Top 5 Mistakes to Avoid When Switching from a PEO to HRIS

PEO to HRIS transition guide: 5 mistakes to avoid when leaving a PEO. Get your complete PEO exit checklist for switching from PEO services successfully.

Brett Ungashick
OutSail HRIS Advisor
June 24, 2025

Making the decision to leave a Professional Employer Organization (PEO) and transition to an in-house Human Resources Information System (HRIS) is a significant milestone for any growing business.

While this move often signals organizational maturity and can lead to greater control over HR functions and potential cost savings, the PEO to HRIS transition process is fraught with potential pitfalls that can cause serious disruption to your operations.

The risk of disruption during PEO exit is real and substantial.

Companies that fail to plan properly often find themselves scrambling to maintain compliance, struggling with employee confusion, and facing unexpected costs that can exceed their PEO fees for months.

However, with proper planning and awareness of common mistakes, you can ensure a smooth transition that positions your company for long-term success.

In this comprehensive guide, we'll explore the five most critical mistakes companies make when switching from PEO services to their own HRIS solution, and provide actionable strategies to avoid them.

Mistake #1: Not Giving Yourself Enough Time – The 6-Month Rule

Perhaps the most common and costly mistake companies make when leaving a PEO is underestimating the time required for a successful transition.

Many business leaders assume that switching from a PEO to HRIS is a simple matter of selecting new software and transferring data.

In reality, a proper PEO exit requires a minimum of six months of careful planning and execution.

Why Six Months?

The six-month timeline isn't arbitrary – it reflects the complex web of tasks that must be completed before you can successfully operate independently:

Months 1-2: Assessment and Planning

During this phase, you'll need to conduct a thorough assessment of all services currently provided by your PEO.

This includes not just the obvious HR functions, but also:

  • Workers' compensation coverage and claims management
  • State tax registrations and filings
  • Employee handbook and policy administration
  • Compliance management across multiple jurisdictions
  • Benefits administration and carrier relationships
  • Payroll processing and tax remittances

Months 3-4: Vendor Selection and Setup

This period involves researching and selecting your new HRIS platform, benefits broker, payroll provider, and other necessary vendors.

Each selection process requires:

  • Detailed requirements gathering
  • Vendor demonstrations and evaluations
  • Contract negotiations
  • Implementation planning
  • Data migration strategies

Months 5-6: Implementation and Transition

The final phase includes:

  • System configuration and testing
  • Employee data migration
  • Benefits enrollment and carrier transitions
  • Employee communications and training
  • Parallel processing to ensure accuracy
  • Final PEO exit procedures

The Consequences of Rushing

Companies that attempt to compress this timeline often face severe consequences.

Rushed transitions frequently result in:

  • Missed payroll deadlines
  • Lapsed workers' compensation coverage
  • Non-compliance with state regulations
  • Employee benefits disruptions
  • Tax filing errors and penalties

Remember, most PEOs require 30-90 days notice for termination, and some have specific renewal dates that, if missed, can lock you into another full year of service.

Factor these contractual obligations into your timeline from the very beginning.

Mistake #2: Not Preparing for the Administrative Workload Tsunami

When operating under a PEO model, it's easy to forget just how much administrative work is being handled behind the scenes.

The second major mistake companies make is failing to prepare for the dramatic increase in administrative responsibilities that comes with managing HR independently.

The Hidden Workload

Leaving a PEO means your team will suddenly become responsible for dozens of tasks that were previously invisible. These include:

State Registrations and Compliance

If you have employees in multiple states, you'll need to:

  • Register as an employer in each state
  • Obtain state unemployment insurance accounts
  • Set up state income tax withholding accounts
  • Register for any applicable local taxes
  • Understand and comply with each state's unique employment laws

Each state has different requirements, forms, and timelines.

What seems like a simple registration process can quickly become a complex project requiring specialized knowledge.

Employee Handbook and Policy Management

Your PEO likely provided a comprehensive employee handbook that covered multi-state compliance.

Now you'll need to:

  • Create or update your employee handbook
  • Ensure policies comply with federal, state, and local laws
  • Implement a system for policy updates and acknowledgments
  • Train managers on policy enforcement
  • Establish procedures for policy violations

Re-onboarding Requirements

One often overlooked aspect of the PEO to HRIS transition is the need to re-onboard all employees.

