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How Much Does a Custom Client Portal Cost in 2026?

A custom small-business client portal built with modern serverless architecture (React + PostgreSQL / Supabase) typically costs $2,500 – $4,500+.

Why Build a Custom Client Portal?

Eliminate email chaos, secure client records, automate invoice payments via Stripe, and provide live work-order tracking on your own domain with zero monthly SaaS rent.

Explore our complete explainer on what a client portal actually is, estimate your investment with our interactive cost calculator, or view custom development services.

Written by Jeffrey Macy. View full-stack builds like Noah OS.