When markets crash, your existing SIP units fall in value on paper, but every new instalment buys more units at a lower NAV — this is rupee cost averaging at work. Indian equity markets have recovered from every major crash on record and gone on to new highs, and investors who kept their SIPs running through past downturns have generally ended up better off than those who paused.
Key Facts
- After the March 2020 COVID crash, the Sensex fell from around 41,000 to a low near 25,981, then recovered to its pre-crash level in about 8 months (by November 2020) — a 58% gain from the bottom.
- After the 2008 global financial crisis, the Sensex bottomed near 8,000 and took roughly 2 years to climb back to around 21,000, a gain of about 162% from the low.
- AMFI’s monthly data shows India’s SIP “stoppage ratio” (SIPs discontinued versus new SIPs registered) has repeatedly touched or crossed 100% through 2025-2026, confirming that a large number of investors do stop or pause SIPs during uncertain markets.
- For equity mutual funds, each SIP instalment is treated as a separate purchase for tax purposes — long-term capital gains (units held over 12 months) are taxed at 12.5% above ₹1.25 lakh a year under Section 112A of the Income Tax Act.
- Every decline of 20% or more in Nifty 50’s history has eventually been followed by a full recovery and fresh all-time highs.
If you’ve ever watched your mutual fund portfolio turn red during a market fall and reached for your phone to stop your SIP, you are far from alone — AMFI’s own data shows lakhs of Indian investors do exactly this every time markets get volatile. But stopping is usually the one action that works against you. This guide walks through, in plain language and with real historical numbers, what actually happens to your SIP when the market crashes, why a falling market is mechanically different from a falling salary, and how to decide — calmly, not emotionally — what (if anything) to actually do.
| What Happens | Continued the SIP | Paused the SIP for 6 Months |
|---|---|---|
| Units bought during the fall | More units, at lower NAVs | Zero new units during the fall |
| Average cost per unit | Pulled down by crash-time purchases | Unaffected by the discount; missed it entirely |
| Behaviour required | Discipline to do nothing extra | An extra decision to restart later, at higher NAVs |
| Historical pattern (2008, 2020) | Recovered fully and captured the rebound | Recovered too, but from a higher average cost with fewer accumulated units |
| Risk introduced | Short-term paper losses, no change to the plan | Timing risk of restarting the SIP correctly |
What Actually Happens to Your SIP Money During a Crash?
Two separate things happen at once, and conflating them is where most of the panic comes from.
First, the value of units you already own falls. If your portfolio is worth ₹5 lakh and the market drops 20%, it will show closer to ₹4 lakh on your app. This is a real, visible number — but it is a notional (paper) loss, not a realised one, unless you actually sell.
Second, your next SIP instalment buys units at the new, lower NAV. The same ₹10,000 that bought, say, 100 units last month might now buy 130 units. Nothing about your fund’s underlying portfolio has changed because of the crash — you are simply acquiring a larger stake in it at a discount.
Why a Falling Market Is Mathematically Good for an Ongoing SIP
What Is Rupee Cost Averaging?
Rupee cost averaging is the mechanical effect of investing a fixed amount at regular intervals regardless of price. When the NAV is high, your fixed instalment buys fewer units; when the NAV is low, it buys more. Over a full cycle of fall and recovery, this pulls your average cost per unit below the average NAV over that period — which is why a portfolio that includes a crash can sometimes recover to profit faster than one that didn’t.
Suppose an investor runs a ₹10,000 monthly SIP in a diversified equity fund starting at a NAV of ₹100. Over the next few months the NAV falls to ₹70 as markets correct, then climbs back to exactly ₹100 by month six.
- Total invested over 6 months: ₹60,000
- Because several instalments bought units at NAVs between ₹70 and ₹100, the investor accumulates more units than if the NAV had simply stayed flat at ₹100 throughout
- When the NAV returns to exactly ₹100, the portfolio is worth more than the ₹60,000 invested — a gain purely from the averaging effect, even though the fund merely returned to where it started
Compare this to a lump-sum investor who put the full ₹60,000 in at ₹100 NAV on day one: when the NAV returns to ₹100, that investor is back to exactly ₹60,000 — no gain, no loss. The SIP investor who stayed invested through the dip ends up ahead, purely because of the averaging mechanic, not because of any market prediction.
What History Shows: How Indian Markets Recovered From Past Crashes
This is not a one-off pattern. As per publicly available Sensex data on India’s two largest market shocks in the last two decades:
| Crash | Approx. Bottom | Time to Recover to Pre-Crash Level | Gain From Bottom (to recovery) |
|---|---|---|---|
| Global Financial Crisis, 2008 | Sensex ~8,000 | ~2 years (to ~21,000) | ~162% |
| COVID-19 Crash, March 2020 | Sensex ~25,981 | ~8 months (by Nov 2020) | ~58% |
As per this data, every 20%+ decline in Nifty 50’s history has, so far, eventually been followed by a full recovery and fresh highs — the Sensex went on to touch record levels years after both events above. Past recoveries do not guarantee future ones, and no one — including us — can predict how long any specific future downturn will take to recover. The pattern is offered as context, not as a promise.
Why Do Investors Panic and Stop SIPs Anyway?
If the math favours staying invested, why does AMFI’s data consistently show large numbers of SIPs being discontinued during volatile phases? The honest answer sits in behavioural finance, not arithmetic.
