B2B Fintech
CFO & Accounting for B2B Fintech
Senior finance and bookkeeping for payments, lending, insurance, and wealth management companies from $3M to $30M — and beyond. Our team of seasoned operators has scaled payments, lending, and vertical SaaS companies from $5M to a $1B exit — we know the metrics, the models, and what your investors will ask in diligence.
B2B Fintech Has Revenue Complexity That Breaks Standard Accounting
A bookkeeper who doesn't understand interchange will misclassify your revenue. A CFO who hasn't negotiated a credit facility will model the wrong covenants. Fintech companies need finance operators who know the business — not generalists who learn on your dime.
Gross Revenue Is Not What You Keep
Net revenue in fintech is what's left after interchange, platform fees, passthrough costs, and payout timing. Most shops stop at the gross number. Your unit economics are wrong, your margin is overstated, and your model is built on a number experienced fintech investors will correct in their first meeting.
Usage-Based Revenue Doesn't Forecast Itself
When revenue moves with transaction volume, predicting next quarter requires a model tied to customer cohorts, ramp curves, and volume seasonality — not a trend line. The model also needs to stress-test a 20% volume drop before the board asks, and make capital allocation defensible when the underlying data is noisy.
Fintech Investors Discount Businesses They Can't Underwrite
Credit businesses get lower multiples when investors can't read the quality of the book. Lending companies without a clean vintage analysis raise on worse terms. Insurtech without a loss ratio narrative gets stuck in diligence. The CFO's job is to make the story legible — and to know in advance which metrics your investor category will test first.
Fintech Businesses Aren't Created Equal. Bridges Has Worked with Payments, Lending, Insurance, and Wealth Management Companies.
Payments
Gross payment volume and net revenue diverge fast — and most books show the wrong number.
Platform fees, interchange, and passthrough costs sit between your top line and what you actually keep. Investors pricing your business at a revenue multiple want to see net, not gross — and they will ask.
- Your payment processor reconciles to your books monthly. Stripe, Adyen, or Finix — transactions mapped to your chart of accounts, payout timing accounted for.
- Gross and net revenue are separated on your P&L. Interchange, platform fees, and passthrough costs broken out so your margin reflects what you actually keep.
- GPV, take rate, and net revenue margin go into every board update. Tracked monthly, reported quarterly, and modeled forward for your next raise.
Lending
Origination fees, interest income, and credit loss provisions need GAAP treatment most bookkeepers get wrong — and experienced lending investors will find it in diligence.
Revenue recognition, loss reserve methodology, and vintage performance aren't standard. Getting them wrong delays your raise and undermines lender confidence.
- Your LOS and servicing platform map to your GL. LoanPro, Canopy, or custom stack — loan tape reconciled monthly, cohorts tracked by vintage.
- Origination fees, interest income, and loss provisions are booked correctly under GAAP. Proper treatment from day one so your financials hold up when the lender or investor looks.
- Credit facility covenants are modeled and monitored monthly. Advance rate, concentration limits, and trigger thresholds tracked — no surprises before the borrowing base certificate is due.
Insurance
Written vs. earned premium, ceding commissions, and loss reserve accounting create a P&L that looks nothing like SaaS — and gets misread by finance teams without insurance experience.
Most generalist CFOs can't produce a combined ratio analysis or explain reserve methodology to a reinsurer. Your investors and partners can tell.
- Policy admin and billing data connect to your close. Applied Epic, Socotra, or Guidewire — premium data mapped and reconciled each month.
- Written vs. earned premium and ceded reinsurance are booked correctly. Loss reserves accounted for, combined ratio tracked, no GAAP surprises at audit.
- Loss ratio, combined ratio, and unit economics by product line go into board reporting so investors and reinsurance partners can underwrite your business confidently.
Wealth Management
AUM-based and performance fees, custodian costs, and sub-advisory expenses make revenue recognition non-standard — and fee compression makes unit economics the metric that actually matters.
Most finance teams running wealth platforms can't tell you revenue per AUM by client tier or cost-to-serve by strategy. That gap shows up in diligence.
- Custodian and portfolio reporting data integrate into your monthly close. Orion, Addepar, or Tamarac — fee revenue reconciled against AUM and billing cycles.
- Advisory and performance fees are recognized correctly under GAAP. Custodial costs and sub-advisory fees separated; revenue timing handled properly.
- Revenue per AUM, cost-to-serve, and margin by client tier are tracked each quarter — so you know where the business is profitable before fee compression forces the question.
The Financial Decisions That Define a Fintech Company — and Where Most Teams Are Underprepared
Raising a Credit Facility
- Covenant model built before you sign — advance rate, concentration limits, and trigger scenarios stress-tested
- Lender diligence package prepared: loan tape, vintage performance, and portfolio stratification
- Borrowing base certificate and monthly lender reporting owned by Bridges
- Draws and paydown modeled against origination pipeline and runway — no covenant trips blind
Building a Team After Series A
- Every hire modeled against runway impact, payback period, and net revenue margin before the offer goes out
- Capital deployment plan: each dollar of the raise mapped to a milestone and burn rate
- Headcount plan tied to revenue per employee and product-line margin targets
- KPI dashboard updated monthly so the board tracks the same numbers the team does
Building a Repeatable Growth Engine
- Multi-product P&L separated by revenue stream — payments, lending, or fee income tracked independently
- GTM spend tracked against pipeline, conversion, and payback so growth investment is defensible
- Take rate and net revenue margin protected as volume scales and fee pressure increases
- Next raise modeled 12–18 months out — runway, milestones, and timing decided before the board asks
Why Payments, Lending, Insurance, and Wealthtech Companies Choose Bridges Over a General Accounting Firm
Most accounting firms know startups. Very few know fintech. The difference shows up the first time you ask for a net revenue waterfall, a borrowing base model, or a loss ratio report — and get a blank stare.
Case study
How Collectly Built Finance Operations in 90 Days That Unlocked 100%+ Revenue Growth
Collectly closed a $25M Series A with capital to deploy and no finance infrastructure to deploy it wisely. Their revenue model — healthcare payments with complex fee splits and clearing account mechanics — had been misclassified since founding. In 90 days, Bridges rebuilt the books to accrual standards, built billing workflows, real-time KPI reporting, and a full forecasting infrastructure — giving leadership the tools to invest with confidence instead of caution. That foundation became the operating system Collectly used to grow 3× over the next two years.
Read the case study100%+
Revenue growth following engagement
10 hrs
Saved weekly on finance operations
$200K
Saved annually in G&A
Common Questions from B2B Fintech Founders
What does a fractional CFO for a B2B fintech company actually do?
How is fintech bookkeeping different from standard startup accounting?
When should a B2B fintech company hire a fractional CFO?
How do you build a financial model for a payments or lending company?
What financial metrics do fintech investors look for at Series A?
Can Bridges help with credit facility diligence and ongoing lender reporting?
Make your next financial decision with confidence
Whether you're 6 months from a raise, negotiating a credit facility, or trying to understand why growth isn't converting to margin — a 15-minute call is enough to know if we're the right fit.