impact (up)on (someone or something)
To affect or influence someone or something. Of course your decision impacts on me—I'm your wife! Don't worry, your grade on that assignment won't impact upon your overall grade for the semester.
See also: impact
impact (up)on someone or something
[for something] to have an effect on someone or something. (Upon is formal and less commonly used than on.) This plant closing will impact upon the local economy for years to come. The day's troubles impacted on Rachel quite seriously.
To have an effect on someone or something: The results of the election will impact on upcoming legislation.