Is It Possible to Merge Two Costco Accounts?

First, sign in to your Costco account. Click Manage My Households to merge your Costco membership. You'll see a drop-down menu with your current household members. Verify the new member's ID. Select Merge Two Memberships from the menu. A pop-up window will appear with an option to merge an existing account. Select Merge Account to complete the process.

It's possible to merge two Costco accounts into one, even though the Costco website and membership agreement are pretty clear that only one person can have one membership. One of the challenges that Costco shoppers face is managing multiple membership accounts. Unintentionally purchasing with the wrong account can happen if you manage multiple household accounts. Here are the steps to merge two Costco accounts.

1. Log In to Your Costco Account

Go to the Costco website and log in to your account. Click My Account and select Change My Membership in the pop-up box. Select Add Membership on the next page. Click Continue.

2. Click Manage My Households

If you'd like to keep your existing Costco membership instead of transferring the card over to a different account, there is a way for both of you to have one membership — you can add them as a household manager on your plan.

First, go online to the Costco website and log into your current account. Click Manage My Households and select Add Household Manager. Enter the information for the member you want to add and click submit. The member will receive an email with instructions on ID verification.

3. Verify the Identity of the New Household Member

Follow the instructions on each page of the form, including entering the new household's address and phone number to verify your identity and choosing a new password if you didn't have one before. On the Select Households screen, check all accounts that you want to merge and click Next Step.

Go through a series of questions about your membership history and click Next Step when you complete each one. Read over the final agreement on this page and select Agree and Continue.

4. Select Merge Two Memberships

When you choose to merge two Costco accounts, you'll need to enter the first person's membership number and last name on the screen. Once you do that, enter the second person's membership number, last name and new password. Next, it will ask you to input the second person's address. You can then change the address for both members if needed.

5. Receive Confirmation Email

Wait for a confirmation email before proceeding. Check your inbox and confirm your address by clicking the link in the message or calling Customer Service. Log in to your new account using your login information.

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