factor in

British  

verb

1. (tr, adverb) to take account of (something) when making a calculation

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factor in Idioms  

1. Figure in, include as a basic element. For example, In preparing the schedule we factored in vacation and sick days. This term comes from mathematics. [Mid-1900s]

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Example Sentences

The death of Franklin’s young son, Frances, from smallpox was a prime factor in his ardent support of inoculation.

From The Wall Street Journal • Apr. 14, 2026

Rising rent, say the co-executive directors, was a key driving factor in the decision to approach the building’s ownership to purchase the space.

From Los Angeles Times • Apr. 13, 2026

Although, he added, lower housing costs north of the border were a more significant factor in explaining the difference.

From BBC • Apr. 11, 2026

This approach allows you to factor in travel and experiences while still being fiscally responsible.

From MarketWatch • Apr. 11, 2026

But you must, when you are calculating the odds of the mouses success, factor in his love for the princess.

From "The Tale of Despereaux: Being the Story of a Mouse, a Princess, Some Soup and a Spool of Thread" by Kate DiCamillo