---
title: "Estimate Network Fee"
method: POST
path: "/payments/estimate-network-fee"
tags: ["Withdrawals"]
---

# Estimate Network Fee

`POST /payments/estimate-network-fee`

## Request

- Base URL: `https://api.breet.io/v1`
- URL: `https://api.breet.io/v1/payments/estimate-network-fee`
- Auth: API key in header `x-app-id` and API key in header `x-app-secret` and API key in header `X-Breet-Env`
- TypeScript: <https://skmtc.dev/breet/apis/breet-public-api/docs/payments/estimate-network-fee/post.ts> (a function with typed inputs; its response is checked against the schema)

Estimate the network fee for a UTXO withdrawal (BTC, LTC, DOGE, BCH) at each fee level. Estimates are cached for 60 seconds and are not a locked quote - the fee is re-estimated when the withdrawal is submitted.

## Request body

- object: Send amount or cryptoAmount, never both. One of them is required.
  - `token` 'BTC' | 'LTC' | 'DOGE' | 'BCH', required: UTXO token to withdraw. Stablecoins are not supported here - their fee is flat per network and is returned by GET /payments/supported-assets-info.
  - `amount` number: USD value, up to 2 decimal places. Send amount or cryptoAmount, never both.
  - `cryptoAmount` number: Value in crypto units, up to 8 decimal places. Send amount or cryptoAmount, never both.
  - `walletAddress` string, required: Destination address. The estimate depends on it, so use the address you intend to withdraw to.

## Response `200`

Fee estimates returned successfully

## Other responses

- `400`: Fee or price could not be resolved
- `401`: Invalid or missing API credentials
- `422`: Request validation failed — check the errors array for field-level details
- `429`: Too many requests — retry after the period indicated in the Retry-After header
- `500`: An unexpected server error occurred

## Changes

- **2026-11-03** `41450811e16e`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/breet/apis/breet-public-api/changes/payments/estimate-network-fee/post.md)

---

[API](https://skmtc.dev/breet/apis/breet-public-api.md) - [All operations](https://skmtc.dev/breet/apis/breet-public-api/llms.txt) - [OpenAPI document](https://skmtc.dev/breet/apis/breet-public-api/revisions/a2559b3ef61f?raw)