What happens to your SIP during a market crash?

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• SIPs continue as usual during market crashes, buying more units
• Stopping SIPs in downturns can harm long-term returns
• SIPs help manage entry risk but are not for short-term goals

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When markets fall sharply, SIP investors often panic not because the system breaks, but because the numbers look uncomfortable. You check your portfolio and see red everywhere. Units you bought months ago are suddenly worth less. It feels like something has gone wrong. In reality, a market crash does not disrupt how a SIP functions. It exposes whether you truly understood why you started one in the first place.

Your SIP does not stop or change automatically

A market crash does not pause your SIP, alter the fund strategy, or change how units are allotted. On the scheduled date, your SIP amount is invested exactly as usual. The only difference is the NAV. When markets fall, NAVs drop, and the same SIP amount buys more units.

This is not a theoretical benefit. It is a mechanical one. Lower prices mean higher unit accumulation. Over time, this lowers your average purchase cost, provided you stay invested.

Why your portfolio value looks worse before it gets better

During a crash, earlier SIP instalments show losses because they were bought at higher NAVs. That is unavoidable. What often gets overlooked is that recent and upcoming instalments are being deployed at cheaper valuations.

If markets remain volatile for a sustained period, a large portion of your total units end up being accumulated during this lower range. When markets recover, these units contribute disproportionately to returns. This is why long-term SIP returns are often driven by investments made during bad phases, not good ones.

Stopping SIPs usually locks in the wrong behaviour

Many investors stop SIPs during crashes because they feel they are throwing good money after bad. In practice, stopping a SIP during a downturn freezes your average cost at a higher level. You stop buying when assets are cheap and resume only after confidence returns, which is usually when prices are higher.

This behaviour converts a volatility problem into a return problem. The SIP itself did not fail. Discipline did.

What if the crash lasts longer than expected

Extended bear markets test patience. SIPs are not designed to protect short-term capital. They are designed to manage entry risk over long horizons.

If your investment goal is less than three to five years away, the issue is not the crash. It is an asset mismatch. Equity SIPs are unsuitable for short-term goals, regardless of market conditions. For long-term goals, time is the shock absorber.

Should you increase SIPs during a crash

Increasing SIP amounts during a crash can work well if your income is stable and your emergency fund is intact. It allows you to accelerate unit accumulation at lower prices. However, this should not be confused with trying to time the bottom.

A temporary SIP top-up during deep corrections is sensible only if it does not strain monthly cash flows. Forced reversals later can undo the benefit.

What stays unchanged during a crash

Your fund’s mandate does not change. The underlying businesses do not disappear overnight. Volatility reflects changing sentiment and uncertainty, not immediate destruction of long-term value across the board.

Crashes feel dramatic because prices move faster than fundamentals. SIPs exist precisely to handle this mismatch between emotion and reality.

Bottom line

During a market crash, your SIP does not protect you from short-term losses. It protects you from poor timing decisions. It keeps you invested when instinct tells you to stop, and it buys more when prices are lower, not higher.

The real risk to a SIP is not a market crash. It is abandoning the process midway.