About the Salary Negotiation Calculator

Choosing between two job offers — or deciding whether a counter-offer is worth accepting — is rarely just about the base salary. Total compensation includes bonuses, equity, retirement contributions, benefits, and the cost-of-living adjustments needed to compare roles in different cities or countries. This calculator models the full 5-year financial picture of two competing offers so you can make a decision based on real numbers rather than the headline figure alone.

How the calculation works

For each offer, the calculator projects compensation over a 5-year period, applying your specified annual raise rate to the base salary each year. It adds the annual bonus (as a percentage of base), employer retirement contributions, and the monetary value of benefits such as health cover, gym membership, and transport allowances. It then applies the cost-of-living index to normalise both offers to a common baseline — critical when comparing roles in cities with very different living costs. The cumulative chart shows which offer delivers more total value year by year, and by how much.

Understanding cost-of-living adjustment

A salary of $100,000 in a low-cost city may provide significantly more purchasing power than $120,000 in an expensive global hub. The cost-of-living index in this calculator uses 1.00 as a global baseline. A value of 1.30 means living costs are 30% above baseline (like London, Singapore, or Zurich), while 0.75 means 25% below (like many cities in Eastern Europe, Southeast Asia, or Latin America). Adjusting for cost of living transforms nominal salaries into real purchasing power, which is the number that actually matters for your quality of life.

Factors beyond the numbers

• Equity and stock options: RSUs and stock options can be worth far more than base salary over time — but they come with vesting schedules and company risk. The calculator models equity growth at your specified rate, but remember that unvested equity is never guaranteed.
• Career trajectory: A lower-paying role at a high-growth company or in a higher-prestige field may accelerate your career and lead to larger salary gains in years 3–10 that this model doesn't capture.
• Work-life balance: Expected working hours, remote flexibility, commute time, and company culture have real monetary value — a role requiring 60-hour weeks effectively reduces your hourly rate significantly.
• Job security: A startup with great comp but low stability may be worth less than a lower-paying role at an established organisation with strong job security.
• Benefits quality: Health insurance quality, parental leave, and retirement matching can vary enormously between employers and have significant real-world value.

Tips for salary negotiation

• Always negotiate — the majority of employers expect it and initial offers are rarely the maximum. Even a modest negotiation outcome compounds significantly over a career.
• Negotiate total compensation, not just base salary. Signing bonuses, extra leave, remote work flexibility, and accelerated equity vesting are often easier for employers to grant than base salary increases.
• Use competing offers as leverage when possible — a genuine competing offer is the most powerful negotiating tool available.
• Research market rates using multiple sources before entering negotiations so you can anchor on a well-justified number.
• Consider the long-term: a 10% higher starting salary, compounded with annual raises, can translate to hundreds of thousands in additional lifetime earnings.

When the lower offer might actually be better

Sometimes a lower base salary offer is the right choice — if it comes with stronger equity at a high-growth company, a significantly lower cost-of-living location, far better career development opportunities, or a work environment that protects your health and relationships. The calculator helps you quantify the financial trade-offs so you can weigh them alongside the non-financial factors that matter to you.