Straight answer: Buy crypto first. You do not need to deposit crypto first. After verification is complete, the fastest path is to use OKX's "Express Buy" or "C2C Buy" feature to buy crypto directly with fiat money.
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These are two different entry points. Which one you choose depends on your funds and trading habits.
Core Differences Between the Two Paths
| Path | Best for | Steps | Fund flow |
|---|---|---|---|
| Express Buy / C2C Buy | Beginners, small amounts, or users who want to buy crypto directly with fiat | Choose payment method → Pay → Crypto goes to your Funding Account | Fiat goes from your bank card or payment app directly to the seller |
| Deposit first, then trade spot | Users who already hold crypto, want to set their own price, or trade large amounts | Deposit USDT/BTC from an external wallet → Funds arrive in Funding Account → Transfer to Trading Account → Place an order | Crypto moves from an external wallet into your Funding Account |
Key difference: Express Buy is a one-step process. The exchange of fiat for crypto is completed outside the platform. Deposit first, then trade means you first bring existing crypto into the platform, then enter the trading market to operate.
Case A: Use "Express Buy" (Recommended for Beginners)
[What to do] Directly buy crypto with fiat money, such as CNY, USD, or others.
[How to do it]
Open the OKX App home page, tap "Buy Crypto" → "C2C Buy" or "Express Buy".
Choose the crypto you want to buy, such as USDT, and your payment method, such as Alipay, WeChat, or bank card.
Enter the amount and pay using the seller's account details shown on the platform.
Key step: After paying, be sure to return to the order page and tap "I Have Paid", then wait for the seller to release the crypto.
[Completion standard] The crypto you bought appears in your "Funding Account" balance. It usually arrives within a few minutes.
Case B: Use "Deposit First, Then Trade" (For Users Who Already Hold Crypto)
[What to do] Transfer crypto you hold in another wallet or exchange into OKX, then use it to trade on the spot market.
[How to do it]
Open the OKX App, tap "Assets" → "Deposit", choose the coin and network, and copy the deposit address.
Go to your external wallet and send the crypto to that address.
After the crypto arrives, it goes to your Funding Account by default. To trade on the spot market, you must first transfer it to your Trading Account.
Transfer path: Assets → Transfer → From "Funding Account" to "Trading Account" → Enter the amount and confirm.
[Completion standard] Your Trading Account available balance shows the coin you just transferred, and you can place an order in the spot trading interface.
Common Failure Reasons
Reason 1: After C2C payment, you forgot to click "I Have Paid"This is the most common beginner mistake. You paid but did not return to the order page to confirm. The order may time out and be canceled automatically. Your money will be refunded, but you lose time.
Reason 2: You want to trade spot, but your crypto is still in the Funding Account Assets in the Funding Account cannot be used directly for spot trading. You must first transfer them to the Trading Account. If you operate directly in the spot interface, you may see "insufficient available balance".
Reason 3: You selected the wrong network when depositing When transferring crypto from an external wallet into OKX, you must choose the correct network, such as ERC20, BSC, or TRC20. If you choose the wrong chain, the assets may be lost, and recovery is very complicated.
Risk reminder: In C2C trading, payment must be confirmed through the platform order chat. Anyone who asks you to transfer money privately is a scam. Do not write sensitive words like "BTC", "USDT", or "C2C" in the payment note, because this may cause the other party's bank account to be frozen. In addition, after buying crypto through C2C, you may trigger the T+N safety protection mechanism, which limits selling or withdrawing for 1-7 days.
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How to Check That the Operation Is Complete
No matter which path you take, go to "Assets" → "Funding Account" and check the balance and transaction records. If the crypto has arrived, the operation was successful. If you paid for C2C but have not received the crypto after more than 30 minutes, go to the order details page and tap "Appeal", submit your payment proof, and customer support will step in.
