Nghiên cứu đã kiểm chứng nguồn: OKX

The four ways to buy, side by side

OKX's own help centre describes each route separately, so here they are in one table. Fees and limits are those OKX publishes; anything OKX only shows inside a logged-in checkout is marked as such.

One more route sits under Trade > Buy and sell: third-party fiat gateways. These are outside providers that partner with OKX; each one runs its own verification and sets its own limits, and OKX says most settle on-chain in 1–30 minutes.

Before you start

You need a registered, verified OKX account. OKX's P2P page says anyone who has verified an email or phone number and completed identity verification can trade there, and the third-party gateway page adds a 2FA method and a funds password in security settings. P2P has one more rule worth knowing in advance: the bank card or account you pay from must be in the verified account holder's own name, and OKX does not support paying with payment methods from other countries. If you have not opened the account yet, our OKX exchange profile walks through sign-up and links the verification guide.

Route 1: Buy with a card or payment method

In the OKX app, open the menu, choose Buy, pick the crypto, enter either the cash amount you want to spend or the crypto amount you want, then pick a payment option on the Pay with page. OKX states that the available crypto, cash currencies, payment methods, limits and fees all vary by account market, and that you should use what checkout shows rather than a figure from an older article or screenshot.

Three practical points from OKX's Buy FAQ:

• If a payment method is missing, it is usually your account market, verification status, the amount or a risk-control requirement. Support cannot switch on a method that checkout does not show.
• If 3DS card verification fails, check the order list before retrying. Submitting the same payment again can create several temporary authorisation holds on your card.
• A pending order is still processing. Do not open a duplicate; wait for the time shown in the order details.

Route 2: P2P Express or P2P Trading

P2P is the route most people outside the US and EU use to turn local currency into USDT. P2P Express matches you automatically: enter the amount, choose the crypto and a payment method, review the preview screen while the quote is locked, then pay. P2P Trading lets you choose a specific ad, which is useful when you want a particular bank or a seller with a long completion record.

In both, OKX holds the seller's crypto as soon as the order is created and releases it when the seller confirms your payment. OKX's warning is specific: do not pay if the order is about to time out, because the seller gets the held coins back when the timer reaches zero if you have not marked the payment complete. Keep all chat inside the OKX order window; OKX uses it as evidence in disputes.

OKX charges no service fee for P2P and lets you trade from 1 USDT. The real cost is the seller's price compared with the market, plus whatever your bank or wallet charges. We measured those spreads by currency in how to deposit on OKX. One catch: crypto bought through P2P can be held under OKX's T+N protection, which can restrict selling, withdrawals and DEX trading for 3, 7 or 15 days. The page shows the duration before you commit, and OKX says you can cancel and place a new order if you do not want the hold.

Route 3: Convert

Convert is a one-click swap at a quoted price. OKX says it uses a quoting model instead of order matching, so there is no transaction fee and no slippage, but the quoted price differs from the spot price. That difference is the cost. The minimum is close to zero, which makes Convert useful for clearing small leftovers.

Two limits matter. BTC and ETH can only be converted with each other or with stablecoins, so you cannot convert a small token straight into BTC. And Convert does not touch fiat; it only swaps crypto for crypto. To use it as a buying route, first get USDT or USDC in through Buy, P2P or a deposit.

Route 4: Spot market or limit orders

Spot is where price and cost are most visible. Move USDT into your trading account, open the pair (for example BTC/USDT), and choose a market order to fill now or a limit order to name your price. OKX's fee schedule for a regular account on 13 October 2026 was 0.080% for makers and 0.100% for takers.

What that means in money: buying $1,000 of BTC with a market order costs $1.00 in fees. A limit order that rests on the book and fills as a maker costs $0.80. If you do this monthly, the difference between paying a quoted Convert spread and a 0.08% maker fee adds up over a year.

How to cut the fee on every spot buy

048%. 00. Current OKX promotions are listed on our activities page.

Which route should you pick?

• First time, small amount, card works in your country: Buy. It is the fastest way in; accept that the checkout price includes the method's cost.
• Paying in local currency through a bank or e-wallet: P2P Express, then switch to P2P Trading once you know which sellers and banks you prefer.
• Already holding USDT and buying more than a few hundred dollars: Spot, with a limit order where you can wait.
• Tidying small balances: Convert.

If you are deciding between exchanges rather than routes, our Binance vs OKX comparison sets their fees side by side.

Quick answers

Can I buy crypto on OKX without identity verification? No. P2P, the Buy flow and third-party gateways all require a verified account.

Does OKX charge a fee for P2P? No service fee. You pay the seller's price, and your bank or wallet may charge a transfer fee.

Is Convert free? There is no transaction fee and no slippage, but the quote differs from the spot price, and that gap is what you pay.

Can I convert USDT to cash with Convert? No. Convert only swaps crypto for crypto. Use Sell, P2P or a third-party gateway to cash out.

Why is my P2P purchase locked? OKX's T+N risk-control hold can restrict selling, withdrawals and DEX trading for 3, 7 or 15 days. The length is shown before you place the order.

How fast do third-party gateway purchases arrive? OKX says most settle on-chain in 1–30 minutes. Some providers settle off-chain from OKX, and you receive the crypto once your payment completes.