard Deduction (Single)
- $16,100
Sources & Trust
Every figure above is traceable to a published source. Each source is rated by what published it, not by how confident we feel about it.
Federal (United States) — 2026
OfficialValues verified- Rate bracketsTier 1 · Primary authority
- Standard deductionTier 1 · Primary authority
- Capital gainsTier 1 · Primary authority
- Corporate rateTier 1 · Primary authority
3 sources— show— hide
Cited for Rate brackets, Standard deduction, Capital gains, Corporate rate · confirmed
Section 4.14(1) table, page 18 of the PDF
- Irs Releases Tax Inflation Adjustments For Tax Year 2026 Including…irs.govTier 1 · Primary authority
Cited for Rate brackets, Standard deduction · confirmed
Press release states $16,100 directly
Cited for Corporate rate · confirmed
Official U.S. Code text: flat 21% corporate rate under §11(b)
How we rate sources — tiers are derived from what published the document, not from our confidence in it.
Idaho — 2026
ProvisionalValues verified2026 state values currently carry forward 2025 structures/rates unless separately updated.
- Rate bracketsTier 1 · Primary authority
- Standard deductionTier 1 · Primary authority
- Capital gainsTier 2 · Official restatement
- Corporate rateTier 2 · Official restatement
4 sources— show— hide
Cited for Rate brackets · confirmed
Official page, fetched 2026-07-19: 'the webpage only provides 2025 tax year information; no 2026 tax year schedule is currently published.'
- Update On Filing 2025 Idaho Income Taxes Now That Conformity Is Lawtax.idaho.govTier 1 · Primary authority
Cited for Standard deduction · confirmed
Official Idaho State Tax Commission press release confirming HB559 conforms Idaho to OBBBA's federal standard deduction provisions.
Cited for Capital gains, Corporate rate · confirmed
63-3025 sets 5.3% with no expiration date; no CPI/inflation-adjustment clause exists for the corporate rate section (unlike 63-3024(3) for individuals).
Cited for Rate brackets, Standard deduction · confirmed
Aggregator corroboration only: Tax Foundation's 2026 state tax data still lists Idaho's threshold as $4,811 (i.e., the 2025 number), consistent with the state not yet having published an updated TY2026 figure.
How we rate sources — tiers are derived from what published the document, not from our confidence in it.