Migration to Mainboard

How does a small company graduate to the big league?

Many Indian companies first list on the SME platforms — NSE Emerge or BSE SME — which have lighter listing requirements suited to smaller firms. As they grow, the ambition is to move up to the mainboard, where the big, liquid, institutionally-tracked stocks trade. That upward move is called migration to mainboard.

It's a graduation, not a fresh IPO — but the bar to graduate has recently been raised sharply.

The tightened criteria

Both exchanges overhauled their migration rules in 2025 to protect investors and improve quality on the mainboard.

NSE (effective May 2025) now requires, among other things, paid-up equity capital of at least ₹10 crore, average market capitalisation of at least ₹100 crore, revenue above ₹100 crore in the latest year with a positive operating profit in two of the last three years, at least three years listed on the SME platform, and a minimum number of public shareholders.

BSE (updated August 2025) demands a meaningful average EBITDA over the preceding three financial years with a floor in each year, a three-year listing track record, clean compliance with SEBI's LODR norms, a sharply higher public-shareholder count, and a minimum promoter holding fully in dematerialised form.

How the process runs

Importantly, no separate SEBI approval is needed for migration — but the company must satisfy SEBI regulations and obtain the relevant exchange's nod. In practice the journey, with documentation and compliance checks, typically takes a few months.

The practical takeaway

For investors, migration is usually a positive signal: a company has demonstrated real scale, profitability and governance discipline to clear a much higher bar than it did at SME listing. Post-migration, the stock gains visibility, broader investor access and potential index eligibility. But the tougher 2025 rules mean fewer SMEs will make the cut — treat a successful migration as a quality filter, not a guaranteed re-rating.