Build vs buy: HR systems for Indian companies
Reviewed by Mellow Editorial Team, HR & payroll content team
Building your own HR system gives you full control but demands significant engineering time and ongoing maintenance. Buying an established platform gives you faster deployment and statutory compliance out of the box — but you trade some flexibility for it.
What "build vs buy" actually means in the HR context
For most Indian companies, "build" means commissioning a custom HRMS from an internal team or an outsourced developer. "Buy" means subscribing to a commercial platform — whether that is a broad HRMS like Darwinbox or Keka, a payroll-specific tool, or a global employment platform like Mellow.
The comparison is not simply about cost. It is about where your team's attention goes, how quickly you can stay compliant, and what happens when the law changes.
The real cost of building
The upfront estimate for a custom build almost always underestimates what gets added later. A basic HRMS that handles employee records is straightforward. One that handles Indian payroll correctly is not.
Payroll in India requires, at minimum:
- Monthly TDS calculation under the correct slab regime, with a 4% health and education cess on top
- Quarterly Form 24Q filing and annual Form 16 issuance to every employee
- EPF contributions at 12% each from employee and employer, routed through the EPFO portal
- ESI deductions for eligible employees below the wage threshold
- Gratuity tracking for employees approaching five years of service
- Alignment with India's four consolidated Labour Codes, now operative from 2025
Each of these has its own filing calendar, portal, and edge cases. Building logic to handle all of them — and to update that logic when rules change — is not a one-time investment. It is a recurring one. Every Budget announcement, every EPFO circular, every revision to the Labour Codes creates a maintenance task.
A small engineering team building this alongside a product roadmap will feel that drag immediately.
Where bought systems earn their cost
A commercial HR or payroll platform has, in theory, already absorbed the statutory complexity. The EPF and ESI integrations exist. The Form 24Q output is generated automatically. The TDS engine updates when the Finance Act changes. You are not building that; you are paying for it as part of a subscription.
That matters most for companies that are growing quickly or operating across multiple states, where compliance obligations multiply fast. It also matters for founders and HR leads who do not have a dedicated compliance team watching every EPFO or ESIC notification.
The honest caveat: not all platforms execute this equally well. Some older HRMS tools have patchy compliance modules that still require manual intervention. Before committing to any platform, it is worth asking specifically how they handle mid-year tax regime changes, how quickly they push statutory updates, and whether their Form 24Q output has been tested with a CA.
Where building can make sense
Custom builds are not always wrong. There are scenarios where they are genuinely the better choice:
You have highly unusual workflows. A staffing company that bills clients per placement, a platform business with variable pay structures, or a company with complex multi-state wage rules may find that off-the-shelf tools do not map cleanly to how they actually operate.
You already have a strong internal tech team. If payroll logic can sit inside a broader ERP or finance system your team already owns, integration costs on a third-party tool may exceed the cost of extending what you have.
You want full data ownership without contractual restrictions. Some organisations — particularly in regulated sectors — have specific requirements about where employee data lives and how it is accessed.
Even in these cases, a common middle path is to buy for statutory compliance (payroll, TDS, EPF filings) and build or configure for everything else.
How to frame the decision practically
A few questions that cut through the abstraction:
How many employees do you have now, and where do you expect to be in 18 months? Under 30 employees, a lean bought tool is almost always cheaper and faster. Above 200, the customisation argument gets stronger — but so does the risk of building something that cannot scale.
Do you employ people across states or countries? Multi-state compliance in India is already complex. If you also have contractors or employees outside India, a platform built for cross-border employment — like how Mellow runs payroll across six countries on one platform — removes a class of problem entirely.
Who owns compliance if your build breaks? With a vendor, there is a contract and an SLA. With an internal build, the answer is usually whoever built it — who may have moved on.
What is the opportunity cost? Every engineering sprint spent on payroll compliance logic is a sprint not spent on your product. That trade-off is worth making explicit before a build decision is taken.
The right answer depends on your company's size, technical capacity, and how standard your employment structures are. What is rarely the right answer is building a compliance-heavy payroll engine from scratch when your core business is something else entirely.
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