I have never heard about companies charging both sides of payroll tax on bonuses - is it even legal? Anyway, Google does not do it and California does not have

I have never heard about companies charging both sides of payroll tax on bonuses - is it even legal? Anyway, Google does not do it and California does not have any extra tax for bonuses so it does not matter in this case. With that, I agree that having higher guaranteed salary is better than having the same expected variable comp but the comment was about taxes.