BA II Plus Calculator Exam Rules (Testing Guide)
For CFA Program exams, the Texas Instruments BA II Plus and BA II Plus Professional are approved calculator models, and candidates may bring up to two approved calculators. Clear the calculator’s memory and follow the current exam-day instructions. Check CFA Institute’s rules for your specific exam, since its policy—not general testing-center practice—sets what is allowed.
Preparing for an exam means learning more than keystrokes. You need to know which calculator is allowed, how to prepare it, and what to do if it fails. I recommend treating these as separate tasks: check the rules first, practice on the exact model you will use, then review your setup before exam day.
This guide focuses on CFA Program exams. Calculator rules can differ across exams and test providers, so do not assume that permission for one exam applies to another. CFA Institute’s current calculator policy and the instructions in your candidate portal are the key sources to check.
CFA Exam Calculator Rules and Approved BA II Plus Models
CFA Institute sets which calculators candidates may use during its exams. Its policy permits the TI BA II Plus and BA II Plus Professional, as well as the HP 12C family. Candidates may bring up to two approved calculators. Check the current policy and your exam instructions before relying on these details.
The exact model matters. A calculator that looks similar to an approved one is not automatically allowed. Check the model name on the device and compare it with CFA Institute’s current list. If your calculator is not on that list, do not bring it as your exam calculator.
| Situation | What to do |
|---|---|
| You own a TI BA II Plus | Confirm the model against CFA Institute’s current calculator policy. |
| You own a BA II Plus Professional | It is an approved model under the stated policy; recheck before your exam. |
| You want a backup | You may bring up to two approved calculators, subject to current exam-day instructions. |
| You have another calculator model | Do not assume it is allowed. Check the official list. |
| You plan to use a phone or watch | Do not use it as a calculator or reference tool. |
A second calculator can help if your main one has a problem, but it must also meet the rules. Do not assume you can bring manuals, cases, extra devices, or other accessories. Check the current instructions for what you may have with you.
Practical scenario: You borrow a calculator from a friend and see “BA II” on the front. Before exam day, check the full model name on the calculator itself. If it does not match an approved model, use an approved device instead.
The safest rule is simple: check CFA Institute’s current policy, then check your candidate portal. A test center’s general rules do not replace CFA Institute’s requirements.
BA II Plus Setup, Memory Clearing, and Exam-Day Requirements
Before the exam, prepare the calculator you plan to use and clear its memory as CFA Institute requires. Use the correct procedure for your specific model, then check the display. Follow the current candidate instructions as well; they may give details for your exam administration.
Memory clearing helps ensure that stored information is not present during the exam. Do not rely on an old note, a video, or memory alone for the key sequence. Instead, consult the current CFA Institute guidance and the official manual for your calculator model. If their instructions differ from informal advice, follow the official exam instructions.
A safe setup check
- Confirm the model. Read the full model name on the calculator and compare it with CFA Institute’s approved list.
- Find the official memory-clear steps. Use the current policy or candidate guidance, and the manufacturer’s manual for your model.
- Clear the memory. Follow the listed steps exactly. Do not try a sequence from another calculator model.
- Check the result. Follow the guidance for your model to confirm the clear was completed. If you are unsure, repeat the official procedure or seek help before exam day.
- Test basic use. Enter a simple calculation and check that keys and display work as expected.
- Check the battery. This is a practical step, not a substitute for exam rules. Replace a weak battery before the exam if needed.
If you have two approved calculators, prepare both. Do not assume that clearing one clears the other. Check each device on its own.
Practical scenario: You clear the calculator but are not sure whether the process worked. Do not wait until the exam to find out. Review the official steps again and verify the result before you leave for the test center.
Preparation Strategy, Practice, and Common Calculation Errors
Exam-ready use means more than knowing where a key is. It means entering information carefully, choosing the right calculator function, and checking whether the result makes sense. Practice on the same model you plan to bring, and use approved study materials to confirm the methods and settings needed for your exam.
A financial calculator can solve time-value-of-money problems, which involve cash flows at different points in time. It can also support other calculations covered by your study plan. The calculator does not decide whether your entries are correct. A wrong period count, cash-flow sign, or setting can lead to a wrong result.
Practice with a check routine
For each practice question, use the same routine:
- Read the question and identify what it asks you to find.
