Adding a Referral Code After Sign-Up (2026): Deadlines at 17 Crypto Exchanges, 30 Days at Most, and 3 Close Early Once You Deposit or Trade

When people ask whether they can still add a referral code, they look at the day count first: 30 days at Binance and MEXC, 14 at Bybit and Pionex. But after going through the official rules of all 17 exchanges this site has codes for, I found that what usually closes first isn’t the day count but your first deposit or order. Binance requires that the account has “no deposit or trading activity”, BingX stops allowing it once you have deposited or bought crypto, and Pionex cuts the window from 14 days to 3 once you’ve placed an order. If you fund your account the day you sign up, your only chance to add a code at these exchanges is between sign-up and that first deposit.

Of the 17, only 6 let you add a code in your account yourself. OKX and BitoPro take applications that go through review; LBank and Bitfinex say no; the other 7 say nothing about it. So the conclusion is simple: enter the referral code when you sign up. If you’ve already missed it, the second half of this article covers the official rules for rebinding accounts that have been inactive for a long time.

Adding a referral code after sign-up at 15 international exchanges

Here are the rules for the international exchanges, sorted by whether you can add a code yourself. The “conditions that matter more than the days” column is the part I think readers most often miss.

A few notes:

• MEXC’s exception: if the system says your account does not support self-service referrer linking, MEXC’s official guide tells you to contact customer service. That is a channel MEXC itself announces, unlike the “support can switch it for you” claims you see online.
• OKX’s rebind application has no deadline, so you can try it at any time; people who don’t qualify see a notice as soon as they open the page. The conditions and a reason you can copy are in “How to change your OKX referral code”.
• “Not stated” does not mean you can add one. These 7 exchanges have no add-a-code feature in their help centers and no explicit ban either; this site doesn’t guess and simply recommends entering the code at sign-up.

Beyond the days: 3 conditions that decide whether you can add a code

Your first deposit or order

This is the one people trip over most. Binance’s 30 days apply only if the account has “no deposit or trading activity”; BingX has no day limit, but says that if your account has already deposited (including depositing or buying crypto) or has invited friends, it cannot add a referral code for you; Pionex says that if you have placed trade orders after registering, “you can only enter the referral code within 3 days.”

Put that on a real timeline: sign up, verify your identity, deposit, make your first trade. If it goes smoothly, that can all happen in a day. In that order, Binance and BingX close the door the moment you deposit, and Pionex leaves you 3 days after your first trade. If you want to add a code, do it before you deposit.

MEXC’s and Bybit’s official conditions don’t mention deposits or trades, so you can still add a code after depositing as long as you’re within the window.

The type of code

Not every code can be added later:

In other words, at Bybit and OKX a code a friend copied for you from the “Invite friends” page in the app cannot be added once you’ve missed sign-up.

Your account and identity

• Main account: Binance, MEXC and Bybit only allow it from the main (parent) account, not sub-accounts.
• Unused identity: Binance requires that your KYC information has not been used on another account in the past 180 days.
• One chance only: question 6 of Binance’s Referral Pro FAQ says “once the referral relationship has been established, it cannot be changed or removed”; MEXC, Bybit and BingX also say a bound code can’t be changed. Before adding a code, open the official sign-up page through its referral link and check the rate, because there’s no second try.

Past the deadline: official rebinding for inactive accounts

Once the window has closed, only 3 exchanges have official rules for rebinding inactive accounts, and all of them hinge on not having used the account for a long time:

Two more rules worth knowing:

• Binance’s rebind application: an account with trading history but no inviter can apply if it has completed KYC, uses the master account and traded under US$5,000 in the past 90 days. The relationship is only established once it reaches US$150,000 in trading volume within 30 days of applying, and requests are subject to review (“FAQ on Affiliates Rebind Feature”, 2026-09-28).
• Bybit accounts registered before September 2025: Bybit’s “Affiliate Program FAQ” (2026-10-29) only says that if a user doesn’t trade for 180 consecutive days, the affiliate relationship may be terminated. It doesn’t say how to rebind after that.

The same applies at all three: the exchange decides whether you qualify, and you can’t check it yourself. Step-by-step instructions and the common myths for each are in “How to change your Binance referral code”, “How to change your OKX referral code” and “How to change your Bybit referral code”. For the other 12 international exchanges, I found no official rules for rebinding inactive accounts.

The flip side: an OKX account with a deposit, trade, withdrawal or transfer within 180 days, or a Bybit account that never goes 180 consecutive days with under US$1 in trading volume, doesn’t count as inactive, so its referral relationship won’t be replaced on those grounds. Binance’s recall only applies to accounts that have never had an inviter.

Taiwan TWD apps: MAX lets you add one any time, BitoPro takes applications

The two Taiwan apps for buying crypto with New Taiwan dollars work very differently from the international exchanges, so they’re listed separately:

MAX is the only one of the 17 that lets you add a code yourself at any time, but the discount period counts from the registration date, so adding it a month late costs you a month of discount. BitoPro’s condition says no trades in the past 180 days; read literally, a new account that hasn’t traded yet also qualifies, and the review result decides. The steps and costs of buying USDT with New Taiwan dollars are in “How to buy USDT”.

Still within the window: where to add the code

If you qualify, use each exchange’s entry point below. This site’s codes are included so you can copy them:

• Binance: log in and open the binding page to enter the code. If the page says you already have a referral relationship or are not eligible for referral binding, you can’t add one; the steps and what each message means are in “How to change your Binance referral code”.

  Invitation codeJASONFIN

• MEXC: follow the “Self-Service Referrer Linking Guide” and enter the referral code or the referrer’s UID. How to check the rate is in “MEXC referral code”.

  Invitation codemexc-JASONFIN

• Bybit: Account page → “Account Info” → “Join an Affiliate’s Community”, then enter the affiliate code and a reason. If you don’t see the entry, you don’t qualify. This site’s Bybit code offers Bybit’s official sign-up rewards; details in “Bybit referral code”.

  Invitation codeJASONFIN

• BingX: in the app, tap your profile picture on the home screen, then “My Inviter” on the settings page; on the website it’s on the “Account & Security” page. See “BingX referral code”.

  Invitation codeJASONFIN

• Pionex: Pionex says you can add the code in the app or on the website but doesn’t say where the entry is. An overview of the exchange is in “Pionex review”.

  Invitation codeJASONFIN

Not signed up yet: enter the code when you sign up

After the tables above, the easiest approach is simply this: enter the referral code on the sign-up page itself, and check the offer shown on the official sign-up page before you submit. How to verify each exchange’s codes yourself, and what the high rates advertised online really are, is covered in “Binance referral code”, “OKX referral code”, “Bitget referral code”, “KuCoin referral code” and “LBank referral code”. How the fee rebate is calculated and how to confirm it’s working is in “Crypto exchange fee rebates”.

If a family member or friend is already planning to open an exchange account, you can send them this article so they know before signing up that a missed code is hard to add later. Ask them to sign up in their own name and use the account themselves, and not to open an account with someone else’s identity.

Any crypto you keep on an exchange carries that exchange's own risk, so weigh it yourself; only coins in a cold wallet you control leave the risk in your own hands.

This site’s referral codes are not for residents of the UK or Hong Kong; please follow the laws where you live.