Cost guide
Custom software development cost in India (2026): and when to buy instead
By Samuel Marndi · Updated
The short answer
A focused custom system — inventory, billing, a workflow tool — costs ₹2,50,000–₹6,00,000 in India, with simple builds starting around ₹1,50,000. A full custom ERP for an SME is ₹8,00,000–₹25,00,000. On top of that sits annual maintenance at 15–20% of the build, which is the line most quotes mention once and no buyer models over three years.
And the honest headline: most businesses asking for custom software should buy something instead. Tally Prime is about ₹22,500 once. Marg ERP starts around ₹10,300. A cloud inventory platform is ₹1,000–₹5,000 a month. If your process is ordinary — and most are — the three-year sum is not close.
What custom software actually costs, by what you are building
These are researched Indian market bands for 2026, and the spread inside each row is driven far more by how many integrations and user roles you need than by the feature list itself.
| What you are building | Build cost | Typical timeline | Annual maintenance |
|---|---|---|---|
| Simple internal tool — one workflow, few users | ₹1,50,000 – ₹3,00,000 | 4 – 8 weeks | ₹25,000 – ₹60,000 |
| Focused system — inventory, billing, scheduling | ₹2,50,000 – ₹6,00,000 | 6 – 12 weeks | ₹40,000 – ₹1,20,000 |
| Retail or warehouse system — multi-location, stock movement | ₹6,00,000 – ₹18,00,000 | 3 – 6 months | ₹1,00,000 – ₹3,00,000 |
| Lean custom ERP — 10–30 users, core modules | ₹6,00,000 – ₹10,00,000 | 4 – 7 months | ₹1,00,000 – ₹2,00,000 |
| Full custom ERP — SME, multi-department | ₹8,00,000 – ₹25,00,000 | 6 – 12 months | 15 – 20% of build |
The three-year comparison nobody runs
A build price and a subscription price are not comparable numbers, and comparing them as if they were is how businesses end up spending twenty lakh to avoid a ₹5,000-a-month bill. Run it over three years, with maintenance in, and the picture changes.
Take a small business needing inventory and billing. The off-the-shelf route is a cloud platform at ₹3,000 a month, or Tally Prime at ₹22,500 once plus upgrades. The custom route is ₹4,00,000 to build plus roughly ₹70,000 a year.
When custom genuinely is the right answer
There are real cases, and they share a shape: the process is not ordinary, and the mismatch with every available product costs you money every month.
- The process is your competitive advantage. If how you do the thing is why customers choose you, bending it to fit a product is the expensive option, not the cheap one.
- Nothing on the market fits, and you have checked. Actually checked — three products, trials run, a shortlist of what each could not do. "We looked and there's nothing" usually means a two-hour search.
- The per-user licensing has turned against you. At 200 users a ₹500-per-user-per-month product costs ₹12 lakh a year, and a build amortises fast. At 15 users it never does.
- You are already paying people to bridge the gap. Two staff spending half their week re-keying between two systems is ₹6–10 lakh a year of salary funding an integration that does not exist.
- Compliance or contracts dictate where data lives in a way no available SaaS will accommodate.
- You need to own it because you intend to sell it, licence it, or build a business on it. That is a product decision, not an IT one, and it should be made deliberately.
The four options, and the two nobody puts on the list
Almost every custom software conversation is framed as build or buy. There are four, and the missing two are where the answer usually is.
| Option | Costs most in | Right when |
|---|---|---|
| Build custom | Money upfront, and maintenance forever | The process is genuinely yours, or nothing fits and you have checked |
| Buy off the shelf | Monthly fees, and bending your process to the tool | Your need is ordinary. Most needs are ordinary |
| Configure and integrate | Integration work, and dependency on vendors' APIs | Two or three products nearly do it and the gap is the joining up |
| Fix the process, build nothing | Management effort and uncomfortable conversations | The problem is agreement, not tooling. More often than anyone wants to hear |
What inflates a custom software quote
- User roles and permissions. Three roles is a feature; eleven roles with per-field visibility is a subsystem, and it is rarely priced as one.
- Integrations, each one. Tally, the payment gateway, WhatsApp, the courier API, the bank statement import — every one is its own small project with its own failure modes.
- Data migration. Moving fifteen years of records out of spreadsheets and a legacy system is frequently a third of the project and almost never in the first quote.
- Reports. "And we'll need some reports" has no bounds. Name them, with the columns, before anyone quotes.
- Offline working. A system that must work when the internet does not is a materially different build. Say so upfront or discover it in month four.
- Mobile as well as desktop. Two interfaces, not one, unless it is genuinely responsive web — which is usually the right answer and should be stated.