- Write down the values you need to enter, including the number of periods and any cash flows.
- Check that each value is entered in the correct place.
- Review settings that may affect the answer, using your official study materials as a guide.
- Calculate, then compare the result with the question’s wording and expected direction.
- If the answer seems wrong, recheck the entries before repeating the calculation.
Do not try to memorize every key sequence without understanding what the inputs mean. A sequence can be useful, but it will not protect you from entering the wrong value. I recommend practicing with questions that vary in wording so you learn to identify the needed inputs, not just repeat a familiar pattern.
| Practice issue | What to check |
|---|---|
| Result looks far too large or small | Recheck the entered values, periods, and settings. |
| Answer has the wrong sign | Review how you entered cash inflows and outflows. |
| You cannot repeat a calculation | Practice the full input process, not only the final key press. |
| A key seems unresponsive | Test it before exam day and check the device condition. |
| You are unsure about a setting | Use your official study materials and calculator manual; do not guess. |
Do not use unapproved devices to work around a calculator problem. If your calculator stops working during the exam, notify the proctor and follow their directions.
Exam-Day Checklist and Common Rule Risks
A short checklist can prevent avoidable problems. Confirm your approved model, memory-clear status, and permitted items before you leave. On exam day, follow the candidate instructions and proctor directions. If something is unclear, ask the proctor rather than trying an unapproved fix.
| When | Action |
|---|---|
| Before exam day | Read the current CFA Institute calculator policy and candidate instructions. |
| During preparation | Practice with the same approved model you will bring. |
| Before leaving | Check the model, battery, display, and memory-clear status. |
| At the test center | Follow instructions about calculators and other items. |
| If a device issue occurs | Tell the proctor and follow their directions. |
The main risks are bringing a non-approved model, using a prohibited device, or failing to follow memory-clear and other candidate instructions. Rule violations can have exam consequences. A familiar calculator is not automatically an approved one, and a test center’s usual practice does not override CFA Institute rules.
Do not assume that two calculators are always better than one. The policy allows up to two approved calculators, but your current exam instructions still matter. Bring a backup only if you have checked that it is allowed and prepared it as required.
How Calculator Readiness Fits the CFA Program
Calculator rules are one part of preparing for a CFA Program exam. Being allowed to use a BA II Plus does not change the exam requirements or guarantee a result. Your calculator should support your work, while your study plan and the official candidate guidance remain central.
Keep the focus on the exam you are taking. Confirm its current rules, prepare your device, and practice the calculations in your study materials. If you are considering another exam or credential, check that program’s own calculator policy; do not carry CFA rules over to a different test.
Frequently Asked Questions
These answers summarize the main points, but current CFA Institute policy and your candidate portal are the final sources for your exam. Check them again before each administration because rules and instructions can change.
Is the TI BA II Plus allowed on the CFA exam?
Yes. CFA Institute permits the TI BA II Plus. Confirm the exact model and current rules before your exam.
Is the BA II Plus Professional allowed?
Yes. The stated CFA Institute policy permits the BA II Plus Professional. Check the current approved list before exam day.
How many calculators can I bring?
CFA Institute allows candidates to bring up to two approved calculators. Follow your current candidate instructions about what you may bring.
Can I use any calculator with similar functions?
No. Do not assume another model is allowed because it has similar features. Check its exact model name against CFA Institute’s current approved list.
Do I have to clear the calculator’s memory?
Yes. CFA Institute requires candidates to clear calculator memory. Use the current instructions for your model and confirm the process before exam day.
Where should I find the reset or memory-clear sequence?
Use current CFA Institute guidance and the manufacturer’s manual for your exact model. Avoid relying on unofficial instructions that may apply to a different calculator.
Can I use my phone as a backup calculator?
No. Do not use a phone, watch, computer, or other unapproved device as a calculator or reference tool.
Can I bring a second BA II Plus?
You may bring up to two approved calculators. Check your current exam instructions, and prepare each calculator separately.
What should I do if my calculator stops working during the exam?
Notify the proctor and follow their directions. Do not use an unapproved device or attempt a workaround.
Do these rules apply to every exam?
No. Calculator rules depend on the exam and its administrator. These details concern CFA Program exams; check the rules for any other exam separately.
(This article was written by one of our staff writers, Christopher Langston. Visit our Meet the Team page.)
