The GS is separated into 15 grades (GS-1, GS-2, etc. up to GS-15); each grade is separated into 10 steps. At one time, there were also three GS "supergrades" (GS-16, GS-17 and GS-18); these were eliminated under the provisions of the
Civil Service Reform Act of 1978 and replaced by the
Senior Executive Service and the more recent Senior Level (non-supervisory) pay scale. Most positions in the
competitive service are paid according to the GS. In addition, many positions in the
excepted service use the GS as a basis for setting pay rates. Some positions in the excepted service use the grade designator "GG"—for example, "GG-12" or "GG-13". The GG pay rates are generally identical to published GS pay rates. The GS-1 through GS-7 range generally marks entry-level positions, while mid-level positions are in the GS-8 to GS-12 range and top-level positions (senior managers, high-level technical specialists, or physicians) are in the GS-13 to GS-15 range. A new GS employee is normally employed in the first step of their assigned GS grade, although the employer has discretion to, as a recruiting incentive, authorize initial appointment at a higher step (other agencies may place the employee at a higher grade). In most professional occupations, entry to mid-level positions are classified at two-grade intervals—that is, an employee would advance from GS-5 to GS-7, then to GS-9 and finally to GS-11, skipping grades 6, 8 and 10.
Advancement between steps within the same grade Permanent employees below step 10 in their grade normally earn step increases after serving a prescribed period of service in at least a satisfactory manner. The normal progression is 52 weeks (one year) between steps 1–2, 2–3, and 3–4, then 104 weeks (two years) between steps 4–5, 5–6, and 6–7, and finally 156 weeks (three years) between steps 7–8, 8–9, and 9–10. However, an employee can be rewarded for outstanding work performance via a "quality step increase" ("QSI"), which advances the employee one step within grade regardless of time at the previous step. (A QSI does not affect the timing of an employee’s next regular within-grade increase, unless the QSI places the employee in step 4 or step 7 of his or her grade. In these cases, the employee must complete the full waiting period for the new step, 104 weeks for steps 4-6 or 156 weeks for steps 7-9. However, the time an employee has already waited is not lost; it continues to count towards the waiting period for the next step increase. The QSI provides the employee the benefit of receiving an additional step increase at an earlier date than he or she originally would have without losing any time creditable towards his or her next WGI.)
Advancement between grades Depending on the agency and the work description, a GS position may provide for advancement within a "career ladder," meaning that an employee performing satisfactorily will advance between GS grades, normally on an annual basis, until s/he has reached the top GS grade for that job (which represents full performance). Advancement beyond the top grade (to either a managerial or technical specialty position) would be subject to competitive selection. Not all positions, however, provide for such a "career ladder," thus requiring employees who seek advancement to consider other career paths, either within their agency or outside it. An example is the "career ladder" for auditors within the
Defense Contract Audit Agency (DCAA). The traditional "entry level" grade within DCAA is the GS-7 level (some employees come in either at the lower GS-5 level or higher GS-9 or GS-11 levels) and the "career ladder" is GS-7 to GS-9 to GS-11 and finally to GS-12, with the employee expected to advance between grades after one year and if hired as a GS-7, to reach the GS-12 level after three years). Beyond the GS-12 level, advancement to the next level (GS-13, which is in most cases either a supervisory auditor or a technical specialist) are based on competitive selections. Furthermore, if an employee is promoted to a grade which is not part of the career ladder (such as a promotion to a managerial or technical specialty position), the employee's salary is set at the step within the higher grade nearest the employee's current salary (but never below the current salary), plus additional steps to reward the employee for the promotion and to account for the increased responsibilities that go along with the new position. As an example (and not including locality adjustments), an employee at GS-12 Step 10 (base salary $) being promoted to a GS-13 position would initially have his/her salary set at GS-13 Step 4 (base salary $, as it is the nearest salary to GS-12 Step 10 but not lower than it), and then have his/her salary adjusted to a higher step (such as GS-13 Step 6, having a base salary of $). ==Salary calculation==