You can do that with some brokers. e.g Interactive Brokers passes through a slightly adjusted base rate on both credit and debit balances. So you could technica

You can do that with some brokers. e.g Interactive Brokers passes through a slightly adjusted base rate on both credit and debit balances. So you could technically do a carry trade borrowing USD on a 1.5 margin and exchange that for e.g rubles with a 20% interest rate. If you can stomach the market fluctuations and as a consequence the margin requirements. FX markets are often calmly trending for years with some sudden and sensational shocks. Like Deutschmark/Gbp EUR/CHF or recently the Lira or Ruble implosions. Overall very interesting but way over the risk tolerance of people who deposit their money in CDs