Build-vs-buy calculator from 57
Use this build-vs-buy software calculator to see when custom software becomes cheaper than SaaS subscriptions, workarounds, and integration sprawl.
Built by 57 for business owners and ops leaders who are tired of paying for software that almost fits, this calculator helps you pressure-test the break-even point and treat the decision like a business call instead of a tech fantasy.
No gate. No fake precision. If off-the-shelf is still the smarter move, the calculator should say so. Want the broader company context? Start at why57.com.
Directional decision tool
This calculator combines current SaaS spend, hidden operational cost, growth pressure, and process complexity. It is a custom software ROI calculator on purpose: the goal is clarity, not theater.
This is a directional decision tool, not a fake precision estimate. It should tell you whether you are close to the tipping point, not try to win an argument for custom software at all costs.
Annual software cost is monthly SaaS spend plus monthly automation spend, multiplied by 12. Annual manual cost is workaround hours per week times hourly team cost times 52.
(monthlySaaSSpend + monthlyAutomationSpend) × 12 + manualHoursPerWeek × hourlyTeamCost × 52
The calculator applies a growth multiplier over three years based on the growth setting. Faster growth means off-the-shelf cost usually compounds faster too.
flat: 1.00 / 1.05 / 1.10 • moderate: 1.00 / 1.15 / 1.30 • fast: 1.00 / 1.25 / 1.55
The build range starts with the project type and then gets adjusted by workflow uniqueness, integration needs, and compliance requirements.
baseRange × (1 + workflow + integrations + compliance)
Annual maintenance is 12% of the midpoint build estimate, with a floor of $3,600. Break-even compares the custom midpoint against the difference between current annual cost and annual maintenance.
max(buildMid × 0.12, 3600)
Connected to the main site
If you landed here from search, use these links to move between the calculator and the main why57.com site without losing context.
Go back to why57.com for the broader company context, proof, and the main brand entry point.
Go to why57.comUse the ROI result as the starting point for a real build-versus-buy conversation about timing, scope, and tradeoffs.
Jump back to the calculatorIf the math looks close or the workflow is messy, a short call can turn this directional score into a practical decision.
Book a strategy callWhat usually pushes businesses over the line
If the way you work is part of what makes you good, forcing it into generic software is usually more expensive than it looks. You pay for that mismatch every single week.
Hidden software cost is not just subscriptions. It is admin time, duplicated entry, integration tools, reporting hacks, and good people doing work that software should handle.
Once data flow, reporting, permissions, and process ownership become strategic, off-the-shelf tools start telling your business how it is allowed to operate.
This matters too
If you are still figuring out the workflow, custom can lock in the wrong thing. Sometimes the smarter move is to stay flexible for another season.
Urgency is real. If something needs to be live right now, buying first and building later is often the practical answer.
If the software mostly works and the workarounds are minor, this may not be the moment to build. That is not a failure. It just means you should keep your capital and attention for something that matters more.
FAQ
Anything you are paying because the tool does not fit cleanly: team time spent on admin, manual exports and imports, Zapier-style glue, duplicate systems, cleanup work, reporting hacks, and delays caused by broken data flow.
Because most businesses are not just paying for subscriptions. They are paying for the subscriptions plus the friction around them. The bigger your team gets, the more expensive that friction becomes.
When your process is tied to speed, margin, quality, or client experience. At that point the question is not “does the software have this feature?” It is “does this software let us operate the way we need to?”
Yes. If you need something immediately, off-the-shelf may be the right short-term move even if custom is the better long-term path. The calculator factors that in on purpose.
For replacement projects, a practical rule of thumb is often three to four times your current annual software spend. The right number depends on the workflow, integrations, compliance, and how much future scale you need to support.
Let's talk
No high-pressure sales routine. We look at your current stack, your bottlenecks, and whether custom software actually makes financial sense right now. If it does not, I’ll tell you.