Fractional CFO for SaaS Companies
Recurring revenue looks simple on the surface and gets complicated underneath. A fractional CFO builds the unit economics, runway, and reporting that let a SaaS founder raise, hire, and price with conviction.
Book a call with PeterWhere the money actually moves
A SaaS profit and loss statement tells you almost nothing on its own. The single revenue line hides four separate movements: new business, expansion inside existing accounts, contraction, and churn. Two companies can post identical revenue growth while one is compounding and the other is refilling a leaking bucket with sales spend. Until those four movements are split out and reported every month, nobody in the business can tell which one they are running.
The second thing that breaks is timing. Annual prepayments land as cash long before they land as revenue, so the bank balance flatters the business in the month a big contract signs and starves it eleven months later. Deferred revenue is a liability, and treating it as spending money is the most common way a growing SaaS company runs out of cash while its dashboard is green.
What we watch
Net Revenue Retention
How it is built: Revenue this period from the accounts you already had last period, including their expansion, contraction and churn, divided by what those same accounts paid last period.
Why it matters: It is the one number that says whether the business grows when sales stops. Above one hundred percent the installed base grows on its own. Below it, every dollar of new sales is partly buying back ground you already lost.
CAC Payback Period
How it is built: Fully loaded sales and marketing cost to win one customer, divided by the gross profit that customer produces each month.
Why it matters: It converts an acquisition decision into a cash decision. A long payback is survivable when the balance sheet is deep and fatal when it is not, and the same campaign can be right for one company and wrong for another purely on that basis.
Gross Margin
How it is built: Revenue less the cost of delivering the product: hosting, third-party data, payment processing, support and the customer success time attached to keeping accounts live.
Why it matters: Most SaaS teams book support and success below the line, which flatters margin and hides the accounts that cost more to keep than they pay. Putting delivery cost where it belongs changes which customers look attractive.
Cash Runway
How it is built: Collectable cash on hand divided by net monthly burn, with deferred revenue excluded from the numerator.
Why it matters: Runway measured against the raw bank balance is the number that ends companies. Cash a customer prepaid for service you still owe them is a liability that happens to be liquid.
Common financial pain points
- Top-line MRR growth hides churn and contraction underneath it.
- Customer acquisition cost is rising without a clear payback view.
- Cash runway is tracked in a spreadsheet that nobody trusts.
- Annual versus monthly billing distorts how revenue is read.
- Hosting, support and success costs sit above the gross margin line where they get ignored.
How a fractional CFO helps
- Separate new, expansion, contraction, and churned revenue cleanly.
- Model CAC payback and the path to it across channels.
- Build a driver-based runway and hiring plan tied to bookings.
- Set up board-ready reporting on retention and burn.
- Pressure-test pricing and packaging against gross margin.
- Split deferred revenue from collectable cash so the runway number is real.
The first ninety days
- 01
Days 1 to 30: get the numbers honest
Rebuild the chart of accounts so delivery cost sits in cost of sales. Split the revenue line into new, expansion, contraction and churn. Separate deferred revenue from cash. Reconcile the billing system to the ledger so both tell the same story.
- 02
Days 31 to 60: build the model
Stand up a driver-based forecast tied to bookings, seats and price, rather than a growth percentage typed into a cell. Layer the hiring plan on top of it. Run the runway under a base case and a slow case so the board sees the range.
- 03
Days 61 to 90: install the rhythm
Ship a monthly reporting pack the founder can read in ten minutes and a board pack that holds up to diligence. Set the review cadence. Hand over the model so the team can run scenarios without waiting for me.
What you receive
- Monthly close pack with retention, burn and runway on the first page
- Driver-based forecast model tied to bookings and headcount
- Cohort retention and expansion analysis
- CAC and payback by acquisition channel
- Board reporting pack and the supporting schedules
- A live dashboard your numbers flow into
Fractional CFO for saas: common questions
What does a fractional CFO do for a SaaS company that a bookkeeper does not?
A bookkeeper records what already happened and closes the month. A fractional CFO decides what the recorded numbers mean and what to do next: whether the pricing holds, whether the next five hires are affordable, how long the cash lasts under a slower quarter, and what a lead investor will attack in diligence. The two roles run alongside each other rather than replacing one another.
At what revenue does a SaaS company need a fractional CFO?
The trigger is rarely revenue on its own. It is usually one of three events: a raise where the model has to survive diligence, a burn rate the founder can no longer hold in their head, or a pricing decision that will set the ceiling on gross margin for years. A company hitting any of those is ready, whether it is at five hundred thousand or five million.
How is net revenue retention different from gross churn?
Gross churn only counts what left. Net revenue retention counts what left, what shrank and what grew inside the accounts you already had. A company can lose fifteen percent of its customers and still post net retention above one hundred percent if the survivors expand enough, and the two numbers together tell you far more than either alone.
Should annual prepayments count toward runway?
The cash is real and it is in the bank, so it counts toward liquidity. It should not count as revenue until the service is delivered, and it should be treated cautiously in a runway calculation because you owe the customer the remaining months of service. The cleanest approach is to report both figures: total cash, and cash net of what is still owed as service.
What belongs in SaaS cost of sales?
Hosting and infrastructure, third-party data and API costs, payment processing, the support team, and the portion of customer success attached to keeping existing accounts running. Sales, marketing, product development and general overhead sit below gross profit. Moving support and success into cost of sales usually drops reported gross margin, and that lower number is the accurate one.
How much does a fractional CFO cost for a SaaS company in Canada?
It depends on scope and reporting cadence rather than on industry. The honest way to size it is to compare it against the alternative: a full-time CFO in Canada carries a salary, bonus, benefits and equity, and most companies under roughly ten million in revenue cannot justify that. Book a call and we will scope what you actually need before quoting anything.
Can a fractional CFO help with a raise?
That is one of the most common reasons founders start. The work covers building a model an investor will believe, assembling the data room, preparing the historical numbers so they survive scrutiny, pressure-testing the assumptions before a partner does it in a meeting, and sitting in on diligence calls. The goal is that no number in the deck is one you cannot defend.
Ready to see your numbers clearly?
Book a call to talk through your saas business and what the first ninety days would cover.
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