Fortress Accounting (Interim CFOs LLC)

About Us

Fortress Accounting is an accounting and advisory firm providing outsourced accounting, fractional CFO services, controllership, and tax filing for VC-backed and bootstrapped startups and growing businesses. Founded in 2020, we specialize in SaaS, Web3/crypto, AI startups, e-commerce brands, healthtech, biotech, property management, professional services, and fashion, alongside general small business accounting.

Our clients range from early-stage startups to established companies navigating industry-specific compliance and financial requirements, including money transmitter licensing and multi-state regulatory reporting. We serve a growing client base concentrated in San Francisco, New York, Denver, Austin, and Miami.

Fortress acts as a true financial partner, building the accounting infrastructure, controls, and reporting founders need to raise capital, pass audits, and scale with confidence.