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Locum & 1099 Physician Tax Strategies

A locum or 1099 physician is running a business, which opens deductions, entity elections, and owner-funded retirement plans that W-2 doctors cannot use. This guide covers the tax moves and plans that matter most for independent physicians.

Reviewed by Alexander Tecle, MBA, MS Taxation

President & Founder · Verify on SEC IAPD (opens in a new tab)

Reviewed

Your business shapes the plan

  1. Owner goals

    Start with compensation and the retirement benefit you want to build.

  2. Your team

    Employee ages and compensation affect the design.

  3. Funding capacity

    Review the ongoing commitment alongside your cash flow.

Working as a locum or 1099 physician means you're effectively running a business, which opens up deductions and retirement plans that W-2 employees can't touch. The flip side is that no one withholds your taxes or sets up your retirement for you.

This guide covers the tax moves and retirement plans that matter most for independent physicians, from entity choice to six-figure pension contributions.

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Calculators

From the case files

$101,850 Taxes Saved | Solo ProfessionalLocum Physician Case Study: $101,850 Saved AnnuallyIllustrative client outcome — read the case study
2026 contribution limits at a glance
Limit20262025
401(k) / 403(b) employee contribution$24,500$23,500
Catch-up contribution (age 50+)$8,000$7,500
Total additions to a defined contribution plan — IRC 415(c)Employer + employee; excludes age-based catch-up.$72,000$70,000
SEP-IRA maximum (lesser of 25% of compensation or this)$72,000$70,000
Traditional / Roth IRA contribution$7,500$7,000

Official IRS figures for 2026. Source: IRS Notice 2025-67 (IR-2025-111).

Why 1099 status is an opportunity

As an independent contractor you can deduct legitimate business expenses, choose a tax-efficient entity, and open powerful retirement plans — turning a higher tax bill into long-term wealth.

Retirement plans for locum doctors

High, variable income makes locum physicians ideal candidates for Solo 401(k)s and, for consistent earners, cash balance plans that can shelter six figures per year. See the Retirement Plans and Cash Balance guides for the mechanics.

Year-round tax planning

The biggest savings come from decisions made before year-end — estimated taxes, retirement funding, and entity elections. The locum tax articles below walk through each.

  1. Track 1099 income

    Contract earnings establish the business income available for expenses and plan contributions.

  2. Choose the structure

    Select the entity and document legitimate business expenses for the practice.

  3. Match the retirement plan

    Use a Solo 401(k), then consider a cash balance plan when earnings are consistent enough.

  4. Act before year-end

    Coordinate estimated taxes, retirement funding, and entity elections before deadlines pass.

How a locum physician coordinates contract income, entity choices, and retirement funding.

Related articles

Frequently asked questions

Should a locum physician form an S-corp?

Sometimes. An S-corp can reduce self-employment tax for consistent earners, but it adds payroll and administration. The right answer depends on your income and expenses — model it before deciding.

What retirement plan is best for a 1099 doctor?

Often a Solo 401(k) to start, then a cash balance plan layered on top once income is high and stable enough to support larger annual contributions.

Sources

  1. IRS — Self-employment tax (Social Security and Medicare taxes) (opens in a new tab)
  2. IRS — Retirement plans for self-employed people (opens in a new tab)
  3. IRS — One-participant 401(k) plans (opens in a new tab)
  4. IRC §1402 — net earnings from self-employment (opens in a new tab)
  5. IRC §1362 — S corporation election (opens in a new tab)

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See what your practice could fund

Model a contribution for an owner in your field from age and compensation alone. The result is an illustration with its assumptions shown, not a quote.

This guide is educational and is not individualized tax, legal, or investment advice. Contribution limits and tax rules change annually and depend on your specific situation; figures are illustrative. Consult a qualified professional before acting.