A prenup for locum tenens physicians addresses a genuinely unusual financial situation: high, variable, multi-state income earned as an independent contractor, with no employer benefits, fluctuating assignment schedules, and a professional identity that is deliberately untethered from any single location. The marital property questions that flow from that setup are ones most prenup guides never touch — and the stakes are high enough that getting the answers right matters.
Why Locum Tenens Income Creates Unique Prenup Challenges
According to a widely cited industry estimate, more than 56,000 physicians work as locum tenens — though that figure has grown in recent years and current estimates from staffing industry analysts place the number higher. The US locum tenens market is projected to grow from approximately $9.1 billion in 2024 to $9.9 billion by 2026, according to market research tracking the physician staffing sector. This is no longer a niche side hustle — it's a mainstream career path with a distinct financial profile that standard prenup templates are not built to handle.
Pay rates vary significantly by specialty: hospitalists and family medicine physicians typically earn toward the lower end of the locum range, while anesthesiologists, cardiologists, and surgical subspecialists can command rates well above the specialty-wide average. That income variability — by specialty, by assignment volume, and by year — is precisely what makes a carefully drafted prenup for locum tenens physicians so important.
Most locum tenens physicians are classified as independent contractors and receive a Form 1099-NEC instead of a W-2. A 1099 only reports income; there are no deductions for federal income tax, Social Security, or Medicare. That means no employer-sponsored retirement plan, no automatic withholding, and — critically for a prenup — income that can spike or disappear depending on how many assignments a physician takes in a given year.
Locum tenens physicians owe self-employment tax — 15.3% on net earnings up to the Social Security wage base, plus 2.9% Medicare on earnings above that threshold. High-earning locum physicians (above $200,000 for single filers, $250,000 for married filing jointly) also owe an additional 0.9% Medicare surtax on earnings above those levels, a detail that is directly relevant given typical locum compensation. Add quarterly estimated payments and returns filed in every state where the physician worked, and the tax picture alone is complex enough to shape marital property outcomes.
The Multi-State Marital Property Problem for Locum Physicians
Here is where a prenup for locum tenens physicians becomes genuinely essential. When a physician works assignments in multiple states, the income earned in each state is subject to that state's tax laws — and those same sourcing rules matter in divorce.
In a community property state — Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin — income earned during marriage is generally owned equally by both spouses, regardless of who earned it. In equitable distribution states, courts divide marital property "fairly," which may or may not mean 50/50.
A locum physician who earns income in California one quarter, Texas the next, and Florida the quarter after that has created a financial record that crosses multiple legal regimes. Without a prenup, a divorce court in the couple's domicile state — the state where they are legally resident — will apply its own rules to characterize that income. Divorce jurisdiction is determined by domicile and residency, not by where income was earned or where state tax returns were filed; a physician who files non-resident returns in five states is not thereby subject to divorce proceedings in all five. The complexity arises not from jurisdictional exposure but from the fact that the couple may have changed domicile mid-marriage, and different states apply different rules to property acquired while living elsewhere.
A well-drafted prenup cuts through this complexity by clearly defining which income is marital property, which is separate, and how characterization rules apply regardless of where the couple is living when the marriage ends.
What a Prenup for Locum Tenens Physicians Should Address
Income Characterization in a Locum Tenens Prenup
The most fundamental question is whether locum income earned during the marriage is marital property. In most states, the default answer is yes. A prenup can modify that default — for example, by specifying that income earned from assignments negotiated before the wedding remains separate property, or by carving out a portion of each year's locum earnings as separate.
More practically, many locum physicians want to protect the upside of their work. If one spouse takes on more assignments, works nights and weekends, and builds a strong agency relationship, should the other spouse automatically own half of those extra earnings? A prenup can address this directly.
Business Entity Interests and Agency Relationships
If a locum physician forms an S-Corp or LLC to receive assignment income, that entity has value — and that value can become a marital asset if it grows during the marriage. A prenup should specify whether the entity itself, its retained earnings, and any goodwill it accumulates are marital or separate property.
