What is XIRR?
XIRR (Extended Internal Rate of Return) is the annualised return across cash flows that happen on arbitrary dates. Where IRR assumes evenly spaced periods, XIRR reads the calendar: a SIP on the 3rd of every month, a Diwali top-up, and an emergency redemption in March all enter the maths from their actual dates.
It answers one question precisely: given exactly when my money went in and came out, what constant annual rate explains the result?
Why your MF statement uses XIRR
A SIP is 60 or 120 separate investments, each with a different holding period. The rupee you invested five years ago has compounded through two corrections and a rally; the rupee from last month has barely lived. Any single "return %" that ignores this timing is wrong in one direction or the other:
- Absolute return ("₹12 L became ₹18 L, so 50%") ignores time entirely — 50% over four years is unremarkable; over ten it is poor.
- The fund's advertised CAGR describes one lumpsum held the whole period — nobody's SIP experience.
- XIRR weights every rupee by its actual time in the market. That is why CAMS, KFintech and every fund statement report it.
Reading the number honestly
A few things worth knowing before you act on an XIRR figure:
- Young SIPs swing wildly. Six months of instalments through a correction can show a −20% XIRR that means almost nothing about the decade ahead. XIRR stabilises as history accumulates.
- It is portfolio-specific, not fund-specific. Your XIRR in a fund can be better or worse than the fund's own CAGR purely because of when you happened to invest. Neither number is "wrong".
- Compare like with like. Comparing your equity XIRR to an FD rate is fair; comparing a 9-month XIRR to a 10-year FD rate is not.
XIRR vs IRR, in one line
Use XIRR when the dates matter (real MF portfolios); use IRR when cash flows come in clean yearly steps (a business plan, a rental property model).