Fractional CFO · SaaS

Fractional CFO for SaaS companies

We take over the finance function of your SaaS business: MRR and cohorts in order, the true economics of a subscription and CAC payback, runway under control, and a model and metrics that survive investor questions. Monthly retainer – no full-time CFO hire, no long contracts.

Book a CFO diagnostic call

30 min · No pitch · A real CFO, not a chatbot

Not ready to talk? Free Financial Health Check Download Financial Model Template

Who it's for

Your subscription revenue grows, but it's unclear what drives it: new customers, upgrades or one-off payments. Churn is counted differently in every report, and runway lives in the founder's head.
You're preparing for a fundraise and need the model and metrics shaped into something you can defend in front of investors.
You've raised before, and this time you want the numbers ready before the first investor call, not after it.

Symptoms you need this

If more than two of these sound familiar, this is the service to start with.

›MRR in the deck doesn't match MRR in the bank.

›Churn, NRR and cohort numbers differ between reports.

›Burn and runway are estimates, not a forecast you'd bet hiring on.

›You know CAC, but not the payback period.

›An investor question about metrics takes days to answer.

What you get

Metrics done right

One shared definition and a correct calculation of MRR, churn, NRR and cohorts – so a single metric is never counted two ways.

Subscription economics

Gross margin including infrastructure and support costs, plus CAC and payback period per acquisition channel.

Model and scenarios

Hiring plans, growth, runway, and sensitivity to churn and pricing – a model built to withstand investor scrutiny.

Included

MRR/ARR, churn, NRR and cohort tracking
CAC payback and subscription gross margin
Runway, burn and hiring scenarios
Financial model with sensitivity analysis
Investor-ready metrics and data room
Works on top of your current bookkeeping and tools

Not included

Bookkeeping and tax filing
Investor introductions and placement
Replacing your accounting software (only if it blocks correct numbers)

How it runs

Day 1

30-minute diagnostic call

We look at where your metrics and your money disagree, and what decisions you need numbers for.

Week 1–2

Data and metric definitions

Billing, payments and product data connected and cleaned; one agreed definition for every metric.

Month 1

Model and reporting live

First reporting pack, runway forecast and a metrics baseline within 30 days of start.

Ongoing

Regular rhythm

Monthly metrics review, quarterly model refresh – month-to-month renewal.

Artifacts we deliver

Metrics baseline

MRR, churn, NRR and cohorts in one place, recalculated monthly.

Runway and burn forecast

Cash runway with hiring and growth scenarios.

SaaS financial model

Revenue, costs and sensitivity to churn and price – ready for a round.

Investor pack

Model, metrics and data room for the round you're raising.

Where this played out

All cases

Huntli

Increased Runway 6x and Prevented Bankruptcy

×6 runway extended

Health Passport (Lify)

Profitability Roadmap for a HealthTech App

Month 31 break-even

Alps2Alps

Investor-Ready Holding Structure

+35% historical EBITDA

Fractional CFO for SaaS: questions founders ask

Why doesn't the MRR in our deck match the bank?+

Because billing, payments and product data are often measured with different definitions. We connect them, agree one shared definition for each metric, and give you MRR and ARR, churn, net revenue retention and cohorts that tie back to the numbers in your reports.

Which SaaS metrics do you track?+

MRR and ARR, churn, NRR and cohorts, subscription gross margin, and CAC payback by channel. We also build a runway and burn forecast with hiring scenarios and a financial model with sensitivity to churn and pricing.

Can you help us prepare for an investor raise?+

Yes. We prepare an investor-ready metrics pack and data room so that you can answer investor questions quickly. We do not make investor introductions.

What does onboarding look like?+

It starts with a free 30-minute diagnostic call. In weeks 1–2 we connect billing, payments and product data and agree the metric definitions. Within 30 days of the start you receive the first reporting pack, runway forecast and metrics baseline, followed by a monthly metrics review and a quarterly model refresh.

Do we have to change our accounting tools or sign a long contract?+

No. We work on top of your existing bookkeeping and tools, and replace accounting software only if it blocks correct numbers. It is a monthly retainer with month-to-month renewal, and an NDA is signed for every engagement.

See all questions and answers

Client reviews