CFO

The CFO (Chief Financial Officer) is the senior finance executive responsible for financial planning, capital raising support, financial controls, tax strategy, and treasury management. Capital raising support spans financial models, investor reporting, and board materials. Financial controls cover GAAP financials, audit preparation, and internal controls. At growth-stage and later companies the role also owns investor relations and strategic finance decisions including M&A evaluation. The CFO is typically hired between Series A and Series C as financial complexity outgrows the CEO's bandwidth and ability to manage finance through bookkeepers and fractional resources. It is a role that often arrives later in a company's life than founders initially expect because the early-stage need for full-time finance leadership is genuinely limited.

The CFO responsibility set evolves across stages:

Pre-CFO era (typical: pre-Series A):

• CEO manages finance personally with help from a bookkeeper or fractional CFO.
• Financial reporting is basic (cash position, monthly burn, runway).
• No audit, no GAAP financials, minimal financial planning.
• Banks and investors accept this minimal structure at small scale.

First CFO hire (typical: Series A-B, $5-15M ARR):

• Build FP&A: monthly close, financial reporting, budget vs actuals, board materials.
• Manage capital raising: build financial models, investor materials, due-diligence responses.
• Establish financial controls: separate AR/AP, expense approvals, audit-ready financials.
• Lead the financial side of major decisions: pricing, hiring plans, vendor contracts.

Growth-stage CFO (Series C+):

• Full GAAP financials and annual audit.
• Lead investor relations beyond founder-led fundraising.
• Tax strategy at scale (state tax compliance, international expansion, R&D credits, QSBS).
• M&A evaluation and execution support.
• Pre-IPO preparation: SOX readiness, audit committee, financial public-company readiness.

Public-company CFO:

• All of the above plus SEC reporting (10-Q, 10-K, 8-K), investor day, earnings calls, sell-side analyst coverage.
• Significantly more compliance overhead and stakeholder management.

When founders hire a CFO: the typical trigger is some combination of (a) fundraising complexity exceeding what the founder can handle (e.g., raising Series B requires deeper financial modeling than founder can produce); (b) financial reporting needs growing beyond bookkeeper capability (need for monthly close, board financials, real FP&A); (c) board pressure to professionalize finance (which becomes acute as later-stage investors join); (d) pre-IPO preparation requiring public-company-readiness expertise. Many founders try to do without a CFO too long; many hire one too early. The right timing varies by complexity, not just by stage.

Founder-CFO vs hired CFO: very few founders are CFOs because finance backgrounds are less common in founding teams than technology and product backgrounds. CFOs are almost always hired rather than founders. The hired CFO is often a meaningful cultural adjustment for the team because finance brings rigor and process that early-stage founders may resist.

What founders get wrong: Delaying the CFO hire because "we have a bookkeeper" or "I can manage finance myself." Bookkeepers and fractional CFOs work fine through seed and early-Series-A but typically break around Series B. The right discipline: hire your first full-time finance leader (whether titled CFO or VP Finance, depending on experience level) when board materials become a recurring time sink, fundraising materials need real FP&A support, or financial decisions are getting made without proper analysis. Hire ahead of need; the cost is moderate and the benefit is significant.

Related: CEO · Controller · VP Finance · Financial Projections · Board of Directors

FAQ

What does a CFO do?
The senior finance executive responsible for financial planning and analysis (FP&A), capital raising support, financial controls and reporting, tax strategy, treasury management, and increasingly at growth-stage and later companies investor relations and strategic finance decisions including M&A evaluation.

When should a startup hire its first CFO?
Typically between Series A and Series C, depending on complexity. The triggers: fundraising complexity exceeding what the founder can handle, financial reporting needs growing beyond bookkeeper capability, board pressure to professionalize finance, or pre-IPO preparation requirements. Hire ahead of desperate need; the good ones pay for themselves in better decisions and faster fundraises.

Is the CFO the same as the Controller or VP Finance?
No, though the roles can overlap. CFO is the senior finance executive with strategic responsibilities (planning, capital raising, investor relations). Controller manages accounting operations (closing the books, financial reporting, accounting policy). VP Finance is often a step below CFO and may not have the strategic scope. Smaller companies may have a Controller but not a CFO; larger companies typically have both.