Baron Payroll vs ADP vs Gusto: Which Is Best for Managing ITIN Worker Payroll?

If your business employs workers with Individual Taxpayer Identification Numbers (ITINs) instead of Social Security Numbers (SSNs), choosing the right payroll provider can be more challenging than you might expect.

Many employers are surprised when their payroll provider tells them they can't add an employee with an ITIN to payroll. In many cases, that isn't because of the law—it's because of the payroll software they use.

So how do three of the most popular payroll providers compare?

In this guide, we'll compare Baron Payroll, ADP, and Gusto specifically for businesses that need to process payroll for W-2 employees with ITINs.

Baron Payroll vs ADP vs Gusto at a Glance

Can Employees with ITINs Be Paid as W-2 Employees?

One of the biggest misconceptions among employers is that workers with ITINs cannot be placed on payroll.

In reality, the issue is often not the law—it's the payroll provider.

Some payroll systems are designed around traditional employee onboarding workflows and may not support certain ITIN payroll scenarios. That leads many employers to believe their only option is to classify workers differently or leave them off payroll altogether.

If your workers should be W-2 employees, your payroll provider should be able to support that process—not force you into a workaround that could create additional compliance concerns.

Why Baron Payroll Is the Best Choice for ITIN Worker Payroll

If your biggest payroll challenge is managing W-2 employees who have ITINs instead of Social Security Numbers, Baron Payroll is uniquely positioned to help.

Unlike many payroll companies that simply say "our software doesn't allow it," we've built our service around solving this exact problem.

Baron Payroll helps employers:

• Process payroll for eligible W-2 employees with ITINs
• Issue W-2s
• Provide Spanish-language employee self-service
• Offer payroll-linked payment solutions and direct deposit options
• Deliver dedicated implementation and ongoing customer support

Many of our clients come to us after another payroll provider told them their ITIN workers couldn't be added to payroll.

Often, the limitation isn't the employee.

It's the software.

When Baron Payroll Is the Right Choice

Baron Payroll is an excellent fit if:

• Your workforce includes employees with ITINs
• Another payroll provider has told you "no"
• You want a payroll company experienced with ITIN worker payroll
• You value dedicated support instead of a call center
• Compliance is one of your top priorities

If ITIN payroll is your primary concern, Baron Payroll is built specifically for that use case.

When Gusto Makes Sense

Gusto is one of the most popular payroll platforms for small businesses.

It may be the right choice if:

• Your workforce consists primarily of traditional W-2 and 1099 employees
• You want a modern, easy-to-use payroll interface
• You value integrated payroll, HR, and benefits
• ITIN worker payroll is not your primary concern

For many small businesses, Gusto is an excellent payroll platform. However, businesses with a significant ITIN workforce should carefully evaluate whether it meets their specific needs before making a decision.

When ADP May Be the Better Option

ADP is one of the largest payroll providers in the country and offers a comprehensive payroll and HR platform.

ADP may be a good fit if you:

• Operate in multiple states
• Have more complex payroll requirements
• Need advanced HR functionality
• Expect significant business growth

If your employees include workers with ITINs, it's important to discuss your exact payroll situation before signing a contract so you understand how your workforce will be supported.

Compliance Still Matters

Choosing the right payroll provider is only one piece of the puzzle.

Processing payroll for an employee with an ITIN is not the same as determining whether someone is legally authorized to work in the United States.

Employers remain responsible for:

• Completing Form I-9
• Maintaining required employment records
• Following federal and state labor laws
• Verifying work authorization where required

A payroll provider processes payroll—it does not replace your legal compliance responsibilities.

Our Recommendation

If your business has a traditional workforce with standard payroll needs, both ADP and Gusto are strong payroll solutions.

But if your biggest challenge is processing payroll for eligible W-2 employees with ITINs, Baron Payroll stands apart.

Instead of telling employers what can't be done, we help businesses understand what can be done and provide a payroll solution built around those needs.

That's why so many employers switch to Baron Payroll after being told their ITIN workers couldn't be added to payroll elsewhere.

Frequently Asked Questions

Can employees with an ITIN receive a W-2?

Yes. In the appropriate circumstances, employees with an ITIN may receive a W-2. Employers should ensure they meet all applicable federal and state employment requirements, including Form I-9 obligations.

Why do some payroll companies say they can't add ITIN workers?

Often, the limitation is the payroll software or the provider's internal policies—not necessarily the law. Some payroll platforms are designed around standard onboarding workflows and may not support every ITIN payroll scenario.

Is Baron Payroll only for businesses with ITIN workers?

No. Baron Payroll provides payroll, HR, time and attendance, workers' compensation integration, and compliance support for businesses of all types. However, we have developed particular expertise in helping employers who need to process payroll for W-2 employees with ITINs.

Get Your Instant Price

If another payroll provider has told you they can't process payroll for your ITIN workers, we'd be happy to show you another option.

Use Baron Payroll's Instant Price Calculator to get transparent pricing in minutes—no sales call required.