Joint Cash Reserve accounts are available.
If your client doesn't have an account with Betterment yet, go to your advisor dashboard to sign them up. If they already have a Betterment account, access their page from your dashboards Clients page and click “+ Add Account” to choose the Joint Taxable account type and follow the on-screen prompts to completion. During the process you’ll be able to select “Cash Reserve” from the account purpose options. Find more detailed instructions for joint account opening here. Please note that Cash Analysis and Two-Way Sweep are currently only available on individual Cash Reserve accounts.