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Financial Calculations I am trying to change the value of "N' from years into months. How do I do that?

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Re: Financial Calculations

Since there are twelve months in a year, multiply by twelve. For example, a thirty-year mortgage involves 360 months.

Just be sure to divide the interest rate by twelve to match. For example, 6% annually is 0.5% monthly.

Posted on Feb 19, 2010

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Is it possible to calculate NPV (Net Present Values) and IRR in the HP48 calculator?

Not built-in (the 48 is a scientific calculator, not a financial calculator). But there are plenty of programs and applications for financial calculations. Some of them are:

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BA II plus gives approximate answer for FV calculations

The 107,186.37 is what the future value would be if the interest per month is 0.58%, which is 6.96% per year. Try the following:
2nd [CLR TVM] 1 2 N 7 I/YR 1 0 0 0 0 0 PV CPT FV
As for rounding, you can change the calculator display to any number of digits (up to a limit, of course) by pressing 2nd [FORMAT] and then a number specifying the number of desired digits after the decimal point or 9 for floating decimal.

Mar 14, 2012 | Texas Instruments BA-II Plus Calculator

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I am trying to find a way to use my calculator and its financial functions but i have no idea how. i need the present value of $1 and present value of annuity of $1

Neely Neel Neel Neelerson,

--> APPS
--> TVM

Viola. The initials TVM stand for Time-Value-Money; it's a widely used tool throughout financial mathematics. If you are looking to deal with annuities, bonds, present value equations, future value equations, or even certain stocks then you will want to use the TVM app within your TI-84.

When you go into that menu screen you will see about 10 input lines; and despite how you're being taught you'd be best off using only five (from a mathematical & conceptual standpoint). The backbone of the TVM is the time-zero equation of value. So, all you want to be touching is the N, I/Y, PV, PMT, and FV keys.

Background on TVM:
N = Number of intervals
I/Y = Effective Interest Rate Per Interval (5% is .05 but the computer wants it entered as 5.0)
PV = The Present Value
PMT = Recurring Payment (either deposit or withdrawal)
FV = Future Value

There are like 3 other inputs that I encourage you to ignore (in exchange for learning exactly what's going on within this application).

NOTE: You MUST make your effective interest term match your number of intervals. For example, an annuity with monthly payments for 5 years with a monthly effective interest rate of 2% would need an N value of 60 (which is 12 months per year times 5 years for a total of 60 months).

There's more that could be said, but I think this should help you find the PV of an annuity.

Go Bulls,

The Math Cheetah

Mar 13, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

I would like some help in solving some TVM problems using the BA II Plus calculator. i.e. How to solve: I invested a lump sum of $2400 in an investment that returns 6% annually. How much will the...

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)

Feb 19, 2011 | Texas Instruments BA II PLUS Financial...

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Hi: I bought a HP 10bii Financial Calculator. I find it difficult to get a correct answer... For an easy example, I try to find the future value of $100 today after 3 years with an annual interest rate...

What you've done is calculate the future value after 3 months, not 3 years.

Press 1 SHIFT [P/YR] to set the payments per year to one. Now the FV key should give you 115.76

Feb 15, 2011 | HP 10bII Calculator

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Trying to solve for present value of a monthly lease payment when the payments begin in 2013 and go for 5 years. Payment is fixed at $2,500 per month for 5 years, but how do I calculate this without doing...

f xy (clear financial registers)
5 g n (5 years at 12 payments per year)
2 5 0 0 CHS PMT ($2500 payment per month)
9 i (9% annual rate)
PV (calculate present value)

Feb 14, 2011 | HP 12c Calculator

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Hi, I am using my BA I Plus to do the following cal.: N = 6 I=7 PMT = -42000 FV = -700000 this is a problem about bond. Couple days ago, when I entered the above input, I get the same as the...

Check the number of payments per year. With one payment per year the present value is 666,634, while with twelve payments per year the present value is 922,926.

You probably changed it while working out another problem.

Oct 03, 2010 | Texas Instruments BA II PLUS Financial...

1 Answer

Incorrect claculation

I get an answer of 366.91 in my 12C as well. You might try either putting in a zero for FV before hitting the [PMT] key, or clearing your registers before doing the problem, as you may be picking up an old value from a previous problem in the FV register.

Jan 17, 2008 | HP 12c Calculator

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