Using the TI-BA II+ calculator for financial calculations
© Steve Bollweg, Joseph Crisologo and Michael D. Kinsman

This is a brief guide to using the TI BA II+ financial calculator. It does not replace your instruction booklet,
nor does it replace actually practicing with the calculator. In the materials below, BOLD FACE indicates
that you press a key with that label on your TI BA II+. # below indicates that you press a number key on
your TI BA II+. 2ndindicates that you press the gray shift key that accesses the secondary functions of the
keys.

Setting up your calculator.To set the number of digits after the decimal point, press 2nd

Format # ENTER where # is the number of digits you want to display after the decimal point.

Financial calculations.To set your calculator for beginning of period mode,press 2nd
toggle between begin and end mode. To enter the number of
# (the number of periods in a year), and press ENTER(for
for monthly).

BGN. Then, entering 2nd SETwill
periods in a year press 2nd P/Y, enter
example, enter 2nd P/Y 12 ENTER

You should use the following sign convention when you work on financial calculations:
• Treat cash flows you are receiving as positive numbers.
• Treat cash flows you are paying out as negative numbers.

To turn a positive number into a negative number, enter the number on your keypad and press +/-.

For the calculations below, you must first clear your calculator by entering 2nd QUIT 2nd CLR TVM. In
each of these calculations, remember the sign convention! If you have an error, either that or omitted data
is the most likely cause.

To
calculate

First
clear

Next
enter

Next
enter

Next
enter

Next
enter

Push for
result

Future
value
Present
value
Interest
rate
Annuity
payment

See
above
See
above
See
above
See
above

# N

# I/Y# PMT(if any).# PV(if any). Single
Annuity paymentspayments now
# I/Y# PMT(if any).# FV(if any). Single
Annuity paymentspayments at time N
# PMT(if any).# PV(if any). Single# FV(if any). Single
Annuity paymentspayments nowpayments at time N
# I/Y# PV(if any). Single# FV(if any). Single
payments nowpayments at time N

CPT FV

# N

CPT PV

# N

CPT I/Y

# N

CPT
PMT

To amortize a loan.Do the steps for annuity paymentas shown above. Press 2nd Amort.
2nd CLR Work. The up and down arrows allow you to scroll through
P1= # is the first period you want to amortize, and the display P2 = #
the end of the period you want to amortize. For example, to do
at P1 = #, then scroll down to P2 =# and press

Clear the worksheet by pressing
the variables easily. The display
(displayed by pressing the down arrow) is
periods 1 to 5, press 1 ENTER

5 ENTER.Then,

• To display the remaining balance of the loan, press the down arrow.
• To display the amount of principal you paid in this interval, press the down arrow again.
• To display the amount of interest you paid in this interval, press the down arrow again.

To do subsequent period amortizations, enter new values for P1 and P2 and follow the stepslisted
above.

To calculate IRR and NPV.

• Press CF to access the cash flow worksheet.
• Clear previous data by pressing 2nd CLR Work.
• In entering your data, remember that CF0is the flow at period zero; C01 is the first flow after time
zero; C02 is the second flow after time zero, etc.
• To enter each flow, press #ENTER. If the cash flow is repeated, enter #ENTER
when the F0n variable is shown on the display. (For example, if you have three $100
flows in a row, press 100 ENTER down arrow3 ENTER)
• Press the down arrow key to get to the next cash flow.
• After you have entered all the cash flows:
• To calculate an NPV, press NPV, enter the interest rate (# ENTER),
scroll down using the down arrow key to display NPV, and press CPT.
• To calculate an IRR, press IRRand press CPT.