Note: This is an evergreen explainer. It contains no current market data and no view on where markets are heading.
Every equity investor will live through market falls, some of them deep. For SIP investors, those periods are where plans either compound or quietly come apart. What happens in a fall depends far less on the market than on what you do — and on how far along your plan you are.
Volatility is not the same as loss
Volatility is fluctuation in value. A loss becomes real when you sell below what you paid — or when you need the money during a fall. A long horizon gives prices time to recover, although recovery is not certain and can take years. This is why the horizon of each goal, not the market's mood, should decide how much volatility it carries.
What a fall does inside a SIP
For illustration, consider a SIP of ₹10,000 a month for 12 months. The NAV starts at 100, falls steadily to 70 by month six, then recovers to 100 by month twelve:
| NAV stays at 100 all year | NAV falls 30%, then recovers | |
|---|---|---|
| Total invested | ₹1,20,000 | ₹1,20,000 |
| Units bought | 1,200 | about 1,414 |
| Average cost per unit | ₹100 | about ₹84.9 |
| Value at the end (NAV 100) | ₹1,20,000 | about ₹1,41,400 |
The fall did not hurt this investor; it helped, because instalments during the fall bought more units and prices recovered by the time we measured. Had prices not recovered, the value would have been below the amount invested. Rupee-cost averaging lowers your average cost; it does not remove market risk.
The stage of your plan matters
Early in a plan, the corpus is small and most contributions are still ahead. A fall does little rupee damage and lets future instalments buy cheaply.
Late in a plan, the corpus is large and few instalments remain. A 30% fall on ₹40 lakh is ₹12 lakh, with little time left to recover before the money is needed.
That asymmetry is why goal-based plans usually shift gradually towards lower-volatility options over the final three to five years — a glide path that reduces the damage a late fall can do.
What tends to go wrong
- Stopping SIPs in a fall and restarting after a recovery — skipping the cheapest units and buying the dearest.
- Redeeming in a panic, turning a temporary fall into a permanent loss.
- Switching to whatever fell least, which often means switching away from what was positioned for the recovery.
- Checking too often. Daily values make volatility feel constant and personal.
A plan for the next fall, written in advance
- Keep an emergency fund, so you never have to sell investments to meet an urgent need — see emergency fund first.
- Know each goal's allocation and rebalance by rule, not by headline. If a fall pushes equity below target, rebalancing may mean adding to it — see asset allocation and rebalancing.
- Keep SIPs running unless your circumstances, not the market, have changed.
- Review against the goal, not the index. Ask whether the plan is still on track for its date.
- Talk it through. A conversation before acting can prevent an expensive decision — book a consultation if that would help.
Keep stepping up
Volatility is no reason to pause a planned step-up. Increasing contributions when prices are lower simply buys more units for the same rupees.
The SIP Lab shows how contributions, time and assumed returns interact — useful to look at on a calm day, so the numbers are familiar when markets are not calm.