Customer Portal Development: Features, Costs and How to Scope It

Why businesses build portals

• Clients keep asking for the same documents and statuses.
• Staff spend hours a week on updates that could be self-serve.
• You want clients to pay, book, or submit online.
• You want a professional experience that competitors do not offer.

Features clients actually use

• A dashboard showing what is happening with their account or project.
• Documents: invoices, statements, contracts, reports.
• Actions: pay, book, request, approve, upload.
• Messaging or notes tied to the record, with notifications.
• Account management: users, contacts, preferences.

Integrations that make it useful

A portal is only as good as the data behind it. Connecting to your CRM, accounting, project or practice system means clients see live information without your staff re-keying it. That integration is often the largest part of the build and the part that decides whether the portal gets used.

Cost and timeline

A customer portal with accounts, documents, one or two actions and integration with an existing system typically costs $40,000 to $120,000 in 2026 and takes three to five months. Simple document portals can be less; portals with payments, approvals and complex roles are more.