What is the net present value of my investment? Find out instantly with our free NPV calculator. Calculate net present value, IRR approximation, payback period, and profitability index for any investment scenario with dynamic cash flow inputs.
| Year | Cash Flow ($) |
|---|
CF_t = Cash flow in year t
r = Discount rate (as decimal, e.g., 10% = 0.10)
t = Year number
Initial Investment = Upfront cost (outflow)
Net Present Value (NPV) calculates the present value of all future cash flows (both inflows and outflows) discounted at a specific rate, minus the initial investment. A positive NPV means the investment is expected to generate more value than it costs โ accept the project. A negative NPV means the investment is expected to lose value โ reject the project.
The discount rate reflects the opportunity cost of capital โ the return you could earn from an alternative investment of similar risk. A higher discount rate reduces the present value of future cash flows, making NPV more conservative.
The Internal Rate of Return (IRR) is the discount rate that makes NPV equal to zero. If NPV is positive at the given rate and negative at a higher rate, we estimate IRR using linear interpolation between these two rates. If NPV is already negative at the given rate, IRR is below the discount rate.
A company invests $50,000 in new equipment with a discount rate of 8%. Expected annual cash flows: Year 1: $12,000, Year 2: $14,000, Year 3: $16,000, Year 4: $18,000, Year 5: $20,000.
NPV = $12,000/(1.08)ยน + $14,000/(1.08)ยฒ + $16,000/(1.08)ยณ + $18,000/(1.08)โด + $20,000/(1.08)โต โ $50,000 = $11,071.38 โ a positive NPV indicating a profitable investment.
An investor puts $200,000 into a rental property with a discount rate of 6%. Expected annual cash flows: Year 1: $24,000, Year 2: $26,000, Year 3: $28,000, Year 4: $30,000, Year 5: $32,000, Year 6: $34,000, Year 7: $36,000.
NPV = $24,000/(1.06)ยน + $26,000/(1.06)ยฒ + $28,000/(1.06)ยณ + $30,000/(1.06)โด + $32,000/(1.06)โต + $34,000/(1.06)โถ + $36,000/(1.06)โท โ $200,000 = โ$17,886.21 โ a negative NPV suggesting the investment may not meet the required return.
Try entering these values into the calculator to verify the results!
Net Present Value (NPV) is one of the most fundamental concepts in capital budgeting and investment analysis. It measures the difference between the present value of cash inflows and the present value of cash outflows over a period of time. NPV is widely used in corporate finance, real estate investing, and personal investment decisions.
The core principle behind NPV is the time value of money โ a dollar today is worth more than a dollar tomorrow because you can invest it and earn a return. By discounting future cash flows back to their present value, NPV provides a single dollar figure that represents the net value created by an investment.
The time value of money (TVM) is the bedrock concept behind NPV. It states that money available now is worth more than the same amount in the future due to its potential earning capacity. This principle is why we discount future cash flows when calculating NPV.
A dollar received today can be invested and grow over time. If you receive a dollar one year from now, you lose the opportunity to earn a return on that dollar for a full year. The discount rate used in NPV calculations represents this opportunity cost โ the return you could earn from the next best alternative investment of comparable risk.
Reduces the present value of future cash flows more aggressively. Results in a lower (or more negative) NPV. Used for riskier investments where you demand a higher return to compensate for uncertainty.
Reduces future cash flows less aggressively. Results in a higher (or more positive) NPV. Used for safer investments like government bonds or blue-chip stocks where risk is minimal.
Selecting the right discount rate is critical to getting meaningful NPV results. The discount rate should reflect the risk of the investment and your opportunity cost of capital. Here are common approaches:
A common mistake is using too low a discount rate, which overstates NPV and leads to poor investment decisions. When in doubt, use a conservative (higher) rate to stress-test your assumptions.
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Educational Purposes Only: This Net Present Value calculator is provided for educational and informational purposes only. Results are estimates based on the information you provide and standard financial formulas. They do not constitute financial advice, investment recommendations, or a guarantee of future returns. Actual investment outcomes depend on many factors including market conditions, tax implications, inflation, and specific investment risks. Always consult with a qualified financial professional before making investment decisions.