This includes:

  • Collecting new W-4 forms for tax withholding
  • Gathering I-9 documentation (even for existing employees)
  • Updating direct deposit information
  • Distributing new employee handbooks
  • Collecting benefits enrollment forms
  • Ensuring all employee data is accurately transferred

Building Administrative Capacity

To handle this increased workload successfully, companies must:

Assess Current Resources

Honestly evaluate whether your current HR team has the bandwidth and expertise to handle these additional responsibilities.

Many companies find they need to hire additional HR staff or outsource certain functions.

Create Detailed Checklists

Develop comprehensive checklists for each administrative area.

Your PEO exit checklist should include every task, responsible party, deadline, and dependency.

Implement Project Management

Treat your transition as a formal project with:

  • Defined milestones and deadlines
  • Regular status meetings
  • Risk identification and mitigation plans
  • Clear accountability structures

Consider Phased Approaches

Some companies find success in phasing their transition, perhaps starting with payroll and HRIS while temporarily maintaining PEO benefits administration, then completing the full transition in stages.

Mistake #3: Not Selecting an HRIS That Truly Fits Your Needs

The excitement of leaving a PEO can lead companies to rush into selecting an HRIS platform without fully understanding their requirements.

This mistake can haunt organizations for years, as the wrong HRIS choice can limit growth, increase costs, and frustrate employees.

Understanding Your True Requirements

Before evaluating any HRIS after PEO options, conduct a thorough needs assessment:

Current State Analysis

Document all HR processes currently handled by your PEO, including:

  • Payroll processing frequency and complexity
  • Benefits administration requirements
  • Time and attendance tracking needs
  • Performance management processes
  • Recruiting and onboarding workflows
  • Reporting and analytics requirements

Future State Planning

Consider not just your immediate needs but where your organization will be in 3-5 years:

  • Projected headcount growth
  • Geographic expansion plans
  • Complexity of compensation structures
  • International employee considerations
  • Integration requirements with other systems

Common HRIS Selection Pitfalls

Over-buying on Features

Some companies, eager to embrace their newfound independence after leaving a PEO or upgrading from manual processes, end up purchasing HRIS platforms loaded with every possible feature.

While it may seem like a comprehensive solution, this approach often leads to unnecessary complexity, hindering user adoption and significantly increasing costs.

It’s important to prioritize only those features that directly support and align with your current workflows and operational needs.

By focusing on must-have functionalities rather than a wide array of options, companies can simplify implementation and boost user satisfaction.

Under-investing in Integration

A common mistake is underestimating the importance of integration.

Your HRIS should connect effortlessly with key systems such as accounting or ERP platforms, benefits carriers, time tracking systems, background check providers, and other third-party services.

Failing to invest in strong integration capabilities can result in isolated data silos and time-consuming manual workarounds.

These inefficiencies ultimately undermine the productivity gains that are often the main reason for adopting a new HRIS in the first place.

Ignoring User Experience

Another frequent pitfall is overlooking the user experience.

An HRIS isn’t only used by HR administrators—it also needs to be accessible and intuitive for managers, employees, and sometimes even candidates and contractors.

Each user group has different levels of technical skill and distinct needs.

If the system is too complex or unfriendly, adoption rates will suffer across all levels.

Therefore, choosing an HRIS that balances functionality with ease of use is critical for successful company-wide implementation.

Making the Right Choice

To select the right HRIS for your needs:

  • Involve Key Stakeholders Include representatives from HR, IT, Finance, and line management in the selection process. Each brings valuable perspectives on requirements and constraints.
  • Conduct Thorough Demonstrations Go beyond vendor-led demos. Ask to see your specific use cases demonstrated, real-time processing examples, error handling and exception processing, actual reports and analytics, and mobile experiences.
  • Check References Carefully When checking references, ask specifically about implementation experiences, ongoing support quality, hidden costs or surprises, scalability challenges, and integration experiences.
  • Consider Total Cost of Ownership Look beyond subscription fees to include implementation costs, training requirements, ongoing maintenance, integration expenses, and potential customization needs.

Mistake #4: Not Finding a Benefits Broker Experienced with PEO Exits

Benefits disruption represents one of the highest risks during a PEO transition.

Employees who lose coverage or face dramatic plan changes can quickly lose confidence in the transition.

The fourth critical mistake is partnering with a benefits broker who lacks specific experience with PEO exits.

