Monthly SIP of ₹ 4,000 on salary of ₹ 30,000: How much fund will be created in 10 and 20 years, understand the complete mathematics

At the beginning of a job or in times of limited income, people often assume that saving lakhs of rupees is necessary to create a big fund. The reality is that financial success does not depend on how big your salary is, but on how much of your earnings you invest in the right place with discipline. If your monthly salary is Rs 30,000 and you invest only Rs 4,000 (about 13.3% of your salary) every month in a Mutual Fund Systematic Investment Plan (SIP), then with the power of compounding, you can create a fund worth lakhs and crores in the coming years.

Historically, an average annual compound return (CAGR) of 12% over the long term (10 to 20 years) has been considered a practical and realistic standard in equity mutual funds. Let us understand the exact calculation of the entire fund to be created over 10 year and 20 year time horizon based on 12% annualized expected return.

If you continue regular SIP of ₹4,000 every month without any break for the next 10 years (120 months), your wealth creation at a possible average return of 12% will be as follows:

• Monthly Investment: ₹4,000

• Time period: 10 years (120 installments)

• Total funds deposited from your pocket: ₹4,80,000 (₹4.80 lakh)

• Estimated profits from compounding: ₹4,49,615 (approximately ₹4.50 lakh)

• Total potential funds after 10 years: ₹9,29,615 (approximately ₹9.30 lakh)

Over a period of 10 years your accumulated fund reaches almost double your original deposit amount. This fund proves to be a strong foundation for children’s early schooling, paying off any old debt or building an emergency security fund.

The real magic of SIP starts after 10 years, which is called the ‘snowball effect of compounding’. If you continue the same EMI of ₹4,000 for the next 20 years (240 months):

• Monthly Investment: ₹4,000

• Time period: 20 years (240 installments)

• Total funds deposited from your pocket: ₹9,60,000 (₹9.60 lakh)

• Estimated profits from compounding: ₹30,36,580 (approximately ₹30.37 lakh)

• Total potential fund after 20 years: ₹39,96,580 (approximately ₹40 lakh)

Note that between 10 years and 20 years, your original corpus increased by only ₹4.8 lakh, but your total corpus jumped from ₹9.3 lakh to almost ₹40 lakh. This means that on the ₹9.6 lakh deposited by you, you got a net profit of more than ₹30 lakh just because of the interest earned on the interest.

As your experience in the job increases, your salary of Rs 30,000 will also increase in increments every year. If instead of keeping your SIP fixed at just ₹4,000 for the entire 20 years, you 10% annual increase (Step-Up SIP) We do:

• Monthly installment for the first year: ₹4,000

• Monthly installment for second year: ₹4,400

• EMI for the third year: ₹4,840 (and so on)

With this simple 10% step-up rule, your total corpus in 20 years will be around ₹27.48 lakh, but your total maturity fund will grow to around ₹75.80 lakh will reach. That means without any additional huge burden, you can create a wealth corpus of around ₹35 lakh more than a normal SIP.

Follow these three rules to continue regular SIP every month without any stress in limited salary:

1. Auto-debit as soon as salary arrives (Pay Yourself First): Don’t make the mistake of investing what is left at the end of the month. Set your SIP date just next day after your salary (like 3rd or 5th) so that the savings get deducted automatically.

2. Choosing the right funds (Diversification): Instead of investing ₹4,000 in a single fund, divide it into two parts—say ₹2,500 in a large or flexi-cap fund (for stability) and ₹1,500 in a mid-cap or multi-asset fund (for growth).

3. Backup of emergency fund: As you start investing, keep a liquid backup of at least 2 to 3 months’ expenses (about ₹ 40,000 to ₹ 50,000) in your savings account, so that your SIP does not get interrupted in case of any sudden need.