Transak Stream - On Ramp

Turn fiat into crypto automatically with virtual bank accounts

Overview

Transak Stream – On-Ramp makes it easy to turn fiat money into crypto automatically. When funds are sent to a virtual bank account, Transak converts them into crypto and delivers the assets directly to a predefined wallet—no user action needed at the time.

Transak handles everything behind the scenes: providing local virtual bank accounts, tracking incoming payments, converting funds to crypto, and offering simple APIs so partners can easily manage transactions and reconciliation.

Ideal for — Payroll platforms, fintech companies, and wallets that want a seamless fiat in → crypto out experience running in the background, instead of a one-time checkout flow.

Key Characteristics & Features

Virtual bank accounts per user

Create named VBAs in supported fiat currencies (EUR, GBP, USD, INR, etc). Each VBA is linked to a specific wallet address, crypto asset, and network to define how incoming fiat should be converted.

Automatic on-ramp order creation

When fiat is received into a VBA, Transak automatically creates an on-ramp order, generates a quote, reserves the wallet, and dispatches crypto to the configured wallet.

Risk, compliance, and limits

Standard KYC is required for end users. Stream On-Ramp is explicitly scoped to bank transfers and excludes direct B2C app flows.

How the flow works

User and partner setup

The partner ensures the user is authenticated and verified. This includes user authentication and completion of required KYC checks, either directly through Transak or via supported reliance mechanisms.

Create a virtual bank account

Partner can create a Virtual Bank Account (VBA) that is assigned to the user and mapped to a predefined crypto destination, including the wallet address, asset, and network.

Partner/User sends fiat to the VBA

The Partner/User needs to send fiat to the assigned Virtual bank account using a standard bank transfer method supported in their region (SEPA, Faster Payments, ACH, wire, IMPS, etc).

User receives crypto in wallet address

Once the payment is received and confirmed, Transak automatically converts the fiat amount into the configured crypto asset and sends it to the mapped wallet address.

What are the use cases?

Payroll to stablecoin

The user or partner provider wants payouts in stablecoins, but the entity and provider do not want to touch crypto or overhaul payroll systems.

Configure payout

User configures a crypto payout method (token, chain, wallet) once in the partner UI.

Create VBA

Transak creates an employee-named VBA in local contract currency (EUR, GBP, USD, INR, etc) via Stream On-Ramp.

Send salary

User sends salary to that VBA as usual. Transak auto-converts the configured portion to stablecoin (e.g., USDC on Base) and sends it on-chain to the user’s wallet address created through Transak.

Track orders

Partner receives webhooks with status, tx hash, and reporting fields for order tracking.

Recurring deposit-to-crypto for wallets/exchanges / DApps

Streamed deposits

Wallets or exchanges can offer “streamed deposits” where users receive regular bank transfers into a VBA.

Automatic accumulation

Crypto automatically accumulates in the user’s self-custodial or exchange wallet without having to initiate each purchase.

How to integrate?

Whitelist Your API Key & Enable Stream On-Ramp

Action
Follow the steps in the Need help in Integration section
Request API key whitelisting and ask to enable Transak Stream – On-Ramp for your API key
Share your public IP addresses with Transak for whitelisting to use our APIs in your backend

User Authentication

You can use either of the following authentication options:

Option	Description
White-label Auth	Use the standard Transak authentication flow to generate a user access token. Partners can do this by calling the Send User OTP API followed by the Verify User API to generate the access token. Learn more
Auth Reliance	Use Auth Reliance by passing these headers with every request: `x-user-identifier` and `x-access-token`

Please refer to the tutorial on how to create partner access token.

User KYC

KYC is a mandatory step in compliance with regulatory requirements. Each user should be Standard KYC Approved before the creation of Virtual Bank Account. You can use either of the following KYC options:

Option	Description
White label KYC	Partners can collect the required KYC information on their end and then forward it to Transak for review and approval. Learn more: Whitelabel KYC
KYC Reliance via Sumsub	Partners can share their KYC data from their platform with Transak using Sumsub. Learn more: KYC Reliance Guide

Create a Virtual Bank Account (VBA)

Call the Create VBA API to generate a virtual bank account that is linked to a crypto wallet.

Send Fiat Funds to the VBA

Use the virtual bank account details to send fiat payments. Incoming funds are automatically converted to crypto and sent to the linked wallet.

Integration Options

Transak Stream – On-Ramp is an API-only product. Integrate via our backend APIs:

Whitelabel API

Integrate our APIs in your backend to build a fully custom UI and user journey.

Supported Fiat Currencies

Virtual bank accounts can only be created for the following fiat currencies and supported payment methods:

Fiat Currency	Payment Methods
EUR	SEPA/SEPA Instant Bank Transfers
GBP	Faster Payments
INR	IMPS, NEFT, RTGS
USD	Wire, ACH (Coming Soon)

API Overview

Create VBA

Creates a Virtual bank account that auto-converts fiat to crypto and sends to the predefined wallet address.

Get VBA List

Lists all virtual bank accounts of a user created under your partner account, along with their status and configuration details.

Get VBA by ID

Retrieves the complete details of a specific virtual bank account, including its fiat setup, crypto destination, and current status.

Update VBA

Updates the configuration of an existing virtual bank account, including the linked wallet address, crypto asset, network, and related payout details.

Delete VBA

Delete an existing virtual bank account, preventing it from receiving any further incoming fiat transfers.

Add Remitter Account

Adds an approved source bank account for transactions (Only applicable for INR fiat currency).

Update Remitter Account

Updates an approved source bank account for transactions when sender account details need to be changed (Only applicable for INR fiat currency).

Transak Stream - On-Ramp APIs are to be called only from the partner backend and subjected to the whitelisting of partner IP addresses. Direct API calls from the frontend apps are not supported.