> ## Documentation Index > Fetch the complete documentation index at: https://cobo.com/payments/llms.txt > Use this file to discover all available pages before exploring further. # Estimate fees > This operation calculates fees for payment-related operations, including: - **Pay-in**: Fees for accepting payments - **Refunds**: Fees for refunding the payment - **Crypto payouts**: Fees for payouts in crypto - **Fiat off-ramp**: Fees for fiat currency transfers via off-ramp. The returned fees represent the charges that would apply if the operation were executed immediately. Note that actual fees may vary over time based on your usage volume and applicable fee rates. ```python Python theme={null} import cobo_waas2 from cobo_waas2.models.payment_estimate_fee201_response import ( PaymentEstimateFee201Response, ) from cobo_waas2.models.payment_estimate_fee_request import PaymentEstimateFeeRequest from cobo_waas2.rest import ApiException from pprint import pprint # See configuration.py for a list of all supported configurations. configuration = cobo_waas2.Configuration( # Replace `` with your private key api_private_key="", # Select the development environment. To use the production environment, change the URL to https://api.cobo.com/v2. host="https://api.dev.cobo.com/v2", ) # Enter a context with an instance of the API client with cobo_waas2.ApiClient(configuration) as api_client: # Create an instance of the API class api_instance = cobo_waas2.PaymentApi(api_client) payment_estimate_fee_request = cobo_waas2.PaymentEstimateFeeRequest( estimate_fees=[ cobo_waas2.PaymentEstimateFee( token_id="req_20251230150638", amount="500.00" ) ] ) try: # Estimate fees api_response = api_instance.payment_estimate_fee( payment_estimate_fee_request=payment_estimate_fee_request ) print("The response of PaymentApi->payment_estimate_fee:\n") pprint(api_response) except Exception as e: print("Exception when calling PaymentApi->payment_estimate_fee: %s\n" % e) ``` ```java Java theme={null} // Import classes: import com.cobo.waas2.ApiClient; import com.cobo.waas2.ApiException; import com.cobo.waas2.Configuration; import com.cobo.waas2.Env; import com.cobo.waas2.api.PaymentApi; import com.cobo.waas2.model.*; import java.util.Arrays; public class Example { public static void main(String[] args) { ApiClient defaultClient = Configuration.getDefaultApiClient(); // Select the development environment. To use the production environment, replace `Env.DEV` with // `Env.PROD defaultClient.setEnv(Env.DEV); // Replace `` with your private key defaultClient.setPrivKey(""); PaymentApi apiInstance = new PaymentApi(); PaymentEstimateFeeRequest paymentEstimateFeeRequest = new PaymentEstimateFeeRequest() .estimateFees( Arrays.asList( new PaymentEstimateFee().tokenId("req_20251230150638").amount("500.00"))); try { PaymentEstimateFee201Response result = apiInstance.paymentEstimateFee(paymentEstimateFeeRequest); System.out.println(result); } catch (ApiException e) { System.err.println("Exception when calling PaymentApi#paymentEstimateFee"); System.err.println("Status code: " + e.getCode()); System.err.println("Reason: " + e.getResponseBody()); System.err.println("Response headers: " + e.getResponseHeaders()); e.printStackTrace(); } } } ``` ```go Go theme={null} package main import ( "context" "fmt" coboWaas2 "github.com/CoboGlobal/cobo-waas2-go-sdk/cobo_waas2" "github.com/CoboGlobal/cobo-waas2-go-sdk/cobo_waas2/crypto" "os" ) func main() { paymentEstimateFeeRequest := *coboWaas2.NewPaymentEstimateFeeRequest([]coboWaas2.PaymentEstimateFee{*coboWaas2.NewPaymentEstimateFee("TokenId_example", "500.00")}) configuration := coboWaas2.NewConfiguration() // Initialize the API client apiClient := coboWaas2.NewAPIClient(configuration) ctx := context.Background() // Select the development environment. To use the production environment, replace coboWaas2.DevEnv with coboWaas2.ProdEnv ctx = context.WithValue(ctx, coboWaas2.ContextEnv, coboWaas2.DevEnv) // Replace `` with your private key ctx = context.WithValue(ctx, coboWaas2.ContextPortalSigner, crypto.Ed25519Signer{ Secret: "", }) resp, r, err := apiClient.PaymentAPI.PaymentEstimateFee(ctx). PaymentEstimateFeeRequest(paymentEstimateFeeRequest). Execute() if err != nil { fmt.Fprintf(os.Stderr, "Error when calling `PaymentAPI.PaymentEstimateFee``: %v\n", err) fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r) } // response from `PaymentEstimateFee`: PaymentEstimateFee201Response