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Fintech Metrics Calculator: TPV, Take Rate, NPA, NIM, CAC & Activation

Measure the metrics fintech investors check, for payments or lending models. Payments: take rate on TPV and revenue per user. Lending: net interest margin, pre-tax ROA and gross NPA. Both: activation rate and CAC.

QUICK ANSWERPayments: take rate = net revenue ÷ TPV (often quoted in basis points). Lending: NIM = portfolio yield − cost of funds; pre-tax ROA ≈ NIM − credit cost − opex as % of book. Gross NPA is loans 90+ days past due as % of the book. Activation = transacting users ÷ registered users.

Take rate = Revenue ÷ TPV
NIM = Yield − Cost of funds
ROA ≈ NIM − Credit cost − Opex
Activation = Transacting ÷ Registered users

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⚠️ Not financial or regulatory advice.

What the Fintech Metrics Calculator does

✅ Payments or lending mode
✅ Take rate in % and bps
✅ NIM, ROA and NPA
✅ Activation rate
✅ CAC per transacting user

How to use the Fintech Metrics Calculator

STEP 1
Enter your numbers
Type the figures you know. Every field starts with a realistic example so you can see how it works.
STEP 2
Read the result instantly
Results, tables and the plain-English explanation update as you type. No submit button, no login.
STEP 3
Test scenarios
Change one assumption at a time (valuation, growth, dilution, exit) to see what really moves the outcome.
STEP 4
Share or save
Copy the summary, send it on WhatsApp or print to PDF for your co-founders, board or investment committee.

Fintech metrics in the Indian context

UPI P2M payments carry zero MDR, so payments startups need other revenue: lending, merchant software, cross-border, cards or value-added services. Investors therefore look beyond TPV to revenue per user and take rate.

Lenders are judged on asset quality: vintage curves, 30+/90+ DPD and credit cost, plus compliance with RBI’s digital lending directions.

Frequently asked questions

What is TPV?

Total payment volume: the value of all transactions processed in a period.

What is a good NIM for a digital lender?

It varies by product; unsecured consumer lending runs high yields with high credit costs. What matters is ROA after credit cost and opex.

What is gross NPA?

Loans overdue 90 days or more as a share of total loans, before provisions.

Is this tool free? Do I need to sign up?

Yes. It is completely free, needs no login and has no usage limit. FastFee builds payment collection software; these startup and investor tools are free resources for founders, angels and fund managers.

Is my data private?

Yes. Everything you type stays in your own browser on this device (local storage). Nothing is uploaded to FastFee. Export or print a copy if you need to keep it.

Use it together with

CAC & LTV Calculator →CAC, LTV, LTV:CAC ratio and payback months from spend, churn and margin.Startup Benchmark Tool →Growth, margin, burn multiple, NRR, payback, churn and runway vs median and top quartile.

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