When businesses evaluate software, the comparison almost always starts and ends with the wrong number. A SaaS product looks cheap at 200 dollars a month. A custom build looks expensive at 80,000 dollars upfront. Neither figure tells you what the software will actually cost you over the period you use it - and for most operational software in hospitality or retail, that period is three to five years minimum. Total cost of ownership is the number that matters. It is also the number that almost nobody calculates before signing.
Why the sticker price misleads
SaaS pricing is designed to look small. Monthly figures, per-seat models, and entry-tier pricing all compress the apparent cost. A platform at 200 dollars a month is 2,400 dollars a year - but add five staff seats at 50 dollars each, an integration module at 100, and a premium support tier at 150, and you are well past that before you have done anything unusual. Across three years it adds up, and that assumes no price increases, which are now standard practice across most SaaS platforms.
Custom builds have the opposite optics problem. A build quote reads as a large number, and it is - upfront. But once built, the ongoing cost profile is fundamentally different. You own the asset. There are no per-seat fees that scale with your team, no platform dependency, and no annual price renegotiation. The three-year total often looks quite different once you lay both out honestly. Build vs buy covers that comparison in more detail.
The costs that get left out of the comparison
Integration is usually the first hidden cost. Most off-the-shelf platforms do not talk to each other natively, so you end up paying for middleware, custom connectors, or a developer to maintain a fragile bridge between systems. In hospitality and retail specifically - where POS, inventory, loyalty, and ordering systems all need to share data - integration cost can easily match or exceed the platform licence over three years.
Training, migration, and switching costs are the other category that tends to be ignored until it is too late. Moving from one platform to another is not just a technical exercise. It is retraining your team, rebuilding your workflows, potentially losing historical data that does not export cleanly, and absorbing the productivity dip that comes with any system change. These are real costs - they just do not appear on any vendor invoice, which is why they get left out of the initial comparison.
Vendor risk and what happens at renewal
A cost that is genuinely difficult to quantify but worth including is vendor risk. SaaS platforms get acquired, pivot, wind down, or reprice aggressively at contract renewal. If your operations depend on a platform and that platform doubles its pricing or shuts down, your switching cost becomes urgent rather than theoretical. Smaller platforms in the hospitality and retail space have a mixed track record - the niche tools built for a specific workflow often do not have the commercial model to sustain a long product life.
This is not an argument against buying software - it is an argument for modelling what happens if you need to move. If the answer is that you would be in serious trouble, that risk has a value and it belongs in the comparison.
How to compare like for like
A useful three-year model includes: all licences and per-seat fees at expected team size (not current), integration and middleware costs, estimated developer time for maintenance and updates, hosting and infrastructure if applicable, training for new staff (ongoing, not just initial), and a realistic estimate of switching cost if you need to change. For a custom build, you add the upfront build cost and subtract the per-seat and licence lines. How much does a custom app cost gives a realistic sense of what the build side of that equation looks like.
The comparison will not always favour custom software - for some use cases, a well-priced SaaS product with clean integrations is clearly the right answer. But the comparison should be honest, and it should use the same time horizon for both options. If you want to work through the numbers for a specific system you are evaluating, tell us about your project and we can help you think it through.
Frequently asked questions
- What is total cost of ownership for software?
- Total cost of ownership (TCO) is the full cost of a software system over a given period - typically three to five years. It includes the purchase or build cost, ongoing licences, integration and maintenance, training, hosting, and the cost of switching away if needed. TCO gives a more accurate comparison between options than upfront price alone.
- Is custom software cheaper than SaaS over time?
- It depends on the use case, team size, and how long you use it. Custom software has higher upfront cost but lower ongoing cost because there are no per-seat fees or platform price increases. For teams that scale, or for workflows that require significant integration work, custom software frequently has lower total cost of ownership over three to five years. For simpler, stable use cases with small teams, a well-priced SaaS product can be the more economical option.
- How do I calculate software total cost of ownership?
- Build a simple spreadsheet with three columns for each year: licence and seat fees, integration and middleware, and developer or support costs. Add a one-time row for build or purchase cost, migration, and initial training. Sum across three years for each option. Make sure you are using your expected team size at year three, not your current size, and include a realistic estimate of what it would cost to switch platforms at the end of the period.