FinanceKit

Loan, savings, NPV, IRR and ROI calculations in one fast, stateless API.

betaFinanceAvailable on RapidAPI

A complete financial-calculation suite: amortizing loan/mortgage schedules, compound-interest and savings projections, net present value (NPV), internal rate of return (IRR) and return on investment (ROI). Deterministic pure math, currency-agnostic, no database and nothing stored - the same input always returns the same numbers.

Base URL: https://69.62.119.122.nip.io/finance

Quick start

curl https://69.62.119.122.nip.io/finance/health

Endpoints

GET/healthHealth check
POST/v1/loanAmortizing loan / mortgage
POST/v1/compound-interestCompound interest / savings projection
POST/v1/npvNet present value
POST/v1/irrInternal rate of return
POST/v1/roiReturn on investment

Pricing

BASIC
Free
500 requests / month
PRO
$9.99 /mo
50,000 requests / month
ULTRA
$29.99 /mo
750,000 requests / month

Plans are billed through RapidAPI — subscribe there to get your API key.

Available on RapidAPI.

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