All federal employees in the GS system receive a base pay that is adjusted for locality. Locality pay varies, but is at least 15.95%% of base salary in all parts of the United States. The following salary ranges represent the lowest and highest possible amounts a person can earn in base salary, without earning over-time pay or receiving a merit-based bonus. Actual salary ranges differ adjusted for increased locality pay, but all base salaries lie within the parameters of the following ranges :