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

Example Sentences

See Examples For:

year-over-year

And in terms of earnings, financials have seen the largest year-over-year increase in revenue in July, according to John Butters, senior earnings analyst at FactSet.

From MarketWatch ● Aug. 2, 2026

Even with the price hike, “Apple is likely to maintain strong Mac sales, though matching the June quarter’s 29% year-over-year growth will be challenging,” Naranjo said.

From MarketWatch ● Aug. 2, 2026

Rivian debuted its new R2 SUV in June for around $58,000, as overall U.S. sales of all-electric models fell nearly 30% year-over-year that month.

From The Wall Street Journal ● Jul. 30, 2026

Sales of all-electric models were down nearly 30% year-over-year in June, according to data from Motor Intelligence.

From The Wall Street Journal ● Jul. 30, 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