The hidden cost of keeping excess cash in your bank account

In May 2026 alone, corporate treasury desks across India pulled close to ₹54,000 crore out of liquid and money market funds, almost entirely to cover advance tax payments due the following month. That number isn't a warning sign. It's actually revealing differently. It shows how routinely large, well-run businesses treat short-term funds as a working extension of their bank account, not some separate investment decision reserved for a finance committee meeting. If that's standard practice at scale, it raises a fair question for everyone else: why does excess cash still sit untouched in so many current accounts?

Excess cash management starts with knowing what "excess" means

Not every rupee in your account is excess. Operating cash and your safety buffer both need to stay liquid and untouched. Excess cash is specifically what's left over once those two are covered, cash with no near-term claim on it that's just sitting there because nobody's actively decided where it should go. We've broken down that distinction in more detail here: What is idle cash and why should it be avoided?

The cost hiding behind a healthy-looking balance

A large cash balance feels like a sign of stability, and to a point, it is. But once you're past your operating needs and buffer, that same balance stops being protection and starts being a drag. It inflates total assets without generating income against them, which can make capital look less efficiently used when investors or lenders review the numbers. It's also quietly losing real value to inflation every day it sits untouched, even though the figure on the statement never moves.

What large corporates already do differently

The scale of movement into liquid and money market funds around tax cycles isn't a coincidence. It reflects a deliberate practice: large treasury teams don't let cash sit idle between known obligations. They park it somewhere earning a return, then pull it out exactly when it's needed. According to Outlook Money's coverage of AMFI data, these redemptions move in step with corporate tax payment schedules rather than investor sentiment, which is a strong signal that this behavior is routine treasury practice, not a one-off decision.

Most smaller businesses could do the same thing on a smaller scale. The instruments aren't restricted to large corporates. The habit just hasn't caught up yet.

Quantifying the drag with real numbers

Take a business sitting on ₹75 lakh in excess cash for a year, doing nothing with it.

These figures are illustrative and not a guarantee of future returns, but the pattern holds regardless of the exact numbers. Doing nothing is the most expensive option on this list, even though it looks the safest.

Mutual fund investments are subject to market risk. Please read scheme-related documents carefully before investing. Past performance is not indicative of future returns.

Closing the gap without adding risk

None of this requires taking on meaningful risk. It requires matching each portion of excess cash to an instrument that fits how soon it might be needed, the same logic large treasury teams already apply around tax cycles.

If you want to go deeper into structuring this without giving up access to your cash, this breaks it down further: How to deploy idle cash without compromising liquidity

Why this needs to be routine, not occasional

The businesses that get this right don't treat it as a one-time cleanup. They review their cash position on a set schedule and move surplus as a matter of habit, the same way large treasury desks do around tax deadlines. Doing this consistently, without it slipping once things get busy, is usually where a dedicated cash visibility tool ends up making the difference.

If keeping up with this manually isn't realistic for your team, it's worth seeing how KodoNorth handles Idle Cash Management end to end.

FAQs

1. How do I know if my cash balance counts as excess or a healthy buffer?

If it's consistently well above your operating needs and safety buffer, quarter after quarter, it's likely excess cash worth deploying rather than a buffer being actively used.

2. Do large companies really move cash in and out of mutual funds regularly?

Yes, corporate treasury desks routinely use liquid and money market funds to park cash between known obligations like tax payments, then redeem when the payment is due.

3. Is it complicated for a smaller business to do the same thing?

Not really. The same instruments, liquid funds, overnight funds, and sweep-in FDs, are accessible to businesses of most sizes, not just large corporates.

4. What's the safest way to start if I've never deployed excess cash before?

Start small, with a clearly identified surplus amount, in a liquid fund with same-day or next-day redemption, and build from there as you get comfortable with the process.

5. What happens if I need my excess cash back sooner than planned?

Instruments like liquid and overnight funds are built for exactly this. Redemptions typically process within one working day, and some liquid funds offer instant redemption on a portion of the amount, so an early exit rarely means being stuck.

6. Does keeping excess cash idle actually show up anywhere on financial statements?

Not directly as a red flag, no. It shows up indirectly, as a lower return on assets or return on capital employed, since the balance sits on the books without generating income against it. It's easy to miss unless someone's specifically looking for it.