Finance Calculator API
Drop production-grade financial math into any app, website, or spreadsheet - without building and testing the formulas yourself. Pure JSON in, pure JSON out, with fast, deterministic results and no third-party data dependencies. What you can calculate - Loan amortization - monthly payment, total interest, payoff timeline, and a full month-by-month schedule (with optional extra principal…
1 subscribers
7 endpoints
The in-depth APIMemo review for this API hasn't been published yet —
the data below comes straight from the public marketplace listing.
Finance Calculator API endpoints
| Method | Endpoint | Description |
|---|---|---|
| meta | ||
| GET |
health_health_get /health |
|
| loans | ||
| POST |
mortgage_mortgage_post /mortgage |
Full monthly housing cost: principal, interest, taxes, insurance, HOA and PMI. |
| POST |
loan_amortization_loan_amortization_post /loan/amortization |
Monthly payment, total interest, payoff timeline and a full amortization schedule. |
| investing | ||
| POST |
irr_investment_irr_post /investment/irr |
The discount rate that makes NPV zero for a series of cashflows. |
| POST |
compound_interest_investment_compound_interest_post /investment/compound-interest |
Future value of savings/investments with optional recurring monthly contributions. |
| POST |
roi_investment_roi_post /investment/roi |
ROI and net profit; annualized ROI (CAGR) when a holding period is given. |
| POST |
npv_investment_npv_post /investment/npv |
Discount a series of cashflows to today's value at a given rate. |
Finance Calculator API pricing
| Plan | Price | Rate limit | Quotas |
|---|---|---|---|
| BASIC | Free | — |
|
| PRO | $9.99 / month | — |
|
| ULTRA | $29.99 / month | — |
|
| MEGA | $99 / month | — |
|
