Every growing company hits this fork: pay for a SaaS tool that almost fits, or build something that fits exactly. The right call depends less on budget and more on how unique your process really is — and how much that uniqueness is worth over three years, not three months.
Buy for anything that isn't part of your core differentiation — there's no prize for reinventing invoicing. Build when the workflow itself is the product, or when off-the-shelf tools force you to bend your business around their limitations. Run the three-year TCO math before deciding either way; the cheaper option in month one is often the more expensive one by year three.
Compare total cost of ownership over at least three years, not just upfront price. For buying, project subscription costs as your team and usage grow. For building, include design, development, QA, hosting, and ongoing maintenance — typically 15-20% of build cost per year. The crossover point often arrives sooner than expected once seat-based SaaS pricing scales.
Vendor lock-in and process distortion. You're dependent on someone else's roadmap, pricing changes, and continued existence, and your team often ends up adapting internal workflows to fit the tool's limitations rather than the other way around.
Underestimating ongoing ownership. The build is the easy part to budget for — maintenance, security patching, and feature evolution over years is where custom projects most often go over budget if there's no plan for long-term support.
Yes — many teams buy for standard functions and build custom software only for the specific workflow that differentiates them, integrating the two. Some also start with a lean custom MVP for the differentiated part and layer in SaaS tools for everything else.
Tell us about the workflow you're weighing and we'll help you run the numbers — no pressure to build if buying is the better call.