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A fractional CFO is an experienced chief financial officer who works part-time for several companies at once, usually 4–30 hours a month on a monthly retainer. They own forecasting, cash management, board reporting and fundraising preparation, and they cost a fraction of a full-time CFO's $300,000–$450,000 fully loaded annual cost.
Most companies don't need a full-time CFO until they pass $30M–$50M in revenue or start preparing for an IPO. Before that, the work comes in bursts: a fundraise, a pricing change, a board that suddenly wants a real forecast, an acquirer asking for three years of clean financials.
A fractional CFO covers those bursts and keeps the basics running in between. They sit above your bookkeeper or controller, who closes the books, and turn the numbers into decisions: how much runway you have, which hires you can afford, what to tell investors.
The model is the most established of all fractional roles. It started with accountants serving several small businesses and now includes former public-company CFOs who take two or three clients at a time.
TL;DR
Most companies pay $5,000–$7,500 a month for a fractional CFO, with the full market range running $3,000–$15,000 depending on hours and scope. Hourly rates sit between $175 and $450, and GoFractional's live job-post data puts the average at $177 an hour for about 14 hours a week.
Typical monthly retainer
$5,000–$7,500/mo
Hourly rate in live job posts
$125–$210/hr
Monthly cost in live job posts
$7,000–$11,700/mo
| Pricing model | Typical range | Best for |
|---|---|---|
| Hourly | $175–$450 per hour | One-off projects: a fundraising model, due diligence prep, a pricing analysis |
| Advisory retainer (4–8 hrs/month) | $3,000–$5,000 per month | Monthly financial review, KPI check-ins, a sounding board for big decisions |
| Standard retainer (8–15 hrs/month) | $5,000–$9,000 per month | Owned forecast and budget, monthly reporting pack, leadership meetings |
| Embedded retainer (15–30 hrs/month) | $9,000–$15,000 per month | Active fundraise, board management, weekly cash discipline, team oversight |
| Project fee | $10,000–$50,000+ flat | A defined deliverable such as raise support, M&A diligence or a systems overhaul |
| Full-time CFO | $300,000–$450,000 per year loaded | Post-Series B, IPO track, or finance teams of five or more |
A full-time CFO's base salary typically sits at $250,000–$350,000. Add benefits, payroll tax, bonus and equity and the fully loaded cost lands at $300,000–$450,000 a year, before a recruiter's fee of 20–30% of first-year pay. A fractional CFO at $7,500 a month costs $90,000 a year.
Advisory-only work four hours a month costs a third of an embedded engagement. Be clear about whether you need a reviewer or an owner.
Live deals push engagements to the top of the range. Diligence and investor meetings eat hours fast.
SaaS revenue recognition, inventory-heavy ecommerce, healthcare billing and regulated fintech all cost more than a simple services business.
If your books are a mess, part of the CFO's time goes to cleanup. A good bookkeeper or controller underneath keeps the CFO bill down.
Fractional CFO services usually come in three tiers. The tier you need depends on what's coming up in the next six months, not on company size.
A monthly review of your numbers, a KPI dashboard, and an experienced finance leader on call for pricing, hiring and spending decisions. Typically 4–8 hours a month.
The CFO owns the forecast, the annual budget and the monthly reporting pack. They join leadership meetings and manage your bookkeeper or accounting firm. Typically 8–15 hours a month.
For a live fundraise, an acquisition or a turnaround. Weekly cash meetings, board management, investor calls and diligence. Typically 15–30 hours a month.
The job changes with your stage, but most engagements cover the same core work.
A rolling view of cash in and out, so you know your runway and can see a crunch coming months ahead.
A three-statement model tied to real hiring and revenue plans, used to set the annual budget and test scenarios.
A monthly or quarterly pack with the metrics your board cares about, explained in plain language.
The model, the data room, the use-of-funds story and the finance side of diligence. Many fractional CFOs have raised several rounds themselves.
Gross margin, CAC payback, contribution margin by product or customer. The numbers that tell you what to sell more of.
