XNPV Function

The XNPV function returns the net present value (NPV) of an investment based on a discount rate and a series of cash flows that occur at irregular intervals. Values represent cash flows and be correspond to dates. Negative values represent cash paid out; positive...Read more

XIRR Function

The XIRR function calculates the internal rate of return for a series of cash flows that occur at irregular intervals. Payments are expressed as negative values and income as positive values.  If the first value is a cost or payment, it must be a negative value. Subsequent payments are...Read more

MIRR Function

The standard Internal rate of return function (IRR) assumes all cash flows are reinvested at the same rate as the IRR. The modified internal rate of return function (MIRR) accepts both the cost of investment (discount rate) and a reinvestment rate for cash flows received.

In the example...Read more

NPV Function

NPV calculates the net present value (NPV) of an investment using a discount rate and a series of future cash flows. The discount rate is the rate for one period, assumed to be annual. NPV in Excel is a bit tricky, because of how the function is implemented. Although NPV carries the idea of "net...Read more

IRR Function

The internal rate of return (IRR) is the interest rate received for an investment with payments and income occurring at regular intervals (i.e. monthly, annual). Payments are expressed as negative values and income as positive values. Amounts can vary, but intervals need to be the same. The...Read more

Sum by week number

In this example, the goal is to sum the amounts in column D by week number, using the dates in column C to determine the week number. The week numbers in column G are manually entered. The final results should appear in column H. All data is in an Excel Table named data in...Read more

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