How we help you
Wipfli’s audit and assurance services bring experience in a variety of industries, delivering support that identifies risks, best practices and opportunities to strengthen your business’s operations and compliance.
Experience a streamlined audit process.
Turn findings into meaningful organizational improvements.
Get industry-aligned regulatory compliance support.
Build greater transparency and trust with stakeholders.
Assurance for stakeholders and you
Wipfli brings 95 years of experience in audit and assurance services to help you navigate your most complex audit challenges.
Explore our audit and assurance services
Wipfli takes a customized, risk-based approach to your review or audit, with procedures focused on the critical issues facing each individual client. Our diverse experience in a wide range of industries, financial know-how and business practicality allow us to use our client’s time and resources efficiently.
Get the most out of your internal audit. When you outsource or co-source your internal audit to Wipfli, you gain professionals who specialize in internal audits and bring a consultive mindset to working with you. We help you develop a strong internal audit plan, identify best practices, note inconsistencies and redundancies, and mitigate risk.
Wipfli has extensive experience providing audits for SOC 1, SOC 2 and SOC 3 using known frameworks. We can also help evaluate your preparedness against the Cloud Controls Matrix with a SOC 2+ audit.
When you need assurance beyond financial statements, Wipfli can provide third-party validation with agreed-upon procedures and other attest services. From contract compliance to director exams to SEC custody exams, we help remove doubt, offer validity and bring clarity and efficiency to the process.
With the increasing emphasis on transparency and accountability for federal funds, certain organizations may need to go beyond the financial statement audit. At Wipfli, our team of dedicated single audit professionals work with you to deliver a smooth single audit process.
Each year, Wipfli conducts over 700 employee benefit plan audits, with as few as 100 or as many as 50,000 participants and several billion dollars in assets. We understand the complexity of the requirements and can help you maintain compliance and adhere to your fiduciary responsibilities.
As a registered auditor with the Public Company Accounting Oversight Board, Wipfli provides PCAOB audits to SEC issuers and broker-dealers. We bring objectivity and practicality to every audit, helping you maintain your compliance.
Featured insights
EVENT | October 8, 2026
Nexus studies and voluntary disclosure agreements: How to manage multistate tax exposure
You could be exposed to state tax liabilities you don’t know about. State tax nexus can be triggered by a single remote employee, inventory stored in a third-party warehouse, or simply crossing an economic sales threshold. This webinar explores two of the most critical — and most frequently misunderstood — tools in multistate tax compliance: Nexus studies and voluntary disclosure agreements (VDAs).
EVENT | December 9, 2026
CFO Roundtable: Prepare your financial institution for 2027 and beyond
Staying compliant today requires looking ahead to the regulatory and reporting expectations of tomorrow. Join us from 12:30-2:00 pm CT on December 9 for the CFO Roundtable, a forward-looking learning opportunity for chief financial officers, chief risk officers and other accounting leaders. This two hour session will provide strategic clarity on key audit, accounting and tax developments to help your institution prepare for 2027 and beyond. Proactively preparing for change helps your institution maintain a competitive advantage. Join us for the context and practical guidance needed to lead your team with clarity and confidence. Save your seat today.
ARTICLE
What is a safe harbor 401(k), and can your business benefit from one?
Are you wondering how to set up a 401(k) retirement plan that better fits your small business? Have nondiscrimination testing and low employee participation restricted your ability to save contributions in your traditional 401(k)? Electing safe harbor status may be able to help small business owners and their highest-paid workers save more. Let’s explore what safe harbor means for 401(k) plans and how it can enhance your retirement savings strategy. What is a safe harbor 401(k)? Safe harbor 401(k) plans are a special type of 401(k) that can benefit small businesses. By waiving certain IRS compliance requirements, safe harbor 401(k) plans make it much easier for owners and highly compensated employees to maximize contributions to their 401(k) plan. This type of plan design offers significant advantages over a traditional 401(k), especially for middle-market or small businesses. While there are added benefits, there are also requirements associated with such plans to take into consideration. Understanding both will help ensure your business makes an educated choice in whether to implement a safe harbor 401(k) plan. The traditional 401(k) vs. the safe harbor 401(k) In many ways, the traditional 401(k) plan and a safe harbor 401(k) plan are similar. Both are types of 401(k) plans where employees can contribute dollars from their paycheck and choose from a list of investment options to help grow their retirement account. However, there are several key differences. First, safe harbor 401(k) plans are not subject to all of the same IRS nondiscrimination tests that standard 401(k) plans are. The actual deferral percentage (ADP) test, actual contribution percentage (ACP) test and top-heavy test are designed to help ensure owners or highly compensated employees (HCEs) are not receiving an unproportionally large benefit compared to non-highly compensated employees (NHCEs). When a company fails these tests, it must take corrective action, often by distributing excess contributions to the owners and HCEs (a taxable event) or by making a non-elective contribution to all NHCEs. Low contribution and participation rates from NHCEs can make it difficult to pass these tests and therefore directly limit how much owners or HCEs can save in a traditional 401(k). Electing safe harbor status allows companies to generally avoid these testing requirements, meaning owners and HCEs can save as much as they’d like (subject to the annual IRS contribution limits), without fear of receiving corrective distributions at the end of the year. This is especially beneficial for small businesses, which may not have a large number of NHCEs to offset the contributions of ownership. 