Is Kraken safe? The evidence, and what it lacks

Kraken leads our exchange rating on custody evidence, and the reason is specific rather than reputational: it publishes the only proof of reserves in this market that does everything a proof of reserves is supposed to do.

What its proof of reserves actually contains

Four properties, and almost nobody else has all four.

• It includes total client liabilities. Kraken's own position is that anything less is not a full proof of reserves — a standard most competitors do not meet, because publishing assets alone proves nothing about what is owed.
• It is attested by a named accounting firm, so the numbers have somebody's professional reputation attached rather than being self-declared.
• It runs quarterly, on a stated cadence. The most recent snapshot at the time of writing was 31 March 2026.
• Every client gets a personal Merkle proof and can verify that their own balance is inside the total. That is the part that turns a corporate publication into something you can check yourself.

Set that against the alternatives. Several venues publish assets without liabilities. One large exchange's live page still names an attestor who publicly quit all crypto proof-of-reserves work in December 2022 and still cites that month's date. Others publish nothing at all. Our guide to spotting a fake proof of reserves works through the patterns.

What it lacks, in its own words

Kraken states plainly that crypto exchanges do not qualify for deposit insurance and that it publishes no user-protection fund. There is no SAFU-style reserve, no insurance policy standing behind a balance.

We rate that disclosure above the alternative — a fund that exists mainly in marketing copy, with no verification that the money is there — but an absence is still an absence. If Kraken failed tomorrow, there is no pool earmarked to make customers whole, and the recovery would run through insolvency law like any other.

The mitigating fact is the record: no hack of client crypto has ever been documented in Kraken's history, which is more than a decade of operation.

Where you can use it

Kraken serves the US nationally with the exception of Maine and New York, with product-level restrictions in several other states, and it does so on the same platform the rest of the world trades on. That matters more than it sounds: Binance and OKX route Americans to separate US entities with their own, thinner order books, so a global fee comparison describes a venue Americans cannot actually reach.

What it costs

Kraken sits in the middle of the market on price — materially cheaper than Coinbase, which we measured at roughly 0.60% effective cost on a $10,000 buy, and more expensive than the cheapest offshore venues at around 0.10%. For a US buyer the practical comparison is against Coinbase, and Kraken wins it on both cost and custody evidence.

Kraken tells you what it can prove and tells you what it cannot. Very few venues do the second half.

The short version

Kraken is the strongest evidence-backed custodian in our rating: a liability-inclusive, third-party-attested, quarterly proof of reserves you can personally verify, no documented loss of client crypto, and broad US availability outside Maine and New York. There is no insurance and no protection fund, and it says so. Treat it as the best place to keep a working balance, not as a substitute for holding long-term positions yourself.