Loss Aversion
Humans feel the pain of a loss roughly twice as intensely as the pleasure of an equivalent gain. A portfolio showing red triggers a stronger emotional response than the quieter, slower benefit of buying more units cheaply.
Confusing a Falling Portfolio With a Failing Plan
A 20-30% fall in portfolio value feels like something has gone wrong, when in most cases it simply reflects broad market movement that every diversified equity investor is experiencing at the same time.
Recency Bias
During a crash, the most recent, vivid information (falling prices) dominates decision-making far more than the less immediate historical pattern of recovery.
This is exactly why AMFI’s SIP stoppage ratio — the number of SIPs discontinued compared with new SIPs registered — has repeatedly moved above 75-100% in recent AMFI monthly data through 2025-2026, even during periods when total SIP contributions and SIP AUM continued to grow. Some of that stoppage reflects investors completing a fixed SIP tenure or hitting a goal, which is normal and healthy — but a meaningful share also reflects investors reacting to short-term volatility rather than a change in their actual financial goal.
The Real Cost of Pausing Your SIP During a Downturn
Pausing a SIP during a fall does two things simultaneously: it stops you from buying the discounted units that make rupee cost averaging work, and it introduces a new decision you now have to get right — when to restart. Investors who restart only after the market has visibly recovered end up buying back in at higher NAVs than the ones they walked away from, having given up both the cheap units and the compounding time on those missed instalments. This is the single most common way disciplined long-term plans quietly underperform their own potential — not through a bad fund choice, but through a well-intentioned pause at exactly the wrong moment.
Should You Ever Actually Change Your SIP During a Crash?
“Never touch your SIP” is a useful rule of thumb, not an absolute law. There is a meaningful difference between reacting to market noise and responding to a genuine change in your own situation.
Reasons that usually do NOT justify stopping
- The market fell and your portfolio value dropped
- News headlines are alarming
- A friend or colleague says they’ve paused theirs
Reasons that MAY genuinely justify a pause or change
- A real, ongoing change in your monthly cash flow (job loss, reduced income)
- The goal the SIP was funding is now only 1-2 years away, and your asset allocation needs to shift toward safety regardless of market conditions
- You are significantly over-exposed to one fund category and need to rebalance — a planning decision, not a panic decision
If any of the second set applies, that’s a conversation for a financial advisor, not a solo decision made while looking at a falling portfolio value on your phone.
How a Crash Can Affect What You Owe in Tax
One underappreciated angle: each SIP instalment has its own purchase date for tax purposes, and gains are computed instalment-by-instalment (FIFO) at redemption. For equity mutual funds, long-term capital gains (on units held over 12 months) above ₹1.25 lakh in a financial year are taxed at 12.5% under Section 112A; gains on units held 12 months or less are taxed at 20% as short-term capital gains under Section 111A. A crash doesn’t change these rates, but units you buy cheaply during a downturn can, over time, mean a larger proportion of your eventual gain — so this is a case where it helps to plan redemptions with your advisor rather than redeeming in one lump sum without checking the holding period of each instalment.
A Simple Crash Checklist
- Check whether your actual financial goal or timeline has changed — not just your portfolio value
- Resist checking your portfolio daily during high volatility; it amplifies the emotional reaction without adding useful information
- If cash flow allows, consider whether a step-up SIP or a lump-sum top-up (only from money you don’t need in the short term) makes sense at lower NAVs
- Revisit your asset allocation only in the context of your goals, not in reaction to a single bad week
- Talk to your advisor before pausing — a five-minute conversation can prevent a decision that costs years of compounding
Frequently Asked Questions
Does my SIP amount reduce automatically when the market crashes?
No. Your SIP debits the same fixed amount from your bank account every month regardless of market levels — a crash changes how many units that amount buys, not the amount itself.
Will I lose all my money if the market crashes right after I invest?
Not unless you sell during the fall. A crash reduces the current market value of your holdings, but historically, Indian equity markets have recovered from every major decline and gone on to new highs, though the timeline for any future recovery cannot be guaranteed.
Should I stop my SIP when the market is falling?
In most cases, no — continuing through a fall is what allows rupee cost averaging to lower your average cost per unit. Consider pausing only if your own cash flow or goal timeline has genuinely changed, not because the market fell.
Is it a good idea to invest extra money when the market crashes?
A lump-sum top-up during a fall can work well for investors with surplus funds they don’t need in the short term and an appetite for the extra volatility, but it should be sized to your overall asset allocation and goals, not done impulsively.
How long does it usually take for the Indian market to recover from a crash?
It varies significantly by event — the market took about 8 months to recover its pre-crash level after the 2020 COVID crash, and roughly 2 years after the 2008 global financial crisis. Every situation is different, and no fixed recovery time can be guaranteed for a future crash.
Does a market crash affect the tax I pay on my SIP later?
Indirectly. Each SIP instalment has its own purchase date, and units bought cheaply during a crash can affect your average cost and eventual gain calculation. The tax rates themselves (12.5% LTCG above ₹1.25 lakh/year, 20% STCG, for equity funds) stay the same regardless of when you bought.
What’s the difference between a notional loss and a real loss in my SIP?
A notional (paper) loss is simply your portfolio’s current value being lower than what you invested — it exists only on your statement. It becomes a real, realised loss only if you actually sell your units at that lower value.
Watching your SIP through a market fall is easier with a plan built for your actual goals — not just the market’s mood. Talk to Deepak Wealth Framework for a goal-based review of your SIPs.
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