SIP or FD for business savings

The question that actually decides it

Not which gives a better return. The question is: what happens if this money is worth 25 percent less on the day I need it?

If the answer is that you would delay a purchase, that is tolerable. If the answer is that you could not pay salaries or an advance tax instalment, then no expected return justifies the risk, because the whole point of that money was that it would be there.

Everything else follows from that.

What each one actually is

A fixed deposit is a loan you make to a bank at an agreed rate for an agreed term. The return is contractual. You know the maturity amount the day you open it, and barring the bank failing, that is what you get. Deposits are insured up to ₹5,00,000 per depositor per bank by DICGC.

A SIP is not a product at all. It is a schedule for buying into a mutual fund every month. The return depends entirely on what the fund holds. An equity SIP can compound well over long periods and can also be down 30 percent when you look at it.

People compare "SIP returns" against "FD rates" as though they are the same kind of number. They are not. One is a contract and the other is a projection.

The numbers, so the trade off is concrete

₹50,000 a month for five years, which is ₹30,00,000 invested.

Where	Assumption	Value after 5 years
Recurring deposit	6.8% fixed	about ₹35,77,700
Equity SIP	12% average	about ₹41,24,300
Equity SIP	8% average	about ₹36,98,300
Equity SIP	bad five year run	could be below ₹30,00,000

The 12 percent case is roughly ₹5,46,600 ahead of the deposit. That is a real difference and worth having. But look at the last row. Five years is short enough that an equity SIP can finish below what you put in, and that has happened to people who started at the wrong moment. Over five years the range of outcomes is wide.

Stretch the same monthly amount to fifteen years and the picture changes character entirely. ₹50,000 a month at 12 percent becomes roughly ₹2,52,28,800 against ₹90,00,000 invested. At 8 percent it is roughly ₹1,74,17,300. Even the pessimistic case is far ahead of a deposit, and the probability of ending below your invested amount over fifteen years is much smaller. Time is what converts equity from a gamble into a reasonable expectation.

The tax difference, which is larger than people expect

This is where a like for like rate comparison misleads badly.

Deposit interest is added to your income and taxed at your slab rate, every year, whether or not you withdraw it. In the 30 percent bracket, a 6.8 percent deposit returns about 4.76 percent after tax. Against inflation, that is close to standing still.

Equity fund gains are taxed only when you sell, so the money compounds gross for years, and long term gains are taxed under their own regime rather than at your slab rate. Rules here have changed more than once recently, so check the current position, but the structural point holds: deferred tax on gains beats annual tax on interest, and the gap widens the longer you hold.

The practical consequence is that comparing 6.8 against 12 understates the difference over long periods. Comparing after tax and after the compounding effect of deferral, the gap is wider still.

How to actually split it, for a business

The useful frame is not choosing one. It is sorting your money by when you need it.

1. Operating buffer, three to six months of costs. Sweep account or short deposits you can break. Not a SIP, ever. This money's job is to be available on a bad Tuesday, and it will not be if it is down 20 percent.
2. Known commitments in the next two years. Advance tax, a planned equipment purchase, a deposit on premises. Fixed deposits or recurring deposits timed to mature when you need them. The certainty is the product.
3. Two to five years out. Mostly deposits or debt funds. Some equity if you have genuine flexibility on timing.
4. Beyond five years, money with no assigned job. This is where a SIP earns its place. Long enough for volatility to matter less, and the tax treatment works in your favour.

For a small business in India, I would be reluctant to put working capital anywhere market linked, whatever the projections say. Cash flow lumpiness is the thing that kills small businesses, and a buffer that has to be explained to your bank at the wrong moment is not a buffer.

A note on business structure

If you are a sole proprietor, the business money is your money and this is straightforwardly a personal investment decision. If you operate through a company, investing company funds has its own tax treatment and compliance implications, and the answer may be to distribute and invest personally instead. Ask your accountant before moving company money into funds.

Three mistakes worth avoiding

• Stopping a SIP because it fell. This converts a paper loss into a real one and forfeits the recovery. If a fall would make you stop, the money should not have been there.
• Breaking a long deposit early. You get the rate for the period actually completed, minus a penalty, not the rate you signed for. Splitting one large deposit into several smaller ones lets you break only what you need.
• Treating a five year SIP like a fifteen year one. Most disappointment with equity SIPs comes from a horizon too short for the strategy, not from picking the wrong fund.

Run your own version

The SIP calculator and the FD calculator take your actual numbers. Do one thing with them: run the SIP at 8 percent as well as 12. The gap between those two figures is the honest range, and planning around the lower one is rarely regretted.

This is general information and not investment advice. I am not a registered adviser. Market linked investments can lose value, and past returns tell you very little about future ones.

Common questions

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Written by Khanjan Kavani, who builds software in Surat and writes these to answer the questions clients keep asking. Found a mistake? Tell me at hello@khanjankavani.com and I will correct the article itself.

General information, not professional advice. Rules in India change. Check anything important against the current position or a qualified professional. See the disclaimer.