How Much Does a Fractional CFO Cost for a $10M–$50M Ecommerce Brand?

By Sam Hill, Founder & CEO, Ecom CFO · Updated October 2026

A fractional CFO for a $10M to $50M ecommerce brand costs $5,000 to $10,000 a month at Ecom CFO. With the accounting team included, $7,500 to $15,000. Across the market, CFO retainers for brands this size run $3,500 to $10,000, and a full-time CFO is $200,000 to $300,000 a year before you add the people under them.

That’s the answer. The rest of this page is why the range is that wide, how I actually build a fee, and how to tell whether a cheaper quote is really cheaper.

What we charge, and how I get to the number

I’ve had dozens of founders ask me some version of the same question this year: “You’re significantly higher than the other quote. Are you just better? Do you have better people?”

Usually I’m not fully transparent about pricing. I’m learning it helps. So here is exactly how it works.

Every engagement has four roles on it: a bookkeeper, a controller, a CFO and a financial analyst. Before we quote, we assess your accounting system, usually QuickBooks, sometimes NetSuite or Fulfil, to figure out how many hours a month the work actually needs across those four people.

Then the math is simple. Total monthly hours, split across the roles. What I actually pay each of those people, divided by 2,080 hours, which is their real hourly cost. Margin on top. That’s the fee. There’s nothing else in it.

What drives the hours is structural complexity, not revenue. Not how many SKUs you have. How many channels, how many entities, how messy the inventory accounting is, and whether a lender or an investor is waiting on reports.

Two shapes come out of that. Most clients take the whole function, CFO and analyst over controller and bookkeeper, so the fee is the entire cost of finance and accounting. Brands that want to keep their own accounting team take a CFO-only engagement, which can start in about two weeks.

Billing starts at kickoff, not at signature. If prior periods need clean-up, we scope and price that up front, and it’s usually done in 45 to 60 days.

Fixed monthly retainers agreed before work starts. Clean-up of prior periods is the one separately scoped project. Brands under $10M or over $50M, and multi-entity groups, are quoted the same way.

What everyone else charges, and the 15-hour problem

Across the firms we compete with, CFO retainers for $10M to $50M brands run roughly $3,500 to $10,000 a month. The published pricing guides quote higher, $8,000 to $12,000, and hourly ecommerce CFOs bill $175 to $325 an hour. Most firms don’t publish a CFO price at all and quote after a call.

Here is the test I’d run on any quote, including ours.

A founder came to me this spring with a $4,500 all-in quote from another provider: bookkeeping, controller, CFO, AP and AR. Be as generous as possible and assume every dollar of that goes to one CFO. A competent ecommerce CFO retails between $200 and $300 an hour. $4,500 divided by $300 is 15 hours a month. Total.

Do you think they’re closing the books in 10 hours or less? And the weekly meeting with your CFO is already 4 hours of the month before any prep or follow-up.

So one of these is true. Somebody is working hours they didn’t charge for. A junior person is sitting in a senior seat. The scope is thinner than it reads. Or the price goes up in month seven.

On the full-time side, salary guides put a CFO at a company under $100M at $225,000 to $375,000 base and up to $500,000 in target cash. For a $10M to $50M ecommerce brand the realistic all-in number is lower, $200,000 to $300,000 with bonus and benefits, depending on where they sit and how the comp is structured. Either way it’s one person. The controller and accountants under them are extra.

The market retainer range, the bookkeeper range and the full-time figure are what I see across clients and prospects. Published figures are from the Eightx fractional CFO pricing guide (2026), the ECOM CPA pricing page and the JRG Partners CFO Salary Guide 2026.

What moves the price

• Channels and marketplaces. Every channel adds settlement reconciliation, fee mapping and another revenue line to forecast. Shopify plus Amazon plus wholesale is a lot more work than Shopify alone at the same revenue.
• Entities and currencies. A second operating entity or a non-US subsidiary adds a close, intercompany work and consolidation.
• Inventory complexity. SKU count matters less than people think. 3PL count, landed cost tracking and inventory financing matter a lot.
• Transaction volume and payables. Order volume drives reconciliation hours. Vendor count drives AP hours.
• Lenders, investors and a board. Covenant reporting, investor updates and board decks are recurring CFO time.
• The state of the books. Clean-up of prior periods is scoped and priced separately before the monthly fee starts.

Revenue is the weakest predictor on that list. It’s why we quote from scope after a discovery call instead of from a revenue bracket.

