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Most employers get the payroll basics right. Federal income tax, Social Security, Medicare, remitting on schedule. That part runs without much friction. But the moment someone starts working from a home office in a different state, a separate layer of obligations kicks in, and that is where companies, even experienced ones, quietly fall behind.
State tax withholding for remote employees is not complicated in theory. In practice, it causes real problems. The reason is rarely negligence. It is a set of assumptions that made sense when everyone worked in the same building and stopped making sense the day the first person started working remotely from another state. By the time most businesses realize there is a problem, the error has often been running for months, and unwinding it costs considerably more than getting it right from the start would have.
The Assumption That Payroll Follows the Company
Most withholding mistakes begin the same way. The employer assumes that if the company is in Indiana, all payroll taxes go to Indiana.
That is not how it works.
For remote employees, state income tax withholding generally follows the employee’s work location rather than the employer’s address. The state where the work is physically performed is, in most cases, the state with the right to tax that income. So if your company is headquartered in Indianapolis and one of your staff members lives and works full-time in Ohio, Ohio has a claim on those wages. Not Indiana. Running payroll as though Indiana is the relevant state creates a withholding error from day one, and states can look back three to five years when they audit.
Many companies built their payroll setup when everyone was in one location. Nobody revisited it when people started working remotely. The structure that worked in 2019 is still in place today, and the payroll responsibilities that come with hiring across state lines are causing errors throughout.
Residency vs. Work Location
The work location rule is the starting point, but it does not cover every situation. Some employees live in one state and work in another. Some split their time. Some relocated after being hired and mentioned it to their manager, but not to HR. Each scenario comes down to the same question. Which state, or states, has the right to withhold income taxes from this person’s wages?
For employees who live and work entirely within one state, the answer is clear. The difficulty comes when those two things do not match.
Several states have reciprocity agreements that address exactly this situation. These agreements allow an employee who lives in one state and works in another to pay income taxes only to their state of residence, rather than splitting the obligation between both states. Indiana has reciprocity agreements with Kentucky, Michigan, Ohio, Pennsylvania, and Wisconsin, among others. Employers with staff in those neighboring states may be able to direct withholding to the employee’s home state rather than Indiana, but only if the proper withholding certificate is on file and someone has actually acted on it.
Many do not. The reciprocity agreement exists on paper. Nobody applies it. The employee gets taxed incorrectly, the error sits in the system, and eventually it surfaces during a state audit or at tax return time. According to IRS guidance on withholding compliance, the obligation to withhold correctly falls on the employer, not the employee, regardless of whether anyone on the payroll team knew about the agreement.
Convenience of the Employer Rule
There is a less familiar withholding rule that runs against the normal logic, and it catches employers off guard for exactly that reason.
Several states, most notably New York, apply a rule known as the convenience of the employer rule. If an employee works remotely from another state for personal reasons rather than because the employer requires it, the employer’s home state may still claim the right to withhold taxes on those wages. An employee who moved from New York to Pennsylvania and continues working remotely for a New York-based employer may still owe New York state income tax, even though every hour of actual work happens in Pennsylvania.
Arkansas, Connecticut, Delaware, Nebraska, and Pennsylvania have similar rules. For most Indiana-based employers, this does not come up often. But assuming it does not apply without checking is how withholding errors develop in states nobody anticipated. A quick review at the point of hire, before payroll is configured, costs almost nothing.
Tax Nexus
Beyond the employee’s individual withholding situation, there is a broader implication worth understanding. When one of your remote team members works from a home in a state where your company has no physical presence, that arrangement may create tax nexus for your business in that state.
Nexus means a connection to a state substantial enough to trigger tax registration and payroll withholding obligations. Most states treat an employee working within their borders as sufficient to establish it. And honestly, most employers find this out later than they should. Once the nexus exists, the employer must register with that state’s Department of Revenue and open a withholding account before the first paycheck is issued.
State agencies have improved considerably at identifying payroll activity from out-of-state employers that have not registered. When they find it, non-compliance is treated as effective from the date the employee started work, not from the date the employer became aware. Late registration, more than anything else, is where payroll tax penalties and IRS fines tend to originate.
Where Multi-State Payroll Actually Breaks Down
Managing payroll across multiple states is not a one-time configuration. The variables change, often without the employer knowing.
Employees move without updating payroll. Someone hired into a remote role in Florida relocates to Illinois six months later. HR does not get the update. The employer keeps withholding for Florida, which has no income tax, while Illinois builds an unpaid tax obligation on the employee’s side and a registration gap for the employer.
Employees work from multiple locations. Client-facing or project-based roles often involve working across states throughout the year. Most states source wage income based on physical presence, meaning days worked in a state can create a partial withholding obligation there. Without a system for tracking actual work locations, payroll decisions are based on incomplete records.
State rules shift. Multi-jurisdiction payroll requirements are not fixed. States update their nexus thresholds, enforcement posture, and withholding rules. What satisfied compliance two years ago may not today. Staying current across every state where staff members work is a real ongoing function, not a one-time setup task.
The Society for Human Resource Management identifies multi-state payroll compliance as one of the most frequently mishandled employer compliance areas, largely because errors accumulate gradually rather than appearing all at once.
