---
title: "Safe Withdrawal Rate Calculator"
method: POST
path: "/v1/tools/safe_withdrawal_calculator"
---

# Safe Withdrawal Rate Calculator

`POST /v1/tools/safe_withdrawal_calculator`

## Request

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

Model portfolio longevity under the 4% rule, dynamic withdrawal strategies, and sequence-of-returns risk. Compare fixed, flexible, and guardrail withdrawal approaches. Client-side. Works offline. Zero PII.

**Tool URL:** https://ainumbers.co/tools/pf-137-safe-withdrawal-calculator.html
**AP2/Policy Mandate export:** yes

## Request body

- object

## Response `200`

Successful tool execution result

- object
  - `safeWithdrawalRate` number
  - `depletionYear` number
  - `successProbability` number
  - `mandateJson` 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)