SIP Calculator

Last updated: June 2026 · Reviewed by editorial team

Use this SIP calculator to project the future value of your monthly Systematic Investment Plan in mutual funds. Enter your monthly contribution, expected annual return rate and investment tenure — the calculator instantly shows your final corpus, total amount invested, and wealth gain (the returns you earn on top of your contributions).

This mutual fund SIP calculator uses the standard compound-interest formula that assumes monthly compounding at the rate you enter. Returns from equity mutual funds in India have historically averaged 12-15% per year over 10+ year periods, while debt funds have delivered around 7-8%. Use realistic return assumptions based on the fund category you're investing in. The optional step-up SIP feature lets you model annual increases in your contribution, which can substantially boost your final corpus.

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How this calculator works

What is an SIP?

A Systematic Investment Plan (SIP) is a method of investing in mutual funds where you deposit a fixed amount every month — typically through an auto-debit from your bank account. Each instalment buys mutual fund units at the prevailing Net Asset Value (NAV). When markets are down, the same amount buys more units; when markets are up, it buys fewer. Over years, this rupee cost averaging smooths out market volatility and reduces the risk of bad timing.

The SIP formula

The future value of a regular monthly SIP is calculated using the compound interest formula for an annuity:

FV = P × [((1 + r)^n − 1) / r] × (1 + r)
Where: P = monthly investment, r = monthly rate of return (annual rate ÷ 12), n = total number of months

For example, ₹10,000 monthly SIP for 20 years at 12% annual return becomes: P = 10000, r = 12/12/100 = 0.01, n = 240. FV ≈ ₹99,91,479 — almost ₹1 crore from a total investment of just ₹24 lakh. The remaining ₹76 lakh is pure compound growth.

Why time matters more than the monthly amount

Compounding rewards time exponentially. Two scenarios at 12% annual return:

  • ₹10,000/month for 20 years: ₹24 lakh invested → ₹1 crore corpus (4.2× money)
  • ₹20,000/month for 10 years: ₹24 lakh invested → ₹46 lakh corpus (1.9× money)

Same total contribution, but the longer-tenure SIP generates more than double the wealth. Starting early — even with a small amount — beats starting late with a larger amount.

Step-up SIP — the underused growth lever

A step-up SIP increases your monthly contribution by a fixed percentage every year, typically matching your expected salary growth. Even a modest 10% annual step-up dramatically boosts your final corpus.

Example: ₹10,000/month for 20 years at 12% return:

  • Without step-up: corpus ≈ ₹1 crore
  • With 10% annual step-up: corpus ≈ ₹2.05 crore — more than double

The reason: in the first year you contribute ₹1.2 lakh; in year 20 you're contributing ₹6 lakh annually. Total invested rises from ₹24 lakh to ~₹70 lakh, and that extra capital compounds.

Realistic return expectations

Use category-appropriate return assumptions:

  • Large-cap equity funds: 11-13% historical CAGR
  • Mid-cap and small-cap funds: 13-16% historical CAGR (with higher volatility)
  • Multi-cap / flexi-cap funds: 12-14%
  • Index funds (Nifty 50, Sensex): 11-12%
  • Hybrid (equity-debt) funds: 9-11%
  • Debt funds: 6-8%

These are long-term averages. Short-term returns can vary wildly — equity funds have lost 20-30% in single years (2008, 2020) and gained 50%+ in others. SIP works best with a 7+ year horizon to ride out market cycles.

Tax on SIP returns

Equity-oriented mutual funds (65%+ in Indian equity): Long-term capital gains (held over 12 months) taxed at 12.5% above ₹1.25 lakh annual exemption. Short-term gains taxed at 20%. Debt funds (post-April 2023 purchases): all gains taxed at slab rate regardless of holding period — no indexation benefit.

Worked example

Example 1 — ₹5,000/month for 15 years at 12% return:

  • Total invested: ₹9,00,000 (₹5,000 × 180 months)
  • Future value: ₹25,22,880
  • Wealth gain: ₹16,22,880 (1.8× the amount invested)
  • Effective annualised return: 12.0% (matches input)

Example 2 — ₹15,000/month for 20 years at 13% (mid-cap fund) with 10% step-up:

  • First year contribution: ₹1.8 lakh; final year contribution: ₹10.5 lakh
  • Total invested over 20 years: ₹1.03 crore
  • Future value: approximately ₹3.15 crore
  • Wealth gain: ₹2.12 crore

Example 3 — Retirement planning, ₹20,000/month for 25 years at 12%:

  • Total invested: ₹60,00,000
  • Future value: ₹3,79,29,000 (₹3.79 crore)
  • Wealth gain: ₹3.19 crore
  • This single SIP can fund retirement for someone starting at age 35.

