OpenAI Select PartnerHow to Build a Fintech App in India: Regulation, Security and Product Basics
Fintech products move money or handle financial data, so the bar for security, compliance and reliability is higher than for most apps. In India, most fintech startups build on top of regulated partners rather than holding licences themselves. Understanding that model shapes everything else.
In this guide 9 sections
When a founder brings me a fintech idea, the first conversation is rarely about screens. It is about who holds the licence, who moves the money and what the regulator expects. Those answers decide the architecture.
Important
This guide is general information, not legal or financial advice. Speak to a lawyer who works with fintech companies before you finalise your model.
Common fintech models
| Model | Examples | Typical partner |
|---|---|---|
| Payments | Collections, payouts, merchant tools | Payment aggregator or bank |
| Lending | Personal, business or invoice loans | Bank or NBFC |
| Investing | Mutual funds, stocks, gold | SEBI-registered intermediaries |
| Insurance | Policy comparison and purchase | Insurers and IRDAI-registered intermediaries |
| Business finance tools | Expense, invoicing, accounting | Often no licence needed, but data rules apply |
Regulators to know
The Reserve Bank of India regulates banks, NBFCs, payments and digital lending. NPCI runs UPI and other payment rails. SEBI and IRDAI cover investments and insurance. Rules change, so check current circulars and guidance with your advisers.
Core product features
- Onboarding with KYC through a regulated verification provider.
- Strong login: device binding, PIN or biometrics, and one-time passwords.
- Clear consent screens for data access and terms.
- Transaction history and statements.
- Notifications for every money movement.
- Support and grievance redressal channels.
Building a fintech product?
Book a free 30-minute call. We will map the product, the partners you will need and the security work involved.
Book a free 30-minute call →Security is part of the product
- Never trust the app: check every amount, limit and permission on the server.
- Encrypt data in transit and at rest; store secrets in a secure vault.
- Keep detailed audit logs for every transaction and admin action.
- Monitor for fraud patterns and unusual activity.
- Run security testing before launch and after major changes.
- Report incidents as required; CERT-In issues directions on cyber incident reporting.
Our mobile app security checklist covers the app-side measures.
Payments and UPI
Most Indian fintech products use UPI for collections and payouts, through a licensed payment provider. Read our UPI payment integration guide for the options and the flows to test.
Data protection
Financial data is sensitive. Collect only what you need, record consent, support user rights and keep data for no longer than required, in line with the DPDP Act and any sector rules from your regulator.
A careful launch plan
- Confirm your model and partners with legal advice.
- Build the core flow and integrate partner sandboxes.
- Complete partner reviews and security testing.
- Launch to a small group with conservative limits.
- Raise limits and expand as monitoring shows the system is stable.
How we build fintech products
At Creuto we build the product and integrations, and work alongside your legal and compliance advisers so the technology matches what your partners and regulators expect.
Frequently asked questions
Do I need an RBI licence to start a fintech app?
It depends on what you do. Many fintech startups partner with banks, NBFCs or licensed payment providers who hold the licences. Get legal advice on your specific model before you build.
What is KYC and how is it added to an app?
Know Your Customer means verifying a user's identity. Apps usually integrate a KYC provider that offers checks such as document verification, video KYC and identity database lookups, within the rules set by regulators.
How do fintech apps accept payments?
Through payment gateways and UPI, using licensed providers. Your app integrates their APIs rather than handling money directly.
What security does a fintech app need?
Strong authentication, encryption, secure storage on the device, server-side checks for every transaction, audit logs, fraud monitoring and regular security testing.
How long does it take to build a fintech app?
The app itself can be built in milestones, but partner onboarding, compliance reviews and security testing often take longer than the development. Plan for them from the start.
Need a fintech app built with care?
We build fintech apps with security, audit trails and partner integrations planned from the start.
About Nihar Ranjan Rout
Founder & CEO of Creuto. Over the past 8+ years Nihar has led product strategy and engineering for 50+ products, including mobile apps, custom ERPs and B2B platforms. Creuto is an OpenAI Select Partner. He works directly with founders to turn an idea into a clear plan and a launched product.
More about Nihar · LinkedIn