Error 1 or error 5 while solving for TVM problems.

It's a little tough to diagnose with what you've given. Could you post all the numbers you're putting in, the result you're getting, and the result you expect?

Use the TVM (Time Value of Money) solver. Press APPS 1 1. Fill in the known values, then scroll down to the item you want to solve for and press ALPHA ENTER.

If the interest is 1 percent per month, then it's 12 percent per year. Thus I/Y = 12. You're making monthly payments so P/YR = 12. With N = 48 and PMT = -632, I get $23,999.54 .
Select FIN from the main menu, then TVM. Press [SHIFT] [CLEAR DATA] to clear. Press OTHER, enter 12 P/YR and select END if needed. Press [EXIT] to return to the TVM menu. Enter 48 N. Enter 12 I%YR. Enter -632 PMT. Press PV to see the result.

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2nd [CLR TVM] (clear TVM registers)

2 4 0 0 +/- PV ($2400 initial investment, negative because you're paying it out)

6 I/Y (6% annual interest)

1 N (one year)

CPT FV (compute future value, see 2544.00, the value after one year)

5 N (five years)

CPT FV (see 3211.74, the value after five years)

1 0 N (ten years)

CPT FV (see 4298.03, the value after ten years)

GOOD QUESTION, Patweetyp...

I've got you covered.

Seeing how it's been three weeks since you posted this there's a chance you've already gotten your answer, but let me go ahead solve this for those out there who may have had the same problem.

Background: There are FIVE TVM Keys; and as you would assume, you MUST input FOUR of them in order for the BA II Plus to solve for the fifth. Now let's get down to business.

1. Hit CLR TVM. [This is just a cleanup maneuver]
1a. Hit ENTER [yes, BA II Plus always needs to be told to store the value, ALWAYS]
2. Type in -2400
3. Hit PV [Since you are investing money at time 0, your present value is negative 2400]
3a. Hit ENTER
4. Type 6
5. Hit I/Y [Your annually compounded interest rate is 6 percent]
5a. Hit ENTER
6. Type 0
7. Hit PMT [you do not have any recurring deposits*]
7a. Hit ENTER
8. Type 1
9. Hit N [there is one year until expiration/liquidation/termination]
9a. Hit ENTER
10. Hit CPT
11. Hit FV [this is your ANSWER = 2544]
----- From here, all you would need to do is change N in order to get your other answers (5 years, 10 years, etc) ----

*If your calculation does not require a recurring payment then you really just have a basic equation of value which would be solved faster by hand. (IE, 2400*(1.06)^1=FV=2544).

You'll notice that I underlined "annually compounded" as well as "one year". The reason for this is because you ALWAYS need your interest term to match your time interval. For instance, if you had monthly payments of which you wanted the year-end total you would need a monthly effective interest rate, and N would be 12.



Okay, I hope that helped. The BAII Plus is the best calculator for time-value-money calculations I've come across. When things get more advanced, you will start using the amortization table which cannot be found in any other TI Calculator (from what I know). TVM is perfect for annuities, mortgages, loans, bonds, and more.

[email protected] for more questions.
TEXAS INSTRUMENTS = 1-800-TI-CARES...they are friendly.

Error 5 indicates one of two conditions while doing a TVM calculation.

1) You tried to compute the interest rate when FV, PV, and PMT all have the same sign. Make sure cash inflows are positive and outflows are negative.

2) The LN input is not greater than zero during calculations.

The first is much more likely.

Press the APPS key to bring up the Applications menu. Press 1 to select "Finance..." Press 1 to select "TVM Solver..."

Hi,
Through the Finance Application. Press [APPS][1:Finance][1:TVM-Solver] [ENTER].

Hope you find it.

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