How do I transfer Apple Cash to Apple Savings?

Have you verified your Apple Cash account with Goldman Sachs Bank?

>>Deposit money into Savings

When you open Savings, you agree to automatically deposit Daily Cash that you earn into your Savings account.3 You can also add money to Savings from a linked external bank account or Apple Cash.

1. On your iPhone, open the Wallet app and tap Apple Card.
2. Tap Savings account, then tap Add Money.
3. Enter the amount that you want to add, then tap Add.
4. Choose the pre-selected external account, change it, or add a new one. If you still need to add a bank account, follow the steps in View and update your Savings account information in Apple Wallet. 
5. Double-click the side button to confirm with Face ID, Touch ID, or your passcode.

Money you deposit into Savings starts earning interest on the day the transfer is initiated from the Wallet app.

If you transfer money from Apple Cash, the funds are typically available instantly. If you transfer money from a linked external bank account, it will generally take a few days for funds to be available for withdrawal.<<

Set up and use Savings in Apple Wallet - Apple Support

Identity verification for Apple Card or Apple Cash - Apple Support