+An [Interest Rate](/wiki/interest_rate) is the cost of borrowing [Money](/wiki/money) or the return earned on invested capital, typically expressed as a percentage of the principal. It influences economic decisions, reflecting the supply and demand for funds within a market.
+## See also
+- [Loan](/wiki/loan)
+- [Central Bank](/wiki/central_bank)
+- [Inflation](/wiki/inflation)
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