From January 2026, crypto exchanges, custodians, and firms serving individual crypto holders in the UK are required to report user transaction data to HMRC, the UK's tax authority. First submissions are due May 2027. One year out, tax and audit teams are not waiting. From firms handling institutional clients to accountants serving individual crypto holders, they're building the data infrastructure now: reconstructing cost-basis, tracking lot disposals, producing auditable onchain records across every chain their clients operate on. Dune's Audit & Tax collection is the production-ready foundation for exactly this. Normalized onchain records across 61 chains, source-traceable to every transfer and event. No per-chain rebuilds. Every figure provable back to the source transaction. Explore Dune's Audit & Tax collection → https://eu1.hubs.ly/H0wmTy70(Dune)