You can deposit funds into your crypto account via your Funding account or by initiating a wire transfer. We currently do not support crypto transfers from third-party wallets.
Betterment will use the cash from your deposits to purchase coins in your crypto portfolio at the next available trade window. All crypto portfolios contain a cash allocation and the number of coins in your portfolio is reduced at a low account balance.
Please see our FAQs on Transaction limits and Transaction timelines for more information.