Is custom software worth it?
It is worth it when it returns more than it costs — and for the right process, that bar is low. A build that removes a manual process or a growth bottleneck typically pays back in well under two years, and often inside one. The question isn't the price; it's the payback.
Benchmarks: automation payback commonly 6–18 months, well-scoped AI agents 3–12 (2026 AI-agent pricing guides); maintenance ~15–20% of build/year (industry benchmarks).
Put your own numbers in.
What is the process actually costing you a year?
A rough guide on your own numbers. Industry benchmarks put automation payback at 6–18 months and well-scoped AI agents at 3–12.
Four ways it pays back.
- Time returned — hours of manual work removed, every week, forever.
- Hires deferred — a build often replaces the next one to three roles.
- Errors and delay gone — rework, missed SLAs and bad data cost real money.
- Growth unblocked — the bottleneck capping your size is removed.
How to defend it internally.
Most £30k+ builds get signed off by someone who has to justify them. The case is simple: the annual cost of the problem, the one-time build, the payback in months, and the ongoing care. Get those four numbers straight and the decision makes itself.
Common questions.
Is custom software worth it?
It's worth it when it returns more than it costs. A build that removes a manual process or a growth bottleneck usually pays back in well under two years, often inside one. The test is the payback, not the sticker price.
What is the payback period on custom software?
It varies by what it replaces, but automation projects commonly pay back in 6–18 months and well-scoped AI agents in 3–12. Work it out on your own numbers: annual cost of the problem versus the one-time build.
How do I calculate the ROI of automation?
Add up what the manual process costs a year — hours times loaded rate times people, plus errors and delay — and compare it to the build cost plus annual maintenance. The result is your payback in months.
How do I justify custom software to my board or partners?
With four numbers: the annual cost of the problem, the one-time build cost, the payback period in months, and the ongoing maintenance. Frame it as deferring hires and removing a bottleneck, not as buying software.
What ongoing cost should I factor in?
Maintenance typically runs 15–20% of the build cost per year. Include it in the business case so the payback is honest — it's a planned cost, not a surprise.
What if the payback doesn't work?
Then don't build it — and we'll say so. If the numbers don't clear, off-the-shelf or leaving it alone is the right answer.
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