Security Deposit Interest in San Francisco: 4.2% (2026)
San Francisco requires landlords to pay annual interest on security deposits for rental units covered by the Rent Ordinance — 4.2% for the March … Current rate, payment rules and the official sourc
Quick answer
Yes — San Francisco landlords must pay interest on qualifying security deposits. San Francisco requires landlords to pay annual interest on security deposits for rental units covered by the Rent Ordinance — 4.2% for the March 1, 2026 to February 28, 2027 period, announced by the SF Rent Board.
State statute (official text) · 2026-10-28The current rate in San Francisco
San Francisco's rate is 4.2% for the period March 1, 2026 – February 28, 2027. The rate is announced by the SF Rent Board and changes each March 1. The current 4.2% value was announced by sf.gov (Rent Board report and news announcement of January 9, 2026).
When the rate changes
The San Francisco rate is not written permanently into law — the publishing authority re-announces it periodically, and the number can move up or down with it. When a new value publishes, this page's rate, the worked example below and the verified date all move together. Before relying on a figure from any source — including this one — check the official announcement linked below for the current period.
San Francisco vs California state law
California does not require interest at the state level — the San Francisco rule is what creates the obligation inside the city. The statewide picture: California security deposit interest.
What that looks like in dollars
For a $2,000 deposit held for a full year at the current 4.2% rate, the interest owed works out to $84.00:
| Deposit | Rate | One year's interest |
|---|---|---|
| $2,000 | 4.2% | $84.00 |
| $3,500 | 4.2% | $147.00 |
Partial years are prorated. This example applies the published rate mechanically — the statute and the calculation method section above control in a real dispute.
The source behind it
| Field | Value | | --- | --- | --- | | Rule | San Francisco Rent Ordinance — rate announced by the SF Rent Board | | Official source | www.sf.gov | | Last verified | 2026-10-28 |
- SF.gov Rent Board — Security Deposits (rate 4.2%, eff. 3/1/2026) (official — primary source)
- SF.gov — New Interest Rate for Security Deposits Effective 3/1/26 (announced 1/9/2026) (official — primary source) ⚠️ Which exact unit types fall outside the Rent Ordinance (e.g. certain new construction) — confirm on the Rent Board page before relying on an exclusion.
FAQ
Do landlords in San Francisco have to pay interest on security deposits?
Yes. San Francisco requires landlords to pay annual interest on security deposits for rental units covered by the Rent Ordinance — 4.2% for the March 1, 2026 to February 28, 2027 period, announced by the SF Rent Board.
What is the current security deposit interest rate in San Francisco?
4.2% for the period March 1, 2026 – February 28, 2027. The rate is announced by the SF Rent Board and changes each March 1. The current 4.2% value was announced by sf.gov (Rent Board report and news announcement of January 9, 2026).
Where can I confirm the rate?
The official source linked in the source section below publishes the current value — rates change periodically, so check it before relying on this page.
Independent second source · 2026-10-28Related guides
- All states: security deposit interest by state · rent increase rules by state
- Tools: deposit interest calculator · rent increase calculator
- Statewide rules: California security deposit interest
- Other cities that require interest: Berkeley · Chicago · Los Angeles This page is information, not legal advice — see the full disclaimer.