SaaS vs. Custom Software: A Practical Cost Checklist for Growing Teams

A decision framework shared by eDeskCloud outlines when growing businesses should stick with SaaS tools versus investing in custom-built software. Key warning signs for outgrowing SaaS include paying for largely unused seats, relying on spreadsheets to bridge multiple tools, and being forced to change internal processes to fit vendor workflows. A five-year cost comparison shows that for 25 users, a $30,000 custom build can undercut SaaS spending by roughly $11,000, with break-even typically arriving around year three. The guide recommends keeping commodity functions like payroll and compliance on established SaaS platforms while building only the workflows that represent a genuine competitive differentiator. Teams are advised to budget 15–20 percent of build cost annually for maintenance and to secure full ownership of code, data, and infrastructure before any development begins.