CeFi vs DeFi: The Question That Decides Who's Actually Holding Your Crypto
Centralised finance platforms still handle the large majority of crypto activity. Here's what that actually means for custody, and why it matters more than most users realise.
By Firoz Khan|17 August 2026|Updated 11 October 2026|3 min read
CeFi, centralised finance, describes crypto platforms, exchanges, lending services, custodial wallets, run by a single company that controls the infrastructure and, critically, usually holds the actual private keys to user funds. It's the direct counterpart to DeFi, decentralised finance, where code and smart contracts perform those same functions without a company sitting in the middle.
What you're actually trusting when you use CeFi
A CeFi platform's solvency, its security practices, and its willingness to actually honour withdrawals when you request them. This isn't a hypothetical concern, several high-profile CeFi platform collapses have frozen or permanently lost customer funds, a risk category that simply doesn't exist in the same form with genuine self-custody.
A real case: what the terms said
When the lender Celsius went bankrupt in 2022, a US bankruptcy judge ruled on 4 January 2023 that its terms of use had transferred ownership of assets deposited in its interest-bearing Earn accounts to the company. Account holders were therefore unsecured creditors, queuing alongside everyone else the company owed, and were likely to recover less than 100%. The case was decided under US law and UK insolvency law could differ, but the lesson travels: what the terms say about who owns your deposit matters as much as the platform's reputation.
Why most people still use CeFi anyway
It's dramatically more convenient: familiar account-based login, customer support that exists at all, fiat on- and off-ramps to move between pounds and crypto, and none of the responsibility of managing your own private keys, where a mistake can mean permanent, unrecoverable loss with nobody to appeal to.
The genuine DeFi trade-off
DeFi removes the counterparty risk of trusting a company with your funds, replacing it with smart contract risk, exploits and bugs in the code itself, and the very real responsibility of managing your own keys correctly, with no password reset and no customer support line if something goes wrong.
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A sensible way to split exposure
Many experienced users deliberately run both: CeFi for convenience, fiat conversion and active trading, self-custody for anything they intend to hold for the longer term. Understanding which one you're actually using for any given balance, and what that specifically means for who controls it, is the more useful question than which model is objectively 'better'.
Say you hold £10,000 in crypto. You might keep £2,000 on a UK exchange for trading and convenience, and £8,000 in your own wallet. If the exchange failed, £2,000 is exposed rather than £10,000. The split is an example of the idea, not a recommendation.
What the UK rules do and don't cover
Any firm running a crypto exchange business in the UK must be registered with the FCA, for anti-money-laundering purposes. Registration is not protection for your deposits. The FCA says crypto is largely unregulated in the UK and that it is highly unlikely you would be covered by the Financial Services Compensation Scheme, which protects savings in a bank up to £120,000. The FCA says the new UK regime, covering custody, trading platforms, lending, borrowing and staking, starts on 25 October 2027. Until then, treat a CeFi platform's promises as the company's own, not the state's.
What the new UK regime means in practice
The FCA's gateway page sets out the timetable: firms could apply for authorisation from 30 September 2026, an application period runs to 28 February 2027, and the regime is expected to come into force on 25 October 2027. The FCA published its final rules and guidance on 30 June 2026. Until it starts, a firm's registration under the money laundering rules is about preventing financial crime, not about safeguarding your deposit.
Questions to ask a platform
Read the terms for four things. Whether your assets are held separately from the company's own money. Whether the platform lends or reuses your assets, and on what terms. What it says happens to your holdings if it becomes insolvent. And how withdrawals work, including limits and any conditions on pausing them.
Where to read more
- Digital assets explained: the categories and legal status of what you hold
- Stablecoins explained: what a platform that holds stablecoins is promising
- FCA crypto guidance explained: the regulator's warnings
- Crypto taxes in the UK: records for exchange activity
A reminder
The FCA risk warning still applies to higher-risk crypto content. Always assess how much risk you are willing to take before buying.
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