Custodial wallet
A wallet where a third party, such as an exchange, holds the keys and the crypto on your behalf.
A custodial wallet is one where a third party, usually an exchange, holds the keys and the crypto for you. You log in with an email and password, see a balance, and click buy or sell. Behind that screen, the platform controls the actual coins. Your balance is a record in their database, not keys in your hands.
This is how most people first touch crypto, and the appeal is obvious. There is a password reset if you forget your login. There is a support team if something goes wrong. You do not have to write down and guard a seed phrase, back it up in two places, or lie awake worrying about losing a private key, because the provider quietly handles every part of that for you. For a beginner, that lower mental load matters.
The cost is control. You are trusting the provider to stay solvent, honest, and secure. If they freeze withdrawals, you wait. If they get hacked, your coins can vanish. If they go bankrupt, you join a queue of creditors. Mt. Gox failed in 2014 with around 850,000 BTC gone. FTX collapsed in 2022 with billions in customer funds missing. In both cases, users held IOUs, not coins. The phrase "not your keys, not your coins" comes straight from episodes like these.
A custodial wallet sits at the opposite end from a non-custodial wallet, where you alone hold the keys. Neither is correct for everyone. Custody is convenient and forgiving of mistakes. Self-held keys give you full control and full responsibility. Plenty of people use both: a platform account for buying and active trading, a personal wallet for longer-term holdings.
If you do keep funds on a custodial platform, a few habits help. Use a strong, unique password. Turn on two-factor authentication. Pick a regulated provider with a real track record rather than the newest name promising big returns. And remember the balance is only as sound as the company behind it.
Banxa is an on-ramp, not a custodial wallet. Since 2014 it has let people in 100+ countries buy crypto through 100+ payment methods and receive those coins straight to an address they control, which means you, rather than Banxa, decide where the funds live the instant the purchase settles.