Taxes in Nampa
Idaho's real, current flat 5.3% state income tax and flat 6% sales tax apply to Nampa residents statewide, layered with a genuinely low, though methodology-dependent, Canyon County property tax rate.
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Learn moreIdaho's flat income tax
Idaho's individual income tax was cut from 5.695% to 5.3% via House Bill 40, signed by Governor Brad Little in March 2025 -- a real, current, statewide rate applying identically to Nampa residents as any other Idaho resident.
Nampa's genuinely low property tax rate, with a real, disclosed spread
Nampa's own median effective property tax rate ran 0.40% per Ownwell's analysis, close to Canyon County's broader 0.39% median -- though a separate assessment-year figure cited Canyon County overall as high as 0.88%, a real, disclosed methodology gap worth confirming for a specific parcel.
Idaho's flat sales tax, no local add-on
Idaho levies a flat 6% statewide sales tax; Canyon County imposes no local-option add-on, unlike Idaho's voter-approved resort cities elsewhere in the state.
Key takeaways
- Idaho's flat 5.3% income tax (cut from 5.695% via House Bill 40) applies statewide.
- Nampa's property tax rate runs genuinely low (0.40% Nampa-specific, up to 0.88% on a separate Canyon County assessment-year figure).
- Idaho's flat 6% sales tax applies with no Canyon County local-option add-on.
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