Project vs retainer: what an ongoing software partner costs.
A project builds and ships the software. A retainer keeps it alive, secure and improving — the same team, on call, every month. As a benchmark, ongoing maintenance runs about 15–20% of the build cost per year, and a managed retainer folds that into one predictable fee. Software you don't maintain quietly rots.
Maintenance benchmark: ~15–20% of build per year for SMB software (industry benchmarks).
Build it vs keep it.
- Project — a defined scope, built, tested and handed over. One-time cost.
- Retainer — ongoing hosting, fixes, security and improvements. Monthly.
- Same team — the people who built it look after it, not strangers.
- Predictable — one fee instead of surprise bills when something breaks.
Why the build won't rot.
Software isn't a painting; it lives in a moving world. Browsers update, dependencies change, security holes appear, and your business evolves. Roughly 60% of a system's total cost comes after launch for exactly this reason. A retainer is how the asset you paid for stays an asset.
What you get each month.
- Hosting and uptime — it stays online and fast.
- Security and updates — patched before it becomes a problem.
- Fixes and small changes — the system bends as the business does.
- A roadmap — planned improvements, not just firefighting.
Common questions.
What's the difference between a software project and a retainer?
A project builds and ships a defined scope for a one-time cost. A retainer keeps it running afterwards — hosting, security, fixes and improvements — for a predictable monthly fee, usually with the same team.
How much does a software maintenance retainer cost?
As a benchmark, ongoing maintenance runs about 15–20% of the build cost per year for SMB software. A managed retainer packages hosting, security, fixes and a roadmap into one monthly fee.
Do I need a retainer, or can I just pay when something breaks?
You can pay ad hoc, but it tends to cost more and move slower — and security issues don't wait. A retainer keeps the system patched and improving before things break, with the team that knows it.
Why does software need ongoing maintenance?
Because the world around it changes — browsers, dependencies, security, and your own business. Around 60% of a system's lifetime cost comes after launch. Without upkeep, software degrades and becomes risky.
What does a managed software retainer include?
Hosting and uptime, security and updates, bug fixes and small changes, and a roadmap of planned improvements — so the build keeps fitting the business instead of ageing out.
Is the retainer the same team that built it?
With a studio model, yes — the people who built it maintain it. That continuity is the point: no re-learning, no handover gap, no strangers in your codebase.
Keep reading
Related questions
Keep the build an asset.
Book a call and we'll map what your system needs to stay secure and improving — and what a managed retainer would cost.