[kartickv]

Moving money to a low inflation currency sounds good in theory, but is not an accessible solution to the average Indian, and is fraught with bureaucracy and fees even for those it is accessible to. I put my money in a liquid fund (debt mutual fund) to earn 8% nominal interest rate. That's a much more practical solution than moving it to dollars, say.

Airtel's offer may be temporary, and interest rates rarely go to 7%, but the point is that there's always a competition on interest rates.

India's inflation and nominal interest rates are both higher, which means you lose more if you forgo interest. In a hypothetical country with 5% inflation and a 5% interest rate, if you forgo interest, you lose 5% every year. In a country with 2% inflation and 2% interest rate, you lose only 2%.