Gilroy tax rates cover several separate taxes with their own rules: a combined sales tax of 9.125%, a base property tax of 1% of assessed value plus voter-approved bond debt, a 5% utility user tax on most home utilities, a 9% transient occupancy tax on short lodging stays (with a 2% tourism assessment on top), and an annual business license tax that varies by business type and gross receipts.
Sales and Use Tax: 9.125%
Inside Gilroy’s city limits, the total sales and use tax rate is 9.125%.1California Department of Tax and Fee Administration. California City and County Sales and Use Tax Rates2California Department of Tax and Fee Administration. California City and County Sales and Use Tax Rate Information3VTA. About 2016 Measure B Retailers collect it at the register.
Buy a taxable item from an out-of-state seller who doesn’t charge California tax, and you owe the equivalent use tax yourself at the same 9.125% rate.
Property Tax: 1% Base Plus Bond Debt
Gilroy property owners pay 1% of assessed value as the base property tax. That ceiling comes from Proposition 13, which also caps annual increases in assessed value at 2% unless the property changes hands or sees new construction. Either event prompts the county assessor to revalue the property at current market price.4California State Board of Equalization. California Property Tax An Overview
Your actual tax bill runs higher than 1% because voter-approved bond debt for school districts, community college districts, and other local agencies rides on top.5Office of the Assessor, County of Santa Clara. Understanding Proposition 13 The exact add-on depends on which districts cover your parcel.
Proposition 19 Changes
Two Prop 19 rules took effect in 2021 and reshape how assessed values move.
Homeowners aged 55 or older, those with severe disabilities, and disaster victims can carry their existing assessed value to a replacement home anywhere in California, up to three times. If the replacement home costs more than the original, the difference in market value gets added to the transferred assessed value.
Inherited properties lost their blanket exclusion from reassessment. A child who inherits a parent’s home only keeps the parent’s low assessed value by using the property as a primary residence, and only if the current market value doesn’t exceed the existing assessed value by more than $1,044,586 (the adjusted limit through February 2027). Inherited properties used as rentals or second homes get fully reassessed at market value.6California State Board of Equalization. Proposition 19
Payment Deadlines and Late Penalties
Santa Clara County collects secured property tax in two installments. The first is due November 1 and goes delinquent after December 10. The second is due February 1 and goes delinquent after April 10. A deadline falling on a weekend or county holiday rolls to the next business day.7Santa Clara County Department of Tax and Collections. Obtain Secured Property Tax Information Paying by eCheck online is free. Credit and debit card payments add a 2.22% processing fee, and a returned payment of any type costs $85 on top of whatever delinquency penalties apply.
Supplemental Bills After a Purchase
Buying a home or finishing new construction triggers a supplemental property tax bill separate from the annual one. The assessor takes the new market value, subtracts the old assessed value, and prorates the difference from the first of the month after the ownership change through June 30, the end of the fiscal year.8California State Board of Equalization. Supplemental Assessment A purchase between January and May produces two supplemental bills: one for the rest of the current fiscal year and one for the full year that follows. They arrive on their own schedule, and new owners who aren’t watching for them miss the deadline.
Mello-Roos and Special Assessments
Many newer Gilroy neighborhoods sit inside Community Facilities Districts, usually called Mello-Roos districts. These districts sell bonds to pay for infrastructure like roads, sewers, and fire protection, then levy a special tax on every parcel in the district to repay them.9City of Gilroy. Community Facilities District The charge is usually calculated from square footage or lot size instead of market value, so it doesn’t fall when the housing market does.
A special tax lien attaches to each parcel. Falling behind triggers the same collection path as delinquent property tax, including eventual foreclosure. Your annual bill will also include fixed charges for services like vector control and library districts; the detailed breakdown on the statement is the only place to see exactly what each line funds.
On your federal return, most Mello-Roos special taxes and assessments that pay for new infrastructure are not deductible as property taxes. The IRS treats assessments for local benefits that increase property value, like new streets or sewer systems, as additions to your cost basis. The portion of an assessment specifically earmarked for maintenance, repair, or interest can be deducted if you can document the amount.10Internal Revenue Service. 2025 Publication 530
Utility User Tax: 5%
Gilroy charges a 5% utility user tax on electricity, natural gas, telephone service, video service, and steam or hot water delivered through pipes. It applies to anyone using these services inside city limits, and the utility collects it directly on your monthly bill. It’s easy to miss because it rolls into the total, but every utility bill in Gilroy costs 5% more than the base charges.
Hotel Tax: 9% TOT Plus 2% Tourism Assessment
Guests staying in a Gilroy hotel, motel, or similar lodging for 30 consecutive calendar days or fewer pay a 9% Transient Occupancy Tax on the rent. The tax lives in Chapter 25A of the Gilroy City Code. The guest owes it, the operator collects it, and the operator remits it to the city quarterly, by the last day of the month after each calendar quarter. The city’s finance director can require shorter reporting periods for some operators.11City of Gilroy. Gilroy City Code Chapter 25A – Transient Occupancy Tax
Late remittance adds 10% of the unpaid tax. Another 30 days without payment stacks a second 10% penalty on top. Fraud brings a 25% penalty. Unpaid balances also carry 18% annual interest, calculated monthly.
A separate 2% Tourism Business Improvement District assessment applies to gross room rental revenue on stays of 30 days or fewer. Operators collect it alongside the TOT on the same quarterly return.12City of Gilroy. Transient Occupancy Tax and TBID The TBID is not folded into the base used to calculate the 9% TOT, and the TOT is not folded into the base used to calculate the TBID.
Business License Tax
Anyone conducting business within Gilroy’s city limits needs a city business license, whether or not the business is physically located in Gilroy. The requirement reaches home-based businesses, independent contractors, and out-of-city contractors working on projects inside city boundaries.13City of Gilroy. Business Licenses The tax amount depends on business classification and annual gross receipts, and the license year runs on the calendar from January 1 through December 31.14City of Gilroy. Gilroy City Code Chapter 13 – Licenses The city sets specific schedules by resolution, with different structures for gross-receipts businesses, enumerated categories, and transient operations.
Operating without a license counts as a separate violation for every day it continues, so fines accumulate quickly. Getting the license in place before work starts is far cheaper than resolving it afterward.
Short-Term Rental Owners: Local and Federal Overlap
Rent a Gilroy property on a platform like Airbnb and you face two layers of rules.
Locally, any rental of 30 days or fewer owes the 9% TOT and the 2% TBID assessment, the same as a hotel stay. You register with the city as the operator and remit quarterly.
Federally, the IRS allows a narrow exclusion: if you use the home as a personal residence and rent it for fewer than 15 days in the year, you don’t report the rental income and can’t deduct rental expenses.15Internal Revenue Service. Renting Residential and Vacation Property Cross 14 days and all rental income becomes reportable under the mixed-use property rules, which split deductions between personal and rental use. Gilroy’s TOT obligation doesn’t track that federal threshold, so even a single weekend rental means you owe the city 9%.