You can easily link your existing bank account with your Finch account:
- Tap Deposit in the top right corner of your home screen
- Tap Make a one-time deposit or Set up a recurring deposit
- Tap Link a new bank account, then tap Next
- Review the popup and tap Continue
- Select your bank, enter your login information, then tap Submit
- Choose your primary account, then tap Continue
Heads up, there may be additional steps, like verifying a code, depending on the financial institution you select.