Locum physicians should also consider how agency relationships interact with prenup provisions. An exclusive agency agreement, a non-compete clause in a staffing contract, or a long-term placement relationship can carry meaningful economic value. If those relationships were established before marriage or built primarily through one spouse's professional effort, a prenup can clarify their separate-property character.
S-Corp election is a common tax strategy for locum physicians with substantial 1099 income: the corporation pays the physician a reasonable salary, and remaining profits pass through without FICA taxes. The actual savings depend heavily on the reasonable compensation level set, the physician's total income, state tax treatment, and the added administrative costs of running payroll and maintaining corporate formalities. A CPA familiar with physician practice structures should model the numbers before any entity decision is made — and the prenup should address the entity specifically, not just "income" in the abstract. This overlaps with issues explored in our guide on Prenups for Doctors and Medical Professionals, but locum physicians face the added wrinkle that their entity may have no fixed location and no patient base.
Retirement Accounts and Locum Tenens Prenup Planning
Self-employed physicians can fund a Solo 401(k) or SEP-IRA at contribution limits far above what most employed physicians can access. For 2024, the IRS sets the Solo 401(k) and SEP-IRA limit at $69,000, plus a $7,500 catch-up contribution for those age 50 and older — for a maximum of $76,500 (IRS Publication 560). Those limits are indexed for inflation and should be verified for the applicable tax year at IRS.gov.
Accounts funded with marital-era income are typically marital property by default. A prenup can specify how those accounts are treated — whether the balance at the time of marriage is protected, how growth is allocated, and what happens to accounts opened during the marriage. For a deeper look at how prenups interact with retirement accounts generally, see Prenups and the SECURE Act: Protecting Retirement Accounts.
Variable Income and Spousal Support
Locum income is not a salary. A physician might earn $400,000 in a year of heavy assignments and $180,000 the following year after taking time off. That volatility matters enormously when a prenup addresses spousal support, because support calculations in most states are tied to income.
A prenup can include a formula for calculating support based on a rolling average of the physician's locum income rather than any single year's earnings — protecting both spouses from the distortions of an unusually high or unusually low year. It can also cap the duration of support or tie it to specific triggering events. Whether a prenup can waive spousal support entirely varies by state; some states limit or prohibit alimony waivers, and enforceability of such provisions should be confirmed with a licensed attorney in the governing jurisdiction.
Medical School Debt
Many locum physicians chose the locum path specifically to pay down substantial student loan debt. If pre-marital student loans are being repaid with marital income, a prenup can clarify that the debt remains the borrowing spouse's separate obligation and that repayment does not create a marital claim on the paying spouse's future earnings. See also: Can a Prenup Include a Plan for Paying Off Student Loans?
Signing Bonuses and Assignment Bonuses
Some locum agencies offer signing bonuses or completion bonuses for extended assignments. Whether those bonuses are marital property depends on when they were earned and when they were received — two things that don't always align. A prenup can specify the governing rule: for example, that any bonus tied to an assignment that began before the wedding is separate property even if payment arrives after the ceremony. For more on this issue, see Prenups and Signing Bonuses: Who Keeps the Money After Marriage?
Disability Insurance and Income Protection
High-demand locum specialties can generate substantial annual income — income that depends entirely on the physician's ability to work. A disability that ends or limits a locum career can devastate household finances, and if the couple divorces after a disability, the treatment of insurance proceeds becomes critical. A prenup can designate disability insurance proceeds as separate property, though enforceability of such provisions varies by state and should be reviewed with qualified counsel. Our guide on Prenups and Disability Insurance: Protecting Income If You Can't Work covers this in detail.
Enforceability: What Locum Physicians Need to Know
A prenup is only as good as its enforceability. As of 2024, approximately 28 states have adopted the Uniform Premarital Agreement Act (UPAA) or the updated Uniform Premarital and Marital Agreements Act (UPMAA) in some form, with remaining states applying their own common-law or statutory standards. A locum physician who moves between states during a marriage may find that the law of a new domicile state governs the agreement at divorce, which is one reason the choice-of-law clause deserves careful attention.
