Short answer: The build cost of a software system is typically 20–35% of what you will spend on it over three years. The remaining 65–80% covers hosting, maintenance, third-party licences, security, support, team knowledge, and eventual modernisation. Most Indian founders plan only for the build. The ones who plan for the full picture make better decisions about what to build, how to build it, and when.
Why TCO matters more than the build quote
When a vendor quotes you ₹6 lakh to build a business management system, that number answers one question: what does it cost to create the software? It does not answer: what does it cost to operate it for three years? The gap between those two numbers is where projects run over budget, where businesses find themselves trapped in maintenance contracts they did not anticipate, and where founders discover that the "affordable" build has become an expensive ongoing obligation.
Total cost of ownership (TCO) is the discipline of looking at the full picture before you commit. It changes some decisions dramatically — for instance, a ₹10 lakh custom build that runs on open-source infrastructure at ₹3,000/month may be far cheaper over three years than a ₹3 lakh build that requires a ₹50,000/month SaaS stack and a proprietary hosting arrangement. TCO is also how you evaluate buy vs. build honestly, rather than comparing a quoted build cost against a SaaS per-seat fee.
The hidden costs guide at /blog/hidden-costs-software-projects-2026 covers the project-phase costs that surprise founders. This guide picks up where that one ends: the operational costs that accumulate after launch.
Cost category 1: Build cost
The initial development cost sets the baseline. For India-built software in 2025–2026:
- Simple internal tool or workflow automation: ₹1.5L–₹4L
- Business management system (CRM, ERP module, ops platform): ₹4L–₹12L
- Customer-facing SaaS product, MVP: ₹8L–₹20L
- Complex platform with integrations, multi-role, mobile: ₹15L–₹40L+
Build cost is the only category where you have strong negotiating leverage before you sign. Everything downstream is harder to reduce.
Cost category 2: Hosting and infrastructure
Modern software runs on cloud infrastructure. The monthly cost depends on the architecture, traffic volumes, and whether you are on managed services (easier but more expensive) or self-managed compute (cheaper but requires operational expertise).
| Scenario | Monthly INR range | Annual INR |
|---|---|---|
| Internal tool, low traffic (basic VPS) | ₹1,500–₹4,000 | ₹18K–₹48K |
| Business platform, moderate traffic | ₹5,000–₹15,000 | ₹60K–₹1.8L |
| Customer-facing SaaS, growing | ₹12,000–₹40,000 | ₹1.4L–₹4.8L |
| High-traffic platform, managed services | ₹40,000–₹1,50,000+ | ₹4.8L–₹18L+ |
These figures assume your infrastructure is in your own cloud accounts. If a vendor hosts on your behalf, add a margin they charge on top of the underlying compute cost — typically 20–50%.
Infrastructure costs tend to grow with usage. Plan for at least 20–30% annual growth in hosting spend as the business scales.
Cost category 3: Third-party APIs and licences
Almost every modern application depends on third-party services: email delivery (SendGrid, AWS SES), SMS (Twilio, MSG91), payment processing (Razorpay, Stripe), maps (Google Maps API), authentication (Auth0, Firebase), document generation, analytics, and more.
These costs are variable — they scale with usage — but they are not free, and they can grow faster than revenue if not monitored.
| Service category | Typical cost range | Notes |
|---|---|---|
| Email delivery | ₹0–₹3,000/month | Free tiers cover up to ~25K emails/month |
| SMS (transactional) | ₹0.10–₹0.25/SMS | Varies by provider and volume |
| Payment gateway fees | 2–3% per transaction | Not a monthly fixed cost but real TCO |
| Maps / geocoding | ₹0–₹15,000/month | Google Maps pricing by API call volume |
| Auth / SSO | ₹0–₹20,000/month | Free tiers end at enterprise scale |
At early stages these costs are minor. At scale, SMS alone can run to lakhs per year. Budget for them and monitor them.
Cost category 4: Maintenance and AMC
Software that is not maintained degrades. Dependencies become outdated and develop security vulnerabilities. The platform it runs on releases breaking changes. Browser APIs change. Payment gateway APIs are versioned. Mobile OS updates affect behaviour.
Annual maintenance contracts (AMC) in India are typically quoted at 15–20% of the original build cost per year. That is the market rate for a reasonable level of active maintenance. What it should cover: dependency updates, security patches, bug fixes, minor enhancements, and monitoring response.
What to watch for: AMC contracts that are vague about scope, that exclude "feature development" so broadly that basic updates require change requests, or that tie you to the original agency with no exit clause.
For a ₹8L build:
- AMC at 15%: ₹1.2L/year
- AMC at 20%: ₹1.6L/year
If no AMC is in place, budget for at least one significant maintenance sprint per year (₹1L–₹3L) to keep the system current. Our software maintenance cost guide goes into detail on what drives these costs.
Cost category 5: Security
Security is not a feature you build once. It is an ongoing cost. In the Indian context, this includes:
- SSL/TLS certificate renewal: minimal cost if automated, but not zero
- Penetration testing: a professional pentest costs ₹50,000–₹2,50,000 depending on scope; plan for one annually on customer-facing systems
- Security patching: included in AMC if the contract is well-structured; a separate cost if not
- Compliance: if you handle payments, health data, or operate in regulated industries, compliance (PCI-DSS, HIPAA, RBI data localisation) carries its own audit and implementation costs
Many Indian businesses skip formal security testing until there is an incident. This is a false economy. Budget ₹50K–₹1.5L per year for a serious system.
