Pay Gap Analyzer

A single 10% difference in starting salary — one worker at $85,000, another at $93,500 — compounds dramatically over 30 years. Assuming both workers get the same 3% annual raises, the higher-starting worker will out-earn the lower one by approximately $520,000 over a 35-year career. Plus investment growth on saved earnings, the real gap is closer to $750k-1M.

The math: at year 10, the $93,500 worker is at $125,400 and the $85,000 worker is at $114,000 — an $11,400/yr gap. At year 20, the gap is $15,400/yr. At year 30, the gap is $20,700/yr. Every gap gets amplified by the next raise, and the difference compounds.

This is why a 10% negotiation "win" at age 28 is worth more than any single raise later. The starting salary sets the multiplier for every subsequent raise.

Pay gaps correlate with several factors, often in combination:

• Gender gap: Women earn $0.83 for every $1.00 men earn in aggregate (BLS 2024, unadjusted). Adjusted for role, industry, and experience, the gap narrows to $0.93-0.95 but persists.
• Race gap: Black workers earn $0.78, Hispanic workers $0.74, for every $1.00 white workers earn (BLS 2024). Adjusted for role, gaps are smaller but persistent.
• Education premium: Bachelor's degree holders earn ~65% more than high school graduates over a career (Census Bureau). Graduate degrees add another 20-30%.
• Industry premium: Same role pays 30-50% more in tech or finance than in retail or education for equivalent skills.
• Location premium: Metro wage differences can be 30%+ for the same role (before cost-of-living adjustment).

These are averages — your personal experience may vary significantly based on industry, company, and individual negotiation.

The most common use cases are: (1) comparing your current salary to a role you didn't take or are considering taking, (2) comparing your salary to what peers earn (per Levels.fyi, Glassdoor, or other benchmarks), (3) modeling the lifetime impact of a raise or a new offer, (4) analyzing a gender or race-adjusted gap in your own team or industry.

The tool shows the annual delta and projects it over a chosen horizon assuming a steady raise rate. For most decisions, a 30-year horizon with 3% annual raises is a reasonable default. Very short horizons (1-5 years) understate the gap; very long horizons (40+) overstate because people typically retire, change careers, or see raise rates decline.

If gap is against a peer at your company: Use transparency-law rights to request your salary band and midpoint in writing. Compare to your peer's known salary (via Glassdoor if public, or direct conversation if the relationship permits). Build a data-driven case to HRBP for an adjustment.

If gap is against external market: Test the market. Apply to 5-10 roles at the target level and metro. Collect offers. Use those as leverage for an internal raise or a pivot. The Salary Negotiation Checklist is the execution playbook.

If gap is structural (gender, race): File a wage-discrimination complaint with the EEOC (180-day window from most recent paycheck showing discriminatory pay). Title VII, Equal Pay Act, and various state laws prohibit pay discrimination. Some employers are subject to pay-data reporting requirements that can be FOIA'd.

Two analysts joined the same company in 2015. Analyst A negotiated aggressively, starting at $67,000. Analyst B accepted the first offer at $56,000. Both received identical 4% annual raises and were equally successful.

By 2025: Analyst A at $99,160. Analyst B at $82,900. Cumulative earnings difference over 10 years: $145,000. Projecting another 15 years at the same 4% raises: additional $380,000 in cumulative gap by year 25.

The one negotiation at hire, executed in about 2 hours of work, was worth more than $380,000 over the career. This is why every candidate should negotiate every offer — the math doesn't work out any other way.

The tool models a simple compounding gap with a fixed raise rate. Real careers have raise rate variation (higher early, lower later), promotions (which can accelerate one worker but not the other), and sabbaticals or career transitions (which can reset the calculation).

For a more sophisticated analysis, run the tool multiple times with different raise rates (3%, 4%, 5%) and different horizons (10, 20, 30 years) to get a range. The gap is usually in the $100k-$1M+ range for any meaningful starting-salary difference over a full career.

Pair with the Salary Negotiation Lifetime Value tool for more detailed compounding scenarios.

This is not legal or financial advice. Pay gap analysis is a complex area with interacting factors of role, industry, tenure, and individual performance. Legal claims of pay discrimination require specific evidence meeting Equal Pay Act, Title VII, or state statute thresholds. For formal discrimination claims, consult an employment attorney. For personal career decisions based on pay gaps, use this tool as a starting point, not a definitive guide.