The glossary

Interest rate

The amount charged by the creditor and paid by the borrower for a loan. It is usually expressed as a percentage of the amount borrowed.

Anecdote

In Switzerland, the Swiss National Bank sets the interest rates that are used as a basis for the entire banking system. Over the past century, official interest rates have fluctuated between -0.75% and 7.0%.

Source: https://www.snb.ch/en/mmr/reference/hist_fest_snb_2007/source/hist_fest_snb_2007.en.pdf