Custom Software vs SaaS: How to Decide
Most Businesses Make This Decision With Bad Math
You sign up for a SaaS tool because it is fast, low-commitment, and feels manageable. That logic holds at the start. It breaks down at scale.
The average company now spends $7,900 per employee annually on SaaS tools, up 27% in two years. For a 50-person team, that is potentially $560,000 a year. Vendors raise prices 7 to 12% annually as a matter of course. You do not control that number.
The opposite mistake is assuming custom software means a multi-year, enterprise-only project. That stopped being true. The real answer depends on four specific factors about your business.
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What SaaS Actually Costs
The subscription line item is the smallest part. Add integration middleware, add-on modules, and overage fees and most businesses spend 20 to 30% above the listed price.
Before a new platform processes a single transaction, configuration, data migration, and staff training typically run one to two times the first-year subscription cost. A mid-size operations team often spends 6 to 10 hours per week reconciling data manually because their tools do not connect cleanly.
Switching costs are the risk no one discusses at signup. Industry estimates put migration at $15,000 to $40,000 per application when you count internal labor. Companies without an exit plan face switching costs that average 16 times higher than those who plan for it.
Recent renewal increases were not gentle. HubSpot raised prices 12%, Microsoft 15%, Salesforce increased enterprise contracts 19% in 2025 alone.
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What Custom Software Actually Costs
A medium-complexity business application realistically runs $75,000 to $250,000 to build, with the average project landing around $132,000 and taking roughly 13 months to reach full production. Simpler tools scope for $10,000 to $50,000.
Ongoing maintenance typically runs 50 to 60% of the original build cost annually. That sounds steep until you run the five-year comparison.
A 50-person team paying $200 per user per month spends $120,000 in year one. Over five years with 10% annual increases, that total climbs past $730,000. A custom system built for $200,000 with $40,000 in annual maintenance costs roughly $360,000 over the same period, and adding users costs nothing in licensing fees.
One 2023 analysis found total SaaS spend over five years typically exceeds the equivalent custom build cost by around 72%.
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Four Questions That Determine the Right Answer
1. Is your process standard or unique?
SaaS is built for problems thousands of companies share: payroll, basic CRM, email marketing, HR records. If your workflow matches what those tools were designed for, you are getting a product refined over years by a company whose entire job is that one problem. Use it.
If your process is specific to your industry or the way your team operates, off-the-shelf software will never quite fit. You will spend years on workarounds that quietly cost real time.
2. What does your five-year headcount look like?
SaaS pricing scales with seats. A CRM at $25 per user per month costs $3,000 annually with 10 users. Grow to 50 users with two rounds of standard price increases and that same tool runs over $40,000 per year. A 5x headcount increase produces a 13x cost increase.
Custom software does not charge per seat. If growth is the plan, the math shifts fast.
3. How quickly do you need to be operational?
SaaS wins on speed. HubSpot or Jira can be running within hours. A custom build needs 8 to 12 weeks for a basic MVP and 6 to 12 months for a full production release.
If you are validating a new workflow or under a hard deadline, start with SaaS. Use it to confirm the model, then evaluate whether a custom build makes sense once you know the concept works.
4. Is this a core operation or a support function?
For support functions such as accounting, scheduling, or internal communication, SaaS almost always wins. Building something custom for a non-differentiating process does not make financial sense.
For the processes your customers interact with directly, or the ones that separate you from competitors, purpose-built software creates durable value. Businesses that invest in custom systems for core operations report an average return of $4 for every $1 invested within three years, according to one analysis.
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A Practical Threshold
If your annual SaaS spend on a specific function is above $30,000, growing, and your team is doing meaningful manual reconciliation around it, a custom build likely pays for itself within three years. Run the five-year total cost using your actual current spend and a 10% annual increase. The number usually surprises people.
If you are under $20,000 annually on that function and your workflow is standard, stay on SaaS and put your capital somewhere it compounds faster.
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How Branchnode Fits Into This
At Branchnode Technology, we work with business owners in Houston and across the country on this exact decision. Sometimes the right answer is staying on SaaS and connecting it better through data engineering or custom integrations. Sometimes the right answer is a purpose-built application.
We start with your numbers and your workflow, not a predetermined solution.
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Your Next Step
Pick one SaaS tool your team uses heavily. Add up what you have spent on it over three years: subscription fees, price increases, add-ons, and a rough estimate of hours spent on manual workarounds. Compare that against a realistic custom build estimate for the same functionality.
If you want help running that comparison for your specific situation, reach out to the Branchnode team. Which function in your business do you think might cross that threshold?