inparlor.
DevelopmentFor B2B SaaS

Customer, Vendor & Dealer Portals for B2B SaaS.

Self-serve portals that take the phone calls out of doing business with you. Designed and shipped for B2B SaaS companies, not generic templates with b2b saas swapped in.

Why this matters

Why B2B SaaS companies need Business Portals built around their unit economics.

Most B2B SaaS companies are operating on sites or software stacks built three to five years ago for a different version of the buyer. Engineering velocity can't keep up with the roadmap, so the integrations and features customers demand keep slipping quarter to quarter. The infrastructure decisions that compound are the ones made with the operator in the room, not the ones made in a vacuum.

Inparlor's Customer, Vendor & Dealer Portals engagement for B2B SaaS companies reflects that. We build the portals your customers, vendors, and dealers log into to do business with you without picking up the phone. The deliverables below are scoped against the unit economics, your AOV and retention, trial-to-paid conversion of 8-25%.

Where most agencies treat B2B SaaS companies as another vertical to learn on, we treat the vertical as the starting point. Accumulated technical debt makes every new feature slower and riskier to ship than the last. We will tell you on the first call which of those constraints is binding and which is solvable inside the engagement.

What we deliver

Scope built for B2B SaaS companies.

  • Two-week paid discovery with a fixed-bid proposal at the end
  • Role and permission model mapped to your account types
  • Authentication and account provisioning via Auth.js or Clerk
  • Customer portal: orders, invoices, documents, and support tickets
  • Vendor or supplier portal scoped to your procurement flow
  • Dealer or partner portal with tier-based pricing and protected catalogs
  • Document storage on S3-compatible object storage with access controls
  • Live integration to QuickBooks or NetSuite for invoice and order data
B2B SaaS benchmarks

Real numbers from the vertical.

1-3 quarters

Engineering backlog age

10-30%

Deals stalled on missing integration

8-25%

Trial-to-paid conversion

4-12 weeks

Time-to-ship a new integration

48 hours

Business Portals proposal turnaround

Our B2B SaaS-specific approach

How Business Portals runs in B2B SaaS companies, operationally.

  • Role and permission model first

    Before any screen gets built, we define who sees what, customers, vendors, internal staff, and what each role can do. Permissions are the foundation, not a setting bolted on after the portal ships and someone sees data they should not.

  • Self-serve order and invoice flows

    Customers place orders, check status, and pull invoices without emailing anyone. The flows that flood the phones and inboxes today become self-serve, so the team handles exceptions instead of routine lookups.

  • ERP and accounting kept in sync

    The portal reads and writes against the systems of record, so orders, inventory, and invoices stay consistent with the ERP and accounting tools instead of drifting into a parallel copy nobody trusts.

  • Phased rollout, one audience at a time

    We launch to one user group, internal staff or a pilot set of customers, prove the flows, then widen. Each audience comes online when its workflows are solid, so a rough first version never hits everyone at once.

FAQ

B2B SaaS buyers ask us this most.

Ready to start?

Get a proposal for B2B SaaS business portals.

We respond within 48 hours with scope, pricing, and the team that would actually run the engagement.

Get a proposal

Or explore the full Customer, Vendor & Dealer Portals page · B2B SaaS hub