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"once a year" vs "once per year"

Both 'once a year' and 'once per year' are correct and commonly used phrases in English. They are interchangeable and convey the same meaning.

Last Updated: March 26, 2024

once a year

This phrase is correct and commonly used in English.

This phrase means something that happens one time in a year. It is a common expression to indicate the frequency of an event happening annually.

Examples:

  • I go on vacation once a year.
  • The festival is held once a year.
  • We have a family reunion once a year.
  • The company conducts performance reviews once a year.
  • The flowers bloom once a year.

Alternatives:

  • annually
  • every year
  • yearly
  • once annually
  • once every year

once per year

This phrase is correct and commonly used in English.

This phrase also means something that happens one time in a year. It is a formal way to express the frequency of an event occurring annually.

Examples:

  • The report is submitted once per year.
  • The subscription fee is paid once per year.
  • The medical check-up is done once per year.
  • The event is organized once per year.
  • The maintenance is scheduled once per year.

Alternatives:

  • annually
  • every year
  • yearly
  • once annually
  • once every year

Related Comparisons

a year vs An year after a year vs after an year once a year vs once every year Twice a year vs Twice an year an year vs a year it's hold once a year vs it's held once a year

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