Choosing the right finance calculator is non-negotiable for CFA and FRM because the exam bodies only allow specific business calculator models, and scientific calculators are not permitted. This guide shows which calculator to buy, what settings to check (TVM clearing, END vs BEGIN, decimals), and which functions actually save you time on exam day.
Key Takeaways
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- CFA (and CIPM) allow only TI BA II Plus (including Professional) and HP 12C family models (Platinum, Anniversary, and Prestige editions) with no exceptions.
- FRM allows TI BA II Plus (including Professional) and HP 12C family, and also HP 10BII / 10BII+ / 20B (officially listed by GARP).
- A backup approved calculator is allowed for CFA, and loose batteries + a small screwdriver are permitted (manuals are not).
- The highest-return exam skills include clear TVM/CF, correct sign convention, END vs BEGIN awareness, and fast use of TVM + CF/NPV/IRR + ICONV.
- You don't need to master every menu, just focus on the functions you repeatedly use in valuation, fixed income, and corporate finance-style questions.
Most candidates choose the TI BA II Plus because it's straightforward and matches how most prep providers demonstrate keystrokes. If you already use HP 12C comfortably, it's also allowed. Just don't switch late because speed and muscle memory matter more than the brand.
Officially Approved Calculators Quick Reference Table
⚠️ Note
Check out official CFA calculator policy and FRM exam policies (calculator section) for detailed info.
Which Calculator to Choose for CFA/FRM Exams?
If you're buying your first calculator for CFA, FRM, or CIPM, choose a calculator based on your speed of learning and comfortability. It will help reduce silly errors under time pressure during the exam. Here's a quick overview on the commonly used calculators:
TI BA II Plus (Standard) - Best Default for Most Candidates
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- Price: Around ₹3,800 - ₹4,500 (Indian market)
- Body: Plastic
- Functions: Sufficient for all CFA/FRM calculations
- Recommendation: Best option; cost-effective and widely used
TI BA II Plus (Professional) - Good (Not Necessary for Most)
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- Price: Around ₹5,600 - ₹6,300 (more expensive than standard)
- Body: Metal finish
- Extra Functions: Net Future Value (NFV), Discounted Payback Period
- Note: These extra functions are not essential for CFA/FRM exams. They can be calculated manually in 1-2 extra steps on the Standard version.
HP 12C
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- Price: Varies widely by variant ₹4,700 - ₹14,500 (Classic, Standard, Platinum, Anniversary)
- Body: Varies by variant
- Functions: Sufficient for CFA calculations; commonly used by those comfortable with HP workflow
- Recommendation: Choose HP 12C only if you already use it confidently; otherwise, TI BA II Plus is the easier default for most candidates
HP 10BII / 10BII+ / 20B - FRM Only
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- Price: Varies by model ₹2,165 - ₹13,500
- Body: Varies by model
- Functions: Suitable for FRM exam use (as per approved list), includes core business-finance calculator functionality depending on model
- Recommendation: Consider these only if you are preparing for FRM only; if CFA is also in your plan, prefer TI BA II Plus or HP 12C to stay CFA-compliant
Finance Exams Policy and Other Specifics
Finance exams have strict calculator rules, and it's worth reading the official policies once so you don't get surprised at the test center. The key is simple: bring an approved model, avoid anything that could be treated as "notes," and set up your calculator in advance so you're not troubleshooting under time pressure. Here's what the official policies dictate:
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- CFA policy states calculator covers, keystroke cards, and loose batteries are permitted in the testing room; instruction manuals are not.
- CFA policy also states you may keep a small screwdriver with you if needed to replace BA II Plus batteries.
- Many guidance pages summarizing the policy also note that a backup approved calculator is allowed, as long as it's one of the permitted models.
- Similar to CFA and FRM, CIPM's exam policy allows the same calculator models specified above.
- CFA Institute only authorises TI BA II Plus (incl. Professional) and HP 12C models.
