Credit Union Merger Checklist: NCUA Package, Vote, and Integration

A credit union merger checklist runs across four fronts: board approvals and negotiated terms, financial and compliance due diligence, the NCUA merger package built around Form 6301, and member notice and voting — followed by regulatory sign-off and post-closing filings. The rules live primarily in 12 CFR Part 708b, and the NCUA’s checklist tells you exactly what to assemble.¹² What follows walks through each stage in the order you’ll actually need it.

Before You File: Board Decisions and Partner Selection

In a voluntary merger, the merging credit union’s board picks its partner. The NCUA does not match credit unions; it evaluates the resulting application.³ The NCUA maintains a Merger Partner Registry in CU Online that lets credit unions search candidates by asset size, geography, and field-of-membership type.⁴

Before opening negotiations, the board should define its non-negotiables: branch locations, staffing commitments, the credit union’s name, and service offerings it wants preserved. Setting those priorities before deadline pressure builds gives the board real leverage later.⁴ Vendor contracts should be reviewed early too, because heavy termination fees can eat into what the board can negotiate.

The NCUA advises against pursuing partners in weak financial condition — low net worth or poor supervisory ratings — because regulators are likely to reject the proposal.⁴ Early conversations between the two boards typically settle the fundamental questions that determine whether a deal can proceed: the continuing entity’s name, leadership structure, board composition, headquarters, charter type, and which core operating system the combined institution will run.⁵

Directors on both sides have fiduciary duties throughout: to act in good faith, in the best interests of members as a whole, and with the care of an ordinarily prudent person in a similar position. That includes evaluating all material aspects of the merger, including potential negative effects on members, and completing adequate due diligence before approving the plan.⁶

Due Diligence Checklist

The continuing credit union must complete a thorough review of the merging institution before the application goes in. Financial due diligence should cover, at minimum:

Current financial statements for both credit unions plus a consolidated statement projecting the combined position.
Net worth analysis for each credit union before the merger and the continuing credit union afterward. If the merging credit union’s net worth ratio exceeds the continuing credit union’s by more than 500 basis points, the application must explain the factors considered in setting any share adjustment, or why none is warranted.
A current delinquent loan summary for both institutions.
An analysis of whether the allowance for loan and lease losses is adequately funded at both credit unions.
A description of any merger-related compensation or benefit arrangements, with a certification that no undisclosed arrangements exist.
Asset/share ratio computations on NCUA Form 6311 for both credit unions.²

Under generally accepted accounting principles, the continuing credit union accounts for the merger using the acquisition method in ASC 805, which requires assets and liabilities to be measured at their acquisition-date fair values.⁷

Compliance and legal review should scope out the risks that surface after closing:

Consumer compliance history: prior examination findings, fair lending analysis, HMDA data validation, fee practices, and marketing reviewed for UDAAP risks.
BSA/AML: suspicious activity monitoring effectiveness, alert backlogs, SAR decision consistency, training documentation, and any reliance on manual processes.
Vendor and third-party risk: service agreements, data security, fintech relationships, and contract terms affected by the system conversion.
Data governance: loan documentation integrity, record retention, consumer privacy preferences, and audit trail quality.⁸

Underscoping this work is a common cause of budget overruns and problems during the first post-merger examination.

The NCUA Merger Package

The NCUA will not consider an application until it has a complete package assembled against the Form 6301 checklist.² Beyond the financial materials above, the package must include:

A detailed explanation of the merger rationale and the proposed effective date.
Board resolutions from both credit unions: Form 6302 from the continuing credit union and Form 6303 from the merging credit union.⁹
A draft merger agreement on Form 6304, with an executed, notarized version submitted after closing.
The proposed member notice (Form 6305A) and ballot (Form 6306A).
Copies of both fields of membership and information on member service locations.
Provisions for notifying and paying creditors.
An explanation of any changes to member insurance coverage — life savings, loan protection, and account insurance.
A Hart-Scott-Rodino statement if assets exceed FTC thresholds.
Evidence of state supervisory authority approval where a state-chartered credit union is involved.
Certification that no undisclosed merger-related financial arrangements exist.