fmt.Fprintf(os.Stdout, "Response from `PaymentAPI.PaymentEstimateFee`: %v\n", resp) } ``` ```javascript JavaScript theme={null} const CoboWaas2 = require("@cobo/cobo-waas2"); // Initialize the API client const apiClient = CoboWaas2.ApiClient.instance; // Select the development environment. To use the production environment, replace `Env.DEV` with `Env.PROD` apiClient.setEnv(CoboWaas2.Env.DEV); // Replace `` with your private key apiClient.setPrivateKey(""); // Call the API const apiInstance = new CoboWaas2.PaymentApi(); const opts = { PaymentEstimateFeeRequest: CoboWaas2.PaymentEstimateFeeRequest.constructFromObject({ estimate_fees: [{ token_id: "req_20251230150638", amount: "500.00" }], }), }; apiInstance.paymentEstimateFee(opts).then( (data) => { console.log("API called successfully. Returned data: " + data); }, (error) => { console.error(error); }, ); ``` ## OpenAPI ````yaml post /payments/estimate_fee openapi: 3.0.3 info: title: Cobo Wallet as a Service 2.0 description: > The Cobo Wallet-as-a-Service (WaaS) 2.0 API is the latest version of Cobo's WaaS API offering. It enables you to access Cobo's full suite of crypto wallet technologies with powerful and flexible access controls. By encapsulating complex security protocols and streamlining blockchain interactions, this API allows you to concentrate on your core business activities without worrying about the safety of your assets. The WaaS 2.0 API presents the following key features: - A unified API for Cobo's [all four wallet types](https://manuals.cobo.com/en/portal/introduction#an-all-in-one-wallet-platform) - Support for 80+ chains and 3000+ tokens - A comprehensive selection of webhook events - Flexible usage models for MPC Wallets, including [Organization-Controlled Wallets](https://manuals.cobo.com/en/portal/mpc-wallets/ocw/introduction) and [User-Controlled Wallets](https://manuals.cobo.com/en/portal/mpc-wallets/ucw/introduction) - Programmatic control of smart contract wallets such as Safe{Wallet} with fine-grained access controls - Seamlessly transfer funds across multiple exchanges, including Binance, OKX, Bybit, Deribit, and more For more information about the WaaS 2.0 API, see [Introduction to WaaS 2.0](https://www.cobo.com/developers/v2/guides/overview/introduction). termsOfService: https://cobo.com/waas/tos/ license: name: Apache 2.0 url: https://www.apache.org/licenses/LICENSE-2.0.html contact: name: Cobo WaaS url: https://www.cobo.com/waas email: help@cobo.com version: 1.0.0 servers: - url: https://api.dev.cobo.com/v2 description: Development environment - url: https://api.cobo.com/v2 description: Production environment security: - CoboAuth: [] tags: - name: Organizations description: Operations related to Organizations. - name: Wallets description: Operations related to all wallets. - name: Wallets - MPC Wallets description: Operations related to mpc wallet. - name: Wallets - Exchange Wallet description: Operations related to exchange wallet. - name: Wallets - Smart Contract Wallets description: Operations related to smart contract wallet. - name: Transactions description: Operations related to all transactions. - name: Developers - Webhooks description: Operations related to webhooks. - name: Stakings description: Operations related to staking. - name: OAuth description: Operations related to OAuth. - name: Developers description: Operations related to developers. - name: AddressBooks description: Operations related to address books. - name: TravelRule description: Operations related to travel rule. - name: GraphQL description: Operations related to executing GraphQL queries and mutations. - name: PrimeBroker description: Operations related to prime broker. - name: AppWorkflows description: Operations related to app workflow. - name: FeeStation description: Operations related to fee station. - name: Payment description: Operations related to payment. - name: Batch Payouts description: Operations related to batch payouts. - name: Tokenization description: Operations related to tokenization. - name: AutoSweep description: Operations related to auto sweep. - name: Compliance description: Operations related to compliance. paths: /payments/estimate_fee: post: tags: - Payment summary: Estimate fees description: > This operation calculates fees for payment-related operations, including: - **Pay-in**: Fees for accepting payments - **Refunds**: Fees for refunding the payment - **Crypto payouts**: