Indexing

Interest rate used as a reference for variable rate loans and deposits. The applicable interest is calculated using the nominal interest rate, which in the case of a variable rate corresponds to the sum of the index value plus a spread. Euribor is the commonly used index. In credit contracts, the value of the index is revised with a frequency equal to the period to which it refers (for example, Euribor at 3 months, Euribor at 6 months, etc.).

Source: Glossary of Banco de Portugal, letter I (consulted on 2022-06-28)