E-CodeTime value of money solver (N, I%, PV, PMT, FV) — a TI-84 Plus CE program
TVM is a TI-BASIC program for the TI-84 Plus CE. Solve for any one of periods, annual rate, present value, payment or future value from the other four, with the calculator's own sign convention (money you pay out is negative), end-of-period payments, any number of periods a year.
What it asks for and what it shows
It asks for 5 values at its prompts, after you pick option 4 from its menu. In the example below it shows N, I%, PV, PMT, FV, I PER.
Example run
One of its oracle test cases: “mortgage payment”. The inputs are typed in order, and the results are the values the case expects on the screen.
| Step | Value |
|---|---|
| You enter | |
| Menu | option 4 |
| Input 1 | 360 |
| Input 2 | 6.5 |
| Input 3 | 300000 |
| Input 4 | 0 |
| Input 5 | 12 |
| The screen shows | |
N= | 360 |
I%= | 6.5 |
PV= | 300000 |
PMT= | -1896.2 |
FV= | 0 |
I PER= | 0.005416666667 |
How it's checked
6 test cases, each checked against an independent method. Replayed key by key on a virtual TI-84 Plus CE, they make 43 checks.
How E-Code checks every program
Run it or put it on your calculator
- Open the library in the TI-84 Plus CE calculator and pick “Time value of money solver (N, I%, PV, PMT, FV)” (TVM).
- Put it on your own calculator with a computer and a USB cable, or type it in by hand.
Related programs
- Compound interest calculator
- Loan amortization with extra payments
- Compare two loans (APR with fees)
- NPV, IRR, MIRR and payback
- Depreciation schedule: SL, 200% DB, SYD
All TI-84 Plus CE finance programs · All TI-84 Plus CE programs