Do startups pay San Francisco city tax? Under $5M in SF revenue, the answer is basically no, and here is exactly what you still have to file.
Founders hear "San Francisco business taxes" and picture some brutal city-level levy stacked on top of everything else. The reality in 2026 is the opposite: if your startup books less than $5 million in San Francisco gross receipts, you owe the city $0 in gross receipts tax, you do not even file the tax return, and your first-year registration and permit fees have likely been waived. SF quietly became one of the cheapest big cities in America to start a company in. Here is the whole picture, and the two things you still cannot skip.
Do startups actually pay SF city tax?
Most startups pay San Francisco nothing in gross receipts tax: Proposition M raised the small business exemption to $5 million in SF gross receipts, and companies under that line do not owe the tax or file the return. That covers almost every pre-seed, seed, and Series A company, and plenty of Series B companies whose revenue is spread across many states.
Note the wording: $5 million in San Francisco gross receipts, not total revenue. If you are doing $8 million ARR but only a slice of it is apportioned to SF under the city's sourcing rules, you may still be under the threshold. (Once you are anywhere near the line, this stops being a blog-post question and becomes an accountant question.)
What you cannot skip: registering your business with the city. Registration is mandatory for anyone engaging in business in San Francisco, even if you owe zero tax. It is a separate obligation from the tax itself, and blowing it off is the one way early startups actually get penalized here.
So the founder version of SF tax compliance at $0 to $5M revenue is one item long: register with the Treasurer and Tax Collector, renew annually, done.
What Prop M changed
Proposition M, passed by SF voters in November 2024 and effective for tax year 2025 (so the first filings hit in 2026), is the biggest overhaul of San Francisco's business tax in a decade, and it moved almost entirely in startups' favor. The headline changes:
- The small business exemption jumped from $2.25M to $5M in SF gross receipts. Same threshold applies to the Overpaid Executive Tax. Under $5M, no gross receipts tax return at all.
- Business activity categories were cut from 14 to 7, so when you eventually do file, classifying a software company is far less painful.
- Apportionment shifted toward sales-based sourcing. This is irrelevant while you are exempt, but once you cross $5M it generally helps companies with SF headquarters and customers everywhere else, because tax follows where your sales go rather than where your engineers sit.
- Roughly $10 million a year in city license fees were eliminated starting in 2026 under companion legislation.
- Registration renewal and the tax return merged into one filing. More on the deadline below.
The political story is simple: post-2020, SF's tax base was dangerously concentrated in a few large companies, and the city decided that being hostile to small businesses was a bad trade. Prop M is the correction, and startups are the direct beneficiaries.
One tax to keep on your radar for later: the Homelessness Gross Receipts Tax kicks in above $25 million in SF gross receipts. At that point you have a finance team and this is their problem, not yours.
The $5M exemption in practice
If your SF gross receipts are $5 million or less, you owe no gross receipts tax and no Overpaid Executive Tax, and starting with the 2025 tax year you do not file those returns. There is no application and no approval process. You simply fall under the threshold and the filing obligation for those taxes disappears.
What "gross receipts" means here trips people up twice:
1. It is revenue, not profit. A $6M-revenue, money-losing startup can owe this tax. A profitable $2M consultancy cannot. Plan around top line, not burn.
2. Fundraising is not revenue. Money raised on SAFEs or priced rounds is capital, not gross receipts. Raising a $10M Series A does not push you over the exemption. Your $5M clock runs on actual SF-apportioned sales. (If you are mid-raise and thinking about timelines anyway, see our fundraising guide.)
The practical consequence: for nearly every reader of this site, SF's famous "gross receipts tax" is a tax you will not pay for years. When comparing SF to Austin or Miami on cost, the honest 2026 comparison is rent, not city taxes.
You still have to register with the city
Every business operating in San Francisco must hold a Business Registration Certificate from the Treasurer and Tax Collector, including startups that owe zero tax, including a solo founder working from an apartment. Register at sftreasurer.org shortly after you start doing business in the city (do not wait for revenue; "engaging in business" is the trigger, not making money).
The registration fee scales with your SF gross receipts. For a pre-revenue or early-revenue startup you are in the lowest tiers, which run on the order of one to a few hundred dollars a year; the schedule climbs steeply only for companies doing serious volume. It is the cheapest line item in your compliance stack and the dumbest one to miss, because operating unregistered stacks penalties and can block permits and city contracts later.
If you are doing your Delaware incorporation and state registrations in the same week, fold this into that checklist. Our legal setup guide covers the full sequence (Delaware C-corp, EIN, California foreign qualification, then city registration), and it belongs in your first 30 days alongside the bank account and the lease.
