Binance vs Kraken.

Which is safer? — the sourced record

On proof of reserves, Kraken runs a quarterly auditor-assisted Merkle-tree program with per-client self-verification covering spot, margin, futures and staked assets (~$21.5B of client assets verified in the March 2025 release). Binance self-publishes a regular Merkle-tree proof with zk-SNARKs and on-chain wallet disclosure (January 2026 snapshot: BTC ratio 100.06%) but without an independent auditor’s sign-off — a real difference in attestation depth.

On regulation: Kraken holds a MiCAR CASP licence (Central Bank of Ireland, announced 2025-06-25) plus MiFID and e-money licences; its SEC suit was dismissed with prejudice in March 2025 with no penalty, after a $30M SEC staking settlement in 2023, and an Australian court ordered AUD 8M over a margin product in December 2024. Binance had no MiCAR licence verified as of the 2026-06-10 research pass (Greek application pending) and resolved the largest enforcement action on record — a guilty plea with a $4.3B US resolution in November 2023; its SEC civil suit was dismissed with prejudice in May 2025.

The incident records are both comparatively contained. Kraken, founded 2011 and the oldest venue in our comparison, has no platform-wide withdrawal halt documented in 36 months of public status history (asset-level pauses only, plus a ~3-hour front-end outage during the November 2025 Cloudflare incident); a zero-day balance-inflation bug exploited by security researchers in June 2024 (~$3M withdrawn) was patched in 47 minutes and the funds returned. Binance paused withdrawals for ~23 minutes during the 2025-04-15 AWS outage, and compensated users with $283M within days after brief depegs during the 2025-10-10 liquidation cascade. The live scores above weigh all of it, with 24-month decay — the full sourced basis sits on each venue page.

Which is cheaper? — what stays true between snapshots

Published base-tier fees and the measured all-in cost of the same $1,000 BTC buy are in the live cards above; the spread component moves with the orderbook, so the ranking can flip between measurements. Structurally, both venues publish a fixed BTC withdrawal fee (shown live above from their published schedules), so the withdrawal leg is comparable on this page.

One stable caveat on Kraken: its Instant Buy flow carries a curated typical markup of roughly 1.5% spread plus 0.9% processing (150–240 bps, verified 2026-06-10) that the spot orderbook does not. Our table prices spot on both venues — the convenient button is where the extra cost hides.