All board minutes referencing the merger from the 24 months preceding the boards’ approval must be submitted to the NCUA.¹⁰ Post-merger filings include the Certification of Vote (Form 6308A) and the Certification of Completion of Merger (Form 6309).⁹

Field of Membership Compatibility

When the continuing credit union is federally chartered, its field of membership must be compatible with the merging credit union’s. The NCUA publishes a Field of Membership Compatibility Matrix organized by charter type — single common bond, multiple common bond, or community — that shows which combinations work and which require a charter conversion.¹¹

In some pairings the continuing credit union must convert its charter to absorb the merging institution’s membership. A single-common-bond credit union merging with a community-chartered institution, for example, may need to convert to a community charter unless the merging credit union’s boundaries fall within a grandfathered underserved area.¹¹ When the continuing credit union is state-chartered, NCUA field of membership rules generally do not apply, but the state supervisory authority’s requirements still govern.¹²

Hart-Scott-Rodino Filing

Larger transactions may require premerger notification to the Federal Trade Commission and the Department of Justice under the Hart-Scott-Rodino Antitrust Improvements Act. As of February 17, 2026, the minimum size-of-transaction threshold is $133.9 million. Transactions valued between $133.9 million and $535.5 million must also meet size-of-parties thresholds; transactions above $535.5 million are reportable regardless of the parties’ sizes. Filing fees start at $35,000 for transactions under $189.6 million.¹³ The transaction value determination for HSR purposes must be made within 60 calendar days before the premerger notification is filed.¹⁴

Member Notice and Vote

Voluntary mergers generally require a vote of the merging credit union’s members, and the notice and ballot process is strictly timed.

Notice Timing and Content

Members must receive written notice of the proposed merger at least 45 days, but no more than 90 days, before the meeting date for the vote.¹⁵ A copy of the notice and ballot must be emailed to the NCUA’s Office of Credit Union Resources and Expansion at least 15 days before it goes to members.¹⁰

The notice must include a summary of the merger plan with net worth comparisons, details on any share adjustments or distributions, anticipated changes to services such as ATM access and insurance coverage, and a description of all merger-related financial arrangements. Any material increase in compensation or benefits for covered persons — defined as the CEO, the four highest-compensated employees, and board or supervisory committee members — exceeding the greater of 15 percent of existing compensation or $10,000 must be disclosed by name, title, and dollar amount.¹⁵

The notice must also include a link to a credit union-specific web page where members can post comments and questions about the merger. The NCUA’s Office of Credit Union Resources and Expansion reviews submissions before posting and may decline to publish content that is false or misleading, relates to personal grievances, or is unrelated to the merger.¹⁰ Members may also submit comments directly to the NCUA within 30 days of receiving the notice.¹⁵

How the Vote Works

Approval requires an affirmative vote from a majority of members who cast a ballot. Voting can happen in person, by mail ballot, or electronically if bylaws allow. Only members as of the record date announced by the board are eligible.¹⁵ If the merger involves terminating or converting federal insurance, the vote must be conducted by secret ballot through an independent entity that receives, stores, and tabulates the ballots and certifies the results in writing to the credit union and the NCUA Regional Director.

The NCUA can waive the membership vote only if the merging credit union is in danger of insolvency and the merger would reduce risk or avoid losses to the National Credit Union Share Insurance Fund.³

NCUA Review and Decision

The NCUA evaluates a voluntary merger application against three primary criteria: whether the continuing credit union can safely absorb the financial and operational impact, whether the fields of membership are compatible, and whether the member notice adequately informed members of the proposed action.³ The regional director approves, defers, or denies the application. If the package is incomplete, the NCUA issues a deficiency letter identifying what’s missing.

For a credit union merging into a bank, the regional director must act within 30 calendar days of receiving the membership vote certification, though the period can be extended if more information is needed.¹⁶ For corporate credit union mergers, the NCUA conducts an on-site review once the application is complete and requires integration progress reports — weekly at first, then quarterly once key milestones are reached.¹⁴

State-Chartered Credit Union Approvals

If either credit union holds a state charter, add another layer. Prior approval from the appropriate state supervisory authority is required, and the merger must comply with state regulations. The NCUA recommends filing simultaneously with both the NCUA and the state regulator to avoid delays. Federally insured state-chartered credit unions must satisfy the NCUA’s merger rule and their state’s requirements for member notice and vote tallies.¹²

State forms and thresholds vary. California requires its own forms through the Department of Financial Protection and Innovation, including a Plan of Merger, a sample application, and certificates of merger for both the surviving and disappearing entities.¹⁷ Washington State requires the merging credit union’s management to contact the Division of Credit Unions at least five business days before the board votes on the merger plan, requires a two-thirds vote of the merging credit union’s board to approve the plan, and sets the member voting threshold at a two-thirds majority of members who vote.¹⁸

