Pay.net vs Basis Theory: Native Payments Processor vs Data Vault & Proxy

General-Purpose Data Vault vs Native Payments Processor

Basis Theory's core product is a token vault and secure proxy: send it any sensitive data — card numbers, bank account details, SSNs, or other PII — and it stores a compliance-isolated token in return. When a request needs the real value, Basis Theory proxies it through to whatever downstream processor, bank, or API the team specifies, so the raw data never touches that team's own infrastructure. It is intentionally not payments-specific and does not process or settle transactions itself.

Pay.net is a native processor. It tokenizes and vaults cards and bank accounts as a built-in part of processing them, settles cards and bank rails directly, and adds FedNow, RTP, SEPA Instant, SWIFT, PIX, UPI, and stablecoin settlement — with AI-powered routing choosing the cheapest, fastest, safest rail per transaction, all from one merchant relationship.

For an engineering team that wants a general-purpose, build-it-yourself compliance primitive to vault sensitive data across many systems (not only payments), Basis Theory's proxy model is purpose-built for that. For a merchant that specifically needs payments processed and settled — and would rather not design, wire up, and maintain the proxy configuration and processor integrations themselves — Pay.net delivers the vaulting benefit as a byproduct of being the processor.

Feature Comparison at a Glance

What Basis Theory Actually Offers

Basis Theory's core insight is that many companies need to handle sensitive data — not only card numbers, but SSNs, bank credentials, health identifiers, or other regulated fields — without taking on the compliance burden of storing it themselves. Its vault-and-proxy model tokenizes that data once and lets a team's own systems operate on the token everywhere, only resolving to the real value at the exact moment a proxied call to a downstream service needs it.

This makes Basis Theory a strong fit for engineering-heavy teams — often building their own fintech, lending, or vertical-SaaS product — who want a flexible, general-purpose compliance primitive they can wire into a custom architecture, rather than adopting a finished payments product.

Where Basis Theory Leads

Flexibility Beyond Payments Data

Because Basis Theory is not payments-specific, it can vault and proxy any sensitive field — SSNs, bank login credentials, health data — inside one general compliance boundary. Pay.net's vaulting is scoped to payments data as part of being a processor, so it isn't a fit for a team that needs to vault non-payments PII too.

Full Control Over Downstream Integrations

Teams that want precise control over exactly which processor, bank, or API a proxied request resolves to — and are willing to build and maintain that mapping themselves — get maximum architectural flexibility from Basis Theory's primitive-level approach. Pay.net makes that same routing decision for the merchant automatically via its own native rails, trading configurability for zero build effort.

Where Pay.net Leads

No Integration Project Required

Basis Theory is a building block — a team still has to design the proxy configuration and integrate with a real payments processor underneath it before a transaction can actually settle. Pay.net is a finished, ready-to-use processor: cards, ACH, FedNow, RTP, and stablecoin all work immediately behind one API, with no separate integration project to scope and build.

Native FedNow, RTP, and Stablecoin Settlement

Basis Theory has no processing or settlement layer of its own — real-time bank rails and stablecoin settlement are entirely outside its scope, regardless of what it's proxying to. Pay.net processes all three natively, with AI-powered routing choosing the best rail per transaction.

Built-In Fraud Guarantee

Fraud prevention isn't part of what a vault-and-proxy product does — that responsibility stays with whatever processor Basis Theory is configured to proxy to. Pay.net's Fraud.net-powered engine applies one consistent fraud model across every rail, backed by a contractual guarantee of losses below 2 basis points.

Faster Time to a Live Transaction

Since Basis Theory only vaults and proxies, a team still needs a live processor relationship, integration, and testing cycle before money actually moves. Pay.net provisions a sandbox same day and processes real transactions across every native rail without a separate processor to onboard.

The Right Setup Depends on What You're Actually Building

The decision usually comes down to the shape of the problem:

• Building a custom fintech or vertical-SaaS product that needs to vault many types of sensitive data, not just payments: Basis Theory's general-purpose primitive is purpose-built for exactly this, with full control over downstream integrations
• Need payments processed and settled without building and maintaining a custom vault-and-proxy architecture: Pay.net's ready-to-use processor covers tokenization, routing, and settlement from one relationship
• Combined: Some teams use Basis Theory to vault non-payments PII (SSNs, bank credentials for underwriting) while using Pay.net directly for the actual payment processing and settlement

When to Choose Basis Theory

• You need to vault sensitive data beyond payments — SSNs, bank credentials, health data, or other regulated PII
• You want full architectural control over exactly which downstream processor or API a proxied request resolves to
• You're building a custom fintech product and want a compliance primitive to wire into your own stack, not a finished payments product
• Your engineering team has the capacity to design, build, and maintain the proxy configuration and processor integrations

When to Choose Pay.net

• You need payments processed and settled, not just vaulted and proxied to a processor you still have to integrate
• FedNow or RTP real-time settlement matters, ready to use without building a rail integration
• Stablecoin settlement matters for cross-border collections
• A single, contractually-guaranteed fraud model across every rail, rather than fraud handled separately by whatever processor you proxy to
• You want to go live same day without a custom vault-and-proxy build project first

Frequently Asked Questions

Does Basis Theory process payments?

No. Basis Theory is a data vault and secure proxy — it tokenizes and stores sensitive data (cards, bank details, SSNs, or any other PII) and proxies requests to whatever processor, bank, or third-party API a company already integrates with, so raw data never touches that company's own servers. It does not settle transactions or hold processor relationships itself. Pay.net natively processes cards and bank rails and settles funds directly, with vaulting built in as part of that processing stack.

Is Pay.net a replacement for Basis Theory?

For engineering teams building a custom, general-purpose data vault to reduce PCI/compliance scope across many systems (not just payments), Basis Theory's proxy-and-vault primitive is purpose-built for that. Pay.net is the better fit for merchants who specifically need payments processed and settled, with tokenization already handled natively, and no separate vault-plus-integration project to build and maintain.

Which is better for a team that wants to move fast without building their own payments infrastructure?

Basis Theory still requires the team to build and maintain the actual proxy configurations, token-to-processor mappings, and integrations with each downstream processor or bank they route to — it's a primitive, not a finished payments stack. Pay.net ships as a complete, ready-to-use processor: cards, ACH, FedNow, RTP, and stablecoin all work out of the box behind one API, with AI-powered routing already built in.

Which platform is better for reducing PCI compliance scope?

Both reduce PCI scope by keeping raw card data off a merchant's own servers. Basis Theory does this generically for any sensitive data type via a token vault and proxy, useful when a company needs to vault more than just payment data. Pay.net reduces PCI scope specifically for payments as a side effect of being the processor itself, with no separate vault vendor or proxy layer to configure.