Still weighing a full-time hire or a solo fractional CFO against a team? I laid the four options side by side on cost, ecommerce depth, coverage and what happens when the person leaves.

What’s in the fee

Not included: tax preparation and filing, sales tax compliance, and audit opinions. We work with your tax preparer and auditor and hand them clean books.

One more thing on scope, because it’s where the surprise invoices live. A founder once read me her old scope document out loud: bookkeeping, monthly close, cash flow forecast, monthly reporting, marketing efficiency analysis. Her supply chain team had just found $50,000 in 3PL overcharges, and she read that as her finance firm not caring. Nowhere in the scope did it say audit my 3PL. A price only means something next to a scope. Get the “what’s included” and the “what’s a scope conversation” in writing, from us or anyone else.

What the first 90 days look like

The fee buys a sequence, not just hours. Exact dates get locked at signing and we start with your number-one priority, but the shape is the same for almost everyone.

Billing starts at kickoff, not signature. Messy books are scoped up front and typically cleaned up in 45 to 60 days. From you: system access in week one and about 4 to 6 hours of team time.

When it pays for itself

For most clients, hiring us means spending more on finance than they did before, and they want to know how they’ll see the return. Fair question. Here is where it shows up.

Accountability. Nobody holds a founder to the plan. Advisors don’t. Mastermind groups don’t. The numbers will, if someone puts a budget with ROAS, contribution margin and EBITDA targets in front of you every month.

Speed. We see the books of dozens of $1M to $100M+ brands. Most situations you’re facing, we’ve already worked through with someone else, which means you skip the research.

Direct savings. Expenses that should be cut, supplier terms that should be renegotiated, and the lender terms you get when your financials are investor-ready. One client has a $10M+ line of credit on the back of books that pass annual audits.

Exit value. Clean financials shorten diligence and defend valuation when you raise or sell.

The gut check I give founders: if one point of contribution margin, or one avoided inventory over-buy, is worth more than a year of fees, this pays for itself. On a $20M brand, one point of contribution margin is $200,000. A year of the full finance function is $90,000 to $180,000.

When I’d tell you not to hire us

• If you’re in the first few million dollars of revenue, a good ecommerce bookkeeper and a periodic advisory call is usually enough. If a clean monthly close and a review call are all you need, buy that. It’s a real product and it’s usually cheap.
• If the books aren’t on accrual with accurate COGS, fix that first. A CFO forecasting from wrong margins is expensive guesswork. We do both, but the accounting comes first.
• If you’re heading past $100M or finance has to coordinate several departments daily, a full-time CFO is the better structure. We help clients make that hire and often stay on for accounting.

Frequently asked questions

How much does a fractional CFO cost for a $10M to $50M ecommerce brand?

At Ecom CFO, $5,000 to $10,000 a month for a fractional CFO, or $7,500 to $15,000 with the accounting team, depending on scope. Across the market, CFO retainers for this size run $3,500 to $10,000 a month. A full-time CFO is $200,000 to $300,000 a year all-in.

What does a fractional CFO for an ecommerce company do?

Forecasts cash 13 weeks out, builds and tracks the budget, models inventory buys, hiring and ad spend, reports to lenders and investors, and benchmarks your margins against peer brands. At Ecom CFO the CFO also directs the team that closes the books.

Is a fractional CFO worth it for a $10M ecommerce brand?

Usually, if the books are already on accrual. One point of contribution margin on $10M is $100,000 a year, about a year of fees, and most engagements find more than that in expense, supplier or inventory decisions in the first quarter.

Fractional CFO vs full-time CFO: what’s the real cost difference?

A full-time CFO for a $10M to $50M ecommerce brand is $200,000 to $300,000 a year all-in, plus the controller and accountants under them. A fractional CFO at $5,000 to $10,000 a month is $60,000 to $120,000 a year. With the whole accounting team, $90,000 to $180,000.

Salary guides for companies under $100M quote CFO packages up to $500,000, which is why most published comparisons overstate the gap.

Is tax included?

No. Tax prep, tax strategy and sales tax compliance are separate at Ecom CFO and at most ecommerce accounting firms. We coordinate with your tax preparer.

How long does it take to get started?

Kickoff is within 30 days of signing, and billing starts at kickoff. The first 13-week forecast and first close land in month one, the budget in month two, the full monthly rhythm by month three. CFO-only can start in about two weeks.

How long is the engagement?

Ongoing monthly retainers. Most clients stay for years. Several have been with us since 2022 and have grown from eight figures to nine.