There is a term "Interest Rate Parity", it means that deposits should be equally profitable in any country. And this is regulated by the market, thanks to changes in exchange rates
Let me give you an example right away. You take a loan in dollars at a rate of 5.5%, exchange it for rubles and invest it at 18% in rubles, a year later you exchange it back and get a net 12.5% in $.
So, to prevent such "earnings out of thin air", the ruble must become cheaper at this time to such an extent that the delta between how much you earn and how much you have to pay for the loan is reduced to zero. This is called "Interest Rate Parity"
Now about the rate. At the current rate of 86.52₽, taking into account the difference in rates, exactly in a year, the dollar should be 96.77₽
However, this concept states that it works for a period of 5-10 years, country risk should be excluded, the market should be efficient, and capital should be mobile.
In theory, the concept of "Interest Rate Parity" can work perfectly, but only in ideal conditions. In reality, where there are sanctions, country risks, interventions in the currency market, as in the "textbook" it will definitely not work #BTC
