ZIP 94121 sales tax rate: 8.625%
Verified against state tableSan Francisco, CA — San Francisco County
Quick answer
Purchases delivered to ZIP 94121 are taxed at 8.625%, the combined California state, county, city and district rate for San Francisco as of January 1, 2026. A $100 taxable purchase costs $108.63 — $8.63 of tax. California allows local add-ons, so a neighbouring ZIP can differ.
Calculate tax for 94121
Pre-loaded with the 8.625% rate for 94121.
Sales tax calculator
The full combined rate of 8.625% applies to general merchandise.
Enter a pre-tax amount to see the tax due in ZIP 94121 — San Francisco, CA.
- Pre-tax
- $100
- Sales tax at 8.625%
- $8.63
- Total
- $108.63
Tax is rounded to the nearest cent on the full transaction, which is how most registers compute it. Line-item rounding can differ by a cent or two on long receipts.
Reverse out sales tax
Split a receipt total into item price and the 8.625% tax collected.
Backing out 8.625% for ZIP 94121.
- Item price before tax
- $100
- Sales tax collected
- $8.63
How the 8.625% breaks down
Every jurisdiction that takes a share of this rate.
| Jurisdiction | Level | Rate | Share of total |
|---|---|---|---|
| California state (incl. mandatory local) | state | 7.25% | 84% |
| San Francisco County transportation and homelessness districts | special district | 1.375% | 16% |
| Combined rate | 8.625% |
Tax table for 94121
Common purchase amounts at this rate.
| Purchase | Sales tax | Total |
|---|---|---|
| $10 | $0.86 | $10.86 |
| $25 | $2.16 | $27.16 |
| $50 | $4.31 | $54.31 |
| $100 | $8.63 | $108.63 |
| $500 | $43.13 | $543.13 |
| $1,000 | $86.25 | $1086.25 |
| $5,000 | $431.25 | $5431.25 |
| $25,000 | $2156.25 | $27156.25 |
About ZIP 94121
ZIP boundaries are postal routes, not tax boundaries.
San Francisco is a consolidated city and county, so there is no separate county layer — every local add-on is a voter-approved district tax. For destination-based sourcing, California sellers should confirm the rate by full street address rather than ZIP alone — a single ZIP can cross a city limit or a transit-district boundary, and the rate follows the boundary, not the mail route.
Other ZIP codes in San Francisco
All carry the 8.625% San Francisco rate.
Compare with nearby ZIP codes
Nearest covered ZIP codes in other metros.
Go deeper
Download this metro's data
The San Francisco jurisdiction stack, combined rate (8.625%), effective date and Census figures are published as open files. Free to use with attribution — no key, no signup.