Your First Year as a BigLaw Equity Partner: Financial Planning Guide

The day you sign your partnership admission documents, several things become true at once: you owe the firm $200,000–$800,000 in capital, your W-2 withholding stops, your effective tax rate just went up (SE tax on top of income tax), and a November or December deadline for an irrevocable deferred compensation election is approaching. This guide covers what to do — and when — in your first 12 months as an equity partner.

What actually changes at partnership

If you spent seven or eight years as an associate, your financial life was relatively streamlined: W-2 income, automatic tax withholding, employee benefits. Partnership changes all of it simultaneously:

• W-2 → K-1. You are no longer an employee. Your compensation arrives as K-1 partnership income — no withholding, no automatic payroll taxes deducted. You now owe taxes in quarterly installments.
• SE tax kicks in. As an employee, your firm paid half your FICA taxes. As a partner, you pay both halves — self-employment tax on top of income tax. On a $700,000 K-1, that is an additional $43,000+ in taxes most new partners didn't budget for.¹
• Capital contribution. Your partnership admission agreement obligates you to fund a capital account — typically $200,000–$800,000 depending on firm size and tier. This payment is usually staged and often funded through a firm loan, but the obligation is real and immediate.
• Benefits transition. Group health insurance, disability coverage, and other employee benefits all change. The firm-partner benefit structure is different from the associate plan — sometimes better, sometimes worse.
• NQDC eligibility. If you weren't previously eligible for the firm's non-qualified deferred compensation plan, you likely have a one-time initial election window. This is the most irrevocable decision of year 1.

Capital contribution: funding the buy-in

The capital contribution is not optional and it is not cheap. At AmLaw 100 firms, first-year partner capital contributions commonly range from $400,000 to $800,000, staged over two to four years. AmLaw 200 firms tend toward $200,000–$500,000. Some boutiques are lower; some elite firms are higher.

Most firms fund the initial contribution through a firm-sponsored loan at a stated interest rate (typically the Applicable Federal Rate plus a spread, often 2–4%). The loan is repaid through withholding from distributions — so you don't write a single $400,000 check, but you do have an after-tax cash obligation from day one.

See How to Fund a $400K+ Law Firm Capital Contribution for the full comparison across all six funding options.

SE tax: the year-1 tax shock

The self-employment tax surprise is the most common financial shock for new partners. Here is the 2026 structure:¹

• 12.4% Social Security tax on net self-employment income up to $184,500 — maximum contribution $22,878.
• 2.9% Medicare tax on all net SE income above the SS wage base — uncapped.
• 0.9% Additional Medicare Tax on income above $200,000 (single) / $250,000 (MFJ) — not matched by any employer deduction.
• Deductible half of SE tax is deductible from gross income above the line — approximately 7.65% of SE income reduces your AGI but not your SE income base.

For a new equity partner with $700,000 in K-1 ordinary income: SE tax is roughly $43,000–$44,000 on top of a federal income tax bill that, at 37%, already exceeds $200,000. The combined federal burden (income + SE + 0.9% AMT) exceeds 40% of income before state taxes apply.

First-year partial-year trap: If you were a W-2 associate for part of the year and became a partner in July or October, your employer withheld Social Security taxes on your W-2 wages — possibly up to or near the $184,500 cap. The partnership doesn't know how much SS you already paid. The Social Security portion of your SE tax is calculated independently on Schedule SE, but any excess withholding is claimed as a credit on your return. Get your W-2 wage figures to your CPA before the first quarterly payment.

§199A QBI deduction: the deduction most partners can't use

The OBBBA (July 2025) made the §199A QBI deduction permanent for pass-through businesses — a significant benefit for most self-employed professionals. Law firm equity partners largely can't use it. Law firms are Specified Service Trades or Businesses (SSTBs), and for SSTBs the deduction phases out entirely as income rises above the thresholds.³

2026 §199A SSTB phase-out: The deduction begins phasing out above $201,775 (single) / $403,500 (MFJ) and disappears completely above $276,775 (single) / $553,500 (MFJ). A first-year equity partner at an AmLaw 200 firm earning $400,000–$600,000 is typically above the complete phase-out threshold. There is no QBI deduction available.