- Between TI BA II Plus and TI BA II Professional, the professional models can add Net Future Value (NFV) and Discounted Payback Period. Alternatively, the BA II Plus is sufficient for all CFA/FRM needs and most widely used by exam candidates.
TI BA II Plus Calculator Durability and Battery Life
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- TI calculators can last 10+ years easily.
- Battery replacement: Changing it every 3 - 4 years is recommended. Check out our video on TI BA 11 Plus Calculator for more battery insights.
- Calculator replacement: You should replace after 7 - 8 years (due to general decline in product durability).
- Battery failure during exams is rare. Many students have used the same calculator for 8 - 10 years without a replacement.
The Basic Buttons
1. ON।OFF Button
Function: Turns the calculator on or off.
Notes: Memory is retained even if the calculator is switched off for days or weeks.
2. CE | C Button (Clear Work)
Function: Clears the current calculation from the screen.
Notes: Does not affect stored memory.
Example: Input: 50 + 6 → Press CE।C → Screen clears.
3. Backspace
Function: Deletes the last digit or decimal point.
Example: Input: 98.2 → Press backspace → 98. → Press again → 98 → Press again → 9 → Press again → empty.
4. Arrow Keys
Function: Scroll through previous entries, menus, or results.
5. 2nd / Shift Key
Function: Access secondary functions printed above the keys.
Examples: × normally multiplies → 2nd → × → factorial (!) (above '×'), = normally gives result → 2nd → = → recalls last answer (ANS)
6. Enter Key
Function: Confirms or stores values in memory.
7. Plus/Minus (±)
Function: Changes the sign of a number.
Example: Input: 5 → Press ± → Output: -5
Notes: Does not perform addition or subtraction. It is used to add a negative sign before the number.
8. Memory (M0–M9)
Function: Store and recall values.
Examples: Store: STO → 1 → ENTER → Saves in memory slot 1, Recall: RCL → 1 → Retrieves value from memory slot 1
Chn-Aos, Rand, Date, Profit, Breakeven, Percentage change, Interest Conversion
1. Date Format Adjustments
The calculator supports two date formats: US format (MMDDYY), European format (DDMMYY).
Note: The calculator uses the US format by default.
How to change format: 2nd → FORMAT (above decimal), Scroll to "Date", 2nd → ENTER (toggles between US and European)
Example: US: 12.31.90 → 31 Dec 1990, Euro: 31.12.90 → 31 Dec 1990
2. Digit Separator
You can display large numbers with commas (1,000) or dots (1.000).
How to use: 2nd → FORMAT, Scroll to separator option, 2nd → ENTER
Note: 1,000 is the default setting.
3. CHN vs AOS (Operating Modes)
CHN (Chain mode): Calculates strictly left to right. AOS (Algebraic Operating System): Follows BODMAS/PEMDAS.
AOS - problematic unless you're proficient at it, keep at CHN
How to switch: 2nd → FORMAT, Scroll to CHN/AOS, 2nd → ENTER
Example: Expression: 2 + (1 − 3) ÷ 4 - AOS: 2 + (−2 ÷ 4) = 2 − 0.5 = 1.5, CHN: 2 + 1 = 3; 3 − 3 = 0; 0 ÷ 4 = 0 (Standard)
Tip: Keep the setting in CHN mode.
4. Random Function (RAND)
Generates a random number between 0 and 1.
Key Press: 2nd → RAND (above ÷)
5. Days Between Dates (DBD)
Calculates number of days between two dates.
How to use: 2nd → DATE (above 1), Enter Date 1 (e.g., 25.06.17 for 25 June 2017 in DDMMYY format), Enter Date 2 (e.g., 31.12.17 for 31 Dec 2017), Scroll to DBD → CPT
Modes: ACT (Actual days) – real calendar days. 360 (30/360) – assumes 30-day months, 360-day year. Switch using: 2nd → ENTER
Example: 25 Jun 2017 → 31 Dec 2017 = 189 days (ACT) or 186 days (360 method).
6. Profit Function
Calculates cost, selling price, and margin.
