Build vs Buy: The Real Cost of Adding Reports to Your .NET SaaS Product

Every .NET SaaS team hits this moment: customers start asking for reports and dashboards. Do you build it yourself or use an embedded reporting solution?

The "build it" answer feels right at first. You know SQL, you know your data model, you have a charting library picked out. But there's a pattern I've seen repeatedly: teams underestimate the ongoing maintenance cost and end up with a reporting system that consumes 20–30% of a developer's time indefinitely.

What You're Actually Building

A production reporting system for a multi-tenant SaaS requires:

Query engine — filter, sort, group, aggregate
Multi-tenant data isolation — tenant-scoped at the query layer (not just UI)
Chart rendering + configuration UI
Dashboard layout engine (if you want multi-widget dashboards)
Saved report persistence + permissions
PDF/Excel export
Scheduled email delivery

Year 1 estimate for a custom build: 460–780 developer hours (~$57,500–$97,500 at market rates). That's before self-service report creation — if customers want to define their own reports, add 200–400 more hours.

Year 2+: ~20% of a senior developer's time for maintenance, new reports, schema migrations. That's $40,000–$60,000/year ongoing.

The Opportunity Cost

Every sprint spent on reporting infrastructure is a sprint not spent on your core product. Reporting is table stakes — customers expect it, but it's not what differentiates your SaaS.

When to Buy

For most .NET SaaS products: buying an embedded reporting solution is the right call. Dotnet Report ships as a NuGet package with the full stack included — report builder, dashboards, charts, scheduling, export, multi-tenant isolation. Integration takes 1–2 weeks. Ongoing maintenance is minimal.

The math: custom build saves you the license cost but costs you 460+ hours in Year 1 and $40K+ every year after. The break-even is usually never — especially when you factor in opportunity cost.