Maintenance cost
Software Maintenance Cost in India: What to Budget After Launch
By Kaivan Tech · Published 4 November 2026 · Updated 4 November 2026
Short answer
Software maintenance covers hosting, monitoring, backups, security updates, bug fixes, third-party API changes and small improvements after launch. A widely used industry rule of thumb budgets 15–20% of the original development cost per year, but the real figure depends on how much the software changes, how many integrations it has and the support level you need.
- Rule of thumb
- 15–20% of build cost per year (industry estimate)
- Fixed costs
- Hosting, domains, licences, third-party APIs
- Variable costs
- Fixes, updates, improvements, support hours
- Common models
- Annual Maintenance Contract (AMC) or monthly retainer
What software maintenance includes
| Type | What it covers | Example |
|---|---|---|
| Corrective | Fixing bugs found after launch | An invoice total rounding wrongly |
| Adaptive | Keeping up with changes outside the software | A payment gateway or WhatsApp API update, a new browser or OS version |
| Preventive | Security patches, dependency updates, performance tuning | Updating a framework with a known vulnerability |
| Perfective | Small improvements and new features | A new report or an extra approval step |
| Operations | Hosting, monitoring, backups, uptime | Restoring yesterday’s backup after a mistake |
What drives the maintenance cost
- How often your process changes, and how many improvements you request
- Number of integrations (payment gateways, accounting, WhatsApp, government portals), because each one changes over time
- Hosting setup and traffic
- Required response times: business hours vs 24×7 support
- Code quality and documentation from the original build
- Security and compliance needs, such as DPDP logging, retention and breach monitoring
AMC vs monthly retainer
| Annual Maintenance Contract (AMC) | Monthly retainer | |
|---|---|---|
| Best for | Stable software that rarely changes | Software that keeps evolving with the business |
| Covers | Bug fixes, updates, uptime, defined support | Everything in an AMC plus a block of development hours |
| Payment | Yearly, fixed | Monthly, fixed hours |
| Watch out for | What counts as a “bug” vs a “change request” | Unused hours: agree whether they roll over |
How to keep maintenance costs down
Insist on code ownership, documentation and a conventional stack from the first build, so any developer can maintain it. Keep integrations behind clean interfaces, automate backups and monitoring, and update dependencies regularly instead of in risky bursts. Budget for maintenance at the start, because software that is never updated becomes a security risk and eventually needs a rebuild.
Planning a software project?
Kaivan Tech builds custom CRMs, ERP and back-office systems, inventory, billing and internal tools around your process, and you own the code.
See our custom software development servicesFrequently asked questions
How much does software maintenance cost per year?+
A common industry rule of thumb is 15–20% of the original development cost per year, but the real figure depends on how often the software changes, how many integrations it has and the support level you need.
What is included in software maintenance?+
Bug fixes, security and dependency updates, changes needed when third-party services update, hosting, monitoring and backups, and usually a set amount of small improvements.
What is an AMC for software?+
An Annual Maintenance Contract is a yearly agreement under which a vendor fixes bugs, applies updates and keeps the software running for a fixed fee, usually with defined response times.
Is a retainer better than an AMC?+
A retainer suits software that keeps changing because it includes development hours each month; an AMC suits stable software that mainly needs fixes and updates.
Related guides
Market figures are third-party benchmarks at the date shown and change over time. Kaivan Tech quotes each project after agreeing its scope.