Key Press: 2nd → PROFIT (above 3)
Steps: Enter Cost → e.g., 100, Enter Selling Price → e.g., 120, Scroll to Margin → CPT → 16.67%
Reverse Use: Enter Cost = 100, Enter Margin = 20%, Compute Selling Price → 125
7. Break-Even Analysis
Determines break-even quantity or profit based on fixed cost, variable cost, and price per unit.
Key Press: 2nd → BRKEVN (above 6)
Steps: Enter Fixed Cost = 100, Enter Variable Cost per unit = 2, Enter Price per unit = 3
Calculation: Scroll to Profit = 0 → CPT → Quantity = 100 units, If Target Profit = 20 → CPT → Quantity = 120 units, If Quantity = 800 → CPT → Profit = 700
8. Interest Conversion (ICONV)
Converts between Nominal Rate (INOM) and Effective Rate (EFF) based on compounding periods.
Key Press: 2nd → ICONV (above 2)
Steps: Enter Nominal rate = 12, Scroll down [↓]→Enter Compounding periods (C/Y) = 2 →Scroll up[↑]→CPT → EFF = 12.36%, If C/Y = 4 → EFF = 12.55%, If C/Y = 12 → EFF = 12.68%
9. Percentage Change (%CHG)
Calculates percentage increase or decrease between two values.
Key Press: 2nd → %CHG (above 5)
Steps: Old Value = 100, New Value = 110, CPT → %CHG = 10%
With Periods: If #PD = 2 → %CHG per period = 4.88%
LN, CF, NPV, Payback, Period, Discounted Payback Period, IRR function
1. LN (Natural Logarithm)
Definition: Used to calculate continuously compounded returns or solve exponential growth problems.
How to Use: Input number. Press LN → gives natural log (log base e). Press 2nd + LN (e^x) → gives a continuously compounded return.
Formula: FV=PV×e^rt, r=ln(FV/PV)
Example: If 1 becomes 1.10 in one year → r=ln(1.10)=0.0953 or 9.53%.
Tips & Tricks: Remember LN means log to the base e (≈ 2.718). Use for continuous compounding and exponential finance calculations.
2. CF (Cash Flow)
Definition: Used to input multiple uneven cash flows for valuation and investment analysis.
How to Use - Entering Cash Flows (CF): Press CF → starts cash flow mode. Enter CF0 (initial investment, usually negative). Press Enter. Scroll ↓ → Enter C01, C02, … cash flows. If repeated → set Frequency (F). Example: Cash flow 200 repeated 3 times → enter C01 = 200, F01 = 3.
Tips & Tricks: Use 2nd + CLR WORK to clear previous entries. Always press Enter after each input. Frequency setting saves time for repeating values.
3. NPV (Net Present Value)
Definition: Used to calculate the present value of future cash flows minus initial investment.
How to Use: After entering CF, press NPV. Enter discount rate (i%). Example: 15 → Enter. Scroll ↓ → Press CPT → NPV displayed.
Formula: NPV= ∑ CFt/ (1+r)^t –CF0
Tips & Tricks: Enter the rate as a whole number (10 = 10%). NPV helps check if a project adds value.
4. IRR (Internal Rate of Return)
Definition: Used to find the discount rate that makes NPV = 0 for a project or investment.
How to Use: After CF entries → Press IRR. Press CPT → IRR displayed.
Tips & Tricks: Multiple IRRs may occur if cash flows alternate signs. Error messages appear if no IRR exists.
5. Payback / Discounted Payback
Definition: Payback Period (PB): Measures the time required to recover the initial investment from project cash inflows. It ignores the time value of money. Discounted Payback Period (DPB): Similar to PB, but accounts for the time value of money by discounting cash flows before calculating recovery.
How to Use: Enter cash flows as usual in the calculator. Go to the NPV Menu. Scroll down → Select Payback / DPB option. The calculator will automatically compute both PB and DPB.
Tips & Tricks: PB = Quick and simple, but ignores discounting. DPB = More accurate since it incorporates the time value of money. Useful for liquidity assessment and understanding how fast an investment is recovered.