1. At a Glance

There are banks that grow fast and hide stress.

There are banks that stay conservative and grow slowly.

And then there is Tamilnad Mercantile Bank — trying to do both.

FY26 looked like a year where the old regional banker quietly started acting ambitious. Gross advances rose 20.3% YoY to ₹53,379 crore. Deposits grew 14.9% to ₹61,712 crore. Profit rose 13.1% to ₹1,338 crore. GNPA fell to a decade-low 0.73%. Book value crossed ₹638. Yet the market still values it at just 8.75 times earnings and 1.16 times book.

That discount is the mystery.

Is it because the market does not believe growth can continue?

Or is it because the ownership dispute hanging over nearly 38% shares acts like a permanent “please apply discount” sticker?

This is where things get interesting.

Most small banks chase growth by stretching risk.

TMB seems to be doing the opposite — gold loans capped internally, unsecured exposure only 0.10% of advances, collateral-heavy MSME, and management talking more about provisioning than chest-thumping. Strange behavior in banking. Almost suspiciously sane.

And management, to its credit, appears to have walked the talk from older concalls.

They guided 16–17% advances growth.

Delivered 20%+.

They guided better asset quality.

GNPA dropped from 0.91% to 0.73%.

They said CASA decline had bottomed.

It reversed upward.

That matters. In banking, promises are cheap. Liability franchises are not.

Still, before we get carried away — this is not a spotless fairy tale.

There is concentration risk:

• 73% branches in Tamil Nadu.
• Agriculture plus MSME dominant.
• Gold loans still huge.
• Ownership litigation unresolved.
• Contingent liabilities ₹6,543 crore.
• ECL norms could demand added provisioning.

So what is this?

A boring compounding machine hiding in plain sight?

Or a bank the market keeps cheap because old ghosts refuse to die?

That is the puzzle.

And honestly — at 8.75 P/E for a 14% ROE bank, the market seems to be pricing in something.

Question for readers:
Is this discount caution… or opportunity in disguise?

2. Introduction

TMB is not trying to be the next flashy retail bank.

No super-app drama.

No celebrity ads.

No “we are a tech company with a banking license” nonsense.

It is still largely a spread business run with old-school discipline.

And sometimes old-school prints money.

Revenue grew from ₹5,291 crore to ₹5,819 crore.

PAT rose from ₹1,183 crore to ₹1,338 crore.

ROA improved to 2.05% in Q4.

ROE reached 15.03% in Q4.

Those are not weak numbers.

For context, many banks would happily trade at 2x book for this.

TMB sits near 1.16x.

That valuation gap is the entire story.

Because operationally, FY26 looked more like expansion than stagnation:

• 44 branches added.
• Digital share of transactions at 96.85%.
• Advances growth highest in 40 quarters.
• Deposits growth highest in 39 quarters.
• Shareholder funds