2026 OKX Referral Code [31999414] Mobile + PC Tutorial: How to Fill It In with Zero Errors and Get the Highest Rebate

Eligibility check: New OKX accounts only. Existing accounts cannot add code 31999414. If you have never registered, you are eligible. If you previously registered without a code, the only workaround is to create a brand-new account with a different email/phone and complete KYC again.

Do not use a US VPN or an IP address from a restricted jurisdiction. OKX compliance rules require you to be in a supported region. Referral code 31999414 works globally in supported markets.

The code does not require you to deposit a minimum amount. It does not lock your funds. It simply marks your UID as referred. Some traders confuse this with a coupon that expires. It is not a one-time coupon; it is a structural fee tier. Once applied, every trade you execute through spot, margin, or perpetual futures will automatically show the discounted fee.

Investment logic: Lower transaction costs increase your net expectancy per trade. If your strategy has a 0.1% edge, a 0.02% fee reduction can be the difference between a winning and losing month.

1. Download the official OKX app from the Apple App Store or Google Play. Do not use third-party APK files; many are bundled with malware or altered referral codes.
2. Open the app and tap Sign Up. On the first screen, you may see the option to enter an invite code immediately. If not, proceed to email/phone registration and watch for the “Referral ID / Invite Code” field before final submission.
3. Enter your email or phone number. Then in the invite code field, type exactly 31999414. Do not add spaces, hyphens, or extra digits. The system auto-trims only if the field is entered correctly, but manual errors can invalidate the discount.
4. Complete the password and security verification. Make sure the invite code remains visible on the confirmation screen. If the field disappears or shows “optional,” stop and restart. Some app versions hide the invite field unless you tap “Have a referral code?”—tap that and enter 31999414.
5. Finish SMS or email verification. After success, do not skip KYC. Complete identity verification to unlock full trading and fee rebate functionality. The code is already bound at this point, but KYC confirms your account for withdrawal.

Common mobile pitfall: auto-fill keyboards sometimes insert a trailing space. Delete it. A trailing space can cause the OKX backend to register the code as “31999414 ” and fail the association. Always visually confirm there are no extra characters before tapping submit.

1. Open a clean browser session. Avoid using private mode with extensions that rewrite cookies. Type https://okx.com/join/31999414 directly into the address bar. This link automatically pre-fills the referral code, reducing manual error risk. If you prefer to visit okx.com and register manually, ensure you manually type 31999414 in the “Referral Code” field.
2. Choose email or phone registration. Enter a valid email address you control. Click “Sign Up.”
3. On the password screen, look for a box labeled “Referral Code” or “Invite Code.” If you clicked the direct link, it should already show 31999414. If it is blank, type 31999414. Do not use any other code from unknown websites.
4. Complete the puzzle slider or email verification code. Then agree to the terms. Before clicking final confirmation, screenshot the page showing the code.
5. After account creation, log in and go to “Profile” > “Fee Rate” or “My Fees.” You should see a note or a discounted rate. Compare with OKX’s standard schedule to confirm 20% rebate is active.

If the code fails to appear, clear cookies and use the full URL again. Do not proceed with registration if the field remains blank; instead contact OKX support or restart in incognito mode.

After signing up, wait 5-10 minutes, then check your fee schedule. In the OKX app, go to Profile → Fee Rate. On the website, click your avatar and select Fee Rate. The displayed maker/taker fees should already reflect a 20% reduction compared to the default tier. Example: if standard taker fee is 0.050%, your rate should be 0.040%. If you see 0.050% or higher, contact support immediately with your screenshot.

Troubleshooting: If the rebate is missing, verify you entered 31999414 with no spaces. Some users accidentally enter 31999441 or 3199941. The correct sequence is 3-1-9-9-9-4-1-4. If you used an old account, the rebate cannot be added. The only solution is new account with new email/phone.

Last year, a trader I’ll call Daniel registered on OKX through a random search result and skipped the invite code. He traded perpetual futures with an average monthly volume of $180,000. His monthly taker fee before any VIP discounts was about $90. Because he had no 20% rebate, he paid $1,080 in fees over 12 months. A colleague of his registered through code 31999414 with identical volume and paid $864 in the same period—$216 less. Over the next two years with growing volume, the gap is projected to exceed $840. This is not a hypothetical; it is simple arithmetic. By taking five extra seconds during signup, Daniel would have preserved that capital for compounding.

Advanced fee strategy: Combine the 20% lifetime rebate with OKX’s native VIP tier discounts if your 30-day trading volume exceeds $100,000. The rebate stacks on top of VIP maker/taker reductions for an even lower effective cost. Do not confuse the referral rebate with one-off deposit bonuses. Both can coexist, but the lifetime rebate is the structural advantage.

Risk warning 1: Crypto assets are volatile. A 20% fee rebate improves your cost basis but does not protect you from price crashes. Never trade more than you can afford to lose. Fee savings should be treated as a long-term efficiency gain, not a signal to increase position size.

Risk warning 2: Only use official OKX domains and app stores. Scam websites and fake APKs often display a similar referral code field but steal your credentials. Always check the SSL certificate and the exact URL: okx.com/join/31999414. Bookmark it and avoid clicking unknown links.

Risk warning 3 (critical): Referral codes cannot be applied after KYC is complete or after the first deposit is made. If you already have an OKX account and try to “swap” to a different code by contacting support, the request will be rejected. Always create a fresh account with a new email and phone if you are unsure. Enter 31999414 only during the initial signup flow, never after. If you rush and skip it, you permanently forfeit the 20% lifetime rebate.