How to Handle Multi-State Payroll Taxes for Construction

Multi-state payroll taxes for contractors get complicated fast. Win a job one state over, and suddenly you’re juggling a second set of withholding rules, registration deadlines and overtime laws — on top of everything your back office already handles.

States set their own payroll tax, withholding and wage-and-hour rules, and those requirements don’t always line up across state lines. Miss one, and you could face penalties, back taxes or crew members who were taxed twice on the same paycheck.

The good news? Out-of-state work doesn’t have to be a headache.

Here’s what to watch for, the mistakes contractors make most often and how to keep payroll compliant wherever your crews go.

Key takeaways

• Each state sets its own withholding, registration and overtime rules — and those rules change
• Register with a state’s tax agency before you run payroll for work there
• Reciprocity agreements let some workers pay income tax only to their home state, as long as you collect the right form
• Unemployment insurance usually goes to one state per employee, even when they work in several
• A construction-specific payroll service can help with multi-state tax setup, withholding and filing

Why Multi-State Payroll Taxes Get Complicated

It’s common for contractors to have crews working in two to four states on the same payroll. Winning those jobs is good for business, but tax regulations can vary from state to state — and every new state brings its own rulebook.

Those rules aren’t written in stone, either. Tax rates, withholding thresholds and reciprocity agreements can change from year to year, so what worked on your last out-of-state job may not apply to the next one.

Here are a few rules that can differ from state to state:

• Income tax withholding. Nine states don’t tax wages at all, while others require withholding from an employee’s first day of work there
• Local taxes. Some cities, counties and school districts — common in states like Ohio and Pennsylvania — add their own payroll taxes on top of state tax
• Payroll deductions. States can differ on what employers may deduct from wages and what employee authorization is required
• Recordkeeping. Federal law requires you to keep payroll records for at least three years, and some states require longer
• Wage and overtime laws. Some states set higher minimum wages or stricter overtime rules than federal law

Getting it wrong can be expensive. Depending on the jurisdiction and violation, employers may face back taxes, interest and penalties.

Common Multi-State Payroll Tax Mistakes to Avoid

Even experienced contractors run into trouble with multi-state payroll.

These are the mistakes that come up most often — and how to steer clear of them.

Applying the Wrong State’s Tax Rules

One of the most common multi-state payroll mistakes is withholding for the wrong state. As a general rule, states tax:

• Nonresidents on income they earn while working in that state
• Residents on all of their income, no matter where they earned it

So a crew member who lives in one state and works in another may owe tax to both. Reciprocity agreements, minimum-day thresholds and other exceptions can change who you withhold for.

Get it wrong, and you could under-withhold, over-withhold or face penalties from state revenue departments. Always confirm the rules for every state where your crews work.

Skipping State Tax Registration

Before you can withhold and pay state income tax, your business needs to register with the tax agency in each state where employees work. Most states also require a separate unemployment insurance account.

It’s easy to start a job before this step is done, but late registration can lead to back taxes, interest and fines. Since requirements and timelines vary, start the process when you win the bid — not when the crew shows up.

Overlooking Reciprocity Agreements

Some neighboring states have reciprocity agreements that let employees pay income tax only to the state where they live. About 16 states and Washington, D.C., have at least one of these agreements.

Reciprocity isn’t automatic, though. Employees usually need to give you a certificate of nonresidence or exemption form. If you don’t collect it, you’ll withhold for both states — and your crew will feel it in every paycheck.

Agreements can also change or end. When that happens, you and your workers may suddenly owe tax in more than one state, so review them at the start of each year.

Missing State Overtime and Wage Rules

Federal law requires overtime at time-and-a-half after 40 hours in a workweek. Some states go further, including daily overtime limits.

California, for example, requires overtime after eight hours in a single workday and double time after 12.

Apply one overtime rule across every state, and you risk underpaying crews and facing wage claims down the road.

