Fractional CFO for B2B marketplaces companies
B2B marketplaces carry the same GMV-versus-net-revenue problem as consumer marketplaces, plus a credit and financing layer that can quietly dominate the economics. Take rate is rarely a single number - base transaction fee, payments margin, financing spread on net-terms or BNPL, and often a fulfilment layer on top. Facilitator sales tax exposure applies as in B2C.
What separates a real B2B marketplace CFO is keeping the marketplace P&L and the financing P&L on separate axes. Base fee, payments and fulfilment behave like transaction economics; financing spread behaves like a small lender's balance sheet, with credit loss reserves, vintage analysis and capital provider covenants. Buyer-seller density and payments-float working capital complete the picture.
Flow provides fractional CFO, financial modelling and FP&A to B2B marketplace companies across wholesale and retail buying, industrial and MRO, food and beverage ingredients, chemicals and materials and professional services procurement. Startup CFO support for marketplace and embedded-financing operators.
KPIs to track for "B2B marketplaces" startups
We're very 'KPI-driven' fractional CFOs, and we make sure to monitor the right metrics for your startup.
GMV
Net revenue
Net take rate
Active buyers
Active sellers
Buyer-seller density
Repeat order cohort
Fill rate
Payments float
Credit loss rate
Financial modelling for "B2B marketplaces" startups
As fractional CFOs, we build KPI-driven financial models that are insightful and easy to maintain.
Financial modelling is both art and science - models must be robust, but also understandable, and useful for both internal planning and VC fundraising purposes. Hire a fractional CFO who knows how to handle both sides of the equation.
Marketplace and financing P&Ls split
Transaction take-rate economics modelled on one axis, financing spread on another with its own credit-loss reserves and vintage analysis. Stops a small lender's balance sheet from being lumped into a marketplace multiple.
Take-rate stack by component
Base transaction fee, payments margin, fulfilment layer and financing spread modelled as separate revenue streams with their own margins. Reveals which layer actually generates contribution and which is being subsidised.
Buyer-seller density model
Liquidity per category and geography measured as orders per active buyer-seller pair against fill rate and search-to-purchase conversion. Shows which verticals have reached marketplace dynamics and which still need supply seeding.
Credit loss and vintage analysis
Net-terms and BNPL exposure modelled by buyer credit cohort against historic charge-off curves and recovery rates. Provisions losses by vintage so a growing book does not flatter its loss ratio.
Payments float and working capital
Cash held between buyer payment, settlement and seller payout modelled by payment method and terms band against capital-provider covenants. Separates float that funds operations from float that belongs to sellers or lenders.
Facilitator tax and embedded compliance
US state economic nexus and EU VAT registration thresholds tracked against facilitated GMV, with reverse-charge and zero-rate B2B rules layered on. Quantifies the registration and remittance liability the marketplace carries rather than its sellers.
Founders and investors we've worked with
We've supported winning builders across B2B marketplaces and beyond.
TBô
We acted as fractional CFO to TBô, a Zurich-based tech-enabled DTC male underwear brand, building a bottom-up financial / operating model with cohort-level KPIs and positioning the company for its next venture round.
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Onlogist
We acted as fractional CFO to Onlogist, a Hamburg-based online marketplace for last-mile vehicle transfer, providing confidential valuation guidance and operating model support.
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Marcura
We acted as fractional CFO to Dubai-based Marcura, owner of maritime payroll and B2B payments platform MarTrust, advising on the strategic e-Wallet vendor selection and supporting product/finance integration.
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Hector
We acted as fractional CFO to Hector Aurumi, a Dubai-based specialist software house with AI/ML, IoT and data science expertise, providing confidential valuation guidance to the management team.
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Bonart
We've worked as fractional CFO with Bonart, a Zurich-based independent Swiss strategic advisory and execution platform for PE and investor fundraising, providing long-term confidential valuation guidance.
See moreRecent fractional CFO track record
See our fractional CFO and financial modelling experience across B2B marketplaces and beyond.
Simple pricing
No hidden costs, no complicated long-term contracts. We understand how important flexibility is for B2B marketplaces startups.
Per month
- Accounting / FP&A tech stack implementation
- Monthly financial statements and reporting pack
- Quarterly board pack with detailed financial analysis (with variance analysis vs. budget, relevant KPI observations etc.)
- Investor-friendly output
Per month
- Everything in Core, plus
- Operating model (via an online platform like Runway or Excel-based)
- Ongoing model maintenance, refining projections, burn/runway management
- Customer cohorts modelling, churn and retention analysis
- LTV / CAC, unit economics analysis
- Cap table management
Per month
- Everything in Grow, plus
- M&A / fundraising support; review of business plan
- Pitch deck preparation
- Investor approach strategy / list building
- Due diligence support and deal negotiation
- Valuation as required and free access to Multiples Pro
Packages shown are illustrative, final pricing is tailored to client requirements.
Explore our fractional CFO offering for similar verticals
We're a specialized fractional CFO to e-commerce & marketplaces companies.
Our fractional CFO experience spans across all e-commerce & marketplaces verticals.
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We know tech inside & out.
We provide fractional CFO services to companies operating across the entire tech.
More services
We help you scale by providing fractional CFO advice, through fundraising and a successful M&A exit.
VC fundraising for B2B marketplaces companies
We help you prepare materials, reach out to investors in our extensive network, negotiate fair term sheets and structure the VC round.
Learn moreM&A for B2B marketplaces companies
We advise winning tech companies on M&A exits, and over the years successfully executed numerous transactions with both financial and strategic buyers.
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