Examples
Examples
Try the starting example
- Initial capital cost (USD)
- 25000
- Annual net cashflows after year zero (USD)
- 6000,6000,6000,6000,6000
- Annual discount rate (%)
- 5
- Residual value at final year (USD)
- 2000
- Discounted net present value (USD)
- $2,543.91
- Discounted payback (years or not reached)
- 4.594156
- Discounted cumulative cashflow (JSON)
- [-25000,-19285.7142857,-13843.537415,-8660.51182378,-3724.29697503,2543.91235672]
Try another scenario
- Initial capital cost (USD)
- 25001
- Annual net cashflows after year zero (USD)
- [6000, 6000, 6000, 6000, 6000]
- Annual discount rate (%)
- 5
- Residual value at final year (USD)
- 2000
- Discounted net present value (USD)
- $2,542.91
- Discounted payback (years or not reached)
- 4.594316
- Discounted cumulative cashflow (JSON)
- [-25001,-19286.7142857,-13844.537415,-8661.51182378,-3725.29697503,2542.91235672]
Calculation method
Calculation method
Discounted net present value (USD)
Year-end discounted cashflows with final residual; fractional payback linearly allocates the crossing year’s discounted cashflow.
Discounted payback (years or not reached)
Year-end discounted cashflows with final residual; fractional payback linearly allocates the crossing year’s discounted cashflow.
Discounted cumulative cashflow (JSON)
Year-end discounted cashflows with final residual; fractional payback linearly allocates the crossing year’s discounted cashflow.
Symbols and units
- a
- Initial capital cost (USD)
- b
- Annual net cashflows after year zero (USD)
- c
- Annual discount rate (%)
- d
- Residual value at final year (USD)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- User-supplied measurements and assumptions; Year-end discounted cashflows with final residual; fractional payback linearly allocates the crossing year’s discounted cashflow. Supported limits: Finite numeric values bounded to 1e9 magnitude; lists and tables contain 1–100 records unless a stricter bound is stated. Inputs use the units shown. Lists explicitly paired by a method must have matching lengths; independent polynomial coefficient vectors may differ. Respect stated physical, interpolation, policy and computational domain limits.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.