XIRR Auditor
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Calculate the future value of a systematic monthly investment (SIP / DCA). See how much wealth compounding creates on top of your contributions — and how your rate compares to a passive index fund.

SIP parameters
$

Amount invested each month

%

Expected annual return

$

Investment horizon

What is SIP / DCA?

A Systematic Investment Plan (SIP) or Dollar-Cost Averaging (DCA) means investing a fixed amount at regular intervals — monthly, weekly, or quarterly — rather than all at once. It removes the need to time the market and smooths out entry prices.

The power comes from compounding: earlier payments have more time to grow, and market gains generate their own gains over successive periods.

Why SIP XIRR is not the same as return rate

When you invest monthly, each instalment grows for a different duration. The XIRR (money-weighted return) accounts for this timing precisely — it is the single annualized rate that equates all your outflows and your final portfolio value. For a regular SIP at a constant rate, XIRR ≈ that rate, but real-world variation in dates and amounts will shift it.

Upload your brokerage export to see the real number — not an assumed one.

Frequently asked questions

What return rate should I use?

Use 10% for a broad US equity index fund (historical SPY average), 12–15% for a more optimistic equity scenario, or 4–5% for a conservative bond/savings scenario.

Does this account for taxes?

No — this is a gross return calculator. Your after-tax return depends on your bracket, account type (taxable vs Roth vs IRA), and holding period.

What is the difference between SIP and lump sum?

In a steadily rising market, lump sum typically outperforms SIP because all your capital has maximum time to grow. SIP reduces timing risk and volatility drag — useful when you cannot invest a large sum upfront.

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