net present value
The difference between the present value of cash inflows and outflows over time, used to evaluate the profitability of an investment or project.
Example
“The project's positive NPV of $500,000 confirmed it would create value — future cash flows exceeded the investment cost in present value terms.”
Memory Tip
NPV > 0 = do the project. NPV = sum of all future cash flows discounted back to today, minus investment.
Why It Matters
Net present value helps you make smart financial decisions by showing whether an investment will actually make you money after accounting for the time value of money. Understanding NPV prevents you from making poor investments that seem profitable on the surface but actually destroy your wealth when you consider the timing and risk of cash flows.
Common Misconception
Many people think that if an investment produces more total cash than it costs, it is a good investment. However, NPV accounts for the fact that money received in the future is worth less than money received today, so a project returning $10,000 over 10 years might have a negative NPV if the initial cost is high.
In Practice
Imagine you can invest $10,000 today in a solar panel system. It will generate $1,500 in energy savings per year for 10 years. If you discount those future cash flows at a 5% annual rate, the present value of those savings is approximately $11,585. Subtracting your $10,000 investment gives an NPV of $1,585, indicating this is a profitable investment worth making.
Etymology
NET (after all) PRESENT VALUE. The NET result of all cash flows expressed in PRESENT VALUE terms.
Common Misspellings
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