Plain-English guide
Off-the-shelf vs custom software for a small business
Buy it or build it is rarely the real question. The real question is how many workarounds you are already running — because every workaround is your business quietly paying the gap between what the tool does and what you need.
By Matt Rooney · 23/08/2026 · T19 Digital
When off-the-shelf is the right answer
When your process is genuinely standard: accounting, payroll, email, calendars. These are solved problems with brilliant cheap tools, and anyone proposing custom accounting software should be shown the door politely. Buy boring things.
The workaround audit
List what the team does around the tools: the spreadsheet that patches two systems together, the fields everyone leaves blank, the export-edit-import ritual, the “oh you have to do it this way” a new starter learns in week two. Price each at the hours it eats. Most businesses find £5,000–£15,000 a year of quiet workaround labour — which reframes what custom costs.
The subscription maths nobody does
Per-seat pricing looks small and compounds viciously: five tools at £20 a seat for eight people is £9,600 a year, forever, rising every renewal. A custom system at £8,000–£11,200 once, plus £150 a month care, crosses over inside two years for many teams — and at the end you own an asset instead of renting eight logins.
The decision rule
Standard process, standard tool. Distinctive process — the thing customers actually choose you for — deserves software shaped to it, because that is where workarounds breed. And increasingly there is a third answer: keep the cheap tools and build the small AI glue between them, which is exactly what our discovery day is designed to spot. Sometimes the honest recommendation is a £5,000 connector, not a £10,000 system.
Questions we get on this
How much does custom software cost for a small business?
With us, from £8,000–£11,200 fixed for the core system a small business runs on, priced through the estimator on our homepage. Bigger scopes are staged so you see working software early.
What about when the developer disappears?
Own the code, the accounts and the hosting from day one — all in your name, which is how we hand over. Any competent developer can then pick it up. The trap is bespoke software you rent, not bespoke software you own.
Can we keep our existing tools and connect them instead?
Often, yes — and it is frequently the right first move. AI-era glue between tools you already like is cheaper than replacing them, and it is one of the commonest recommendations off our discovery days.
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