Why 35% of Enterprises Are Ditching SaaS for Custom Software in 2026

For the past decade, the default answer to almost every business software need was the same: find a SaaS tool, swipe a credit card, and move on. Need a CRM? There's a SaaS for that. Project management? Pick from a dozen. Customer support? Just subscribe.

But something shifted. According to Retool's 2026 Build vs. Buy Report, 35% of enterprises have already replaced at least one SaaS tool with custom-built software, and 78% plan to build more custom internal tools this year. That's not a trend — it's a tectonic shift in how businesses think about the software that runs their operations.

So what changed? And more importantly, what does this mean for your business?

The SaaS Promise That Stopped Delivering

SaaS was supposed to be simple: low upfront cost, fast deployment, automatic updates. And for a while, it delivered. But as businesses matured and their operations grew more complex, cracks began to show.

• Feature bloat: You're paying for 200 features but using 12. The rest create confusion, slow down onboarding, and add security surface area you don't need.
• Integration nightmares: Each new SaaS tool adds another API to maintain, another data silo to bridge, another vendor to manage. According to the Retool report, teams spend more time wiring tools together than actually using them.
• Pricing creep: Per-seat pricing that seemed reasonable at 10 users feels predatory at 500. Enterprise tiers lock basic features behind contracts that balloon year over year.
• One-size-fits-none: Your business processes are unique. Generic tools force you to adapt your workflow to the software instead of the other way around.

As one survey respondent put it: "Why am I paying for a service when I can build exactly what my team needs at a fraction of the long-term cost?"

AI Changed the Build vs. Buy Math

The biggest accelerant behind this shift isn't frustration with SaaS — it's that building custom software has never been faster or more affordable.

AI-assisted development tools have compressed timelines dramatically. What once took months of planning, coding, and testing can now be prototyped in days and deployed in weeks. The Retool report found that 51% of builders have created production software currently in use by their teams, with about half reporting they save six or more hours per week with their custom tools.

This isn't about replacing developers — it's about amplifying them. A skilled development team, equipped with modern AI tooling, can deliver custom solutions that precisely match your business logic, integrate seamlessly with your existing systems, and evolve as your needs change.

The Shadow IT Signal You Shouldn't Ignore

Here's a stat that should get every CTO's attention: 60% of builders have created software outside of IT oversight in the past year, and 25% do so frequently.

When asked why, the answers are revealing:

• 31% cited speed — they needed a solution faster than procurement could deliver
• 25% cited unmet needs — no existing SaaS product did what they needed
• 18% said IT's process was too slow — by the time approval came, the business had moved on

Shadow IT isn't a rebellion — it's a signal. It tells you that your teams have needs that aren't being met by your current software stack. The question isn't how to stop it, but how to channel that energy into properly architected, secure, and scalable custom solutions.

What's Getting Replaced First

Not every SaaS tool is at risk. The categories seeing the most replacement are tools where workflows are highly specific to the business:

• Workflow automations and internal admin tools — the #1 category being replaced
• CRM systems — especially when businesses need deep integration with their unique sales processes
• Business intelligence dashboards — generic BI tools can't surface the exact metrics your leadership cares about
• Project management tools — when your workflow doesn't match any template in the tool
• Customer support platforms — particularly as AI-powered custom solutions outperform generic chatbots

The pattern is clear: the more your process diverges from the generic, the stronger the case for custom.

47% Want Better Business Alignment

The top reason companies are making the switch isn't cost savings — it's alignment. According to recent industry surveys, 47% of companies that moved from SaaS to custom development did so because they wanted better alignment with their business processes. Another 38% switched for better functionality in areas like reporting and automation.

This makes sense. Your business isn't generic. Your competitive advantage lives in the specific ways you serve customers, manage operations, and make decisions. When your software forces you into someone else's workflow, you're actively undermining what makes you different.

Custom software doesn't just fit your process — it encodes your competitive advantage into the tools your team uses every day.

The Build vs. Buy Framework for 2026

Not everything should be custom-built. Here's a practical framework for deciding:

Build Custom When:

• Your workflow is unique to your industry or organization
• You need deep integration between multiple systems
• Data ownership and security are critical concerns
• You're paying for SaaS features you'll never use
• Your team has already built shadow IT solutions to fill gaps
• The tool directly impacts your competitive differentiation

Keep SaaS When:

• The tool handles a commodity function (email, video conferencing)
• Regulatory compliance is baked into the SaaS platform
• The vendor's R&D investment outpaces what you could build
• Switching costs are low and the tool genuinely fits your needs

What This Means for Your Business

The 2026 build vs. buy shift isn't about abandoning SaaS entirely — it's about being intentional about where you build and where you buy. The companies getting this right are:

1. Auditing their SaaS stack — identifying tools that create more friction than value
2. Listening to shadow IT signals — understanding where teams are working around existing tools
3. Partnering with development teams that understand business — not just code, but the operations behind it
4. Starting with high-impact replacements — workflow automations and internal tools that directly affect productivity
5. Building for integration — ensuring custom solutions connect cleanly with the SaaS tools they keep

The era of subscribing to everything is ending. The era of building what matters is here.