Cost category 6: Support and operations
Who handles it when something breaks at 11 PM? What is the process for a data discrepancy reported by the finance team on a Friday afternoon? Support cost is real cost, even if it is paid in staff time rather than vendor invoice.
- Internal staff time: estimate 10–20% of a developer's time on a well-maintained system; more on a poorly maintained one
- External support contract: ₹15,000–₹60,000/month depending on response SLA and scope
- Incident response: unplanned, variable — budget a contingency of ₹50,000–₹2,00,000/year for a serious production system
Cost category 7: Knowledge and team
The single most underestimated cost in software TCO is human knowledge. Someone needs to understand how the system works, how to deploy changes, what the dependencies are, and how to debug production issues.
If that knowledge lives only in an external agency, you are paying a dependency tax — you cannot make decisions about the system without consulting them. If the knowledge lives in one internal developer, you have key-person risk. Building resilient documentation and a team that can operate independently is itself a cost, but it is also the condition for everything else to work.
Budget for:
- Documentation sprints: one per major release, ₹30,000–₹80,000 worth of developer time
- Onboarding new developers: a well-documented system takes 2–4 weeks; a poorly documented one can take 3–6 months
- Knowledge retention when developers leave: assume 30–60 days of reduced velocity during any senior developer transition
The 3-year TCO model: an illustrative example
This example is for a business management platform built at ₹8 lakh. All figures are illustrative ranges — your actuals will vary.
| Cost category | Year 1 (INR) | Year 2 (INR) | Year 3 (INR) | 3-Year Total |
|---|---|---|---|---|
| Build cost | ₹8,00,000 | — | — | ₹8,00,000 |
| Hosting / infrastructure | ₹1,20,000 | ₹1,44,000 | ₹1,73,000 | ₹4,37,000 |
| Third-party APIs / licences | ₹60,000 | ₹84,000 | ₹1,08,000 | ₹2,52,000 |
| Maintenance (AMC at 15%) | ₹1,20,000 | ₹1,20,000 | ₹1,20,000 | ₹3,60,000 |
| Security (testing + patching) | ₹75,000 | ₹60,000 | ₹60,000 | ₹1,95,000 |
| Support and operations | ₹1,20,000 | ₹1,20,000 | ₹1,20,000 | ₹3,60,000 |
| Knowledge / team cost | ₹60,000 | ₹40,000 | ₹40,000 | ₹1,40,000 |
| Total | ₹13,55,000 | ₹5,68,000 | ₹6,21,000 | ₹25,44,000 |
The ₹8L build becomes a ₹25L three-year commitment. The build cost is 31% of the total. This is not unusual — it is the typical shape of software ownership for a business platform at this scale.
What this means for the build vs. buy decision
When SaaS alternatives exist, compare them against TCO, not against build cost.
A SaaS alternative at ₹15,000/month is ₹5.4L over three years. If the SaaS covers your needs well and you do not need custom workflows, it is the cheaper option. If you need customisation, integration depth, or data ownership that the SaaS cannot provide, the custom build at ₹25L over three years may be the right answer — but you should make that decision with the real numbers.
The software development cost guide covers how to evaluate build quotes. The picture above is what comes after.
Want to plan a software project with full TCO visibility before you commit? Talk to NexaEx.
Frequently asked questions
What is included in software total cost of ownership beyond the initial build?
Beyond the build, TCO includes: cloud hosting and infrastructure (₹1,500–₹1,50,000/month depending on scale), third-party API and service licences, annual maintenance contracts (typically 15–20% of build cost per year), security testing and patching, support and operations (internal staff time or a support contract), and the cost of keeping institutional knowledge about the system inside your team. Over three years, the build cost typically represents only 20–35% of the total spend.
What is a typical annual maintenance contract (AMC) cost for business software in India?
AMC contracts in India are typically quoted at 15–20% of the original build cost per year. For a system built at ₹8 lakh, that is ₹1.2–1.6 lakh per year. The AMC should cover dependency updates, security patches, bug fixes, minor enhancements, and monitoring response. Watch for vague scope definitions that exclude routine updates or tie you to change requests for basic maintenance tasks.
How do I compare custom-built software against a SaaS alternative on cost?
Compare against total cost of ownership, not build cost alone. Calculate the 3-year TCO for the custom build — including build, hosting, AMC, security, support, and team knowledge costs. Then compare against the SaaS at its monthly fee multiplied over the same period, plus any per-seat fees, implementation costs, and customisation limits. SaaS is often cheaper at small scale; custom builds can be more economical at scale, especially when you factor in data ownership and integration depth.
What drives infrastructure costs up over time?
Traffic growth is the primary driver — as users increase, compute and database costs scale with them. Managed services (AWS RDS, managed Kubernetes, etc.) are convenient but expensive at scale; self-managed infrastructure is cheaper but requires engineering time. Third-party API costs also scale with usage — SMS, email delivery, maps, and payment processing all charge per transaction or per call. Plan for 20–30% annual growth in infrastructure spend as the business scales, and build cost monitoring into your operations from day one.