Position in Range

Compa-Ratio and Range Penetration

Both measures describe base-pay position, but they use different reference points. Compa-ratio compares pay with the midpoint; range penetration measures progress from minimum to maximum.

Reviewed August 4, 2026 · Source-led practitioner reference

The formulas

Compa-ratio = employee base pay ÷ range midpoint

Range penetration = (employee pay − range minimum) ÷ (range maximum − range minimum)

Worked example

Assume a salary range of $60,000 minimum, $75,000 midpoint, and $90,000 maximum. An employee earns $72,000.

Measure	Calculation	Result
Compa-ratio	$72,000 ÷ $75,000	0.96, or 96%
Range penetration	($72,000 − $60,000) ÷ ($90,000 − $60,000)	0.40, or 40%

The employee is paid at 96% of the midpoint and has moved through 40% of the full range. These statements are both correct because the measures answer different questions.

Use each measure deliberately

Compa-ratio is useful for comparing pay with a market or policy reference point and for summarizing groups.
Range penetration is useful for describing location across the available range, especially when range spreads differ.

What the numbers do not prove

A low compa-ratio does not automatically mean underpayment. A high ratio does not automatically mean overpayment. Neither measure alone establishes performance, experience, scarcity, pay equity, or legal compliance. Interpretation requires job match, time in role, skills, location, performance, hiring conditions, pay history controls, and consistent comparison groups.

Analysis control: Validate the employee’s grade, range, currency, work location, base-pay basis, and effective date before calculating. Then investigate patterns by legitimate business factors rather than using a single cutoff as a verdict.

Put this concept into practice

Compa-ratio and range penetration describe position in a structure; neither proves fairness, performance, market alignment, or an appropriate pay action by itself.

Decision questions

Is the range current and appropriate for the job and location?
What explains the employee’s position in range?
Are experience, performance, skills, tenure, and equity being evaluated consistently?
Would a proposed action create compression or inversion?

Build an auditable record

Keep the effective range, employee pay, calculation, relevant factors, peer context, decision rationale, approval, and resulting position.

Practical test: Review two employees with similar ratios but different histories and confirm the decision process recognizes context rather than treating the ratio as a verdict.

Primary sources

Educational reference only. Apply the employer’s compensation philosophy, approved governance, applicable law, and qualified professional advice to specific decisions.

Website and app serve different jobs. Use this public guide for quick orientation and source review. Structured CCP lessons, practice questions, flashcards, progress tracking, and AI-supported study remain inside PrepToPay Compensation.

Keep building your compensation reference system.

Return to the library and use the full sequence: pay mix, job value, market value, range design, and position in range.

Continue in Compensation Concepts →