Bank By Mail

Opening an account at Marathon Bank is easier than ever. Customers applying for a new account can complete and print a new account application and mail it in with their opening deposit to: Marathon Bank, Attn: New Accounts, P.O. Box 1666, Wausau, WI 54402-1666. To expedite opening your new account, call one of our New Accounts Representatives at (844) 864-7330 for assistance, during our business hours Monday through Friday 9:00 am to 5:00 pm Central Standard Time (excluding holidays).

Bank by Mail - Certificate of Deposit

  • Minimum opening deposit of $10,000
  • Interest compounded quarterly

FDIC Certificate Number: 29745

Apply for a New Account

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Brokered Deposits Not Accepted.

Please call (844) 864-7330 to speak with a New Accounts Representative to learn more about an account.

Bank by Mail - Certificate of Deposit (CD): $10,000 Minimum balance to open. There will be a penalty for early withdrawal. Rates subject to change at any time before account is opened.

For your security, do not use email to initiate financial transactions or send sensitive or private information, such as your account numbers, passwords or your social security numbers.

Important information: To help the government fight the funding of terrorism and money laundering activities, Federal law requires all financial institutions to obtain, verify, and record information that identifies each person who opens an account. The information you provide during this application process will assist us in verifying your identity. However, we may contact you to provide additional information or documents for identity verification purposes. If our verification efforts cannot confirm any part of your identification information, a New Accounts Representative will contact you by telephone or by mail in an attempt to clarify the inaccurate information with you.