"Fintech" is one of those words founders throw around with confidence and then have to politely Google later. At Excellence Web Services, we build fintech products for clients ranging from a single-store payment integration to a multi-million-rupee lending platform. So this post is the explainer I wish someone had given me at the start: what fintech actually means, and what's underneath each category.
The five fintech categories that actually matter
1. Payment gateways
The infrastructure that lets a website or app accept money. Razorpay, Stripe, Cashfree, PayU.
What's under the hood: APIs that handle card transactions, UPI, net-banking, EMI, wallets. Integration is usually 2–4 days for a simple checkout, 2–4 weeks for a complex flow with split payments, refunds, subscriptions.
Typical client question: "How do I add Razorpay to my Shopify store?" Answer: Shopify has a plugin. ₹0 to ₹50,000 depending on customisations.
2. Digital wallets
Closed-loop wallets where customers preload money. Loyalty programs, in-app currencies, gig-economy payouts.
Built around an RBI-registered PPI (Prepaid Payment Instrument) licence or partnership with one. Compliance is the hard part, not the engineering.
3. Lending platforms
Apps and dashboards for personal loans, business loans, EMI checkouts.
Underwriting engines, KYC integration (Aadhaar, PAN, video KYC), credit-bureau integration (CIBIL, CRIF), e-NACH for repayments, agreement signing via DigiLocker or Aadhaar e-sign.
Regulatory: requires NBFC partnership at minimum.
4. Investment / trading platforms
Stockbroking apps, mutual fund platforms, crypto exchanges (where legal), portfolio managers.
Order management systems, market-data feeds, KYC, demat-account integration. Heavy lifting on the regulatory side (SEBI registration).
5. Neo-banking / banking-as-a-service
Apps that look like banks but partner with a real bank for the underlying account.
You're essentially a UX layer plus a value-add (better savings interest, business tools, expense management). The real bank handles RBI compliance.
What's actually hard about fintech
Compliance
This is 60% of the work. RBI, SEBI, IRDAI rules — depending on what you're building. Don't underestimate.
Security
PCI-DSS for card handling. End-to-end encryption. Audit trails. SOC 2 for enterprise clients. One breach kills the company.
Reconciliation
The invisible kingmaker. Every transaction has 4–5 status updates from different parties. Getting reconciliation right is where most fintech startups fail at scale.
UX of trust
People entering financial details judge your UX within 3 seconds. Confidence-inducing copy, clear security badges, and recognisable design patterns matter more than they do in any other vertical.
Costs (realistic for India 2026)
- Simple payment integration: ₹15,000–₹50,000.
- Custom checkout flow with split payments: ₹2,00,000–₹8,00,000.
- Full fintech MVP (lending or wallet): ₹15,00,000–₹50,00,000.
- Compliance setup (NBFC, PPI, etc): variable, often a partnership rather than build.
What we build at Excellence
Excellence Web Services has shipped fintech work across:
- Custom payment gateways for SaaS products.
- UPI integration for D2C e-commerce.
- Lending dashboards for NBFC partners.
- Wallet-and-loyalty stacks for retail chains.
- Crypto-adjacent products (within regulatory boundaries).
If you're sizing up a fintech project — or just want a sanity check on a vendor's quote — our team would love to chat. We've sat on both sides of this conversation enough times to be useful.