Yeh tab dekha jiey ga jab pakistan mein crypto legal hogi tu kitna tax lagay ga, 10% ya 30% ya kuch aur. But abi ramazan aa raaha hay aur hum sab logon ki yeh responsibility hay k humaray pass jitni bhi crypto hay ( Exchanges p, decentralized wallets p, staking p, hardware wallets p) aun sab ko calculate kerain aur ais p 2.5% zakat ada kereian. Aur han there are may zakat calclaulars available online and you can use any of them for your help. Aik example of calculator  is https://www.tcf.org.pk/zakat/zakat-calculator/.