Definition
To tip the balance or scales means to be the deciding factor that changes a situation or determines an outcome when other possibilities exist.
A crucial penalty in the final minutes tipped the balance, securing their team's victory.
Despite many factors being considered, this new piece of evidence ultimately tipped the balance, leading them to their decision.
She was hesitant between the two jobs, but in the end, the higher salary tipped the balance, leading her to choose this one.