Idaho Tax on Capital Gains

Idaho taxes capital gains as ordinary income, with a top individual income tax rate of 5.3%.

Unlike the federal system, Idaho does not have a separate capital gains tax rate.

Instead, capital gains are included in your overall taxable income and taxed at the same rate as wages or business income.

However, Idaho offers a valuable benefit for certain taxpayers: a 60% capital gains deduction for qualifying Idaho-based property, which can significantly reduce state taxes when the rules are met.

How Capital Gains Work in Idaho

A capital gain is the profit from selling an asset for more than you paid for it. Idaho generally follows federal rules to determine the amount of the gain, including adjustments for cost basis and selling expenses.

Common taxable assets include:

• Real estate
• Business property and equipment
• Stocks, bonds, and mutual funds
• Partnership or LLC interests

Only the profit portion of the sale is taxed.

Key Features of Idaho Capital Gains Tax

🔹 Tax Rate

• Capital gains are taxed as ordinary income.
• The maximum rate is 5.3% (reduced from 5.69% in 2024).
• There is no separate long-term capital gains rate.

🔹 60% Capital Gains Deduction (Qualified Property Only)

Idaho allows a 60% deduction for gains from the sale of qualified Idaho property, including:

• Idaho real property
• Tangible personal property used in an Idaho trade or business
• Certain livestock and agricultural assets
• Timber (with a longer holding requirement)

Holding period requirements:

• More than 12 months for most qualifying properties
• At least 24 months for timber

This deduction can dramatically lower your Idaho taxable income, but it applies only to qualifying assets.

🔹 Assets That Do NOT Qualify

The 60% deduction does not apply to:

• Stocks, bonds, ETFs, and mutual funds
• Other intangible property
• Assets held for one year or less

These gains are fully taxable at Idaho’s ordinary income tax rate.

🔹 Short-Term vs. Long-Term Gains

Short-term gains (held one year or less):

• Fully taxable
• No 60% deduction

Long-term gains (held longer than one year):

• Eligible for the deduction only if the asset qualifies under Idaho law

🔹 Capital Loss Carryovers

• Prior-year capital loss carryovers must be used to offset current-year capital gains.
• This applies before calculating any eligible capital gains deduction.

Practical Usage Examples

🏡 Example 1: Sale of Qualified Idaho Property

A taxpayer sells Idaho real estate held for two years and realizes a $100,000 gain.

• 60% deduction: $60,000
• Idaho taxable gain: $40,000
• State tax owed (at 5.3%): $2,120

📈 Example 2: Sale of Stocks (Non-Qualified Asset)

An Idaho resident sells Apple stock for a $50,000 gain.

• Asset type: Intangible property
• 60% deduction: ❌ Not allowed
• Idaho taxable gain: $50,000
• Taxed fully at ordinary income tax rates

🏢 Example 3: Pass-Through Entity Sale

A partnership sells qualified Idaho business property.

• The 60% deduction flows through to individual partners
• Each partner reports their share of the reduced gain on their Idaho return

Filing Tips to Avoid Mistakes

✔ Confirm whether the asset qualifies for the 60% deduction

✔ Verify holding period requirements (12 vs. 24 months)

✔ Apply loss carryovers before calculating deductions

✔ Keep documentation showing the property was used in an Idaho business

✔ Ensure state and federal capital gains figures match

Why Electronic Filing Is Recommended

Idaho taxpayers reporting capital gains—especially those claiming the 60% deduction are strongly encouraged to file electronically:

• Automatic calculations reduce deduction errors
• Faster processing and confirmation
• Better accuracy when importing federal Schedule D data
• Easier reporting of pass-through income and deductions
• Reduced audit risk due to math or classification mistakes

Most tax software correctly applies Idaho’s unique capital gains rules when your federal return is completed first.

Bottom Line

Idaho taxes capital gains as ordinary income at rates up to 5.3%, but offers a powerful 60% deduction for gains from qualifying Idaho-based property held long enough.

Investment assets like stocks and bonds do not qualify, making correct classification critical. Because these rules are asset-specific and detail-driven, electronic filing is the safest and most accurate way to report Idaho capital gains.