The sales tax rate in Half Moon Bay is 9.875% as of January 1, 2026, following voter approval of a new half-cent city tax in November 2024.1California Department of Tax and Fee Administration. California City and County Sales and Use Tax Rates That rate applies to most retail purchases of physical goods inside city limits, and it combines state, county, district, and city taxes into a single figure on your receipt.
How the 9.875% Rate Breaks Down
California’s statewide base rate is 7.25%, and every city in the state starts there.2California Department of Tax and Fee Administration. California City and County Sales and Use Tax Rate Information San Mateo County adds 2.125% in district taxes for transportation, transit, and other county programs, pushing the countywide floor to 9.375%.
The final 0.50% is Half Moon Bay’s own transactions and use tax, authorized by Measure R in November 2024.3City of Half Moon Bay. Half Moon Bay Municipal Code – Chapter 3.10 Transactions and Use Tax Measure R was a general tax, so the roughly $2 million per year it is projected to raise flows into the city’s general fund rather than any single earmarked purpose.4City of Half Moon Bay. Measure R – City of Half Moon Bay Sales Tax Measure
Because the city portion is structured as a transactions and use tax under Part 1.6 of the California Revenue and Taxation Code, the same rate applies whether you buy an item from a shop on Main Street or have it shipped to a Half Moon Bay address from elsewhere in California.
What You Actually Pay Tax On
Most retail sales of tangible goods carry the full 9.875%. California carves out meaningful exemptions, though, and they cover categories people spend money on every week.
Food and Groceries
Food purchased for home consumption is generally exempt. Produce, dairy, bread, canned goods, and most grocery-aisle items go untaxed.5California Department of Tax and Fee Administration. Common Sales and Use Tax Nontaxable Sales and Partial Exemptions The exemption disappears when food is sold hot, served as a meal, or eaten on the seller’s premises. Hot prepared meals from a restaurant or deli counter are taxable, and so are carbonated beverages like soda.6California Department of Tax and Fee Administration. Mobile Food Vendors Tax Guide
Prescription Medicine
Prescription medications are exempt. Certain medical devices and appliances are also exempt when furnished under conditions set out in state regulations, including items like insulin, hemodialysis products, and prostheses sold on a physician’s order.7California Department of Tax and Fee Administration. Regulation 1591 – Medicines and Medical Devices Over-the-counter drugs that don’t require a prescription are taxable.
Labor and Services
Pure labor and standalone services generally aren’t taxed. A plumber billing only for time spent fixing a pipe doesn’t charge sales tax on that labor. Fabrication labor is different: when someone creates, processes, or assembles something for you, that labor is taxable whether billed separately or bundled into the product price.8California Department of Tax and Fee Administration. Taxable Labor Repairs split the difference. Tax applies to the parts and materials, but not to the repair labor itself.9California Department of Tax and Fee Administration. Labor Charges
Online and Out-of-State Purchases
If you buy something online or from an out-of-state retailer and the seller doesn’t collect California sales tax, you owe use tax at the same 9.875% rate.10California Department of Tax and Fee Administration. California Use Tax Use tax exists so residents can’t dodge the local rate by shopping across state lines.
Most individuals report and pay use tax on their California income tax return. If you don’t have receipts, the CDTFA publishes a lookup table that estimates what you owe based on adjusted gross income. Someone earning between $50,000 and $59,999 owes an estimated $5, while someone earning over $199,999 multiplies their income by 0.009%.11California Department of Tax and Fee Administration. California Use Tax Table The table only covers personal items under $1,000 each. Anything costing $1,000 or more, and anything bought for business use, has to be calculated at actual cost.
If You’re a Business Collecting the Tax
Any business selling physical goods at retail in Half Moon Bay needs a seller’s permit from the CDTFA. The permit itself is free.12California Department of Tax and Fee Administration. Obtaining a Seller’s Permit When you register, the CDTFA uses your estimated taxable sales to assign a filing frequency: monthly, quarterly, quarterly with prepayment, or yearly.13California Department of Tax and Fee Administration. Filing Dates for Sales and Use Tax Returns Businesses with an average monthly tax liability of $17,000 or more move to a prepayment schedule, sending estimated payments during the quarter on top of the quarterly return.14California Department of Tax and Fee Administration. Sales and Use Tax Law – Section 6471
Returns are filed through the CDTFA’s online portal. A late return or late payment each carries a 10% penalty on the tax owed, with the combined penalty capped at 10% for a single reporting period, and interest starts accruing immediately on any unpaid balance.15California Department of Tax and Fee Administration. Interest, Penalties, and Collection Cost Recovery Fee Once your average monthly tax liability reaches $10,000 or more over a 12-month period, the CDTFA requires payment by Electronic Funds Transfer, and paying by credit card after that triggers an additional penalty.16California Department of Tax and Fee Administration. Electronic Funds Transfer – Frequently Asked Questions
California also requires sellers to keep records sufficient to determine the correct tax liability for at least four years, including invoices, receipts, register tapes, and the working papers behind your returns.17California Department of Tax and Fee Administration. Regulation 1698 Point-of-sale systems that overwrite data before that window closes are a common pitfall, so export and preserve transaction-level detail before it gets wiped.