Estimate Transaction Fees

post

https://api.1money.com/v1/customers/{customer_id}/fees/estimate

Get estimated fees before executing a transaction.

Actions:

DEPOSIT: Deposit of assets
WITHDRAWAL: Withdrawal of assets
CONVERSION: Not supported - use /conversions/quote instead

Fee Calculation:

The fee is determined by combining action + asset:

DEPOSIT + Crypto asset (USDC, USDT, etc.) → No fee
DEPOSIT + Fiat currency (USD, EUR, MXN) → Fiat deposit fee
WITHDRAWAL + Crypto asset → Crypto withdrawal fee (includes gas)
WITHDRAWAL + Fiat currency → Fiat withdrawal fee

Notes:

Crypto withdrawal fees include network gas fees and may fluctuate
Fiat fees are fixed rate + percentage

Networks:

Crypto: ETHEREUM, POLYGON, ARBITRUM, AVALANCHE, BASE, BNBCHAIN, SOLANA, TRON
Fiat: US_ACH, US_FEDWIRE, US_RTP, SWIFT, CUBIX, BANK_TRANSFER, PIX_TRANSFER

Recent Requests

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Path Params

customer_id

string

required

Customer ID

Body Params

Request body for fee estimation

action

string

enum

required

Transaction action for fee estimation

DEPOSIT: Deposit of assets (crypto deposit, fiat deposit )
WITHDRAWAL: Withdrawal of assets (both crypto and fiat have fees)
CONVERSION: Not supported yet - use /conversions/quote instead
AUTO_CONVERSION: Not supported yet

The actual transaction type (crypto vs fiat) is determined by the asset field.

Allowed:

amount

string

required

Amount for fee calculation

asset

string

required

Stablecoin assets: USDC, USDT, PYUSD, RLUSD, USDG, USDP, EURC, MXNB, 1USD(1USD/USDC conversion only, deposit/withdrawal not supported)
Digital assets: BTC
Fiat currencies: USD

network

string

required

Responses

Language

Credentials

Bearer

OneMoney-HMAC-SHA256

URL

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Response

Click Try It! to start a request and see the response here! Or choose an example:

application/json

200

400Bad Request

401Unauthorized

422Unprocessable Entity - Invalid enum value (e.g., unsupported network or asset name)

500Internal Server Error