Why PEO Exit Experience Matters

Transitioning benefits from a PEO arrangement involves unique challenges that general benefits brokers may not anticipate:

Master Policy Complications

Under a PEO, your employees are typically covered under the PEO's master policies.

Extracting your group and establishing independent coverage requires:

  • Careful timing to avoid coverage gaps
  • Understanding of carrier requirements for new groups
  • Knowledge of state continuation requirements
  • Experience with composite vs. age-banded rating transitions

COBRA and State Continuation

The question of who handles COBRA for pre-transition claims and qualifying events can be complex.

An experienced broker will:

  • Clarify COBRA responsibilities
  • Ensure proper notifications
  • Coordinate hand-offs between administrators
  • Address state-specific continuation requirements

Claims History and Experience Rating

Your claims experience under the PEO impacts your rates as an independent group.

A knowledgeable broker can:

  • Obtain necessary claims data from the PEO
  • Work with carriers to establish appropriate rates
  • Identify potential cost-saving opportunities
  • Negotiate based on your specific demographics

Selecting the Right Benefits Partner

When evaluating benefits brokers for your transition:

Ask Specific Questions

  • How many PEO exits have you managed?
  • What challenges typically arise during benefits transitions?
  • How do you ensure no coverage gaps?
  • What's your timeline for benefits implementation?
  • Can you provide references from similar transitions?

Evaluate Their Process

An experienced broker should present a detailed transition plan including:

  • Timeline aligned with your PEO exit
  • Carrier negotiation strategy
  • Employee communication plans
  • Enrollment methodology
  • Ongoing service model

Consider Technology Capabilities

Modern benefits administration requires strong technology.

Ensure your broker offers:

  • Benefits administration platforms
  • Integration with your chosen HRIS
  • Employee self-service capabilities
  • Decision support tools
  • Mobile accessibility

Managing the Benefits Transition

Even with the support of an experienced broker, a successful benefits transition requires strategic planning and foresight.

Early Carrier Engagement

It’s critical to begin conversations with benefits carriers at least 120 days before your planned transition.

This advance notice provides ample time for important steps such as underwriting processes, rate negotiations, plan design modifications, and overall implementation planning.

Early engagement ensures smoother coordination and helps avoid rushed decisions that could negatively impact coverage or costs.

Employee Communication Strategy

Developing a clear and proactive communication plan is essential to a smooth transition.

This strategy should include early and transparent announcements about any benefits changes, with an emphasis on enhancements or maintenance of comparable offerings.

Employees should be given multiple opportunities to learn about their new benefits through webinars, in-person sessions, or written materials.

For those with more complex needs, offering one-on-one support can be invaluable.

Proactively addressing common concerns helps build trust and ensures employees feel supported throughout the transition.

Contingency Planning

It's also important to be prepared for unexpected issues that may arise.

For instance, you should have a plan in place if a carrier declines coverage or if you encounter complications managing ongoing claims.

Consider how you'll handle specialty benefits such as dental, vision, or supplemental insurance, and anticipate how you'll manage and respond to employee expectations.

Having contingency strategies in place will make your transition process more resilient and less stressful for everyone involved.

Mistake #5: Not Capturing a Total Cost Picture – The Hidden Financial Reality

One of the most financially damaging missteps companies make when transitioning away from Professional Employer Organization (PEO) services is neglecting to gain a complete understanding of their current expenses versus the true costs of operating independently.

Without a clear and comprehensive cost analysis, organizations can face unforeseen budget shortfalls, stakeholder dissatisfaction, and even reconsideration of their decision to leave the PEO structure.

Understanding Your True PEO Costs

PEO pricing is often layered and not always transparent, making it essential to delve into both direct and indirect expenses.

  • Direct PEO fees typically include administrative charges—often calculated as a percentage of payroll or on a per-employee basis—along with benefits administration costs, workers' compensation premiums, technology platform fees, and charges for any additional services.
  • Beyond these, indirect costs can quietly accumulate. These may include inflated rates for employee benefits, additional premiums tacked onto workers' compensation policies, limited flexibility in choosing providers, and an inability to tailor services to the company’s unique needs. These limitations can also result in missed opportunities for negotiating directly with carriers.
  • It’s also important to consider the hidden value components that PEOs offer—services that must be replicated post-transition. These include HR guidance and consultation, regulatory compliance management, enhanced buying power for benefits, integrated technology platforms, and various risk mitigation services.

