“Not your keys, not your coins” is good advice, but I think beginners are sometimes pushed into self-custody before they understand the responsibility that comes with it.
Keeping crypto on an exchange creates counterparty risk.
Using self-custody creates operational risk.
With an exchange, you depend on the company to:
- secure the assets;
- process withdrawals;
- remain solvent;
- protect your account.
With self-custody, you are responsible for:
- private keys;
- seed phrase backups;
- transaction accuracy;
- wallet security;
- avoiding malicious contracts;
- recovering access if a device fails.
Neither option is completely risk-free.
For small amounts, a good exchange with strong 2FA can sometimes be safer than a beginner incorrectly managing a seed phrase.
As holdings grow, the balance usually shifts toward self-custody.
I would personally avoid thinking in terms of a fixed dollar threshold. The better question is whether the user understands how recovery works and can securely store the backup.
When do you think a beginner should move from an exchange to self-custody?
Immediately, after reaching a certain portfolio size, or only after they fully understand wallet recovery?
I think beginners should move to self-custody once the amount becomes meaningful and they fully understand seed phrase security. It is better to learn the process with a small test amount first.