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

Their rivalry has been a big factor in the heavyweight landscape for years without ever delivering the fight that British boxing craves.

From BBC • Apr. 12, 2026

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

From MarketWatch • Apr. 11, 2026

Each of these was a real and important factor in the way the fire was able to race through the city unchecked, yet none was singled out as the cause.

From "The Great Fire" by Jim Murphy