Share Insurance During the Transition

Members of the merging credit union keep separate NCUSIF coverage for at least six months after the merger date. Their accounts from the former institution are insured independently from any accounts they already hold at the continuing credit union during that window. Share certificates issued by the merged institution remain separately insured until the earliest maturity date that falls after the six-month grace period ends.¹⁹

Terms Worth Getting Into the Merger Agreement

The NCUA’s Truth in Mergers guidance identifies categories of protective terms that can be written into the merger agreement:

Operations and services: commitments to keep specific branches and ATMs, retain unique member services, and preserve or improve the overall service suite.
Staffing: retention agreements, salary and benefit continuity, seniority recognition, bonuses, severance, and contract buyouts.
Governance: board seats or committee positions for officials of the merging credit union.
Financial and brand: bonus dividends, interest rebates, or the right to retain the merging credit union’s name as a sub-brand.
Enforcement: naming stakeholders as third-party beneficiaries with standing to enforce contract provisions, since the merging credit union will cease to exist after closing. Language should be tailored to the applicable state’s contract law.
Specified durations: time-bound commitments, such as keeping a branch open for a minimum number of years.⁴

Financial strength shapes what a board can actually negotiate; weaker credit unions have less room to insist on these terms.

Post-Closing Integration and Final Filings

Once the merger is legally effective, the continuing credit union executes on the integration plan it disclosed to members before the vote.²⁰ One-time integration costs commonly include signage changes, temporary phone lines, brochure reprints, contract cancellations, system write-offs, moving expenses, and staff training.⁵

Technology conversion is often the most complex piece. Practical planning should cover the full ecosystem: core processing, digital banking, card services, and third-party vendor connectivity. Common problems include incompatible data formats between core systems, third-party applications without equivalent functionality on the partner’s platform, and fragmented reporting that has to be harmonized after closing. A cross-functional team spanning IT, operations, compliance, and member services should manage the migration, with high-priority items like signature cards and commercial loan documentation converted first.²¹

On the people side, HR should be involved from the earliest stages to develop communication plans and retention strategies. Some credit unions offer both a retention bonus for employees who stay and a severance package for those who leave, retaining departing staff for a transition period to help with the system conversion. Payroll and benefits should transition as soon as possible after the effective date.²²²³

To close out the regulatory file, the continuing credit union submits the executed, notarized Merger Agreement (Form 6304) and the Certification of Completion of Merger (Form 6309).⁹ Washington State separately requires final fair value adjustments and reports within three weeks of the effective date.¹⁸

1
eCFR. 12 CFR Part 708b – Mergers of Federally Insured Credit Unions; Voluntary Termination or Conversion of Insured Status
2
NCUA. Merger Package Checklist
3
NCUA. Information on NCUAs Merger and Purchase and Assumption Process
4
NCUA. Truth in Mergers
5
Doeren Mayhew. 8 Phases to Making Credit Union Mergers Successful
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Federal Register. Fiduciary Duties at Federal Credit Unions; Mergers and Conversions of Insured Credit Unions
7
Deloitte. Business Combinations
8
Doeren Mayhew. Compliance Due Diligence Gaps and Risk Misalignment in Credit Union Mergers
9
NCUA. Credit Union Merger and Acquisition
10
NCUA. Merger Rule Provisions Including Member-to-Member Communications Process
11
NCUA. Field of Membership Compatibility Matrix
12
NCUA. Credit Union Merger and Conversion Manual
13
Federal Trade Commission. New HSR Thresholds and Filing Fees for 2026
14
NCUA. Guidelines for Corporate Merger Application
15
eCFR. 12 CFR Part 708b
16
GovInfo. 12 CFR 708a.308
17
DFPI. Credit Unions
18
Washington State Department of Financial Institutions. Credit Unions Merger Manual
19
Greenville Federal Credit Union. NCUA Governance and Account Insurance
20
CU Management. Credit Union Mergers – Complete Guide to Member Voting and Strategic Success
21
CU Times. What Credit Unions Need to Know About Data Conversion During Mergers
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CreditUnions.com. How to Integrate Two Employee Teams After a Merger
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CU Management. Retaining Employees After a Merger