Fees for payouts in crypto - **Fiat off-ramp**: Fees for fiat currency transfers via off-ramp. The returned fees represent the charges that would apply if the operation were executed immediately. Note that actual fees may vary over time based on your usage volume and applicable fee rates. operationId: payment_estimate_fee requestBody: $ref: '#/components/requestBodies/paymentEstimateFeeBody' responses: '201': $ref: '#/components/responses/estimateFeePaymentResponse' 4XX: $ref: '#/components/responses/badRequestError' 5XX: $ref: '#/components/responses/internalServerError' security: - CoboAuth: [] - OAuth2: - payment_merchant.create components: requestBodies: paymentEstimateFeeBody: description: The request body for fee estimation. content: application/json: schema: type: object required: - estimate_fees properties: fee_type: $ref: '#/components/schemas/PaymentFeeType' estimate_fees: type: array description: >- A list of token IDs and amounts for which fees will be calculated. items: $ref: '#/components/schemas/PaymentEstimateFee' recipient_token_id: type: string description: >- The token ID that the recipient will receive. Required only when `fee_type` is `CryptoPayoutBridge`. transfer_via_va: type: boolean description: > For OffRamp payout, whether the payout is transferred to a registered bank account via a virtual account (VA) or directly. - `true`: The payout is transferred to a registered bank account via a VA (virtual account). - `false`: The payout is transferred directly to a registered bank account. example: false responses: estimateFeePaymentResponse: description: The request was successful. content: application/json: schema: type: object properties: data: type: array description: A list of estimated fees for the requested operations. items: $ref: '#/components/schemas/PaymentEstimatedFee' badRequestError: description: >- Bad request. Your request contains malformed syntax or invalid parameters. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' internalServerError: description: Internal server error. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' schemas: PaymentFeeType: type: string enum: - Order - Refund - CryptoSettlement - OffRampSettlement - CryptoPayout - CryptoPayoutBridge - OffRampPayout example: Order description: > The fee type. Possible values include: - `Order`: Fees for order processing. - `Refund`: Fees for refund processing. - `CryptoSettlement`: This fee type is deprecated. Please use `CryptoPayout` instead. - `OffRampSettlement`: This fee type is deprecated. Please use `OffRampPayout` instead. - `CryptoPayout`: Fees for crypto payouts. - `CryptoPayoutBridge`: Fees for crypto payouts with cross-chain bridging. - `OffRampPayout`: Fees for fiat off-ramp payouts. PaymentEstimateFee: type: object required: - token_id - amount properties: token_id: type: string description: The token ID for which fees will be calculated. amount: type: string description: The transaction amount for which fees will be calculated. example: '500.00' PaymentEstimatedFee: type: object required: - token_id - amount properties: token_id: type: string description: The token ID for which fees will be calculated. amount: type: string description: The transaction amount for which fees will be calculated. example: '500.00' commission_fee: $ref: '#/components/schemas/CommissionFee' bridging_fee: $ref: '#/components/schemas/BridgingFee' otc_fee: $ref: '#/components/schemas/OtcFee' ErrorResponse: type: object description: The response of a failed request. required: - error_code - error_message - error_id properties: error_code: type: integer description: >- The error code. Refer to [Error codes and status codes](https://www.cobo.com/developers/v2/api-references/error-codes) for more details. error_message: type: string description: The error description. error_id: type: string description: >- The error log ID. You can provide the error ID when submitting a ticket to help Cobo to locate the issue. example: 0b6ddf19083c4bd1a9ca01bec44b24dd CommissionFee: type: object required: - fee_amount properties: fee_amount: type: string description: >- The amount of the commission fee charged by Cobo for operations such as pay-ins and payouts, in USD. BridgingFee: type: object required: - fee_amount properties: fee_amount: type: string description: | The fee charged for bridging tokens to another chain. received_token_id: type: string description: The ID of the destination