Finance Formulas Glossary
Finance formulas are only useful when the compounding period, rate format, cash-flow timing, and fees are visible. Use this glossary as the reference layer for Toolarithm finance calculators.
Resource type
Glossary
Each card links to a live tool, guide, or reference page with matching canonical and structured data coverage.
Compound Interest
A = P(1 + r/n)^(nt), plus recurring deposits and compounding controls.
Open resourceLoan Payment
Fixed-payment amortization formula with APR, term, and principal.
Open resourceROI and CAGR
Return, annualized growth, cash flows, fees, and holding period checks.
Open resourceBudget and Debt
Income shares, payoff order, DTI, and credit-card payoff formulas.
Open resourceWho maintains this page
Ownership and review
Written and maintained by the Toolarithm editorial team. No review date is shown without a maintained editorial record. No independent professional review is claimed.
Methodology
Formulas are checked with worked examples and boundary cases. Timing, compounding, payment, and rounding assumptions remain visible; results are educational estimates, not financial advice.
Read the editorial methodologyDates and sources
Review dates change only after a substantive method or content check.
How to use this page
| Topic | Reference | Note |
|---|---|---|
| Simple interest | I = P x r x t | Use when interest does not compound during the period. |
| APY | (1 + r/n)^n - 1 | Converts nominal rate and compounding frequency into effective annual yield. |
| CAGR | (Ending / Beginning)^(1/years) - 1 | Shows smoothed annual growth, not year-by-year volatility. |
Finance Formulas Glossary questions
How should I use these resources with the live tools?
Start with the explanation page to choose the right method, then open the linked calculator, converter, or paper generator to produce the result. Toolarithm keeps source notes, assumptions, and related links close to the tool so users can check the output instead of treating a number or template as a black box.