Building FinTech Applications on Bubble.io: A Practical Guide

Updated October 2026 · By Athar Ahmad, certified Bubble.io developer and founder of SA Solutions

Financial services are full of manual, paper-based processes: applications, document collection, approvals, reconciliations and client reporting. Bubble.io lets founders and finance teams build software for these workflows quickly. The trick in fintech is knowing which parts to build yourself and which to hand to licensed, specialist providers. This guide explains what fits Bubble.io, how the architecture usually works and what to plan for on security and regulation.

Fintech products that fit Bubble.io

• Lending workflows: applications, document upload, underwriting checklists, approvals and status updates
• Client onboarding portals: collecting documents and information for advisers, brokers and accountants
• Invoicing and payments tools: creating invoices, collecting payments and tracking receivables
• Financial dashboards: reporting on accounts, portfolios or business performance from connected data
• Internal operations tools: reconciliation queues, compliance checklists and case management

Build vs partner

This approach lets you launch faster and keeps regulated activities with providers built and licensed for them.

The typical architecture

1. Bubble.io runs the application: accounts, roles, workflows, dashboards and notifications
2. Specialist providers handle payments, bank data and identity checks, connected via the API Connector
3. Providers report events back through webhooks to backend workflows; see backend workflows
4. Bubble.io stores references and statuses, while sensitive financial details stay with the providers

For payments specifically, see Stripe integration and, for platforms that pay out to others, Stripe Connect.

Security essentials

• Strict privacy rules and role-based access for clients, staff and approvers
• Never store full card numbers or bank credentials in your app
• Audit logs for approvals and changes to financial records
• Two-factor authentication for staff and high-value actions
• Secure document handling; see secure file uploads
• Backups and an incident plan; see backups and incident plans

Enterprise and institutional clients may ask about security frameworks; see SOC 2 vs ISO 27001.

Regulatory planning

1. Define exactly which financial activities your product performs
2. Check which require licences in each market, and which your partners cover
3. Plan data protection for financial and personal data, including GDPR where relevant; see GDPR-compliant development
4. Document your controls and processes before launch

Frequently asked questions

Can you build a fintech app on Bubble.io?

Yes, many fintech products can be built on Bubble.io, such as lending and application workflows, invoicing and payments tools, financial dashboards, onboarding portals and internal operations tools. Regulated activities themselves are usually handled by licensed partners connected through APIs.

Do I need a licence to build a fintech app?

It depends on what the app does and where. Holding customer funds, lending, or providing investment advice are typically regulated, while software that supports these activities through licensed partners may not need its own licence. Take legal advice for your model and markets.

How do fintech apps on Bubble.io handle payments and bank data?

Through specialist providers connected with the API Connector: payment processors for card and bank payments, open banking providers for account data, and identity verification services for onboarding checks. Sensitive card data should be handled by the payment provider, not stored in your app.

Is Bubble.io secure enough for financial data?

Bubble.io provides platform-level security, and your app's security depends on correct privacy rules, roles, audit logs and careful handling of sensitive data. Many fintech teams keep the most sensitive data with specialist regulated providers and store only references.

Can a Bubble.io fintech app handle many transactions?

Bubble.io handles business workflows well. High-frequency transaction processing or ledger systems are usually better handled by specialist providers or services, with Bubble.io providing the user experience and operations layer.