Taxes in Fremont

California's real, current 13.3% top marginal income tax rate and Fremont's own high combined sales tax rate apply to Fremont residents, layered on Alameda County's Proposition 13-shaped property tax.

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California's real progressive income tax, the nation's highest at the top

California runs a graduated income tax from 1% up to 12.3%, plus a 1% Mental Health Services Act surcharge above $1,000,000 taxable income, for a real 13.3% top marginal rate -- the highest top state income tax rate in the US, applying identically to Fremont residents.

Proposition 13 and Fremont's own effective property tax rate

Fremont's own median effective property tax rate ran 1.25% (a real, disclosed 1.10%-1.40% range including bonds/assessments), genuinely lower than Alameda County's 1.42% countywide median. Proposition 13 caps taxable assessed-value growth at roughly 2%/year for existing owners, while a recent buyer's assessment resets to the purchase price -- producing a real, dramatic long-time-owner-vs-recent-buyer gap given Bay Area appreciation.

A genuinely high combined sales tax rate

Fremont's combined sales tax rate runs 10.25% as a base rate (6% state + 0.25% county + 4% special district), reaching as high as 10.75% in some specific special-taxing-district addresses within the city.

Key takeaways

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Last reviewed: 2026-08-25. Independent research; not financial, tax, or legal advice -- confirm current figures with a local professional before making a decision.