Calculating Independent Operation Costs

When building a financial model for operating independently, a detailed breakdown of new expenses is critical.

Technology costs may include HRIS licensing fees, system implementation and integration costs, ongoing technical support, and the potential need for additional software solutions such as applicant tracking systems (ATS) and performance management platforms.

Human resources expenses may rise with the need to hire additional HR personnel, secure outsourced services, pay for legal consultations, provide staff training, and recruit for new HR roles.

Meanwhile, administrative costs such as broker fees, payroll processing, background checks, drug screening programs, and compliance consulting can add up.

Don’t forget state registration fees that may apply when managing HR functions internally.

On the risk management front, you must budget for expenses like workers' compensation premiums, employment practices liability insurance (EPLI), cyber liability protection, errors and omissions coverage, and legal reserves to address potential employment disputes.

Creating a Realistic Comparison

To fully grasp the financial implications of going independent, develop a three-year cost model.

In Year 1, include all one-time transition costs along with standard operational expenses.

Year 2 should reflect a stabilization period, while Year 3 should illustrate the financial benefits of a fully optimized HR infrastructure.

Be sure to include all transition-related costs, such as project management resources, employee time spent on transition activities, consultant fees, overlapping vendor contracts during transition ("double-running"), and any dips in productivity.

These are often the hidden expenses that can derail budgets if unaccounted for.

Also, factor in soft costs and benefits.

These may include the impact of the change on employee satisfaction, time investment by managers, and the benefits of increased flexibility, better cultural alignment, and enhanced strategic capabilities—elements that might not be immediately quantifiable but are crucial to long-term success.

Your model should also account for variables such as business growth rates, healthcare and benefits cost inflation, regulatory changes, technology refresh cycles, and different staffing models.

This scenario-based planning helps ensure that financial projections are robust and adaptable.

Making the Financial Decision

A well-constructed financial analysis often reveals that while Year 1 costs may surpass what companies paid under a PEO due to initial investments, Years 2 and 3 typically yield 15-30% cost savings.

Understanding your break-even point is key to evaluating whether the transition is financially viable in the long term.

Clear insight into investment requirements—including upfront cash needs and ongoing expenditures—can support internal budget approvals, aid in managing cash flow, and align stakeholder expectations.

Additionally, incorporating a thoughtful risk analysis will help identify and quantify potential pitfalls such as compliance penalties, disruptions in benefits delivery, system implementation issues, and short-term productivity losses.

Putting It All Together: Your Roadmap to Success

Successfully transitioning from a PEO to an independent HRIS requires careful orchestration of all these elements.

By avoiding these five critical mistakes, you can ensure a smooth transition that delivers the control, flexibility, and cost savings that motivated your decision to leave the PEO.

Remember, the key to success lies in:

  • Starting early with a minimum six-month timeline
  • Preparing thoroughly for increased administrative responsibilities
  • Selecting technology that truly fits your needs
  • Partnering with experienced benefits professionals
  • Understanding all financial implications

The journey from PEO to HRIS independence is challenging but ultimately rewarding for organizations ready to take control of their HR destiny.

With proper planning and the right partners, you can navigate this transition successfully and emerge stronger on the other side.

Take the Next Step with Confidence

If you're considering leaving a PEO or have already made the decision to transition to an independent HRIS, you don't have to navigate this complex process alone.

A comprehensive PEO exit audit can help you identify potential challenges, develop realistic timelines, and create a roadmap for success.

Get Your Free PEO Exit Audit today and gain the insights you need to make your transition smooth, successful, and disruption-free.

Experts at Outsail understand the complexities of leaving a PEO and can help you avoid these common mistakes while maximizing the benefits of HR independence.

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Meet the Author

Brett Ungashick
OutSail HRIS Advisor
Brett Ungashick, the friendly face behind OutSail, started his career at LinkedIn, selling HR software. This experience sparked an idea, leading him to create OutSail in 2018. Based in Denver, OutSail simplifies the HR software selection process, and Brett's hands-on approach has already helped over 1,000 companies, including SalesLoft, Hudl and DoorDash. He's a go-to guy for all things HR Tech, supporting companies in every industry and across 20+ countries. When he's not demystifying HR tech, you'll find Brett enjoying a round of golf or skiing down Colorado's slopes, always happy to chat about work or play.

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