Custody · 7 min read
Hardware wallet vs exchange: where should your crypto actually live?
It is not a religion and it is not all-or-nothing. Custody is a trade between convenience, control and risk — and the right answer is usually a deliberate split rather than a slogan.
01
The real question is who holds the keys
Everything else — apps, fees, user experience — is secondary.
When your crypto sits on an exchange, the exchange controls the keys and you have a claim on them. That claim is usually honoured, and it is enormously convenient. But it is a promise, not a fact you can verify, and history has plenty of examples of exchanges freezing withdrawals, failing, or being hacked. When you hold the keys yourself, the coins are yours without anyone's permission — and you are the one who has to keep the secret safe.
A hardware wallet is the practical way to hold keys yourself without leaving them on a computer. The companion app — for example Trezor Suite — is how you actually use them.
02
What an exchange actually offers
Real benefits, and one structural risk you cannot diversify away.
- Speed: buying, selling and swapping in seconds, with instant settlement.
- Liquidity and price: deep order books and tight spreads on major assets.
- Recovery: forget your password and you can usually reset it through an email or an identity check.
- Convenience in tax season: a transaction history you can export, rather than reconstructing it yourself.
- The structural risk: as long as they hold the keys, they can freeze, lose or lend out those assets. Your claim ranks behind a lot of other claims if they fail.
03
What self-custody actually gives you
Unconditional ownership, in exchange for an unconditional responsibility.
- Nobody can freeze or seize your assets through a company action; there is no company in the loop.
- No counterparty risk: you are not a creditor of anybody.
- Real privacy options: with your own node and Tor, fewer parties see what you hold.
- Direct participation in networks, including staking where the asset supports it.
- The responsibility: the recovery seed is the only key, and losing it is permanent. Nobody can reset it for you.
Self-custody moves risk, it does not delete it
Exchanges get hacked and go bust. Individuals get phished, lose backups and die without leaving instructions. Whichever route you take, the risks are specific and worth naming out loud.
04
A split that works for most people
Not a rule, but a starting point that survives contact with real life.
| Money | Sensible home | Why |
|---|---|---|
| Day-to-day trading balance | Exchange | You want speed, liquidity and instant settlement; the amount at risk is small by design |
| Savings and long-term holdings | Hardware wallet | The whole point is that no company action or hack can reach it |
| Yield and staking positions | Either, depending on the terms | Understand who holds the keys during the lock-up, and what happens if the provider fails |
| Anything you would hate to lose | Hardware wallet | With a tested backup, stored offline, in more than one place |
The common mistake in the other direction is treating self-custody as a switch to flip once. Keep only what you are prepared to protect properly: a hardware wallet with an untested backup is not necessarily safer than a reputable exchange for someone who has not yet done the homework.
05
The costs, side by side
Including the ones nobody puts on the pricing page.
On an exchange
- Trading and withdrawal fees.
- Identity verification, which links your holdings to you.
- Counterparty and platform risk.
- Recoverable account access.
In a hardware wallet
- One-off device cost, plus network fees when you move funds.
- Your time: setup, backups, updates.
- No recourse if you lose the seed or approve a bad transaction.
- No account to recover — which is also the point.
06
How to decide this week
A short, practical sequence.
- Write down the total value you hold and how much of it you would genuinely be upset to lose. That number is what deserves self-custody.
- Buy a hardware wallet from the manufacturer or an authorised reseller, and follow the setup guide properly.
- Test the pipeline with a small amount: receive, then send back out. Practise reading the device screen.
- Write and store the recovery seed as described in the backup guide, and check it with the device's own verification.
- Move your long-term holdings across in one or two transactions, then leave the trading float on the exchange.
Ready to get the real app?
Trezor Suite is free to use and is published by the hardware wallet's manufacturer. Download it from the official site — never from an ad, a search result lookalike or a file someone sent you.