Build versus buy gets argued as if it is one decision with one answer. It is not. Almost every business should buy most of its software and build a little - the skill is knowing which is which. Get the line right and you spend money where it creates advantage and save it everywhere else.
Buy what is generic; build what is yours
Accounting, email, payroll, a standard POS - these are solved problems where an off-the-shelf product will beat anything you build, because thousands of businesses fund its development. Build where your process is genuinely different from everyone else’s and that difference is part of why customers choose you. Never build a worse version of something you could buy.
The test: differentiator or utility?
For each capability, ask whether doing it better than competitors wins you business. If yes, that is a candidate to build or heavily customise - it is where your specific knowledge becomes an advantage software can lock in. If it is just a cost of doing business, buy the best option and move on. The signs you have crossed that line are covered in outgrowing off-the-shelf software.
Count the whole cost of both
Buying is not free of cost beyond the licence - there is configuration, integration, per-seat fees that scale, and the risk of a vendor changing direction or price. Building is not just the initial quote - there is hosting and maintenance. Compare like for like over a few years, not licence price against build quote. Our guide to what custom costs lays out the build side honestly.
Hybrid is usually the answer
The strongest setups buy solid foundations and build a thin, sharp layer on top - the bit that fits your operation exactly - with good integration joining them. You get the reliability of proven products and the advantage of something made for you, without the cost of building the world.
If you are not sure where the line sits for your business, tell us about it and we will give you an honest view - including when the answer is "buy, do not build".
Frequently asked questions
- Should I build or buy business software?
- Buy the generic parts - accounting, payroll, a standard POS - where off-the-shelf products will beat anything you build. Build only where your process is genuinely different from competitors and that difference helps win customers. Most businesses should buy most things and build a small, sharp layer that fits their operation, joined together with good integration.
- When is it worth building custom software?
- When a capability is a genuine differentiator - doing it better than competitors wins you business - rather than a utility every business needs. That is where your specific knowledge becomes an advantage software can capture. For pure utilities, buying is almost always the better value.
- How do I compare the cost of building vs buying?
- Compare the full cost of each over several years, not licence price against a build quote. Buying carries configuration, integration and per-seat costs that scale, plus vendor risk; building carries maintenance and hosting. Like-for-like over time is the only fair comparison.