401(k) type Traditional 401(k) Safe harbor 401(k) Investment options Choose from a list of investment options Choose from a list of investment options IRS nondiscrimination testing Subject to ADP, ACP and top-heavy tests Generally exempt from ADP, ACP and top-heavy tests HCE/owner contribution limits Restricted by NHCE participation and contribution rates Owners and HCEs can contribute up to the annual IRS maximum Corrective action risk Required if tests are failed (e.g., refunds to HCEs or employer contributions to NHCEs) Largely eliminated by meeting safe harbor requirements Mandatory employer contributions Not required Required annually (non-elective or matching) Vesting on employer contributions Employer may impose a vesting schedule Safe harbor contributions must be 100% immediately vested Best suited for Larger businesses with broad, active NHCE participation Small to mid-size businesses with limited NHCE participation Safe harbor contributions: A key requirement In exchange for this benefit, a company with a safe harbor 401(k) is required to make annual employer contributions to eligible employees. These mandatory safe harbor contributions must be fully vested immediately. This means an employee will never forfeit any safe harbor contributions upon separation, regardless of their years of service. (Note that you can still implement a vesting schedule on any employer contributions made in addition to the safe harbor employer contributions). The required employer contribution can come in one of two forms: Non-elective contribution All eligible employees must receive an employer contribution of at least 3% of their compensation, regardless of how much the employee saves from their own paycheck. If an eligible employee does not contribute at all, they are still entitled to the 3% employer contribution. Matching contribution This safe harbor option requires the company to provide an employer contribution only to eligible employees who elect to contribute to the plan through payroll deductions. These employee contributions are referred to as employee elective deferrals. There are three matching contribution types: Basic safe harbor match: This is an employer dollar-for-dollar matching contribution on elective deferrals on the first 3% of the employee’s compensation plus a 50% matching contribution on elective deferrals on the next 2% of employee’s compensation. Employee elective deferral Required employer match 0% 0% 1% 1% 2% 2% 3% 3% 4% 3.5% 5%+ 4% Enhanced safe harbor match: This employer matching safe harbor contribution is the simplest option. It’s a dollar-for-dollar match on elective deferrals of at least the first 4% of the employee’s compensation. This can be increased to a dollar-for-dollar match on elective deferrals up to a maximum of 6% of compensation. Employee elective deferral Required employer match 0% 0% 1% 1% 2% 2% 3% 3% 4% 4% Automatic safe harbor match: This safe harbor matching structure is unique in several ways. It provides for a dollar-for-dollar matching contribution on elective deferrals on the first 1% of compensation and a 50% matching contribution on elective deferrals on the next 5% of compensation. At the maximum elective deferral of 6%, it provides for a 3.5% matching contribution. This formula requires the employer to use an automatic enrollment feature, which automatically deducts a stated percentage (generally 3%) from an employee’s paycheck if an election is not made (without their consent — but with disclosure provided that allows them to opt out of the automatic payroll deduction). Additionally, this is the only safe harbor contribution option that allows for a vesting schedule of up to two years. Employee elective deferral Required employer match 0% 0% 1% 1% 2% 1.5% 3% 2% 4% 2.5% 5%+ 3% 6%+ 3.5% Benefits of safe harbor 401(k) plans While safe harbor 401(k) plans require mandatory employer contributions annually, they offer several advantages: Maximized savings: They help ensure owners and highly compensated employees can fully participate in the beneficial income tax and retirement savings strategies that make 401(k) plans so popular. Simplified administration: It greatly reduces administrative complexity and employer involvement through streamlined processes. Employee retention: The guaranteed employer contributions can be a powerful tool for attracting and retaining talent. Financial wellness: By encouraging participation and providing employer contributions, safe harbor plans can improve the overall financial wellness of employees. Tax benefits: Employers can deduct their contributions, and employees benefit from tax-deferred growth. Profit sharing: Safe harbor plans can be combined with profit-sharing features for additional flexibility. Is a safe harbor 401(k) right for your business? If you’re interested in learning more about safe harbor 401(k) plans or getting started with one, consider consulting with a third-party administrator or financial advisor . They can help you determine whether a safe harbor 401(k) plan is a good choice for you and your business, which contribution type may work best for your situation and how the safe harbor plan works in concert with your business and personal retirement goals. Remember, the right plan design can make a significant difference in your ability to save for retirement while providing valuable benefits to your employees. Whether you choose a traditional 401(k) or a safe harbor 401(k), the key is to start planning for your financial future today. 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