We are pleased to invite experts in taxation and tax administration to submit papers to a special issue of JOTA on cryptoassets. We are interested in papers that offer insights into the challenges facing tax authorities and practitioners in the fast-changing landscape of cryptoassets and related transactions. We are also interested in papers that explore the emerging patterns or guidelines for their tax treatment and associated issues in tax compliance. Papers and commentaries describing and analysing the experiences of tax administrations in particular jurisdictions or across jurisdictions will be also considered.