Consider 'factor in' as influencing your final decision after considering all aspects. I factored in her long-term commitment when deciding on the promotion.
Pro Tip 2/3
Implicit Impact
It suggests the included element could indirectly affect the outcome. We must factor in public opinion when launching the campaign.
Pro Tip 3/3
Contextual Clues
Look out for context that indicates what specifically needs to be 'factored in'. Consider factoring in cultural differences during the negotiation.