Google offers three main types of variable pay: salary, bonus, and equity. Salary is determined by factors like role, location, and performance targets. Employees can receive salary increases for promotions or role changes. Bonus rewards exceptional annual or quarterly performance. Equity comes in the form of restricted stock units (GSUs) that vest over time, with new employees typically receiving their first grant within a month of starting. Top performers are eligible for merit increases, promotions, and annual equity refresher grants.