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What Is the Time Value of Money?

The time value of money is the principle that a pound today is worth more than a pound in the future. It underpins discounting, NPV and much of financial management. Here's why.

The time value of money is the principle that a pound received today is worth more than a pound received in the future. Money available now can be invested to earn a return, so it grows over time. This simple idea underpins discounting, net present value, and much of the financial management you study in ACCA FM.

Why is money worth more today?

  • Investment potential — cash today can be invested to earn interest or a return.
  • Inflation — money tends to lose purchasing power over time.
  • Risk — a future receipt is less certain than one in hand.

Present value and discounting

To compare cash flows at different points in time, we bring future amounts back to today's value using a discount rate — a process called discounting. A future cash flow multiplied by a discount factor gives its present value. The higher the rate or the further away the cash flow, the smaller its present value.

Where it's used

The time value of money drives investment appraisal (NPV and IRR), business and bond valuation, and lease accounting. Almost anywhere future cash flows are compared, discounting is involved.

A firm grasp of discounting is essential across ACCA FM and AFM. Practising discounting and NPV questions and marking them against the official ACCA scheme with The 50% Club shows you exactly where your method slips — the fastest way to make these marks reliable.