Authagonal argues the 'SSO tax' makes competitors deceptively expensive

A vendor's own blog post compares its all-inclusive pricing against Auth0, WorkOS, and Clerk, arguing that per-connection SAML and SCIM fees create a hidden 'feature tax' for B2B startups.

The Answer Up Front

Authagonal is for early-stage B2B SaaS founders who need to offer enterprise features like SAML SSO and SCIM provisioning and want predictable, all-inclusive pricing from the start. Teams already deeply integrated with Auth0 or those requiring a vast suite of identity tools beyond core authentication should likely skip it. The bottom line is that Authagonal's entire go-to-market is built on the claim that competitors' pricing models punish growth with a hidden "SSO tax," a compelling argument for any startup staring down its first enterprise contract.

Methodology

This is a v0 review based exclusively on a single blog post, "O imposto de SSO, em dólares," published by Authagonal in June 2026. The analysis covers the claims, pricing tables, and the "feature tax" argument presented by the vendor. We have not performed any independent testing of the Authagonal platform or its competitors (Clerk, WorkOS, Auth0). All performance and pricing figures are reproduced from the source material and should be treated as claims, not verified facts. This review does not cover developer experience, integration complexity, security, or reliability. Our goal is to analyze Authagonal's market positioning and the validity of its pricing critique. Competitor pricing data is taken directly from Authagonal's post; independent verification is pending.

What It Does

Authagonal's argument, presented in its blog post, centers on simplifying the cost of enterprise readiness for B2B applications. Instead of a feature-gated or usage-based model for specific enterprise functions, it offers a single price based on Monthly Active Users (MAUs) that includes everything.

Defines the 'SSO tax'

The core concept Authagonal introduces is the "feature tax" or, more specifically, the "SSO tax." The company argues that charging per SAML connection or for SCIM provisioning is an arbitrary fee for enabling a feature that already exists in the software. It's positioned as a penalty on sales success, where each new enterprise customer adds a significant, fixed cost, even if their user count is low. This contrasts with MAU-based pricing, which scales more directly with infrastructure load.

Presents two pricing scenarios

To make its point, Authagonal presents two scenarios comparing its costs to competitors. The pricing reflects public data as of June 2026, according to the post.

Scenario 1: First Enterprise Deal (~1,000 MAU, 1 SAML/SCIM connection)

In this scenario, Authagonal highlights that while Auth0 and Clerk are competitive for a single connection, WorkOS is significantly more expensive. Auth0's free offering is noted as genuinely free at this stage.

Scenario 2: Scaling (~10,000 MAU, 3 SAML/SCIM connections)

The source document provided is incomplete and cuts off mid-table for this scenario. It only provides full data for Authagonal.

Authagonal uses this second scenario to argue that as a company scales, the per-connection fees from competitors would begin to dramatically inflate the total cost, whereas its own pricing remains a simple, MAU-based fee.

What's Interesting / What's Not

The most interesting aspect of Authagonal's pitch is its go-to-market strategy. It's a direct, price-based attack on the business models of established players. The "SSO tax" is a powerful and memorable frame for a real pain point felt by B2B founders. When a startup lands its second or third enterprise deal, discovering that each new logo carries a three- or four-figure annual platform cost just to enable SSO can be a painful surprise. Authagonal's all-inclusive model offers predictability, which is highly valuable for early-stage financial planning.

The comparison is, of course, self-serving. It conveniently ignores the vast feature sets, extensive documentation, and mature ecosystems of providers like Auth0. For many organizations, Auth0's price is justified by its advanced capabilities in areas like multi-factor authentication, security policies, and identity federation. The analysis also omits other modern auth players like PropelAuth or Stytch, which may offer different pricing paradigms. By focusing solely on the cost of SAML and SCIM, Authagonal's argument implicitly treats authentication as a commoditized service where price is the primary differentiator. This may be true for a segment of the market, but it is not the whole story.

Pricing

Pricing is based on the vendor's claims as of June 2026.

• Authagonal (1,000 MAU): $29/month. Includes unlimited SSO/SCIM connections.
• Authagonal (10,000 MAU): $149/month. Includes unlimited SSO/SCIM connections.

The core model is MAU-based, with all features included in every plan.

Verdict

Authagonal's argument is compelling for a specific audience: B2B SaaS startups that need enterprise-grade authentication features but cannot afford the pricing tiers or per-connection fees of market leaders. If your primary decision criterion is predictable, transparent pricing that won't penalize you for signing more enterprise customers, Authagonal's model, as they present it, is designed for you. However, this entire review is based on the company's own marketing. A decision to adopt Authagonal should be preceded by a thorough evaluation of its feature depth, reliability, and developer experience against the very real and battle-tested ecosystems of Auth0 and others. The "SSO tax" is real, but so is the value of a mature, feature-rich platform.

What We'd Test Next

A v2 review would require hands-on testing. First, we would independently verify the pricing claims for all four providers by creating accounts and configuring the scenarios described. Second, we would implement a sample application using each service to set up a SAML and SCIM connection, evaluating the quality of documentation, the ease of the developer workflow, and the administrative UI for managing connections. Finally, we would want to assess features adjacent to SSO, such as MFA options, user provisioning workflows, and audit logging capabilities, which are often just as critical for enterprise sales.

The investor read

Authagonal is executing a classic price-disruption play in the mature identity and access management market. Its 'SSO tax' messaging targets a key vulnerability in the pricing models of incumbents like Auth0 (Okta) and specialists like WorkOS, which gate enterprise features. The bet is that price-sensitive B2B startups will choose the predictable, all-inclusive model as 'enterprise readiness' becomes a table-stakes feature earlier in a company's life. For Authagonal to be investable, it must prove this pricing wedge is strong enough to overcome the massive moats of incumbents, which include brand, feature depth, and ecosystem lock-in. Watch for early customer adoption and churn rates relative to competitors. This is a direct challenge to a high-margin SaaS category.