How to Buy Sei (SEI)
How to buy SEI in 2026: open an account on Binance, complete KYC, deposit fiat, place an order, and withdraw to self-custody. Step-by-step with security tips.
Sei (SEI) is a fast layer-1 with a parallelised EVM, designed for trading and high-frequency apps. This guide walks through buying SEI on a regulated exchange and moving it to a wallet you control.
What you'll need (prerequisites)
- Government-issued ID
- Bank account or debit card
- Email address
- Authenticator app for 2FA
Recommended for this tutorial
Tools and accounts referenced in the steps below:
Step-by-step
-
Step 1: Open an account on Binance
Visit the official Binance website (also available: Coinbase, Kraken). Click "Sign up", enter your email and a strong password, then confirm the link sent to your inbox.
-
Step 2: Verify your identity (KYC)
Regulated exchanges require ID verification before fiat deposits. Upload a government-issued ID (passport or driver's licence) and a selfie. Verification usually completes in minutes, occasionally up to 24 hours.
-
Step 3: Enable two-factor authentication
In your security settings, enable 2FA with an authenticator app (Authy, Google Authenticator or Aegis). Avoid SMS 2FA — it is vulnerable to SIM-swap attacks. Save the recovery codes offline.
-
Step 4: Deposit fiat
Link a bank account or debit card, or use SEPA / ACH / Faster Payments. Bank transfer is cheapest; card deposits add a 1.5–4% surcharge. Card deposits credit instantly; bank transfers take hours to days.
-
Step 5: Place a market or limit order for SEI
Go to the SEI/USD (or SEI/USDT) pair. A market order fills immediately at the best available price; a limit order only fills at the price you set — better for larger orders to avoid slippage.
-
Step 6: Withdraw to self-custody
Transfer your SEI to a wallet you control — Compass, Keplr or MetaMask (Sei EVM). Select the native Sei network when withdrawing, and send a small test transaction first to confirm the address before moving the full balance. Exchanges are custodial: not your keys, not your coins.
Swap instantly, no account
Already hold crypto? Skip the exchange sign-up and swap straight into SEI — a non-custodial, third-party exchange, no account required. The conditional-KYC and affiliate disclosures are rendered inline in the widget and are not optional.
Common errors and fixes
- KYC delayed >24h. Re-upload a clearer photo of your ID with the corners visible and good lighting. Contact support if it still takes longer than 48 hours.
- Bank transfer rejected. Some banks block transfers to crypto exchanges. Try a different bank, a debit card, or an on-ramp like MoonPay / Banxa.
- Withdrawal address rejected. Confirm you copied the full address and selected the native Sei network — sending on the wrong network can lose the funds permanently.
- 2FA code rejected. Your phone clock and the authenticator must be in sync. Re-sync the device clock, or restore 2FA from your recovery codes.
- High withdrawal fee. Compare the exchange's flat SEI withdrawal fee against your order size; batch withdrawals to amortise the fixed cost.
FAQ
What is the cheapest way to buy SEI?
Bank transfer (ACH / SEPA / Faster Payments) on a major exchange like Binance is cheapest, with fees typically under 0.5%. Card deposits add 1.5–4%. P2P platforms can be cheaper but carry more counterparty risk.
Do I need to do KYC to buy SEI?
On regulated exchanges (Binance, Coinbase, Kraken), yes — KYC is required for fiat on-ramps. You can also acquire SEI via a DEX using stablecoins without KYC, but that requires crypto already in self-custody.
Should I leave SEI on the exchange?
For small amounts (< $1,000) or active trading, it is fine. For larger amounts or long-term holding, withdraw to self-custody (Compass, Keplr or MetaMask (Sei EVM)). "Not your keys, not your coins."
What is the minimum amount of Sei I can buy?
Most exchanges allow purchases from about $1–5 worth of SEI. SEI is divisible to 6 decimals, so fractional purchases are normal.
Can I buy SEI with a credit card?
Yes, but card issuers often code crypto buys as a cash advance, triggering high APR and fees. A debit card or bank transfer is usually safer and cheaper.