Use Microsoft Excel to calculate EBITDA (earnings before interest, tax, depreciation, and amortization) profit margin.

Learn how to calculate the net present value (NPV) of your investment projects using Excel's XNPV function.

Using the same steps that you employed to determine the profit margin, calculate your future profits based on the assumption that your bookings and room rates are increased.

Calculating the return One of the best methods for calculating an average return for a stock investment is the XIRR function in Excel.