When you buy bitcoin on Coinbase using an ACH transfer, your purchase amount is limited to the current value of your Coinbase holdings.
Because ACH transfers take time to clear, Coinbase places a temporary hold on your assets as collateral and delivers the bitcoin immediately. Once the transfer settles, the hold is released.
Ways to bypass this limit
- Use a different payment method (such as a debit card or wire transfer)
- Buy bitcoin on Coinbase and transfer it to your Bitkey wallet after the funds are available