Enabling every company to be a fintech company
Add cards, lending, payments, and treasury to your product without building a bank. Theorem gives your business the same revenue-expanding financial rails Shopify and Toast built — as a service.
Multiply revenue per user with embedded financial products
For every dollar your customers spend on your software, they spend several more on payments, lending, cards, and banking. Today that revenue goes to banks and processors they barely think about.
Theorem lets you keep it inside the relationship you’ve already built. Drop the financial primitives into your product as APIs. Underwrite using your own operating data. Capture the spread, the interchange, and the yield — without a banking license, a charter, or a compliance team.
Issue corporate and earned-wage cards. Capture interchange and spend categorization on every swipe.
Take basis points on every transaction your customer already runs through your product.
Extend credit lines underwritten with the operating data you already see in real time.
Earn yield on idle balances. Money sitting in the workflow becomes a revenue line.
Add financial products to what you already do
Three things you can ship next quarter.
Each primitive is a standalone product, available through composable APIs. Pick one and ship it as a feature of your existing product — no infrastructure to build first.
Payments
Take basis points on every transaction your customer already runs through your product. AP, AR, payroll, point of sale — wherever money moves, capture it. Real-time settlement and spend categorization built in.
Cards & Treasury
Issue corporate and earned-wage cards. Offer yield on idle balances. Interchange and yield as new revenue lines from balances and spend you already see — no new product to teach customers.
Credit & Lending
Extend credit lines to your customers using your own operating data as the underwriting signal. The system that runs the work also prices the risk. No external data pull, no third-party adverse selection.
Why this works
Companies that did this. What you get out of the box.
Embedded financial services aren’t theoretical — the playbook has been run successfully by some of the largest software businesses of the last decade.
Companies that did this
Software businesses that embedded financial services and turned themselves into multi-billion-dollar fintechs.
Shopify
Added payments to merchant software. Today, ~50% of revenue comes from financial services.
Toast
Layered payments and Toast Capital lending on restaurant POS. Capital underwrites with transaction data the platform already sees.
Mindbody
Embedded payments alongside studio scheduling. Customers spend ~$250/mo total: $150 software + $100 payments.
ServiceTitan
Added payments after reaching scale in field-service software. Revenue per customer expanded materially.
What you get with Theorem
Concrete deliverables. Each one is an API your team integrates — not a service you have to build.
Native checking accounts for your customers. Real-time balance, transaction history, and statement generation built in.
Corporate and earned-wage cards. Issue, fund, and authorize via API. Interchange routes back to you.
Underwritten with the operating data your product already produces. No third-party data pull required.
Yield-bearing accounts on idle balances. Money in your workflow earns. The yield spread is your margin.
Add the financial layer to your product.
The customers are already there. The data is already yours. Theorem makes the rails as easy to ship as a feature flag.