AI is making raw analysis cheap. It is not making trust, accountability, or tax judgment cheap. Millisecond Finance is where both meet — expert-anchored financial operations running at server speed.
Close cycle
21 days
72 hrsTax exposure lag
11 months
real-timeBoard pack
3 days
automatedEquity event alert
at filing
at grantThe Platform
Traditional finance firms are structured for billable hours. We're structured for outcomes — recurring delivery, automated where possible, human where it matters.
Bookkeeping, forecasting, tax planning, and KPI packs on a monthly subscription. One relationship. One system. No coordination overhead.
Real-time estimated taxes, ongoing withholding optimization, and equity event monitoring. Tax strategy runs year-round, not once a year.
Bay Area equity comp is a full-time specialty. We track your grants, model your AMT exposure, and flag every decision window before it closes.
For startups under ~100 people who need real finance leadership without the full-time headcount. Board packages, KPI automation, budget management.
The Model
We start with a structured diagnostic: compensation structure, equity profile, entity setup, current close process, reporting gaps. Most clients discover material exposure in this step alone.
Typically 90 minutes. Async-friendly.
We instrument your books, connect your equity platform, set up automated reporting, and build the real-time tax position model. You get a single dashboard. No more spreadsheet archaeology.
4–6 week onboarding. Live in under 30 days.
From here, finance runs on a cadence: daily automated sync, monthly close package, quarterly planning, real-time equity monitoring. Human review on every output that matters.
Monthly close, quarterly strategy, always-on alerts.
Design Principles
AI-native workflows
Automation handles data movement, reconciliation, variance flags, and report generation. Human judgment handles strategy, signoff, and advice.
CPA-anchored
Everything is reviewed and owned by a licensed CPA. AI accelerates; credential-holders decide.
Startup-literate
We understand cap tables, equity comp, SAFE notes, 409A, and the pace at which early-stage companies operate.
Async-first
No scheduled check-ins you don't need. Questions answered within one business day. Updates pushed to you, not pulled by you.
“AI is making raw analysis cheaper. It is not making judgment, accountability, or cross-domain synthesis cheaper. That’s the lane we own.”
— The Millisecond Finance thesis
Who it's for
Simple tax situations have simple solutions. We work with people and companies whose financial surface area is genuinely hard — where the stakes of a wrong answer are real.
You're pre-Series B, you've been on QuickBooks and a solo bookkeeper since day one, and your board is starting to ask questions you can't answer without a weekend of spreadsheets. You need a real finance function — not a hire, not a firm, not a tool.
You have a comp package worth more than your parents' neighborhood and a tax situation that a TurboTax product cannot handle. ISOs, RSUs, QSBS, AMT, NQSOs — you need someone who speaks this fluently and is watching it in real time.
Secondary, tender offer, IPO lockup, M&A. These events compress a decade of tax planning into a 90-day window. Getting this wrong is permanent. Getting it right requires someone who has seen it before.
You've grown past the point where your accountant can keep up but you're not ready for a full-time CFO. You need the thinking without the headcount — and you need it to actually run, not just advise.
Domain depth
Climate & Clean Energy
Healthcare & Life Sciences
Infrastructure & Real Assets
B2B SaaS
Advanced Manufacturing
Consumer Tech
Early access
We're onboarding a small cohort of founders and Bay Area tech workers. Request early access and we'll be in touch within two business days.
No spam. No pitch decks. Just a conversation about whether this is a fit.