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Companies You’ve Heard of Started Here

Apartment List logo with the text 'Apartment List' in black, accompanied by a geometric house-shaped icon featuring purple and black accents on the right
Replit logo featuring three orange squares next to the word 'Replit' in bold black font
Coffee Meets Bagel logo featuring an interlocking 'CMB' symbol in blue followed by the company name in blue font
ScootScience logo featuring a stylized 'S' made of stacked gradient blue bars next to the company name in dark blue sans-serif font
Logo featuring a minimalist black geometric design next to text in a clean, modern black font
Swift Navigation logo featuring an abstract orange and red bird design next to the company name in dark gray font
Branch logo featuring a minimalist tree design enclosed in a circle above the word 'BRANCH' in uppercase gray font
The Numbers Speak for Themselves

Trusted by Startups Since 2013

$

25

B

In total funding raised by airCFO clients

500

+

Client startups served

70

+

VC firm partnerships

You Shouldn't Have to Choose Between Great People and Great Systems

airCFO is both: experienced people on AI systems we built ourselves.

Everything to Service Your Back Office Needs

  • Monthly close
  • AP/AR
  • Reconciliations
  • Revenue recognition
  • KPI and board reporting
  • Budget versus actuals
  • Runway and burn
  • Fundraise preparation
  • Federal and state filings
  • R&D credits
  • Multi-state registration
  • Credentialed sign-off
  • Payroll
  • Benefits
  • Onboarding
  • Multi-state compliance
  • airCFO Differences Powering Every Service Line

    why aircfo
    BACK-OFFICE FLIGHTPLAN

    Built for Your Stage. Ready for Your Next One.

    Most finance teams are built reactively, hired when things break, patched when audits loom. airCFO's Flightplan framework is your guide for building a back office that evolves as you raise. Click your stage to explore what's waiting for you.

    🌿
    PRE-SEED
    Launchpad

    Accounting, banking, and compliance, handled from day one.

    Get Your Flightplan →
    🚀
    SEED
    Launch

    The financial systems you need before your Series A.

    Get Your Flightplan →
    ⚡
    SERIES A
    Iterate

    Finance, tax, and people ops working together as things get complex.

    Get Your Flightplan →
    ⛰️
    SERIES B+
    Scale

    Reporting and strategy built for the board.

    Get Your Flightplan →
    What Our Clients Have to Say
    "We recommend airCFO! If you're an early-stage startup, this is a group that can work with you to help you grow just like we have. From myself being the only employee to growing to a team of 16+, and we work with some of the biggest producers in the world."
    Jon Lariviere
    Founder and CEO, Scoot Science
    Read the Success Story
    “Without airCFO, we would have had a lot of difficulties in scaling up as our business became more complex. airCFO was able to grow alongside us and deliver on its value proposition consistently.”
    John Kobs
    CEO and Co-Founder, Apartment List
    Read the Success Story
    “At the beginning of a startup and for a very long time, if there's a lot of work but not enough to hire a full-time finance person, it usually falls on the CEO to do that work. By using a fractional finance service, specifically airCFO, I was able to free a lot of mental space to go focus on growing the team and product.”
    Bebe Kim
    CEO and Co-Founder, Basis
    Read the Success Story
    “After the shift to airCFO, our process became much more robust and organized. Financial reporting was produced more timely, and the level of detail and analysis went up significantly.”
    Matthew Bujnicki
    VP, Finance & Operations, WorkRamp
    Read the Success Story
    “Our accounts receivable needs have grown in complexity, and airCFO stepped in without hesitation to take ownership of that work. Since then, it has been running very smoothly, and I’m very thankful for their support.”
    Kathleen Hammill
    Chief of Staff, Desmos
    Read the Success Story
    “airCFO is extremely flexible, responsive, and knowledgeable about accounting and finance, allowing us to scale easily without a large internal team."
    Quincy Yang
    CFO, Coffee Meets Bagel
    Read the Success Story

    The AI CFO Newsletter

    Every two weeks, airCFO’s CEO Alex Wittenberg covers the tools, trends, and real-world lessons shaping startup finance and operations in the age of AI.

    The full issue includes:

  • The articles and resources shaping the conversation right now
  • A spotlight on tools worth knowing about
  • What we're seeing across the startups we work with at airCFO
  • The future of finance is AI-powered.

    Thank you! Your submission has been received!
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    airCFO runs your back office across four service lines: accounting, finance, tax, and people ops. An experienced team, supercharged by AI systems we built ourselves.

    No. Most clients start with accounting and add lines as the company grows, so you pay for what you need now rather than what you might need later.

    Pricing is set by the service lines you turn on and your stage, starting at $500 per month for pre-seed accounting, with onboarding as a separate flat fee. See pricing.

    You get a named controller and senior accountant who own your account, plus a specialist for every service line you turn on. Any question gets an answer inside one business day.

    airCFO supports almost all of the common back-office systems across general ledger, banking, revenue and expense management, payroll and benefits, and cap table management, including QuickBooks Online, Rillet, Campfire, Mercury, Ramp, Brex, Stripe, Gusto, Rippling, Carta, and others. airCFO designs and implements the stack, and it belongs to you and stays with you. If you have specific questions, let us know.

    airCFO builds and runs its own AI systems, proven on its own books before running on anyone else's. Our people make the judgment calls; the AI handles the busy work.

    We call that graduation, and it’s our goal to get you there. airCFO hands off working systems and the architecture behind them, so your new team inherits a functioning back office instead of a rebuild.

    Yes, as long as a local accountant in-country owns that entity's books. airCFO covers your US operations and runs the consolidation.

    We can usually begin onboarding within a few days of a signed engagement letter. Onboarding is a flat-fee engagement with a defined scope designed to get your back-office operations set up for ongoing service. More complex implementations, such as an HRIS or PEO migration, may be scoped separately.

    Yes. Federal and state filings, R&D credits, multi-state registration, and credentialed sign-off are all inside the tax service line.

    Ready to Level-Up Your Startup’s Financial Operations?

    Partner with us to simplify your back-office and focus on what matters most: growing your business.

    Schedule a Discovery Call