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  • pro rata
    pro rata
    adverb
    in proportion; according to a certain rate.
  • pro-rata
    pro-rata
    adjective
    proportionately determined.
Synonyms

pro rata

1 American  
[proh rey-tuh, rah-] / proʊ ˈreɪ tə, ˈrɑ- /

adverb

  1. in proportion; according to a certain rate.


pro-rata 2 American  
[proh-rey-tuh, -rah-] / proʊˈreɪ tə, -ˈrɑ- /

adjective

  1. proportionately determined.

    a pro-rata share of income.


pro rata British  
/ ˈprəʊ ˈrɑːtə /
  1. in proportion

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of pro rata

First recorded in 1565–75, pro rata is from Medieval Latin prō ratā

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

First is avoiding the pro rata rule for Roth conversions.

From MarketWatch Aug. 29, 2026

Burdis says it is possible that redemption requests at some might exceed the threshold of 5% of assets, after which Blue Owl is allowed to only honor them partially, in a pro rata fashion.

From Barron's Dec. 10, 2025

In that case, you’d only owe pro rata rent through the date when you vacate the unit and a landlord couldn’t charge you any fines or fees for terminating the lease.

From Seattle Times Feb. 20, 2024

The fund will be divided among the qualified claimants on a pro rata basis, depending on how much they were overcharged by the DWP.

From Los Angeles Times Aug. 9, 2023

The remaining fifty per cent. is divided among the rest of us, not according to rank but pro rata.

From Fire Mountain A Thrilling Sea Story by Norman Springer

But it would also eliminate my ability to make an age 50 catch-up contribution to that plan, reduce my contribution flexibility and bring the pretax balance into the IRA pro-rata calculation.

From MarketWatch Sep. 2, 2026

Spotify uses a pro-rata model to pay artists from a central pot of income derived from subscriptions and advertising.

From Barron's Nov. 4, 2025

The stock units will vest and the options exercisable on a pro-rata basis following the third, fourth and fifth anniversaries of the grant date.

From The Wall Street Journal Oct. 22, 2025

The capital raise consists of a A$589 million 1 for 1.65 pro-rata accelerated non-renounceable entitlement offer and a A$161 million institutional placement, according to a statement.

From Reuters Sep. 25, 2023

A wage that is amply a "living wage" when used as a pro-rata contribution to an American family income is frequently insufficient for the girl living "independently."

From Modern Economic Problems Economics Volume II by Frank Albert Fetter

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