Approval rules, a clean month-end close, the right accounting stack, and audit readiness when you need it.
These four get mixed up constantly. The difference is how much time you get and whether the person looks forward or backward.
| Option | Time | Focus | Typical cost |
|---|---|---|---|
| Fractional CFO | 4–30 hrs/month, ongoing | Forward-looking: forecast, strategy, fundraising | $3,000–$15,000/mo |
| Interim CFO | Full-time, 3–9 months | Covers a vacant CFO seat during a search or crisis | Priced close to full-time pay |
| Fractional controller | Part-time, ongoing | Backward-looking: close, reconciliations, GAAP | $2,000–$8,000/mo |
| Outsourced accounting | Monthly service | Bookkeeping, payroll, tax filing | $500–$2,500/mo |
Most growing companies end up with a bookkeeper or controller for the close plus a fractional CFO for planning. An interim CFO only makes sense when you've lost a full-time CFO or need someone in the seat every day during a deal.
The trigger is usually an event, not a revenue number. If two or more of these apply, it's time.
When not to hire one: You probably don't need a CFO yet if you're pre-revenue with simple costs and no raise planned. A good bookkeeper and a few hours with an advisor will cover it.
Investors will test your model and your metrics. A CFO who has been through diligence before saves weeks and often improves terms.
If board meetings turn into debates about what the numbers mean, you need someone who owns them.
Missed payroll scares, a tax bill nobody planned for, or a runway estimate that keeps shrinking all point to the same gap.
If the CEO builds the model on Sunday nights, that time has a cost, and the model probably has errors.
Startups are the biggest buyers of fractional CFO services, and the work is different from what a mid-size business needs. It's less about cost control and more about runway, fundraising and building metrics investors trust.
Startup-focused providers price lower, often $3,000–$12,000 a month, because early-stage companies need fewer hours. Expect to pay at the top of that range in the three months around a raise.
A simple model, a runway forecast and a clean cap table. Often a few hours a month is enough.
A real budget, SaaS metrics that survive diligence, and board reporting. This is where most startups first hire fractional.
A finance team to build, audits to prepare for, and a full-time CFO search the fractional CFO often helps run.
An interim CFO fills a vacant full-time seat, usually for three to nine months while you search for a permanent hire or work through a crisis. They work close to full-time, so expect a monthly bill near a full-time CFO's pay rather than a fractional retainer.
A fractional CFO is a long-term, part-time arrangement. If you've never had a CFO and don't need one every day, fractional is the better fit. If your CFO just left in the middle of a raise or an audit, look for interim cover first.
Senior operators who have done this job. Many offer an intro call, so you can check fit before you commit.
Ask about specific outcomes, not credentials. A good candidate will tell you what didn't work as readily as what did.
Which rounds have you raised, at what stage, and what did the investors push back on?
Have you worked with our revenue model before (SaaS, marketplace, ecommerce, services)?
Who closes our books each month, and how will you work with them?
How many clients do you have right now, and how fast do you respond during a deal?
What would you deliver in the first 30 days?
Still have questions? Email our team and we'll help you work out what you need.
Most fractional CFO engagements cost $5,000–$7,500 per month, with the full range running $3,000–$15,000 depending on hours and scope. Hourly rates are typically $175–$450. GoFractional's live data shows an average of $177 an hour for about 14 hours a week, or $7,000–$11,700 a month.
Published 2026 guides cluster at $175–$450 an hour. Marketplace CFOs sit at $125–$225, solo practitioners at $200–$350, and boutique or former investment-banking CFOs at $250–$500.
A fractional CFO works part-time for several companies on an ongoing basis. An interim CFO works close to full-time for one company, usually for three to nine months, to cover a vacant seat or a crisis.
Most startups benefit from one in the six to twelve months before a priced round, when investors start testing the model and metrics. Before that, a bookkeeper and occasional advisory hours are usually enough.
A controller looks backward: they close the books, reconcile accounts and produce accurate financial statements. A CFO looks forward: forecasting, fundraising, pricing and strategy. Most growing companies need both, often both part-time.
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