---
title: "Compound interest projection"
method: GET
path: "/api/v1/calculate/compound-interest"
---

# Compound interest projection

`GET /api/v1/calculate/compound-interest`

## Request

- Base URL: `https://everycalc.xyz`
- URL: `https://everycalc.xyz/api/v1/calculate/compound-interest`
- Auth: none declared

Future value with monthly contributions and monthly compounding. Results match the interactive calculator at everycalc.xyz; every response includes a calculator_url deep link to it.

## Query parameters

- `principal` number
- `monthly_contribution` number
- `annual_rate_pct` number, required
- `years` number
- `include_schedule` boolean

## Response `200`

Calculation result.

## Other responses

- `400`: Invalid input.

---

[API](https://skmtc.dev/everycalc/apis/everycalc-api.md) · [All operations](https://skmtc.dev/everycalc/apis/everycalc-api/llms.txt) · [OpenAPI document](https://skmtc.dev/everycalc/apis/everycalc-api/revisions/a4bd5db0868a?raw)