The document discusses the time value of money concept. It states that time value of money refers to money received today being more valuable than the same amount received in the future. It also underpins the concept of interest. The document then provides techniques for adjusting cash flows for time value of money using discounting and compounding. It explains discounting as calculating the present value and compounding as calculating the future value of cash flows. Specific formulas and examples are given for single cash flows, annuities, and perpetuities under both discounting and compounding.