Prosper Rewards ATM Locator

Earn up to 1.05% APY with S3 Checking Prime. One of the best checking accounts in the nation!


S3 Checking Prime is the only account your need to save money, spend smart, and simplify your finances. As one of the preeminent checking accounts in the nation, S3 Checking Prime features a competitive rate, nationwide access, and an unbeatable rewards program.    


0.50%  APY* for balances under $25,000 $0.00 Monthly Service Fee No Activity Requirements
1.05% APY* for balances over $25,000 $0.00 Direct Deposit Requirement 1 Prosper Point per $2 spent**


S3 Checking Prime FeaturesMcGraw-Hill FCU Apple Pay with S3 Checking Prime

  • No monthly service fees
  • No activity requirement
  • No direct deposit requirement
  • Exclusive SVisa debit card with EMV chip technology
  • CardNav App by CO-OP for real-time control of when, where, and how your debit card is used
  • Access to 85,000+ no-surcharge ATMs
  • Nationwide Shared Branching network access
  • Mobile Banking with Mobile Check Deposit
  • Prosper Rewards redeemable for travel, merchandise, and cash - 1 Prosper Points per $2 spent**
  • Apple Pay contactless payment capabilities


The Competition Just Doesn't Compare



  • We've been around since 1935, so we know a thing or two about giving members the best checking account.
  • We're member owned and operated, so we're focused on your best interest and financial well-being.
  • We believe in Corporate Social Responsibility. In 2007, the VOICE Foundation was established—a  501(c)(3) non-profit organization that promotes and manages the credit union's charitable and financial education activities. Learn more about our community outreach >>


Open Your S3 Checking Prime Today

 Call us at 833-823-2426        Apply Online        Visit a Location

*APY=Annual Percentage Yield. Rates are subject to change without notice. Fees may reduce earnings. To earn the stated rate, your S3 Checking Prime account must have a minimum balance of $25,000 at the end of each statement cycle. Accounts with  $100.00 - $24,999.99 earn 0.50% APY. Account balance may not exceed $1,030,000.00. Initial deposit requires new money that has not been on deposit with MHFCU for more than 30 business days. Other terms and conditions may apply. Your savings are federally insured to at least $250,000 and backed by the full faith and credit of the United States Government NCUA, National Credit Union Administration, a U.S. Government Agency.
**Prosper Points are earned by selecting the "Credit" option during checkout. No Prosper Points are earned for transactions using a Personal Identification Number (PIN).
***Competitor annual percentage yields are taken from their respective websites, and are valid as of 07/26/2017 at 3:45 p.m. EST. Competitor rates are subject to change at any time. Comparison rates are based on competitor's respective interest checking offering and a balance of at least $25,000. 
View short and sweet S3 Checking Prime terms and conditions >>

Questions? Ask McClever.

  • 1-800-226-6428 |
  • Routing Number: 226077943 |
  • NMLS# 407684
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