Custom software vs off-the-shelf when your SaaS bill keeps climbing

If you opened a renewal email this year and your stomach dropped, you are not imagining it. The tools you rent keep getting more expensive, and you keep paying because switching is a pain. That is the whole business model. So let me lay out the actual math on custom software vs off-the-shelf, using real 2026 numbers instead of vibes.

The rent just went up again

Look at Linear. Its Business plan sat around $12 per user per month for a while. In 2026 that same plan is $16 per user per month, and the Basic plan moved from $8 to $10. So the price to keep using the exact same software you were happy with last year went up roughly a third. You did not get a third more product. You got an invoice.

Notion pulled a sneakier version. It killed the cheap AI add-on that used to run about $10 and folded full AI into its Business tier. So a team that was happily paying $10 a seat on Plus, plus a little for AI, now has to move the whole workspace up to $20 and change per seat to keep the features they already had. That is not a price increase on the pricing page. It is a price increase hiding inside a repackage.

None of this is a scandal. It is just what rented software does. The number only goes one direction, and the direction is up.

What renting actually costs over a few years

Here is where it gets real. Say you have a 10 person team on Linear Business at $16 a seat. That is $160 a month, or $1,920 a year, for one tool. Now stack the way real businesses actually work: a project tool, a docs tool, a CRM, a support inbox, a scheduling app. A small team burns through five figures a year without blinking, and every one of those bills is per seat, so it grows every time you hire.

Now run it forward five years. That is not $10,000. With hikes like the ones above baked in, it is closer to $60,000 or more over five years for tools you do not own and cannot change. At the end of it you have zero equity in any of it. Stop paying and it all disappears.

When off-the-shelf still wins

I am not going to pretend renting is always the wrong move, because it is not. Off-the-shelf software is the right call when your need is generic and huge platforms already solved it better than you ever could. Email. Accounting. Payroll. Video calls. If a tool is cheap, mature, and does a job that is identical across every business on earth, rent it and move on. Building your own email client to save twelve bucks a month is a hobby, not a business decision.

Off-the-shelf also wins when you genuinely need it running tomorrow and cannot wait for anything to be built.

When it is time to own it instead

The math flips the moment two things are true. One, the tool is expensive and priced per seat, so it punishes you for growing. Two, you only use a slice of what it does, but you are paying for the whole bloated thing anyway. That combo is the tell. You are renting a mansion to live in one room, and the landlord raises the rent every year.

That is exactly when a custom build makes sense. I built a company their own QuickBooks alternative because they were done paying for features they never touched. I built my own MenuFit app instead of paying ten bucks a month for the same reason. Right-sized software that does your one thing, and only your one thing.

The math nobody puts on the pricing page

The real cost of custom software is a one time build, and then it is yours. No per seat rent. No renewal email. No repackage that quietly doubles your bill. You pay once for exactly what you need, it does not spy on your headcount, and it never sends you a note saying the price is going up in 30 days.

Renting has a place. But if your SaaS bill keeps climbing for software you barely half use, that is not a cost of doing business. That is a signal. If you want help running the numbers, here is how I think about build vs buy.