Frequently asked questions

Is SIP calculator accurate?

The math is exact, but the projection depends on the return rate you enter. Future returns are uncertain. Use historical averages adjusted downward for safety: 11-12% for large-cap, 13-14% for mid/small-cap, 7-8% for debt funds. The calculator output is a planning estimate, not a guarantee.

What is the minimum SIP amount?

Most mutual funds in India accept SIPs starting from ₹500/month, with some starting as low as ₹100/month. There is no upper limit. Many investors start small and increase contributions as their income grows — exactly what the step-up SIP option models.

Can I change or stop my SIP anytime?

Yes. You can pause an SIP for up to 6 months, increase or decrease the amount, change the frequency, or stop it entirely without any exit penalty (most funds). Equity funds and most categories have no lock-in. Only ELSS (tax-saver) funds have a mandatory 3-year lock-in per instalment.

SIP vs lumpsum — which gives better returns?

Mathematically, lumpsum wins about 70-75% of the time over long periods because more money is invested earlier and compounds longer. But SIP wins in volatile or falling markets through rupee cost averaging. For most investors who don't have ₹10+ lakh sitting idle, SIP is the realistic and behaviorally easier choice. SIPs also enforce discipline — you don't try to time the market.

What is the difference between SIP and STP?

SIP (Systematic Investment Plan) transfers money from your bank account to a mutual fund. STP (Systematic Transfer Plan) transfers money from one mutual fund to another — typically from a debt fund to an equity fund over months. STP is useful when you receive a lumpsum (bonus, inheritance) and want to deploy it gradually into equities.

Are SIP returns guaranteed?

No. Mutual funds carry market risk. Equity funds can fall 20-40% in a bad year. Debt funds can also fluctuate, especially with interest rate changes. The 12% expected return is a long-term average — actual year-to-year returns vary widely. Only government schemes like PPF (7.1%) or post office FDs offer guaranteed returns.

Is SIP eligible for 80C tax deduction?

Only if you invest in an Equity Linked Savings Scheme (ELSS) — these are mutual funds with a 3-year lock-in that qualify for the ₹1.5 lakh 80C deduction in the old tax regime. Regular SIPs in non-ELSS funds do not qualify for any tax deduction. Under the new tax regime, no SIP qualifies for 80C — only employer NPS contribution remains deductible.

How is SIP taxed at withdrawal?

Each SIP instalment is treated as a separate purchase with its own holding period. When you redeem, FIFO (first-in-first-out) applies. Equity funds: held over 12 months = LTCG at 12.5% above ₹1.25L annual exemption; under 12 months = STCG at 20%. Debt funds bought after April 2023: all gains at slab rate, no indexation.

What is XIRR vs CAGR for SIP?

CAGR assumes a single lumpsum invested at the start — not appropriate for SIPs where money is invested over time. XIRR (Extended Internal Rate of Return) is the correct measure for SIPs — it calculates the time-weighted annualised return considering each instalment's actual investment date. Use XIRR when comparing your actual SIP performance with expected returns.

Should I do SIP in direct or regular plans?

Always direct plans if you're comfortable choosing funds yourself. Direct plans have a lower expense ratio (typically 0.5-1% lower than regular), which compounds significantly over 20 years. On a ₹10,000/month 20-year SIP, the difference can be ₹15-25 lakh. Use platforms like Coin, Groww, Kuvera, or directly through AMC websites for direct plans.

How many SIPs should I have in my portfolio?

For most investors, 3-5 well-chosen funds covering different categories is ideal. A simple goal-based portfolio: one large-cap or index fund for stability (40% allocation), one flexi-cap or multi-cap for diversification (30%), one mid/small-cap for higher growth potential (20%), one debt or hybrid fund for cushion (10%). Holding more than 7-8 funds rarely improves returns and complicates tracking. Avoid overlap — don't pick three large-cap funds with the same top-10 holdings.

What is the right SIP amount based on my income?

A common rule of thumb is to invest 20-30% of post-tax income in long-term investments, with SIPs forming the bulk. If your monthly take-home is ₹80,000, target ₹15,000-25,000 in SIPs. Start with whatever is comfortable — even ₹2,000-5,000 monthly builds the habit and compounds materially over 20 years. Increase contributions with every salary hike using the step-up SIP feature in this calculator.