The fastest deposit methods are e-wallets, cryptocurrencies, and electronic credit/debit cards. E-wallet transactions are processed instantly; depositing with crypto takes no more than 15 minutes for BTC and faster for ETH, LTC, XRP, and BCH; the speed of electronic credit/debit card transfers depend on the bank (sometimes payment providers delay or freeze transactions, for example, if the money transfer falls under the category of potentially fraudulent or violate the rules of the payment provider). The slowest depositing method is bank wire transfers, up to several business days.