Local Taxes & Fees in Ada County, ID (2026)
1 rule for unincorporated Ada County, Idaho.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Ada County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Business Tax Classification
Ada County Code 1-13-3 sets the minimum investment a business must make to qualify for the county's property tax exemption on new plant investment at three million dollars. Set under Idaho Code 63-602NN(2)(g), the threshold applies countywide to project sites and does not by itself guarantee an exemption.
Ada County Business Tax Exemption Investment Floor
Some RestrictionsAda County Code 1-13-3
MINIMUM INVESTMENT AMOUNT NECESSARY TO QUALIFY FOR THE BUSINESS TAX EXEMPTION: A. Per Idaho Code section 63-602NN(2)(g), the minimum investment amount for plant investment at project sites within Ada County, Idaho is set at a minimum threshold of three million dollars ($3,000,000.00); and B. Those seeking a Property Tax exemption under Idaho Code section 63-602NN must still meet the other requi...
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