token received after bridging. received_amount: type: string description: The final amount of the token received after bridging. bridge_status: $ref: '#/components/schemas/PaymentBridgeStatus' OtcFee: type: object required: - fee_rate properties: fee_rate: type: string description: > The exchange rate used to convert cryptos to fiat currencies during off-ramp. The final fiat amount is calculated using the following formula: Final Fiat Amount = (Token Amount - Bridging Fee) × Exchange Rate Note: The actual fiat amount received may be lower due to additional bank transfer fees. token_id: type: string description: The ID of the token you want to off-ramp. PaymentBridgeStatus: description: | The current status of the payout bridge. Possible values include: - `Completed`: The payout bridge has been completed successfully. - `Failed`: The payout bridge has failed. type: string enum: - Completed - Failed example: Completed securitySchemes: CoboAuth: type: apiKey in: header name: BIZ-API-KEY description: > The API key. For more details, refer to [API key](https://www.cobo.com/developers/v2/guides/overview/cobo-auth#api-key). In the API playground, enter your [API secret](https://www.cobo.com/developers/v2/guides/overview/cobo-auth#api-secret), and your API key will be accordingly calculated. OAuth2: type: oauth2 description: >- The [Org Access Token](https://www.cobo.com/developers/v2/apps/org-access-tokens). Use this authorization method only if you are developing Cobo Portal Apps for installation and use across different organizations. flows: authorizationCode: authorizationUrl: https://auth.cobo.com/authorize tokenUrl: https://auth.cobo.com/oauth/token scopes: address_book.read: Read address book api_key.read: Read API key information callback.read: Read callback message callback.resend: Resend callback message wallet.create: Create wallet wallet.read: Read wallet information wallet.update: Update wallet information wallet.delete: Delete wallet information wallet.create_address: Create wallet address wallet.manage_utxo: Manage UTXO mpc_project.create: Create MPC project mpc_project.read: Read MPC project information mpc_project.update: Update MPC project information mpc_vault.create: Create MPC Vault mpc_vault.read: Read MPC Vault information mpc_vault.update: Update MPC Vault information mpc_key_group.create: Create MPC key group mpc_key_group.read: Read MPC key group information mpc_key_group.update: Update MPC key group information mpc_key_group.delete: Delete MPC key group information transaction.read: Read transaction information transaction.withdraw: Make withdrawals transaction.estimate_fee: Estimate transaction fee transaction.contract_call: Initiate contract calls transaction.message_sign: Initiate message signings transaction.stake: Stake assets transaction.unstake: Unstake assets transaction.unstake_withdraw: Withdraw unstaked assets transaction.manage: Manage ongoing transactions transaction.update: Update transaction notes travel_rule.read: Read travel rule information travel_rule.edit: Edit travel rule information webhook.read: Read webhook URLs/events webhook.edit: Edit webhook URLs webhook.resend: Resend webhook events payment_orders_payin.create: Create pay-in order payment_orders_payin.read: Read pay-in order information payment_orders_payin.update: Update pay-in order payment_orders_refund.create: Create payment refund order payment_orders_refund.read: Read payment refund order information payment_settlement.create: Create payment settlement request payment_settlement.read: Read payment settlement request information payment_merchant.create: Create payment merchant payment_merchant.read: Read payment merchant information payment_merchant.update: Update payment merchant payment_forced_sweep.create: Create payment force sweep request payment_forced_sweep.read: Read payment force sweep request information compliance_funds.refund: Refund compliance funds request compliance_funds.isolate: Isolate compliance funds request compliance_funds.unfreeze: Unfreeze compliance funds request compliance_funds.read: Read compliance funds request information compliance_kyt_review.update: Update KYT review status compliance_kyt_decisions.update: Update KYT decision status compliance_kyt_status.read: Read KYT screening status compliance_kya_screenings.create: Create KYA address screening requests compliance_kya_screenings.read: Read KYA address screening results ````