Open a portfolio dashboard and you may see more than one return figure. That is intentional. CAGR and XIRR answer related but distinct questions — and misunderstanding them can make a healthy portfolio look confusing, or a mediocre one look better than it is.
What CAGR tells you
Compound Annual Growth Rate (CAGR) expresses how an investment would have grown if it compounded smoothly from a starting value to an ending value over a period. It ignores the timing of cashflows in between. For a lump-sum purchase held for five years, CAGR is a clean summary of growth.
What XIRR tells you
Extended Internal Rate of Return (XIRR) is money-weighted. It considers when you invested and when you withdrew — including SIPs, partial redemptions, and bonuses. If you added heavily before a market rise, XIRR may look strong. If you invested just before a correction, XIRR may look weak even when the underlying holding recovers later.
- CAGR — best for single-entry, buy-and-hold comparisons over a fixed window
- XIRR — best for SIPs, staggered investments, and portfolios with many cashflows
- Both — useful together; neither replaces the other automatically
Why both appear on a tracking platform
Welthr records your transactions. That makes XIRR a natural fit for answering: given what I actually put in and when, what return did I experience? CAGR may still help compare a holding's price journey or benchmark-style growth over the same dates. Seeing both is about clarity, not contradiction.
Common misreadings to avoid
- Comparing your XIRR to a fund's advertised CAGR without matching time periods
- Expecting XIRR to match a market index — indices do not know your SIP dates
- Judging a long-term PPF allocation by short-term equity XIRR standards
- Treating any single metric as proof you should buy or sell something
Use metrics for reflection, not reaction
Returns help you understand past behaviour. They do not, on their own, tell you what to do next — especially across a mix of stocks, mutual funds, PF, and FDs. Use XIRR and CAGR to review whether your recording is complete and whether outcomes align with your expectations, not as trading signals.