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Lesson 2.2 · 3 min read

How Much to Invest

The oxygen mask rule

On a plane, you put on your own oxygen mask first. In investing, build your emergency fund first, then invest. You can't build wealth if a medical emergency forces you to sell at a loss.

How Much to Invest

The 50-30-20 Rule

50% 30% 20% Needs Wants Invest
A simple budgeting framework:
  • 50% — Needs (rent, groceries, EMIs)
  • 30% — Wants (dining, entertainment, shopping)
  • 20% — Savings & Investments
If your take-home salary is ₹50,000/month, at least ₹10,000 should go to investments.

Before You Invest: Emergency Fund First

Keep 6 months of expenses in a liquid fund or savings account before starting equity SIPs. This ensures you won't have to sell your equity investments during a crisis. Example: Monthly expenses ₹30,000 → Emergency fund = ₹1,80,000.

Age-Based Equity Allocation

A rough rule of thumb: Equity % = 100 - Your Age

Age 25 75% 25% Age 35 65% 35% Age 45 55% 45% Age 55 45% 55% Equity Debt
AgeEquityDebt
2575%25%
3565%35%
4555%45%
5545%55%
This is a starting point, not a strict rule. Adjust based on your risk tolerance and goals.

1

Build your emergency fund (6 months of expenses)

2

Start a SIP with whatever you can afford — even ₹500/month

3

Increase your SIP by 10% every year (step-up SIP)

4

As your income grows, push toward the 20% savings target

The Power of Step-Up SIP

A ₹5,000 SIP with 10% annual step-up for 20 years at 12% return = ₹76 lakh. Without step-up, the same SIP gives only ₹49.9 lakh. That's ₹26 lakh extra just by increasing ₹500/year.

Common Mistake

Waiting for the "perfect time" or "enough money" to start. Time in the market beats timing the market. ₹500/month started today beats ₹5,000/month started 5 years later.

Your Next Step

Use our SIP Calculator to model different amounts and see how step-up SIP multiplies your wealth.

Mutual Fund investments are subject to market risks, read all scheme related documents carefully. Past performance is not indicative of future returns.