have an impact on (someone or something)(redirected from have an impact on something)
have an impact on (someone or something)
To affect or influence someone or something. Of course your decision has an impact on me—I'm your wife! Don't worry, your grade on that assignment has very little impact upon your overall grade for the semester.
have an impact on someone or something
to leave an impression on someone or something. The sharp change in interest rates had an impact on the housing market. Your story really had an impact on me.