In short: revenue in fintech is a chain from acquisition to lifetime value, and the two leaks that break it are accounts that never fund and accounts that fund once and go dormant.
Key points
- Name your primary and secondary revenue lines, each with the rate it earns per funded account.
- Build the unit economics chain per channel, not blended, because channels with equal acquisition cost can retain very differently.
- Measure time from verification to first funding and set a target in days.
- Define dormancy in product terms and report funded accounts and active funded accounts as two numbers.
- Allocate fraud, credit losses and compliance cost per funded account, by channel and cohort.
This is an operating note on how to measure a business, not financial advice.
Name your revenue model
Fintech revenue per funded account comes from a short list of sources. Which ones apply depends on the product, so name them.
Interchange, if you issue cards. Transaction or FX fees, if you move money. Interest margin, if you lend. Subscription, if you sell software to businesses. Interest on balances, if you hold customer funds and earn on them.
Most products have one primary line and one or two secondary lines. Write them down with the rate each earns. A deck that says "multiple revenue streams" without a per-account figure is hiding the fact that it hasn't measured them. Part 22 made the same point to investors. This part makes it to you.
The unit economics chain
Every funded account travels a chain. Each link has a cost or a yield. The table is the whole model.
| Link | What you measure | Typical leak |
|---|---|---|
| Acquire | Cost per sign-up, by channel | Paying for sign-ups that never verify |
| Verify and onboard | Cost per verified account, pass rate | Drop-off at identity checks, manual review cost |
| Activate | Share of verified accounts with a first funded transaction | Accounts that never fund |
| Earn | Monthly revenue per funded account | Low usage, wrong product mix |
| Retain | 30/90/365-day retention of funded accounts | Dormancy after first use |
| Lifetime value | Revenue per funded account over its retained life, less losses and compliance cost | Unallocated losses hiding the real number |
Run the numbers per channel, not blended. Part 23 showed that a partner channel and a paid channel can have the same cost per funded account and completely different retention. The blended figure hides it.
The two leaks
The first leak is accounts that never fund. They passed verification, they cost you money, and they sit at zero. Usually the cause is friction between "approved" and "first transaction": a funding method that doesn't work in the customer's bank, a limit that's too low, or no reason to move money today.
Fix: measure time from verification to first funding. Set a target in days. Anything beyond it gets a prompt, a human, or a smaller first step.
The second leak is dormancy. An account funds once, does the thing it came for, and goes quiet. It still counts as a funded account. It earns nothing. This is the hidden churn in fintech, because nobody closes the account. They just stop.
Define dormant in your product terms. No transaction in sixty days, for example. Then report funded accounts and active funded accounts as two numbers. The gap between them is your real retention problem.
Activation and habit
Activation is the first funded transaction. Habit is the tenth.
Design for both. Activation needs the smallest possible first step: a low minimum, a pre-filled funding route, a clear reason to do it now. Habit needs a recurring reason: a payroll date, a monthly transfer, a card used for one specific category of spend.
Find the behaviour that predicts retention in your own data. It is usually a single action done twice within the first month. Then build onboarding to get customers to that action, and measure the share who reach it.
Cross-sell, losses and compliance
Once an account is funded and active, the main lever on lifetime value is the second product. A customer who trusts you with payments will consider you for savings, lending, or FX. The cost to sell that second product is a fraction of acquisition cost.
So measure products per funded account, and track which first product leads to which second one. Part 21 said trust is the product. Cross-sell is where that trust pays back.
Then the lines most founders leave out. Fraud and credit losses allocated per funded account, by channel and cohort. Compliance cost per account: monitoring, manual review, reporting. A channel with cheap acquisition and high loss rates is not cheap. You only see it when losses sit in the same table as revenue.
What to report monthly
Part 9 said stop reporting reach. In fintech, the monthly report has eight lines.
Funded accounts, new and total active. Activation rate from verified to funded. Retention of funded accounts at 30, 90 and 365 days, by cohort and by channel. Revenue per funded account. Loss rate. Cost per funded account by channel. Payback period by channel. Products per funded account.
Stop reporting downloads, sign-ups and total accounts. They are inputs, not outcomes, and they inflate every number downstream.
If the board asks for a growth number, give them funded accounts that are still active. That is the only growth that compounds.
The checklist
- [ ] Name your primary and secondary revenue lines with a rate per funded account
- [ ] Build the unit economics chain per channel, not blended
- [ ] Measure time from verification to first funding and set a target
- [ ] Define dormant for your product and report active funded accounts separately
- [ ] Allocate losses and compliance cost per account, by channel and cohort
- [ ] Replace downloads, sign-ups and total accounts with the eight monthly lines above
Common questions
What are the biggest revenue leaks in a fintech app?
Accounts that pass verification but never fund, and accounts that fund once and go dormant. Dormancy is hidden churn because nobody closes the account; they just stop.
What metrics should a fintech report to its board each month?
Funded accounts new and total active, activation rate from verified to funded, retention at 30, 90 and 365 days by cohort and channel, revenue per funded account, loss rate, cost per funded account by channel, payback by channel and products per funded account.
How do you calculate lifetime value for a fintech customer?
Revenue per funded account over its retained life, less losses and compliance cost. Run it per channel, not blended.
What is the difference between activation and habit in fintech?
Activation is the first funded transaction; habit is the tenth. Activation needs the smallest possible first step, and habit needs a recurring reason such as a payroll date or monthly transfer.