Written by Lyle Kolosik, Compliance Manager, Financial Institutions Group

When credit unions decide to merge, most of the attention tends to go toward strategy, finances, member impact and operational fit. Those pieces matter—but one area that can cause the biggest headache is often the one that gets the least focus at the start: compliance. 

If compliance due diligence isn’t handled thoroughly or early enough, issues can pop up that slow down the merger, change the risk profile, add unexpected costs or trigger regulator concerns. Many of these problems aren’t dramatic on their own, but together they can create serious postmerger challenges. 

Below are some common trouble spots when it comes to compliance gaps and risk misalignment during credit union mergers. 

Treating Compliance as an Afterthought 

A lot of merger teams start by looking at things like financial performance, branch footprint and technology. Compliance usually joins the conversation later — sometimes too late. 

The problem is that compliance issues can directly affect whether the merger gets approved, how long integration takes and how much remediation work will be required once the deal closes. Bringing compliance in early helps uncover risks before plans are set in stone and avoids surprises late in the game. 

Not Digging Deep Enough Into Consumer Compliance 

Consumer compliance is one of the easiest areas to underestimate. On the surface, everything might look fine, but once you dig into exam history, disclosures, loan file reviews or complaint trends, you might find issues that could have longterm consequences. Common problem spots include: 

• Old exam findings never fully resolved.
• Gaps in disclosures or e-sign processes.
• Outdated fee practices or servicing methods.
• Weak fair lending analysis or Home Mortgage Disclosure Act (HMDA) data errors.
• Sloppy marketing reviews or unclear unfair, deceptive or abusive acts and practices (UDAAP) risks. 

These issues don’t magically go away after a merger. The surviving credit union inherits them—and regulators expect them to be fixed. 

Overlooking Bank Secrecy Act (BSA)/Anti-Money Laundering (AML) and Fraud Risks 

BSA/AML risk is often bigger than it looks at first glance. A credit union may appear compliant, but underneath the surface, there could be: 

• Backlogs in alert clearing.
• Weak suspicious activity monitoring.
• Inconsistent suspicious activity report (SAR) decisions.
• Poor training documentation.
• Outdated risk assessments.
• Far too many manual processes. 

Any of these can become a major issue after the merger closes. And since BSA/AML is a high-stakes area for regulators, missing these risks during due diligence can lead to scrutiny or corrective actions down the road. 

Differences in Risk Appetite and Governance 

Two credit unions might look compatible on a spreadsheet but still operate with completely different mindsets when it comes to compliance and risk. 

You might see differences in: 

• How much risk each credit union is comfortable taking.
• How fast they adopt new products or partnerships.
• How closely they follow policies or escalate issues.
• How the board views compliance roles and responsibilities. 

If these differences aren’t identified early, the merged organization may struggle with inconsistent decision-making, unclear expectations or tension between departments. Alignment doesn’t need to be perfect, but it does need to be intentional. 

Reviewing Vendor and Third Party Risks Thoroughly 

Merging credit unions means merging vendors, and this is where hidden risks live. It’s easy to assume most vendors operate the same way, but that’s rarely the case. 

Some things you might discover only after digging deeper: 

• Outdated service agreements.
• Vendors without strong data security practices.
• Partners who don’t meet current regulatory expectations.
• Fintech relationships that weren’t fully documented.
• Contract terms that complicate system conversions. 

Overlooking vendor issues can slow the merger timeline, lead to cost increases or raise red flags with regulators, especially around cybersecurity and data protection. 

Gaps in Records, Data Quality and Information Governance 

Data is at the center of almost every merger challenge. If the two credit unions don’t manage records, documentation and data in similar ways, that gap can become even more obvious during system integration. Common issues include: 

• Missing or inconsistent loan documents.
• Duplicate or outdated account data.
• Different retention schedules.
• Privacy preferences that aren’t tracked consistently.
• Unreliable metadata or poor audit trails. 

These might seem like technical problems, but they quickly turn into compliance problems. Fixing them after a merger is much harder than addressing them ahead of time. 

Accurately Estimating the Cost and Time Required for Fixes 

Even when compliance issues are identified, some credit unions underestimate how much work it will take to fix them. Policies, training, disclosures, system changes and vendor updates can multiply quickly after two organizations combine. 

If remediation isn’t properly scoped, it can lead to: 

• Strained budgets.
• Overworked compliance and operations teams.
• Delays in system conversions.
• More risks showing up during the first postmerger exam. 

Planning honestly for the workload helps everyone, from the board to front-line staff, understand what’s ahead. 

Here to Help 

Compliance due diligence is more than checking boxes. It’s about understanding what risks the combined credit union will carry into the future. When compliance teams have the time and support they need to dig deep, merger partners can uncover issues early, align their risk expectations and avoid surprises that could slow or derail the transition. 

When done right, thorough compliance due diligence creates a smoother merger, stronger governance and a healthier long-term foundation for the new credit union.  

If your credit union is contemplating a merger, rely on Doeren Mayhew’s credit union compliance pros to walk you through the due diligence process.