Should you prepay business loans or invest surplus cash? A CFO’s decision guide

Few treasury decisions look as simple and are as easy to get wrong. A company carrying a term loan at 10.5% while ₹1.5 crore sits in a current account earning close to nothing is paying to hold that cash. That gap is called negative carry, and it’s one of the quieter ways idle cash costs a business money. Good idle cash management means choosing deliberately between two sensible uses of surplus, paying down debt or investing it, rather than leaving it parked while both options wait.

The right answer isn’t universal, and the rate backdrop has shifted: the RBI raised the repo rate to 5.50% on October 7, so floating-rate loans linked to the repo will reprice upward after their reset dates. This guide starts with the comparison that matters most.

The core comparison: A guaranteed saving versus an uncertain return

Prepaying a loan locks in the loan’s interest rate with certainty. Every rupee repaid stops accruing interest at that rate. A liquid fund earns a yield that is variable and not guaranteed. So the first test is simple: if the loan rate is higher than the yield you can reasonably expect, prepaying wins on arithmetic alone, before liquidity enters the picture.

An illustrative example: a company has ₹1.5 crore of genuine surplus and a ₹3 crore term loan at 10.5%. Prepaying ₹1.5 crore saves ₹15.75 lakh a year in interest. Investing it in a liquid fund yielding 6.5% earns ₹9.75 lakh. The ₹6 lakh gap favours prepayment, though these figures are examples, not guaranteed returns.

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

Tax often cancels out, but check

Interest on borrowing used for business is generally deductible, while fund gains are taxed at the corporate rate. For a company paying the same rate on both, the tax effect scales each side equally, so comparing pre-tax rates is a sound first pass. That stops holding if the company is loss-making, if the interest isn’t fully deductible, or if effective rates differ, so confirm with your tax advisor. This is general information, not financial or tax advice.

Are there prepayment charges on business loans?

It depends on who you are and what you borrowed. Since January 1, 2026, the RBI has barred lenders from charging prepayment fees on floating-rate loans taken for business purposes by individuals and micro and small enterprises, for loans sanctioned or renewed on or after that date. No charge applies on cash credit or overdraft accounts if the borrower tells the lender in advance that it won’t renew the facility.

Several cases fall outside this: fixed-rate loans, loans sanctioned before the cutoff, certain lender categories, and larger companies, which generally remain governed by their loan agreement. Check your sanction letter, since lenders are expected to state whether prepayment charges apply.

Term loans and overdrafts are different decisions

Prepaying a term loan is largely one-way. Once the principal is repaid, getting the money back means a fresh sanction. Overdrafts and cash credit work differently. Interest accrues on the daily outstanding balance, so surplus kept against the account cuts interest at the loan rate and can generally be redrawn within the limit, provided the facility is still valid. For revolving facilities, “paying down debt” and “staying liquid” often aren’t in conflict.

Protect the liquidity buffer first

Whatever the maths says, prepay only from genuine surplus, meaning cash above your reserve buffer. A business that repays debt out of its operating buffer has swapped a financing cost for a liquidity risk, and that is a harder problem to fix quickly. 

We’ve covered why liquidity deserves attention as its own dimension here: What is liquidity in investing? Why every CFO should understand it

When investing the surplus makes more sense

Investing can win when:

• The loan is cheap, such as a concessional or older fixed-rate facility, so the saving from prepaying is small.

• Prepaying triggers a charge or breaches a covenant.

• You may need the cash within months, for capex or a seasonal swing, and can’t afford to lock it into debt reduction.

A split often beats an either/or: prepay the most expensive floating-rate piece, and keep the rest invested and accessible.

What the October rate hike changes

The RBI raised the repo rate by 25 basis points to 5.50% on October 7, its first hike since February 2023, and signalled that more may follow. Floating-rate loans linked to external benchmarks like the repo typically reprice after their reset date, so the cost side of this comparison is rising. Short-term fund yields tend to rise too, but your prepayment savings move with the loan rate while a fund’s yield stays variable. If rates keep climbing, floating-rate debt becomes the more expensive side of the ledger, while older fixed-rate debt keeps its old cost.

A four-question checklist

1. Is the cash genuinely surplus after your buffer?

2. Is the loan rate above the yield you can reasonably expect?

3. Would prepaying trigger a charge or breach a covenant?

4. Is the facility revolving, so surplus can sit against it and be redrawn?

Making the call, and revisiting it

The decision isn’t permanent. Revisit it at each rate reset and whenever your surplus changes, since the right answer moves with both. We’ve covered the cost side of carrying idle cash alongside borrowing here: Why idle cash is costing your business more than you think

Treating this as a recurring review, rather than a one-time call, is what keeps the answer current as rates move.

FAQs

1. Should a company repay a loan early or invest surplus cash?

Compare the loan’s interest rate against the yield you can reasonably expect after considering liquidity. If the loan costs more than you can earn, prepaying usually wins, but only from genuine surplus above your reserve buffer.

2. Is it better to prepay a business loan or invest in liquid funds?

It depends on the loan rate, any prepayment charge, and how soon you may need the cash. A high-cost floating-rate loan favours prepayment, while a cheap loan or uncertain cash needs favour staying invested and liquid.

3. How do you compare loan interest with investment returns?

Set the loan’s interest rate against the expected yield of the investment, noting that the saving from prepaying is certain while fund yields are variable. Many companies park surplus in short-term FDs earning roughly 3-5%, while liquid mutual funds have delivered 6%+, so the investment side depends on where your cash sits now.

4. Are there prepayment charges on business loans?

Since January 1, 2026, lenders can’t charge prepayment fees on floating-rate business loans to individuals and micro and small enterprises sanctioned or renewed on or after that date. Fixed-rate loans, older loans, and larger companies may still face charges, so check your sanction letter.

5. How can a company know when it has surplus cash to prepay or invest?

Surplus builds up unnoticed between reviews. KodoNorth’s AI agent sends proactive alerts for surplus cash and upcoming payables, so the decision doesn’t depend on someone remembering to check.

6. Can a company set rules for how surplus is used?

Yes. In KodoNorth, companies can define their treasury policy and configure approval workflows, so any investment plan the AI agent generates stays within those parameters.