Fractional CFO Cost Calculator

How the estimate is built

The calculator converts your stage and scope into a monthly hours range, then prices those hours against four delivery models. Hours are the honest unit here, because every provider is really selling access to a finance executive for some number of hours, and the retainer that looks cheapest is often the one with the smallest allowance.

• Bundled provider, $349 to $799 a month. Bookkeeping, tax and CFO support in one subscription. Our own Foundation plan includes about one hour of CFO support a month and Growth about three, which is the fair-use allowance the price is built on.
• Specialist firm, $1,599 to $5,250+ a month. A dedicated fractional CFO on retainer. Zeni's CFO Lite tier is the cheapest published entry point and Pilot's Custom tier the top of the published range. Bookkeeping and tax are typically separate.
• Independent consultant, $200 to $400 an hour. airCFO publishes about $200 an hour retained and $400 an hour ad hoc. Flexible, and the only model that scales linearly with the hours you actually use.
• Full-time CFO, $18,750 to $31,250 a month. A $180,000 to $300,000 base plus roughly 25% for payroll taxes and benefits, before any equity grant.

What moves the number most

The state of your books, and it is rarely priced into an initial quote. A company that has closed every month for a year is buying forecasting and reporting. A company six months behind is buying cleanup first, which is one-off work that can double the first quarter before any CFO-level work begins. Ask what a provider assumes about your books, and what the price does if the assumption turns out to be wrong.

Questions founders ask

How much does a fractional CFO cost per month?

Published 2026 prices fall into three bands. Bundled providers that include bookkeeping and CFO support run $349 to $799 a month. Specialist fractional CFO firms run $1,599 a month at the entry tier (Zeni CFO Lite) to $5,250 a month and up (Pilot Custom), with bookkeeping and tax usually billed separately. Independent consultants charge roughly $200 an hour retained to $400 an hour ad hoc, so a typical five to ten hour month lands between $1,000 and $4,000. Prices checked September 13, 2026.

What should I actually pay for a fractional CFO?

Work backwards from hours, not from a headline price. A seed-stage company that needs a monthly close and a board pack is realistically a five to ten hour month, which is a $1,600 to $2,500 retainer or a bundled plan if the scope is light. A Series A company running a model, a board pack and fundraise support is fifteen hours or more, which is $3,000 to $5,000. If a quote does not name the hours or the deliverables, it is not comparable to any other quote.

Is a fractional CFO cheaper than a full-time CFO?

Yes, by a wide margin, until you need more than about twenty hours a month. A full-time startup CFO costs $180,000 to $300,000 in base salary, plus roughly 25% in payroll taxes and benefits, plus equity, which is $18,750 to $31,250 a month before the equity. A fractional CFO at $2,500 a month is about 10% of that. The crossover comes when the work becomes continuous rather than periodic.

Why do fractional CFO quotes vary so much for the same company?

Because the state of the books drives the hours and most quotes never mention it. A company that has closed every month for a year needs forecasting and reporting. A company six months behind needs cleanup first, which is one-off work that can double the first quarter's cost before any CFO-level work starts. Ask any provider what they assume about your books and what happens to the price if that assumption is wrong.

What is not included in a fractional CFO retainer?

Usually bookkeeping, tax preparation and audit support, all of which are priced separately by most specialist firms. Published add-ons in 2026 include bookkeeping from $500 to $1,500 a month and tax preparation from $2,400 a year for a C-corp. A retainer that looks cheaper than another is often excluding something the other includes, so compare the total annual cost of books, tax and CFO time rather than the monthly CFO line alone.