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Free financial calculator
HP 12C-style RPN calculator for CFA practice
Use the calculator immediately for RPN arithmetic, mortgage payments, present value, future value, NPV, and IRR. CFA Institute allows the HP 12C family on exam day, so this is filed under the CFA section as a practice tool rather than a generic tools page.
Start tutorialMortgage payment and affordability checks
CFA-style TVM practice
Bond and valuation desk math
NPV and IRR sanity checks
How to use this HP 12C-style calculator
Click any tutorial step to load its keystrokes beside the calculator. Use the browser version to learn RPN entry, TVM register storage, payment solving, and cash-flow checks.
CFA practice checklist
Learn the RPN stack before you are solving timed questions.
Use opposite signs for money received and money paid.
Convert annual rates to the period used by n.
Reset or overwrite stale TVM registers between problems.
The DATE and SL/SOYD/DB depreciation keys are simplified learning helpers, not exact HP 12C keystrokes.
Practice the same workflow on your approved physical calculator before exam day.
hp 12c financial calculatorNo CF
0.00000
T0.0000
Z0.0000
Y0.0000
X0.0000
Ready · FIX 5 · END
Calculator starts blank
Every register and the stack start at 0 — nothing is pre-filled. Use Load example to populate the worked $300,000 loan TVM values, or just start typing.
Loaded example
Monthly loan payment
Calculate the monthly payment on a $300,000 loan over 30 years at 6% annual interest. Use monthly periods and enter the annual rate as 0.5% per month.
360 n0.5 i300000 PV0 FVPMT
Result: -1798.65
The payment appears negative because it is an outgoing cash flow.
Helper — not physical calculator keystrokes
The g DATE date helper and the SL, SOYD, and DB depreciation helpers are simplified learning aids: they return the CFA answer but do not reproduce the exact HP 12C keystroke sequence. RPN entry, the TVM registers, NPV, and IRR match the hardware keystrokes.
TVM registers
n
0.000000
i
0.000000
pv
0.000000
pmt
0.000000
fv
0.000000
Type a value and press a TVM key to store it. Press a TVM key again without typing to solve that value. Interest is per period, so 6% APR with monthly payments is entered as 0.5.
Cash-flow helper
Interactive finance visuals
The charts update from the TVM registers and cash-flow helper, so users can see the loan balance path, payment mix, project cash-flow timing, and cumulative discounted value without leaving the calculator.
Remaining balance
Hover or focus a point to inspect the curve.
Hover or focus a bar to inspect the value.
Hover or focus a bar to inspect the value.
Cumulative discounted value
Hover or focus a point to inspect the curve.
Useful beyond one query
RPN arithmetic, TVM, NPV, and IRR make it useful for CFA prep, analyst work, real estate, and business-school finance.
Natural exclam.ai bridge
Finance students can calculate a result here, then use exclam.ai to turn their owned notes into flashcards, quizzes, and a weekly plan.
Where HP 12C is relevant
I checked current calculator policies before placing this page. The HP 12C is a fit for CFA and several adjacent finance credentials, but not for exclam.ai's current SOA actuarial section.
CFA Program
AllowedCFA Institute authorizes the HP 12C family and TI BA II Plus family.
FRM
AllowedGARP lists HP 12C models among the business calculators authorized for FRM exams.
CAIA
AllowedCAIAA authorizes HP 12C models and TI BA II Plus models.
CFP
AllowedCFP Board lists HP 12c and HP 12c Platinum among approved calculators.
CMA
AllowedIMA permits HP 12c and HP 12c Platinum for CMA exams.
SOA actuarial
Not on SOA listSOA lists approved Texas Instruments models; HP 12C is not part of the SOA-approved set.
Prefer the BA II Plus workflow?
The other CFA-approved calculator family uses algebraic entry and worksheet keys instead of RPN. Use the BA II Plus-style page if that matches the calculator you plan to bring on exam day.
Studying for CFA or finance exams?
exclam.ai turns owned prep PDFs and notes into a daily plan with flashcards, quizzes, and review. Use this calculator for desk math, then use exclam.ai for the study system around it.
Sitting the CFA exam? exclam.ai turns your exam date into a day-by-day study plan — start free.
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FAQ
Is this an exact HP 12C emulator?
No. This is an independent HP 12C-style financial calculator that recreates common RPN, TVM, NPV, and IRR workflows in the browser. It does not use HP ROMs, HP firmware, or copied calculator assets.
Can I use it for CFA, finance, or real estate practice?
Yes. It is built for common study and desk-check workflows: RPN arithmetic, loan payments, present value, future value, NPV, IRR, and mortgage-style TVM problems.
Do actuarial candidates use the HP 12C?
Not for the SOA/CAS actuarial exam path exclam.ai currently covers. SOA lists Texas Instruments models only, so this calculator is filed under CFA rather than actuarial.
How does the TVM row work?
Type a number, then press n, i, PV, PMT, or FV to store it. Press a TVM key without typing a new number to solve that register from the other four values.
What does RPN mean?
Reverse Polish notation means you enter the numbers before the operator. For example, 12 ENTER 3 + produces 15. This feels different at first, but it reduces parentheses once you get used to the stack.
Can this replace my exam-day calculator?
No. Use it for browser practice, checking work, and learning the workflow. For an exam, practice on the physical calculator model you are allowed to bring and check the official calculator policy before test day.
Why does payment sometimes show as a negative number?
Financial calculators use cash-flow signs. Money you receive and money you pay should have opposite signs, so a loan payment usually appears negative when PV is positive.
HP and HP 12C are trademarks of their respective owner. CFA Institute does not endorse, promote, or warrant third-party prep tools. exclam.ai is not affiliated with, sponsored by, or endorsed by HP. This page is an independent calculator workalike for educational and general finance use.