- Approval chains. Multi-step approvals with delegation and audit trails are their own module, whatever they sound like in a meeting.
The costs that arrive after launch
A build quote is not the cost of the software. These are the ones that recur, and leaving them out of the decision is what makes a custom build look cheaper than it is.
| Recurring cost | Typical | Notes |
|---|---|---|
| Maintenance and fixes | 15 – 20% of build, a year | The industry norm, and the figure to budget rather than hope about |
| Hosting and database | ₹3,000 – ₹25,000 / month | See what the cloud costs in India for the bands |
| Changes and new features | Quoted per change | Agree the rate before you need it, not during the month you need it |
| Third-party services | At cost | SMS, email, gateway fees, maps, storage — in your accounts, not the developer's |
| GST | 18% on the build and on maintenance | Input credit if you are registered, real cost if not |
| The person who knows it | Opportunity cost | One developer who understands your system is a risk you accept knowingly or not at all |
How to buy it without getting hurt
- Pay for discovery separately, and keep the output. A process map and a written scope are worth having even if you then buy a product instead — and a developer who will not sell discovery without the build is selling the build.
- Buy module by module. Billing first, in production, used by real people, before inventory starts. Three modules delivered is better than eight specified.
- Insist on the ownership clause. Source code and data assigned to you on final payment, in writing — under Indian law it does not happen by default. See red flags when hiring a developer.
- Ask what happens if you stop. Can you export your data in a usable form, and can another developer run the system? If not, the price was never the real cost.
- Get the maintenance figure before you sign the build. 15–20% a year, for how long, covering what. Finding it out in month thirteen is a bad time to negotiate.
FAQ
Related questions
How much does custom software cost in India?
₹1,50,000–₹3,00,000 for a simple internal tool, ₹2,50,000–₹6,00,000 for a focused system like inventory or billing, ₹6,00,000–₹18,00,000 for a multi-location retail or warehouse system, and ₹8,00,000–₹25,00,000 for a full custom ERP for an SME. Add annual maintenance at 15–20% of the build, hosting, and 18% GST. The spread inside each band is driven more by integrations and user roles than by the feature list.
Is custom software cheaper than buying off the shelf?
Almost never over three years, unless your process is genuinely unusual or per-user licensing has turned against you at scale. For a small business needing inventory and billing, three years of a cloud platform is ₹36,000–₹1,80,000 and a custom build with maintenance is ₹3,70,000–₹8,10,000. Custom wins when nothing fits and you have actually checked, when the process is your competitive advantage, or when you are already paying staff to bridge a gap no product closes.
How much does a custom ERP cost in India?
₹6,00,000–₹10,00,000 for a lean build covering core modules for 10–30 users, and ₹8,00,000–₹25,00,000 for a full multi-department ERP for an SME, over six to twelve months, plus 15–20% of the build each year in maintenance. Before committing, price the alternative: Marg ERP starts around ₹10,300 and Tally Prime about ₹22,500 one-time, and configuring one of those with integrations lands at ₹1,50,000–₹4,00,000.
What is the annual maintenance cost for custom software?
15–20% of the original build cost per year is the industry norm, so a ₹6 lakh build carries roughly ₹90,000–₹1,20,000 a year. That covers fixes, dependency and security updates, and small changes — not new features, which are quoted separately. Get the figure and what it covers in writing before you sign the build, because month thirteen is a bad time to negotiate it.
Why do custom software quotes vary so much?
Because the variables that move the price are rarely in the brief: how many user roles with per-field permissions, how many integrations, whether fifteen years of legacy data has to be migrated, which reports with which columns, whether it must work offline, and whether mobile means a second interface or responsive web. Two developers quoting the same one-page description are quoting two different projects.
Should I build software or fix my process first?
Fix the process first often enough that it belongs on the list of options, and it is the one nobody writes down. Software built on top of a process nobody agrees on reliably makes it faster and worse. The test: if you cannot describe the current process in a way the people doing it would all recognise, there is nothing stable to automate yet.
Who owns custom software I paid to have built?
Not automatically you. Under the Copyright Act 1957 the author is first owner, and an independent contractor's copyright passes only by written assignment — so one clause, signed before work starts, assigning source code and data to you on final payment. This matters most at the moment you least want a surprise: changing developers, raising money, or selling the business.
Can custom software be built in stages to spread the cost?
Yes, and it is the single best way to buy it. Take one module to production, used by real people, before the next one starts. It caps your exposure if the thing turns out to be wrong, it surfaces integration problems while they are still cheap, and it means a stalled project leaves you with something working rather than a half-finished system. Insist on fixed prices per module rather than one number for everything.