Factor in

Factor in: incluir determinado item quando estiver calculando ou planejando algo  (considerar, incluir)

“Don't forget to factor in transport costs when you make the quotation.”

“You need to factor the political situation in when deciding on a country to invest in.”

(www.englishclub.com)

Factor in

Factor in: levar algo em consideração no planejamento ou cálculo de alguma coisa

“ Don't forget to factor in transport costs when you make the quotation.”

“ You need to factor the political situation in when deciding on a country to invest in.”