On prevailing wage jobs, rates and fringes can change from project to project, too. That’s one more reason accurate certified payroll reporting matters when you work in multiple states.

How to Avoid Double Taxation

Double taxation happens when an employee pays income tax twice on the same wages — once to the state where they worked and once to the state where they live. Preventing it starts with your timecards.

What you can do as the employer:

• Assign every hour to the correct job and state on each timecard
• Keep employee home addresses up to date
• Collect reciprocity forms from eligible employees

What your employees will do at tax time:

1. File a nonresident return in the state where they worked, reporting only the income earned there
2. File a resident return in their home state, reporting all of their income
3. Claim a credit on their resident return for tax paid to the other state

In most cases, that credit means they only pay tax once on the same income. Encourage crew members to check their pay stubs so they can flag errors early.

Unemployment Insurance: Pay One State, Not Several

Contractors sometimes assume they need to pay state unemployment insurance (SUTA, also called SUI) to every state where their crews work. In most cases, an employee’s wages are assigned to one state for unemployment insurance purposes.

Most states use the same four-part test, based on U.S. Department of Labor guidance, to decide which state that is. Work through these questions in order and stop at the first “yes.”

1. Is the work localized in one state? Work is localized when it’s done entirely in one state, or when any out-of-state work is temporary. If so, pay that state.
2. Is there a base of operations? Look for the place where the employee reports, gets instructions or picks up equipment and supplies. Pay the state where that base is.
3. Is there a place of direction or control? If there’s no base of operations, pay the state the work is directed or controlled from.
4. Where does the employee live? If none of the above apply, pay the state where the employee lives, as long as they do some of the work there.

Example: A Florida-based employee spends a few months on a job in Georgia, then returns to their regular work in Florida. Because the Georgia job was temporary, the work is still localized in Florida — so you pay unemployment insurance to Florida only.

Unemployment rules can get tricky, so it’s smart to talk to a construction payroll expert or your legal advisor before you decide.

Multi-State Payroll Tax Compliance Best Practices

Most multi-state payroll problems start before the first paycheck. A little prep up front saves a lot of cleanup at tax time.

• Research the state’s payroll tax requirements when you win the job. Confirm withholding rules, registration requirements, local taxes, filing deadlines and any quarterly or annual reporting requirements before work starts.
• Register early. Set up state withholding and unemployment accounts before your first payroll there.
• Track time by job and state. Detailed timecards with cost codes, trades and hours by job show exactly where every hour was worked. WorkMax®, a mobile time tracking app, captures field hours and job locations in real-time.
• Keep employee records current. Up-to-date home addresses are key for residency and reciprocity.
• Review reports before you run payroll. Construction payroll reports help you catch mistakes before they turn into tax problems.
• Check for regulatory changes regularly. Tax rates, withholding rules, reciprocity agreements and wage laws can change during the year, so don’t assume the rules you started the job with will remain the same.

That’s a lot to keep on top of — especially when you’re also handling certified payroll, union reporting and everything else on payday. A construction payroll service can help.

How Payroll4Construction Helps You With Multi-State Payroll

When you work across state lines, you don’t have to go it alone. Construction-specific CPAs and legal advisors can guide your tax strategy, and a construction payroll service can assist.

Payroll4Construction has helped contractors with complex construction payroll since 2006 and now processes payroll in all 50 states.

Instead of tracking every state’s rules on your own, Payroll4Construction helps you:

• Process multiple states, rates and trades on a single timecard
• Automatically calculate pay for different rates, trades, jobs and jurisdictions
• File federal, state and local payroll taxes electronically
• Deliver paychecks, direct deposits and W-2s
• Connect with QuickBooks®, Sage, FOUNDATION® and more

Your back office gets time back every pay period, and you can bid on out-of-state jobs without worrying about the payroll that comes with them. State lines shouldn’t limit where your business grows.

Ready to simplify multi-state payroll? To learn more about how Payroll4Construction can help, talk to an expert today.