Custom software vs SaaS: which is cheaper long term?

SaaS wins on month one — a low sign-up price with nothing to build. Custom software wins on month thirty-six, because the SaaS bill never stops and the custom build does.

The SaaS cost curve

SaaS pricing is built to grow with you. Per-seat fees multiply as the team grows, "premium" features get moved behind higher tiers over time, and renewal price rises are standard practice across the industry. A $99/month tool quietly becomes a $400/month tool within a couple of years, for the same core functionality.

The custom software cost curve

A custom build has a fixed cost, paid off in stages over a set period — commonly 12 months. Once it's paid off, the ongoing cost drops to hosting and maintenance only, typically a fraction of what an equivalent SaaS stack would charge. There's no vendor who can raise the price, gate a feature behind a new tier, or shut the product down.

Where the crossover actually happens

Stack up three or four SaaS tools at $100–$300/month each, and most businesses are already spending $500–$1,200 a month before the business has grown at all. Against a $10,000 custom build paid off at roughly $833/month over a year, the crossover often lands well inside the first two years — after which the custom system costs nothing but hosting, while the SaaS stack keeps billing indefinitely.

See what that looks like in practice for a Melbourne business in why Melbourne startups are ditching SaaS subscriptions, or check real Melbourne pricing at custom software development Melbourne.