Which one is correct?
"on a monthly bases" or "in a monthly bases"?

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on a monthly bases

'On a monthly basis' is the correct phrase to use when referring to something that occurs monthly.

You should use 'on a monthly basis' to describe events or actions that happen monthly.

in a monthly bases

'In a monthly bases' is not a standard English phrase.

The correct preposition to use with 'monthly basis' is 'on,' so the correct phrase is 'on a monthly basis.'
The correct phrase is 'on a monthly basis.' 'On a monthly basis' is a common and correct way to express the frequency of an event or action. 'In a monthly basis' is not a standard English phrase.

Last Updated: March 26, 2024

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