Setting up quarterly estimated taxes

Once you stop receiving W-2 wages, you must make quarterly estimated tax payments to the IRS (and most states). The 2026 due dates are April 15, June 16, September 15, and January 15, 2027. Failure to pay enough triggers a penalty under IRC §6654 — calculated separately from any tax you owe at filing.⁴

The safest approach for a new partner: use the prior-year safe harbor. Pay 110% of your prior-year tax bill in four equal installments. This eliminates the penalty regardless of how much you earn in the current year. In your first year as a partner, your prior-year tax was based on W-2 income — likely much lower than your current-year income will be. Consider using the annualized income method instead if your income is genuinely higher, to avoid paying too little in Q1–Q3.

See Estimated Quarterly Tax Payments for Big Law Equity Partners for the full mechanics and interactive calculator.

Benefits overhaul at partnership

Health insurance

At many Big Law firms, partners transition from the employee group health plan to a partner-specific structure. The economics vary widely: some firms continue full coverage, others shift more cost to partners (often with higher reimbursements from distributions). The key change from a tax standpoint: as a self-employed partner, you may deduct 100% of health insurance premiums under IRC §162(l) — but only if you are not eligible for subsidized coverage through a spouse's employer plan.³

Disability insurance

If you bought individual disability insurance as an associate — which is the right move — review your coverage limits now. Your income likely just increased significantly. The benefit amount you locked in at Year 4 may be materially below your new earning capacity. If your policy has a Future Increase Option (FIO) rider, now is the time to exercise it. If it doesn't, your insurer may require new underwriting at the higher benefit.

Group LTD coverage through the firm typically caps at $10,000–$20,000/month. With partner income of $500,000–$800,000+, the gap is enormous. See Disability Insurance for Big Law Lawyers for coverage sizing guidance.

HSA opportunity

If the firm offers a High Deductible Health Plan (HDHP) option and you choose it, establish an HSA in year 1. The 2026 limits are $4,400 for individual coverage and $8,750 for family coverage, with an additional $1,000 catch-up for those 55 and older.⁵ At a combined federal + state marginal rate of 45–50%, maxing a family HSA generates $4,000+ in immediate tax savings. Unlike an FSA, the HSA balance carries forward indefinitely — use it as a supplemental retirement account by paying medical expenses out of pocket and letting the HSA grow.

401(k) and retirement savings in year 1

As an equity partner at an AmLaw firm, you typically remain in the firm's 401(k) plan. The deferral limit in 2026 is $24,500 ($32,500 if you're 50 or older with the $8,000 catch-up). The combined limit including employer contributions — profit-sharing, match, and your deferral — is $72,000 under §415(c).⁵

The partnership transition often increases your share of the firm's profit-sharing contribution. Partners at many Big Law firms receive a larger employer contribution than associates — sometimes filling or nearly filling the $72,000 combined limit. Know what the firm contributes on your behalf before you set your personal deferral amount, so you don't overshoot the §415(c) limit.

If the firm has a cash balance plan, your first year of eligibility is not too early to participate. The benefit is driven by credited interest plus annual contributions sized to your age (older partners can shelter more). Starting contributions early maximizes the compounding advantage. See Cash Balance Plans for Law Firm Partners.

NQDC first election: the most irrevocable decision of year 1

Non-qualified deferred compensation plans (NQDC) allow Big Law equity partners to defer a portion of current partnership income to a future distribution date — with a goal of paying tax in a lower-bracket year (departure gap, retirement, sabbatical). The annual tax benefit at a 37% marginal rate can be substantial over a 10–20 year deferral window.

