how do i calculate xirr for a ten year old fund

To calculate the XIRR (Extended Internal Rate of Return) for a ten-year-old fund, you need to have a series of cash flows, including both contributions and distributions, along with their respective dates. Use a financial tool or software like Excel, where you can input these cash flows and dates into the XIRR function, which will compute the rate of return that equates the net present value of these cash flows to zero.