year-over-year

American  

[yeer-oh-ver-yeer] / ˈjɪərˈoʊ vərˈjɪər /

Or year over year

adverb

Accounting, Finance.

1. as compared with the corresponding figure 12 months earlier; involving or reckoned by such a comparison: YoY

   Exports fell 2 percent year over year in May.

   February rents for one-bedroom apartments saw a year-over-year increase of 6 percent.

2. in each year that passes after an initial investment, the start of an observed trend, etc.; annual or annually.

   The gain from this software purchase has been our best ROI year over year.

   Over the last decade, the year-over-year trend in inflation has strongly correlated with the year-over-year trend in GDP.

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Etymology

Origin of year-over-year

First recorded in 1790–1800, for an earlier sense

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Example Sentences

See Examples For:

year-over-year

In its first year post-expansion, the credit generated more than $8 billion in direct production spending, over 43,000 jobs were created and film shoot days rose 52% year-over-year, according to the governor’s office.

From Los Angeles Times ● Nov. 2, 2026

Even after Gilead reported its “strongest year-over-year base business growth in more than a decade,” analysts questioned how long it would take until the growth in its HIV franchise plateaus due to competition.

From MarketWatch ● Oct. 30, 2026

But search revenue growth slowed to 12% year-over-year, down from 17% growth in the second quarter, helping sen shares down about 10% in after-hours trading.

From The Wall Street Journal ● Oct. 29, 2026

Gross merchandise volume was $23.17 billion, up 15% year-over-year.

From The Wall Street Journal ● Oct. 28, 2026

In December 2007 inflation reached 4.1% on a year-over-year basis, or higher than the upper limit of the National Bank of Poland's target range.

From The 2008 CIA World Factbook by United States. Central Intelligence Agency

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