Worker Classification Problem
Some companies try to sidestep cross-state payroll obligations by classifying workers as independent contractors. The logic is straightforward enough. Contractors manage their own taxes, so there is no withholding obligation on the employer’s side.
That only holds when the classification is correct.
The Internal Revenue Service and state agencies each apply their own tests to determine whether a worker is a genuine independent contractor or a de facto employee. Those tests focus on behavioral control, financial control, and the overall working relationship. A worker who follows company direction, uses company tools, and works primarily for one organization is likely an employee under most state and federal standards, regardless of what the contract says.
Payroll tax misclassification is actively audited. Back taxes, interest, and benefit liabilities can span multiple years. That cost tends to be substantially higher than whatever the employer was trying to avoid by not setting up a withholding account in a new state.
Classify correctly. Then manage the obligations that follow.
What Getting This Right Actually Requires
Employer tax compliance for a distributed workforce is not a single decision. It is a process that needs to be set up correctly from the start and kept up to date as the workforce changes.
At a practical level, that means confirming each employee’s actual work location at hire, not just their mailing address. Checking whether reciprocity agreements apply and collecting the right withholding certificates. Registering with each applicable state before the first paycheck runs. Updating records when people relocate. And monitoring for rule changes in every state where your workforce operates.
For a company with staff in two or three states, that is manageable with the right internal structure in place. Across many states, it becomes a significant ongoing function, and the risk of gaps grows with each state added.
WorkSmart’s payroll processing and tax assistance team handles this as part of standard operations. WorkSmart supports businesses headquartered primarily in the Midwest, with employees working across 47 states. Staying current with withholding requirements, tracking registration obligations as they apply to a specific workforce, and catching issues before they become penalty notices is the work, not a special project.
For Indiana businesses, WorkSmart’s PEO services for Indiana businesses are built around this kind of compliance support. The same applies as your workforce expands into Ohio, Kentucky, Michigan, and Illinois.
For small and mid-size businesses without a dedicated in-house tax specialist, that support is worth more than most employers realize until something goes wrong.
If your business has employees working remotely across state lines and you are not fully confident your withholding is correct, the time to address it is before a state agency raises the question.
WorkSmart Systems has been helping Indiana-based and Midwest businesses manage payroll, HR compliance, and employee benefits since 1998. If you want to get your remote workforce payroll handled correctly, we are ready to walk through what that looks like for your specific situation.
Contact WorkSmart Systems today to schedule a consultation.
FAQs
Which state do you withhold taxes for remote employees?
In most cases, the state where the employee actually works. That is where the withholding obligation sits, regardless of the company’s location. Nine states have no income tax at all and they are Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. For everyone else, work location drives the withholding decision. Reciprocity agreements between certain states can shift that obligation to the employee’s home state, but only when the right documentation is in place.
Do employers withhold taxes based on employee location?
Yes, generally. Most states care more about where the employee works than where the company is located. Your business address matters for your own entity taxes, but it does not override another state’s right to tax wages earned within its borders. Reciprocity agreements and the convenience rule in certain states create specific exceptions, but those apply to defined situations, not as a default.
Do remote employees pay taxes in multiple states?
They can. An employee who physically works in two or more states during a year may have tax obligations in each. Most states provide credits to prevent the same income being taxed twice, but the employer is still responsible for withholding correctly for each state where work is performed. When withholding is sent to the wrong state, the employee ends up with a shortfall at filing time, even if money was withheld somewhere.
How do I handle taxes for remote employees in another state?
First, confirm where the employee actually performs their work, not just where they live. If that state has an income tax, register with its Department of Revenue before payroll runs and open a withholding account. Check whether any reciprocity agreements apply and collect the appropriate withholding certificates. After that, keep the record up to date if their work situation changes.
What happens if I withhold taxes to the wrong state?
The employee faces a tax liability in the correct state and typically has to claim a refund from the wrong one, which creates complications at filing time. For the employer, it can mean back taxes owed to the correct state plus interest and penalties covering the length of the error. States can audit payroll records for three to five years, so even a single misclassified employee can expose the employer to substantial liability.
What is the convenience of the employer rule, and does it apply to my business?
A handful of states, New York being the most prominent, allow the employer’s home state to claim withholding rights even when the employee works remotely, provided the arrangement exists for the employee’s personal convenience rather than as a documented business requirement. Arkansas, Connecticut, Delaware, Nebraska, and Pennsylvania have similar rules. If any of your people relocated to or from those states and continue working remotely, confirm whether the rule applies before assuming the standard work-location logic holds.
How can employers avoid tax mistakes with remote employees?
Verify actual work locations at hire and update them when employees move. Know which states require registration before withholding begins. Document reciprocity agreements and collect withholding certificates. Build a process for tracking where out-of-state employees actually work, especially those in roles that take them across state lines. Review your payroll setup regularly as the workforce grows. Working with a PEO or payroll compliance specialist reduces the risk of the kind of gradual errors that tend to surface only after they have grown expensive.
What are employer responsibilities for remote employee taxes?
Employers are responsible for withholding the correct state income tax based on where work is performed, registering with each applicable state agency before withholding begins, remitting taxes on schedule, and filing accurate multi-state payroll reports. None of that transfers to the employee because the work arrangement is remote.