diff --git a/CHANGELOG.md b/CHANGELOG.md
index 15604eeb..1501adf7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ Version changes are pinned to SDK releases.
 ## [1.26.4]
 
 - Respect Exchange.skipRpcConfirmation everywhere. ([#384](https://github.com/zetamarkets/sdk/pull/384))
+- New util isAffiliateCodeAvailable(). ([#382](https://github.com/zetamarkets/sdk/pull/382))
 
 ## [1.26.3]
 
diff --git a/src/cross-client.ts b/src/cross-client.ts
index dddca6b5..c32a4e40 100644
--- a/src/cross-client.ts
+++ b/src/cross-client.ts
@@ -710,6 +710,10 @@ export class CrossClient {
   ): Promise<TransactionSignature> {
     let tx = new Transaction();
 
+    if ((await this.hasReferrerAccounts()) == true) {
+      throw Error("User already has a referrer account!");
+    }
+
     if (this._accountManager === null) {
       console.log(
         "User has no cross margin account manager. Creating account manager..."
@@ -1244,6 +1248,71 @@ export class CrossClient {
     return txId;
   }
 
+  public async hasReferrerAccounts(): Promise<boolean> {
+    // Firstly, close all referrer accounts
+    let referrerPubkeyAccountAddress = utils.getReferrerPubkeyAccount(
+      Exchange.programId,
+      this.publicKey
+    )[0];
+    let referrerPubkeyAccount =
+      await Exchange.program.account.referrerPubkeyAccount.fetchNullable(
+        referrerPubkeyAccountAddress
+      );
+    return referrerPubkeyAccount != null;
+  }
+
+  public async remakeReferrerAccounts(
+    id: string
+  ): Promise<TransactionSignature> {
+    this.delegatedCheck();
+
+    let tx = new Transaction();
+
+    // Firstly, close all referrer accounts
+    if ((await this.hasReferrerAccounts()) == true) {
+      let referrerPubkeyAccountAddress = utils.getReferrerPubkeyAccount(
+        Exchange.programId,
+        this.publicKey
+      )[0];
+      let referrerPubkeyAccount =
+        await Exchange.program.account.referrerPubkeyAccount.fetch(
+          referrerPubkeyAccountAddress
+        );
+      let id = Buffer.from(referrerPubkeyAccount.referrerId).toString();
+      let referrerIdAccountAddress = utils.getReferrerIdAccount(
+        Exchange.programId,
+        id
+      )[0];
+
+      tx.add(
+        instructions.closeReferrerAccountsIx(
+          this.publicKey,
+          referrerIdAccountAddress,
+          referrerPubkeyAccountAddress
+        )
+      );
+    }
+
+    // Secondly, make new ones with the provided ID
+    tx.add(
+      instructions.initializeReferrerAccountsIx(
+        id,
+        this.publicKey,
+        utils.getReferrerIdAccount(Exchange.programId, id)[0],
+        utils.getReferrerPubkeyAccount(Exchange.programId, this.publicKey)[0]
+      )
+    );
+
+    return await utils.processTransaction(
+      this._provider,
+      tx,
+      undefined,
+      undefined,
+      undefined,
+      this._useVersionedTxs ? utils.getZetaLutArr() : undefined
+    );
+  }
+
   public async closeReferrerAccounts(): Promise<TransactionSignature> {
     this.delegatedCheck();
 
diff --git a/src/utils.ts b/src/utils.ts
index bc94c8f8..c0a021e9 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -1964,6 +1964,16 @@ export function median(arr: number[]): number | undefined {
   return s.length % 2 === 0 ? (s[mid - 1] + s[mid]) / 2 : s[mid];
 }
 
+export async function isAffiliateCodeAvailable(code: string): Promise<boolean> {
+  let referrerIdAddress = getReferrerIdAccount(Exchange.programId, code)[0];
+  let referrerIdAccount =
+    await Exchange.program.account.referrerIdAccount.fetchNullable(
+      referrerIdAddress
+    );
+
+  return referrerIdAccount == null;
+}
+
 export const checkLiquidity = (
   size: number,
   asset: Asset,