Telehealth nexus: where remote practice creates filing duties

Do I owe taxes in states where my telehealth patients live?

Usually, no — as a general rule you owe income tax where you perform the work, typically your home or office state, not merely where a patient sits during a visit 1Ref 1Internal Revenue Service (2026).Self-employed individuals tax center.That federal self-employment tax and the federal return are computed on net earnings regardless of where patients live — the constant federal layer beneath a variable multistate analysis.. But this is a state-by-state question, and that caveat belongs on the first screen, not in a footnote: some states assert economic or market-based nexus that can reach a provider serving their residents, and a physical foothold in a state — a rented office, a resident employee — creates a filing duty on its own. There is no single national answer.

The safe way to think about it is that the patient's location does not, by itself, automatically create income-tax nexus for a home-based telehealth clinician — but it can, depending on the state. Your federal picture does not change with geography: federal self-employment tax and quarterly estimates are computed the same way no matter where your patients live 1Ref 1Internal Revenue Service (2026).Self-employed individuals tax center.That federal self-employment tax and the federal return are computed on net earnings regardless of where patients live — the constant federal layer beneath a variable multistate analysis.. It is the state layer that multiplies, so the discipline is to check each state's own rules rather than generalize from one.

What 'nexus' means and the two ways it appears

Nexus is simply the connection that gives a state enough of a claim on you to require a tax filing. For a solo telehealth practice it shows up in two distinct forms, and conflating them is where clinicians get the analysis wrong. Keeping them separate is the whole skill.

• Income-tax nexus determines whether a state requires an income-tax return from you. You generally have it in your home state, and you may pick it up in another state through physical presence there or — in states that assert it — through economic activity with that state's residents.
• Payroll and withholding nexus is separate and appears the moment you employ someone who works in another state. Hiring a W-2 employee triggers the obligation to withhold and deposit income tax, Social Security, and Medicare federally 2Ref 2Internal Revenue Service (2026).Understanding employment taxes.That employing a worker triggers withholding and deposit of income tax, Social Security, and Medicare federally — the payroll obligation that, with a remote employee, extends into that employee's work state., and the employee's work state generally adds its own withholding and unemployment registration.

A solo who practices alone from one state usually has one income-tax home and no payroll nexus anywhere. Add a remote employee, a satellite office, or economic activity a state chooses to tax, and the map grows — deliberately check for each trigger rather than discovering it at filing.

Licensure is not tax nexus

Holding a professional license in a state so you can legally treat its residents is not the same as owing that state income tax. These are separate registers governed by separate authorities: your medical or clinical board licenses you to practice; a state's department of revenue decides whether you have a tax-filing duty. You can be licensed in six states and owe income tax in one, or owe tax in a state you are not licensed in because you have an office there. Do not let a stack of licenses convince you that you have six state returns to file.

A third register is coverage, and it is separate again. Whether a service is payable as Medicare telehealth is set by CMS's published list of telehealth services, which names permanent and temporary codes and audio-only eligibility as of the current year 3Ref 3Centers for Medicare & Medicaid Services (2026).List of Telehealth Services.That whether a service is payable as Medicare telehealth is set by CMS's published list as of the current year — a coverage question distinct from state income-tax nexus. — a reimbursement question that has nothing to do with which state can tax your income. When you are adding a state to your practice, run the licensure, coverage, and tax questions as three checklists, because a yes on one does not answer the others, and treating them as one question is how obligations get missed.

When patient-state activity does create a duty

The general rule bends when a state has a specific hook into your practice, and because states write their own rules, the honest guidance is to check each state's department of revenue rather than assume. The situations that most often create a filing duty in a patient's state:

• A physical presence there — a rented office, a co-located exam room, or property you use for the practice.
• An employee working in that state, which creates payroll nexus and often income-tax nexus for the business.
• Economic or market-based nexus, where a state asserts the right to tax income sourced to services delivered to its residents once activity crosses that state's threshold.

Because these thresholds and sourcing rules vary — and some states have none while others are aggressive — never take one state's rule as the national rule. Confirm the current-year threshold with each state's revenue department, and where two states could both claim the same income, the resident-state credit for taxes paid to another state is usually what prevents actual double taxation. This is a spot where a multistate CPA earns their fee: the framework here tells you which states to check, and they tell you exactly what each one requires.

The multistate filing sequence for a solo

When more than one state might have a claim on your income, a short, repeatable sequence keeps the filing straight and prevents both missed returns and needless ones. Run it once a year, and again whenever your footprint changes — a new office, a remote hire, or a move:

1. List every state you touch — where you live and work, where you have an office or property, and where any employee works. 2. Check each state's revenue department for its filing threshold and whether it asserts economic nexus over out-of-state providers. 3. Separate resident from nonresident returns — your home state generally taxes all your income; a nonresident state taxes only income sourced there. 4. Apportion income where a state taxes only its share, following that state's sourcing method. 5. Claim the credit for taxes paid to other states on your resident return to avoid paying twice on the same dollar. 6. Calendar each state's deadlines the day you confirm them.

The point of the sequence is that multistate exposure is discovered by checking, not by waiting for a notice. A clinician whose whole panel is virtual from one state usually finishes at step three with a single return; a clinician with an office or employee in a second state has real work to do — and now knows exactly where.

The federal layer doesn't change — but your quarterlies might

No matter how many states end up on your map, your federal obligations are constant: self-employment tax on your net earnings and the same federal return you would file with a single-state practice 1Ref 1Internal Revenue Service (2026).Self-employed individuals tax center.That federal self-employment tax and the federal return are computed on net earnings regardless of where patients live — the constant federal layer beneath a variable multistate analysis.. What multistate practice changes is the number of estimated payments you juggle, since states that tax you generally expect their own quarterly estimates alongside the federal ones. Estimated tax is paid quarterly, with safe-harbor rules — generally 90% of the current year or 100%/110% of the prior year — that keep an underpayment penalty off the federal return 4Ref 4Internal Revenue Service (2026).Estimated taxes.That federal estimated tax is paid quarterly with safe-harbor rules (90% current-year or 100%/110% prior-year), and multistate practice adds each taxing state's own quarterly estimates., and each taxing state runs its own version.

Two housekeeping points keep this manageable. First, your tax home is where you regularly work, and for a home-based telehealth clinician that home office is the principal place of business 5Ref 5Internal Revenue Service (2026).Home office deduction.That a home used regularly and exclusively for the practice is the principal place of business — the tax-home anchor for a home-based telehealth clinician's multistate analysis. — the anchor state for the whole analysis. Second, the local layer sits underneath the state layer: a city or county where you have a presence may add its own tax on top of the state's. Build every state's and locality's estimate into one quarterly calendar so nothing is paid late, and revisit the whole picture whenever you are adding a state to the practice.