base year

Starting point year

A base year is a reference point for comparison in economics, statistics, and finance.

Index numbers, inflation rates, and growth calculations typically measure change relative to a base year set at 100 or some standard value: Using 2020 as the base year, prices have risen 15 percent.

The choice of base year can significantly affect how data appears.

Related

purchasing power · cost of living · benchmark · reference point · rebasing · price index · real income · constant · CPI · consumer prices · time series · economic indicator · number · basket · yardstick · economic · nominal · percentage

Opposites
temporal reference point

base yearcurrent year

Ongoing calendar year

data adjustment status

base yearreal terms

Inflation-accounted economic measurement

Family

base, year, years, yearly, yearbook, baseline, database, baseman, yearlong

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Top 500,000
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Used worldwide · Timeless · Abstract · Rated G