---
title: "Compound Interest Explorer"
method: POST
path: "/v1/tools/compound_interest_explorer"
---

# Compound Interest Explorer

`POST /v1/tools/compound_interest_explorer`

## Request

- Base URL: `https://ainumbers.co`
- URL: `https://ainumbers.co/v1/tools/compound_interest_explorer`
- Auth: none declared

Interactive compound growth calculator with tax-drag overlay, inflation adjustment, and fee impact. Model real vs. nominal returns across taxable, IRA, and Roth accounts. Client-side. Works offline. Zero PII. Zero API.

**Tool URL:** https://ainumbers.co/tools/pf-132-compound-interest-explorer.html
**AP2/Policy Mandate export:** yes

## Request body

- object
  - `principal` string
  - `monthly` string
  - `freq` string
  - `years` string
  - `rate` string
  - `fee` string
  - `inflation` string
  - `taxrate` string
  - `filing` string
  - `pss-code-out` string
  - `pss-code-in` string

## Response `200`

Successful tool execution result

- object

---

[API](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite.md) · [All operations](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/llms.txt) · [OpenAPI document](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/revisions/b462e4f5bb28?raw)