Sales tax compliance
for San Francisco businesses.
AI-powered nexus monitoring, state and city registrations, monthly returns, marketplace rules, exemption certificates. State, county, city, and special district taxes — collected, filed, and remitted on time, with a real specialist reviewing every filing before it goes out.
If you sell across state lines, you owe sales tax in places you've probably never thought about — and the moment you cross a threshold, you owe it retroactively.
Economic nexus thresholds vary by state. Most are around $100K in sales or 200 transactions. Cross one and you have 30–90 days to register before penalties start. Multiply that by 50 states, throw in marketplace facilitator rules, exemption certificates, and product taxability — and it's a full-time job. Or it's our job.
One state sounds simple.
California has its layers.
California stacks state, county, city, and district rates — and San Francisco, San Mateo, and Alameda all sit at different combined rates. If you sell online into other states, economic nexus rules pull you into theirs too. We track all of it.
Stop guessing. Start filing clean.
The old way
- ✕Deadlines on a sticky note. Miss one and the penalty letter shows up six weeks later.
- ✕Rates looked up by hand. Combined state + local rates change and nobody tells you.
- ✕Nexus ignored. Online sales quietly cross thresholds in other states; you find out via audit notice.
- ✕Filings from messy books. If the underlying numbers are wrong, the filing is wrong.
How San Francisco Bookkeeping Services handles it
- ✓Every deadline monitored. AI tracks each jurisdiction's calendar; nothing slips.
- ✓Rates kept current automatically. State, county, city, and district rates updated as they change.
- ✓Nexus tracked proactively. We monitor your sales by state and flag thresholds before they become liabilities.
- ✓Filings built on clean books. Because we also do the bookkeeping, every filing ties out to reconciled numbers.
Every filing, on schedule.
Your filing calendar, monitored continuously. Each return prepared from reconciled books, reviewed by a specialist, and submitted before the deadline — with confirmations archived automatically.
State, county, city, special district.
Sales tax isn't one-size-fits-all. We track every layer of jurisdiction — including the local taxes most firms miss.
Every state with sales tax has its own thresholds and filing schedules. The starting point for every business selling across state lines.
Many states allow counties to add their own rates on top of the state's. We track which counties apply to your specific sales locations — San Francisco, San Mateo, and Alameda all sit at different rates.
Chicago, Denver, New Orleans, and hundreds more have their own city-level filings — separate returns, separate schedules.
Transit districts, stadium districts, tourism districts — small additions that add up across your jurisdictions if they're missed.
Resale certificates
If you're reselling, we manage the certificates you need to give suppliers to avoid paying sales tax twice.
Exemption certificates
Collected, validated, and stored from your tax-exempt B2B customers — audit-ready the moment a state asks for them.
Full sales-tax compliance.
Eight workflows handled end-to-end. AI handles the monitoring; a sales tax specialist signs off on every filing.
Nexus monitoring
AI tracks your sales by state and city monthly, flagging thresholds before you cross them.
State and city registrations
Cross a threshold? We register on your behalf, usually within a week.
Monthly returns
Filed in every state and city where you owe — on time, every cycle.
Marketplace rules
Amazon, eBay, Etsy, Shopify Markets — we know which states cover what.
Sales tax certificates
Resale and exemption certificates — collected, validated, and stored for audit-ready compliance.
Product taxability mapping
We map your SKUs to per-state and per-city taxability rules.
Voluntary disclosure agreements
Behind? We negotiate VDAs to limit penalties and back-tax.
Audit defense
State sends a notice or audit? We respond and represent.
Common questions.
How do I know if I have nexus in a state?
What about Amazon FBA inventory?
Will I owe back taxes if I haven't been filing?
How much does ongoing compliance cost?
Ready to hand off your sales tax?
Book a 30-minute demo. We'll show you what your current setup is missing and how we close the gap.