First Year Free: fee waivers for new businesses
San Francisco's First Year Free program waives initial business registration fees, initial license fees, and first-year permit fees for eligible new businesses, and its most recent confirmed extension ran through June 30, 2027. Eligibility: $5 million or less in SF gross receipts and a registered commercial location. Home-based businesses and short-term rentals do not qualify, so a founder working from their apartment misses out, but the moment you sign an office or dedicated desk arrangement that gives you a commercial address, you are in scope.
The honest status check as of July 2026: the June 30, 2026 sunset date just passed. This program has been extended repeatedly since it launched in 2021 (Mayor Lurie signed the most recent extension, the Board of Supervisors approved it unanimously, and nearly 11,000 businesses have enrolled, saving roughly $6 million in fees), and the Treasurer's office notes the Board of Supervisors is now considering legislation to extend it through June 30, 2027, or until the appropriated reimbursement funds are spent, whichever comes first. Another extension is plausible but not guaranteed, so before you count on the waiver, check the current status at sftreasurer.org/business/first-year-free. If you registered while the program was active and paid fees anyway, the Treasurer has a retroactive eligibility form; it takes minutes and is free money. Speaking of which, if you like non-dilutive discounts, our equity-free money guide lists the bigger ones.
Even if the program lapses, the underlying point stands: with the $10M annual license-fee elimination baked into Prop M's companion legislation, the recurring fee load on a small SF business in 2026 is a fraction of what it was in 2019.
The one deadline that matters
San Francisco business taxes now run through a single combined filing: the Annual Business Registration and Tax Form, which merges registration renewal with the tax return, due at the end of February each year. The first combined filing under Prop M rules was due March 2, 2026 (February 28 fell on a Saturday). Expect the same rhythm every year: last day of February, rolling to the next business day when it lands on a weekend.
For an exempt startup, this filing is short. You are confirming your information and paying the registration renewal, not computing gross receipts tax. Put a recurring reminder in mid-February and treat it like Delaware franchise tax: trivial when done on time, annoying and penalty-laden when forgotten. Extensions to file (to November 30) exist, but payment is still due by the original end-of-February deadline, so extensions rarely help a small company.
If you are in an accelerator, your batch ops team will nag you about Delaware and the IRS but often not about city registration, because batches are full of founders who have not picked a city yet. Once you have signed an SF lease, this is on you. (Just got into an accelerator? Start here.)
What you still owe: the Delaware and California stack
SF letting you off the hook does not mean zero tax anywhere; the standard Delaware C-corp in San Francisco still owes Delaware franchise tax every year and California's $800 minimum franchise tax from its second taxable year. The full stack for a typical startup:
- Delaware franchise tax: due March 1 annually. Use the assumed par value capital method, not the authorized shares method, when you file; for a standard startup cap table it usually lands near the $400 minimum for that method instead of a five-figure number the default calculation scares you with.
- California minimum franchise tax: $800 per year once you are qualified to do business in California. Newly formed or newly registered corporations are exempt for their first taxable year; the tax kicks in from year two. (New LLCs no longer get the first-year break, one more reason startups are C-corps.)
- California income/franchise tax on profits: 8.84% of net income, which is academic while you are unprofitable, as most of you will be for a while.
- Payroll taxes: federal and California employer payroll taxes the moment you run payroll. Your payroll provider handles the mechanics.
- San Francisco: the registration renewal described above, and nothing else until $5M in SF gross receipts.
Total city-plus-state fixed cost for a first-year SF startup: roughly $400 to Delaware, $0 to California (first-year exemption), and possibly $0 to San Francisco if First Year Free applies. Call it under $500 in mandatory government fees to run a venture-backed company in the most expensive city in America. The rent is the tax here.
When you cross $5M in SF receipts
At $5,000,001 in San Francisco gross receipts, you file the gross receipts tax return and start paying, and the smart move is to hire a CPA about six months before you get there. Three things change at once:
- You file the full Annual Business Tax return, not just the registration renewal.
- Your business activity classification (one of the 7 post-Prop M categories) and the sales-based apportionment rules start determining real dollars. For a software company selling nationally from an SF HQ, sales-based sourcing usually keeps the SF-taxable share of revenue well below 100%, which is exactly why Prop M made this shift.
- Estimated quarterly payments enter your life.
The rates themselves scale with receipts and category, starting under 1% of SF-apportioned receipts for most startup-relevant activities. Meaningful money at scale, but nothing like the payroll-tax horror stories from the pre-2014 regime that still circulate in old Hacker News threads.
Until then, your entire SF tax strategy fits on an index card: register, renew every February, claim First Year Free if it is alive and you qualify, and get back to building.
Numbers verified July 2026. SF business tax rules, fee schedules, and the First Year Free program change fast, so confirm current figures at sftreasurer.org before relying on them.
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This guide was researched and written with AI assistance for justmovetosf.com, with every number checked against the sources below in July 2026. Things change fast and mistakes are possible: do your own research, and for visa, tax, or legal decisions talk to a licensed professional.
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