Now that Tax Season is done and dusted for 2026 (or you’re firmly in corrections or extension season), now is a good time to take a look at what worked and what didn’t.

With a little reflection, you may have noticed a host of issues that made the process difficult. The truth is, tax season is hard for everyone – but it’s especially hard for staffing firms who deal with high-turnover employment, sometimes spread across multiple states.

But here’s the good news: tax season doesn’t need to be a year-end scramble. When you leave the majority of your tax work to the year’s end, you not only create more work for yourself in a short period of time, but you expose yourself to greater risk of errors; you also may catch errors within your tax prep process that have been snowballing over the course of the year, leaving you with penalties or outstanding payments due.

It’s no surprise that the IRS issues billions in payroll-related penalties each year; many of them stemming from missed or incorrect payments, misclassified workers, or simple human error.

For staffing, tax season is 365 days. By doing a little bit of work throughout the year – or partnering with a team who specializes in tax and payroll for staffing firms – you save yourself a lot of headache come April; and potentially save your company thousands (or millions!) in penalties.

Let’s take a look at five steps you can take throughout the year to make your tax process much easier come year-end.

Tip #1: Understanding the Complexities of Multi-State Employment

If you’re a staffing firm that’s fortunate enough to operate in multiple states, congratulations! Also, our condolences. If you’ve had the experience of navigating payroll and taxes for employees in multiple states, you know how complex it can get quickly.

While expansion into multiple states can be a positive sign of growth for your firm, it can also set you up for a number of compliance risks. According to Thomson-Reuters, the variance in multi-state tax code is the number one payroll pain point for businesses.

The differences from state to state can be drastic, and not understanding each individual state’s rules can expose your business to compliance risk throughout the year. Here are some factors that vary by state:

• Different income tax rates and rules
• SUTA (state unemployment tax) rates
• Filing frequences
• Varying local taxes (in some but not all jurisdictions)

For a full breakdown of (and a picture of how complicated) different state regulations are, check out this blog from legalclarity.org.

Understanding the legal expectations of each state you’re operating in is a major first step. For staffing firms, create a step-by-step checklist that tracks how taxes work in each state in which you’re employing workers, always register with that state’s governing body before placing workers, and use an ATS that reconciles your employees’ residence versus work location.

Nearly 60% of companies with multi-state employees have incurred penalties in recent years. By doing your due diligence, or enlisting the help of experts in multi-state payroll, you can start off on solid footing and hopefully avoid those costly penalties.

Tip #2: Start From a Steady Foundation (Setup is Better Than Cleanup)

It’s true that payroll administration across multiple states is complex, but processing taxes for single-state employees can be a struggle in itself. The key is getting employees set up properly from the start so that errors don’t cascade throughout the year.

When entering employees into your system, make sure that their work location is coded correctly and, perhaps most importantly, that they’re classified correctly.

One of the most significant errors within payroll is misclassifying workers, specifically distinguishing between employees and independent contractors. Businesses run into major issues when W2-eligible workers are filed as 1099 contractors. Employers shoulder far less tax burden for 1099-classified workers, so if they’re entered in a system wrong, once the government gets wind of the misclassification it can mean back taxes and penalties.

Misclassification is merely one piece of the setup puzzle.

Smaller configuration errors can also cause downstream compliance problems even when workers are classified correctly. Errors like:

• Incorrect local tax setup
• Missing unemployment insurance accounts
• Discrepancies in work vs. residence locations

These can all create inaccurate withholdings. And what’s worse, these errors repeat themselves every pay cycle.

It’s also important to remember that payroll tax penalties aren’t static, and escalate based on how long an issue goes unresolved. Even a short delay can trigger a 2% penalty if a deposit is just 1-5 days late. That number jumps to 5% within 6-15 days, and 10% after 16 days. If the issue persists after an IRS notice, penalties can climb as high as 15%, all adding up to thousands in unresolved penalties that can hit at once.

For staffing firms in particular, this risk is amplified by high volumes of employees in high-turnover roles, and compounded with workers across multiple states. Even a small percentage of setup errors can quickly scale into a significant compliance problem.

It pays to get it right from the start, so take the time and validate employee information when they’re entered into the system to avoid cascading issues.

Tip #3: Run Quarterly Data Integrity Checks (Stay Verified Throughout the Year)

The worst feeling is going to do your taxes at the end of the year and realizing there has been an unaddressed issue that’s been compounding for months. For staffing firms, that worst-case scenario can mean thousands (or millions!) in unaccounted for taxes that you don’t have the budget to cover.

Running quarterly data integrity checks can keep those issues on your radar year-round, catching them before they snowball.

These audits can help identify misalignment in employee address and work state as well as Social Security Number and tax ID, tax codes and withholdings, wage allocations across states, as well as reconcile payroll reports vs. tax filings.

Having a clear picture of your tax process throughout the year can identify issues early and remedy them before they threaten your business. Payroll teams spend around 29 weeks correcting errors every year; finding problems can save major time in the long run.

Tip #4: Keep Regulatory Changes on Your Radar

Tax codes not only vary from state to state, but they’re also constantly evolving. Being aware of upcoming changes can help your organization plan accordingly.

Each year, states roll out new programs that affect taxes; wage rate changes, different unemployment regulations, and paid family leave legislation. Even simple changes to the tax code can have broader implications to your payroll process.

Subscribing to tax updates and compliance alerts, or partnering with a payroll and tax provider whose job it is to stay up-to-date on changes can be a huge benefit in the long run.

Tip #5: Document Everything

The first four tips here are designed to defend you against something going wrong. But, in the case that something does go wrong, you may face an audit. The best defense against that worst-case scenario is having robust documentation.

Maintaining records for employee classification decisions, work location, SSN and tax ID info, filing confirmations, and any other pertinent information can help make your case in an audit.

What’s more, having a centralized database for all employee information – particularly one that connects your front and back office – can help a lot in staying organized. These systems can keep audit-ready information at your fingertips year-round and can also create a traceable system to understand who made what changes and when.

Tax Season is 365 Days Long

The firms that sail smoothly through tax season are the ones that lay the groundwork month by month, quarter by quarter.

Doing your due diligence and ensuring compliance throughout the year can save staffing firms countless hours and dollars when April comes around.

And, as always, firms can trust their taxes to professionals – like Lone Oak Payroll – who specialize in payroll and taxes tailored to the needs of staffing agencies. Investing in a payroll and tax partner is the safest way to ensure a hassle-free tax season!