What Is a SIP Calculator?
A SIP (Systematic Investment Plan) Calculator helps Indian investors estimate the future value of regular monthly investments in mutual funds. By inputting your monthly SIP amount, expected annual return, and investment tenure, the calculator instantly projects your corpus using the power of compounding.
SIP is the most popular investment route in India for retail investors, endorsed by SEBI and AMFI. AMFI data shows India's monthly SIP contributions crossed ₹26,000 crore in 2025, reflecting growing investor confidence in disciplined investing.
SIP Return Formula
The future value of a SIP is calculated using the compound interest formula for recurring investments:
FV = P × [((1 + r)^n − 1) / r] × (1 + r)
Where: P = Monthly investment amount, r = Monthly rate of return (annual rate ÷ 12), n = Number of monthly instalments.
For example, a ₹10,000/month SIP over 15 years at 12% annual returns gives a corpus of approximately ₹50.5 lakh on a total investment of ₹18 lakh — a wealth gain of over ₹32 lakh from compounding alone.
Step-Up SIP: Align Investments with Income Growth
A Step-Up SIP (also called Top-Up SIP) automatically increases your SIP amount each year by a fixed percentage — typically 10–15% to match salary hikes. This dramatically improves your final corpus without requiring a large upfront commitment.
| SIP Type | Monthly Amount | Corpus at 20 yrs (12% p.a.) |
|---|---|---|
| Regular SIP | ₹10,000 | ₹99.9 lakh |
| Step-Up SIP (10%/yr) | ₹10,000 → ₹67,275 | ₹1.98 crore |
SIP Taxation in India (2026)
- Equity Mutual Funds (LTCG): Gains above ₹1.25 lakh held over 1 year are taxed at 12.5% (revised in Union Budget 2024).
- Equity Mutual Funds (STCG): Gains on units redeemed within 1 year are taxed at 20%.
- ELSS Funds: Investments up to ₹1.5 lakh qualify for deduction under Section 80C, with a 3-year lock-in.
- Debt Mutual Funds: Gains are taxed as per your income tax slab (added to income) regardless of holding period since April 2023.
Tips to Maximise SIP Returns
- Start early — even ₹500/month at age 22 outperforms ₹5,000/month starting at 35.
- Never pause SIPs during market downturns — buying at lower NAV improves average cost.
- Review fund performance annually; switch to better-performing funds if consistently underperforming.
- Increase SIP amount by at least 10% every year (Step-Up).
- Diversify across large-cap, mid-cap, and flexi-cap funds.