Key enforceability requirements in virtually every US state include:
- Written and signed before the wedding, not after
- Voluntary execution — neither party was coerced or pressured
- Full financial disclosure — both parties must disclose assets, income, and debts honestly
- Independent legal counsel — both parties should have their own attorneys; some states require this
Because locum physicians often have highly variable income that is difficult to project, the disclosure requirement deserves extra care. A physician who discloses only a single year's earnings — especially a low year — may face a challenge that the disclosure was incomplete. The prenup should document income over several years or explicitly acknowledge the variable nature of locum work.
A prenup's choice-of-law clause — specifying which state's law governs the agreement — is particularly important for locum physicians who may change domicile mid-marriage. The choice of governing state should be made deliberately, with guidance from an attorney who can assess how different states treat the specific provisions in the agreement: community property rules, alimony waiver enforceability, and disclosure standards all vary meaningfully. This is not a clause to default on.
What Happens With International Locum Assignments
Global locum assignments are increasingly common, particularly in the UK, Australia, Canada, and the Middle East. A physician who earns income abroad introduces additional complexity: foreign income may be subject to tax treaties, foreign earned income exclusions, and FBAR reporting requirements — all of which affect how that income is characterized and traced. A prenup drafted for a physician who later takes international assignments may need to address whether foreign-earned income follows the same characterization rules as domestic locum income, and which country's law — if any — applies to assets accumulated abroad. This is a gap worth raising explicitly with both a prenup attorney and an international tax advisor before signing.
Practical Steps Before You Sign
Start early. A prenup signed the week before the wedding is a red flag for courts evaluating voluntariness. Give yourself at least three to six months. See Should You Delay Wedding Planning Until the Prenup Is Signed? for a practical timeline.
Document your income history. Pull three to five years of 1099s, Schedule C or S-Corp filings, and state returns. Your attorney needs to understand the full picture of your locum earnings — not just the best year.
Identify every state you've worked in. Each state where you've earned income creates filing obligations and may affect how marital property is characterized if you later establish domicile there. Your prenup attorney and CPA should coordinate on this.
Address the entity. If you have or plan to form an S-Corp or LLC for your locum work, the prenup needs to address that entity specifically — not just "income" in the abstract.
Review it when your situation changes. A prenup written when you were doing occasional locum shifts may not reflect reality if locum work becomes your primary income. Consider whether a postnuptial amendment makes sense as your career evolves.
The financial life of a locum tenens physician — high income, variable assignments, multi-state exposure, self-employment tax complexity, potential international assignments, and a business entity that is essentially a one-person shop — creates marital property questions that a generic prenup template simply cannot answer. A prenup built around your actual practice structure, income history, and career trajectory is the only version worth having.
Frequently Asked Questions: Prenups for Locum Tenens Physicians
Do locum tenens physicians really need a prenup? More than most professionals, yes. The combination of variable 1099 income, multi-state work, self-employment tax complexity, and potential entity ownership creates marital property questions that standard divorce law handles poorly. A prenup lets you define the rules in advance rather than leaving them to a court.
How does locum income affect divorce proceedings? Locum income earned during marriage is typically marital property by default in most states. Its variability can complicate spousal support calculations, and its multi-state sourcing can create characterization disputes if the couple has lived in more than one state. A prenup can address all of these issues explicitly.
Can a prenup protect an S-Corp formed for locum work? Yes. A prenup can specify that the entity, its retained earnings, and any goodwill are separate property — or define how marital contributions to the entity's growth are treated. This should be drafted with specificity, not handled by a generic "income" clause.
What if my locum income changes dramatically after the prenup is signed? A prenup written during a period of lower income may not reflect your financial reality years later. Courts generally enforce prenups as written, but a postnuptial agreement can update the terms if both spouses agree. Building income-averaging formulas into the original prenup helps reduce the need for later amendments.
This article is for general information only and is not legal advice. Consult a qualified attorney in your jurisdiction.