TVMStack is a small set of financial calculators for the time value of money. Each one gives the answer and then shows the equation with your numbers in it, so you can check it by hand.
Free tools
- TVM Calculator solves N, I/Y, PV, PMT or FV from the other four, with payments at the start or end of each period and payments per year separate from compounding. Use it for loan payments, savings goals, doubling time and the rate hidden in an instalment offer.
- Japan FP Six Coefficients Calculator (Japanese version: FPの6つの係数) computes 終価, 現価, 年金終価, 減債基金, 年金現価 and 資本回収係数 for any rate and number of years, shows the value printed in the JAFP tables next to the exact one, and compares equal payment with equal principal loans.
Everything runs in your browser. Nothing you type is uploaded.
The app
The TVMStack app is planned as a paid app for iPhone, iPad, Mac and Android that adds cash-flow lists with NPV and IRR, schedules and exports. It is not released yet. See the app page for what is planned.