Identify the model before following keys
This guide covers the Texas Instruments BA II Plus. These setting and key labels follow its official TVM worksheet documentation. Other financial calculators may use a different workflow.
Set up the TI BA II Plus
Use 2nd → CLR TVM. Open 2nd → P/Y, enter 1 → ENTER, move down to C/Y, enter 1 → ENTER, then 2nd → QUIT. Open 2nd → BGN; if BGN appears, use 2nd → SET to select END, then quit.
Enter the example
Store 1 in N, 10 in I/Y, 1100 in FV, and 0 in PMT. Press CPT → PV. The result is −1,000.00, representing the initial outflow corresponding to the later receipt.
Interpret the negative present value
The magnitude is $1,000. The negative sign means money paid out today in exchange for the positive $1,100 future receipt. It does not represent a loss of $1,000. The relationship is simply 1,100/1.10 = 1,000 with the cash-flow directions represented explicitly.
The online present value calculator displays the magnitude of the required present amount using a positive input for the later amount. Compare magnitudes with the device example while keeping the economic direction in mind.
Discount factor and horizon
In this one-year example, the discount factor is approximately 0.909091. Multiplying the later receipt by the factor produces the current amount. A longer horizon uses a larger exponent in the denominator. At a positive discount rate, a more distant receipt has a smaller present value, all else equal.
At a zero discount rate, the factor is one and the amount does not change across dates. Under a negative rate, the direction can reverse. These are features of the stated equation, not recommendations about which discount assumption to choose.
Do not apply a lump-sum example to a payment stream
This example has only one future receipt. Several payments require several discount factors. Equal, regularly spaced payments can be handled by an annuity factor, while unequal payments require explicit cash-flow rows. The annuity present value calculator illustrates the equal-payment case.
For a project with an initial purchase price, use NPV to compare that cost with the discounted later stream. Do not subtract an initial cost again after already incorporating it into a signed flow.
Verify by reversing the calculation
Growing the $1,000 magnitude at 10% for one year recovers $1,100. This round-trip check is useful because it tests the matching rate and horizon rather than merely looking for a plausible answer. See the future value device guide for the forward direction and present versus future value for the conceptual comparison.
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