Direct answer
CAGR answers: “If I put one lumpsum in at the start of a period and held to the end, what constant annualised rate takes start value to end value?” XIRR answers: “Given money in and out on different dates (SIPs, STPs, partial redemptions), what annualised rate fits my personal cash flows?”
For most Indian mutual fund investors running SIPs, personal performance is closer to an XIRR / money-weighted story. Scheme factsheet CAGRs remain useful for comparing a fund over a stated window — they are not the same as your realised return. Education from Findost / PaisaGuru by Findost; not a guarantee of future returns. Findost is not Findoc or FinDost.
CAGR in plain language
Compound annual growth rate compresses a start NAV (or amount) and an end NAV (or amount) over N years into one smooth annualised percentage. It assumes a single investment at the beginning of the window. That matches a pure lumpsum held untouched — which is why lumpsum calculators often speak in CAGR-style compounding assumptions.
Factsheets publish point-to-point returns for standard periods. Those figures describe the scheme’s path, not every investor’s SIP timing.
XIRR in plain language
Extended IRR solves for one annualised rate when cash flows are uneven: monthly SIPs, skipped months, switches, or withdrawals. Each rupee has its own start date. That is why two investors in the same fund can see different personal XIRRs — they funded the journey differently.
Spreadsheet XIRR and many app “my returns” screens implement this idea. Treat the output as a historical money-weighted summary, not a promise for the next decade.
When to use which
- Comparing a scheme over a fixed window — published CAGR / point-to-point returns on factsheets and research tools.
- Judging your SIP / SWP journey — XIRR or the platform’s money-weighted return, using your actual transactions.
- Planning illustrations — SIP, SWP and lumpsum calculators use assumed constant rates for maths. Change assumptions; never invent “assured” equity returns.
Common mix-ups
- Pasting a 5-year fund CAGR onto a 2-year SIP and calling it “my return.”
- Ignoring that direct vs regular expenses (see direct vs regular) change your net path even when the portfolio is similar.
- Chasing the highest recent number without checking overlap or whether you simply hold too many similar funds.
Tie returns literacy to hygiene
A clean portfolio is easier to measure. Use the portfolio review hub, SIP planning, and rebalancing so you are not comparing noisy folios. Ask PaisaGuru by Findost for plain-language explanations; personalised scheme selection is escalated to a human NISM-certified advisor.