The critical issue: under §409A, election timing is strictly controlled. Normally, elections must be made before the start of the calendar year in which compensation will be earned — by December 15 at most Big Law firms. But for new plan participants who have never previously been eligible, §409A allows a one-time initial election within 30 days of first becoming eligible to participate. This initial election only applies to compensation earned after the election date — it is prospective only.

Use the NQDC Deferral Optimizer to model the lifetime tax advantage of different deferral amounts and distribution timing strategies before making your election.

Understanding your first K-1

Your K-1 (Schedule K-1, Form 1065) from the firm will arrive in March — often as late as mid-March. This is why Big Law associate-to-partner returns often require extensions: you can't file accurately until the K-1 arrives. Key boxes to understand:

• Box 1 — Ordinary business income: Your share of firm net income. Subject to SE tax and ordinary income tax. This is the largest number on the K-1 for most partners.
• Box 4 — Guaranteed payments: A floor compensation the firm pays before distribution. Also subject to SE tax and ordinary income tax. Some firms use this structure; most Big Law firms pay through distribution shares rather than guaranteed payments.
• Box 9/10 — Capital gains: Long-term or short-term gains from firm investment positions. Not subject to SE tax. May be subject to NIIT at 3.8%.
• Box 20 — Other information: Includes §199A QBI information, excess business interest expense, and other items your CPA will need for the return.

Give your CPA your K-1 as soon as it arrives. If the firm has offices in multiple states, the K-1 will include multi-state apportionment information — you may owe income tax in states where you never set foot, based on the allocation of firm income to those offices.

Year-1 financial checklist: month-by-month

Check off each item as you complete it. Your progress is tracked below.

Do you need a specialist financial advisor?

The first year of equity partnership is the highest-financial-stakes transition in a BigLaw career. The decisions made in months 1–12 — NQDC deferral amount, distribution timing, capital contribution structure, estimated tax methodology, 401(k) vs. cash balance vs. NQDC priority — are largely irrevocable or have long compounding effects. A generalist advisor who does not work with partnership K-1 income, §409A mechanics, and multi-state apportionment will miss the leverage points. The right time to engage a specialist is before your partnership admission, not after your first K-1 arrives in March.

See How to Choose a Financial Advisor for Big Law Attorneys for credentials to look for and interview questions to ask.

Related guides

• Pre-Partnership Financial Checklist — what to do in the 18 months before partnership day
• NQDC Deferral Optimizer — model the lifetime tax advantage of different election choices
• Equity Partner Tax Planning: K-1, SE Tax, AMT & Estimated Payments
• Estimated Quarterly Tax Payments for Big Law Equity Partners
• How to Fund a $400K+ Law Firm Capital Contribution
• Cash Balance Plans for Law Firm Partners
• Disability Insurance for Big Law Lawyers

1. Social Security Administration — Contribution and Benefit Base 2026: $184,500. SE tax structure: 12.4% SS up to wage base, 2.9% Medicare uncapped, 0.9% AMT above $200K single. Verified April 2026.
2. IRC §163(d) investment interest expense deduction — IRS Publication 550, Investment Income and Expenses. Partnership capital loan interest deductibility depends on tracing and net investment income.
3. IRS Rev. Proc. 2025-61 — 2026 §199A thresholds; OBBBA permanent QBI deduction; IRC §162(l) self-employed health insurance deduction. 2026 SSTB phase-out begins $201,775 (single) / $403,500 (MFJ); complete at $276,775 (single) / $553,500 (MFJ).
4. IRC §6654 — estimated tax penalty for individuals; IRS Estimated Taxes for Self-Employed Individuals. Q1–Q4 2026 due dates verified.
5. IRS Rev. Proc. 2025-32 — 2026 contribution limits: 401(k) elective deferral $24,500; §415(c) combined limit $72,000; HSA self-only $4,400 / family $8,750. Verified April 2026.

Values verified as of April 2026 against IRS, SSA, and OBBBA legislative text. Tax law changes annually; verify current-year values at IRS.gov before making irrevocable elections.