Lockstep vs. Eat-What-You-Kill Calculator: Big Law Partner Income Comparison

The two dominant Big Law compensation structures produce dramatically different financial outcomes depending on your book of business size, client portability, and how many years you model. Lockstep delivers predictable annual step-ups regardless of your origination; EWYK is uncapped but volatile. This calculator shows the year-by-year gross and after-tax income under both structures — and the year, if any, when one overtakes the other.

The analysis that matters most: at your current book and realistic growth rate, does EWYK ever catch lockstep? If yes, when? If no, how much does lockstep lead by year 10?

How to read the results

The annual leader column shows which structure pays more in each year. A late-career crossover year is common when EWYK starts below lockstep but grows faster. The cumulative gross total is usually what determines the better 10-year decision, but consider two additional dimensions the table doesn’t capture:

• Income variability. Lockstep is guaranteed. EWYK year-to-year income swings with client billing, firm profitability, and collection rates. Partners in EWYK firms regularly see 20–40% income variation between good and bad years. Your emergency fund and fixed expenses need to match the EWYK floor (base draw), not the average.
• The ceiling. Most lockstep scales top out — at Cravath-equivalent firms, senior partners may be capped at $1.5–$3M regardless of origination. EWYK has no ceiling. At Kirkland and Quinn Emanuel, partners with $50M+ books report $10–$30M in annual income. If you have a massive portable book, EWYK offers upside that no lockstep scale can match.

When lockstep wins

• Your book is small or client relationships are firm-dependent. Institutional clients who retain the firm, not you, won’t follow a lateral. EWYK only makes sense if your book is genuinely portable.
• You are early in partnership. Associates transitioning to equity often underestimate how long it takes to build origination credit. For years 1–5, lockstep protects your income floor while you develop your practice.
• Your practice area is commodity or low-origination. Document review, staff attorney roles, and support practices don’t generate the origination that drives EWYK income.
• Compensation risk tolerance is low. If a 30% income reduction in a bad year would threaten your capital account obligations, mortgage, or family financial goals, lockstep certainty has real economic value.

When EWYK wins

• You have a large, demonstrably portable book. Clients have explicitly said they’ll follow you; you have a track record of lateral moves with intact relationships. Every dollar of origination flows to your income rather than being shared under lockstep’s redistribution.
• You are a senior partner at a lockstep firm being held below what your book warrants. The structural cap on lockstep comp is precisely why high-originators defect to EWYK firms like Kirkland. If your book is generating $10M+ in annual billings and your lockstep income is $2M, the gap is real.
• You’re willing to invest in book growth. EWYK rewards rainmakers. If you are willing to eat a lower year-1 income to build client relationships that compound over time, the long-term income curve can be significantly steeper.
• Your practice group is moving. Many high-origination practice groups (especially M&A, PE, and restructuring) have migrated to EWYK or hybrid-EWYK platforms where compensation tracks the work more directly.

What the model does not capture