Fractional CFO
Greywood CPA provides part-time CFO leadership for startups and SaaS companies that need more than a bookkeeper but aren't ready for a full-time CFO. We build the model, run the budget, prepare board reporting and support fundraising, at a fixed monthly fee.
Most startups bring in a fractional CFO around a fundraise, when the board starts asking for metrics, or when cash runway gets tight. We work alongside your bookkeeper or our accounting team, so the numbers behind the model are reliable.
Last reviewed: November 2026
A driver-based model that ties hiring, pricing and growth assumptions to cash, updated monthly against actuals. Runway is the number that matters most, and we tell you early when it's shrinking and what levers move it.
| Metric | What it shows |
|---|---|
| ARR and net new ARR | Recurring revenue growth |
| Net revenue retention | Expansion vs. churn in existing customers |
| Gross margin | Hosting and support efficiency |
| CAC payback | How fast sales spend pays back |
| Burn multiple | Cash burned per dollar of new ARR |
We define each metric once and calculate it the same way every month, so trends are real.
We build the model and metrics investors diligence, prepare the data room, answer finance questions during diligence and model dilution across SAFEs, notes and the new round.
If an investor or lender will require an audit, we get your revenue schedules, cap table and equity accounting ready first. For companies we audit, CFO work is done by a separate team so the audit stays independent.
Stage, runway, board and fundraising plans.
Monthly scope and fee.
Model, metrics definitions and first board package.
Close review, model update, reporting and strategic support.
Usually around a fundraise, when the board asks for consistent metrics and reporting, when runway gets tight, or before a first audit.
At minimum ARR, net revenue retention, gross margin, CAC payback and burn multiple, each defined once and calculated consistently every month.
Yes: the model and metrics investors diligence, the data room, diligence questions and dilution modeling across SAFEs, notes and the new round.
Yes, or an accounting team. The CFO relies on accurate monthly books. We can provide the accounting too, through a separate team.
A fixed monthly fee based on stage, reporting cadence and how much fundraising or board support you need.
Tell us your stage. A senior CPA will send a fixed-fee proposal within 1–3 business days.