Alliant features three types of savings account, all with a 1.75% Annual Percentage Yield rate. Regular and Supplemental savings accounts are almost exactly the same, the only difference being customers can open up to 19 supplemental accounts. Kids accounts are restricted to children 12 and under and the $5 initial deposit for opening the account is paid for by Alliant. Interest is compounded daily and paid each month. Alliant also has a mobile app that makes it easy for members to manage their finances. The company does provide members with a card to withdraw funds from its network of over 60,000 ATMs, but it is limited and cannot be used as a regular debit card. Those seeking a regular credit card can open a checking account–which can be linked to savings online–and apply for the Alliant Visa Debit Card.

In order to qualify for Alliant's range of services, potential members must meet at least one of five requirements. These are being: a supporter of their partner charity, Foster Care to Success (FC2S), employees or retirees of qualifying companies, immediate family members of existing Alliant members, members of qualifying organizations, or residents or employees in qualifying communities. Alliant's cash withdrawal limit is $1,000 per day and transfer limits depend on whether the transfer is outbound or inbound. The company's savings account has no maximum balance. Both High-Rate and Supplemental accounts require a $5 deposit to open, and a balance of at least $100 must be maintained in order to accrue interest. As per Federal standards, savings account owners may not carry out more than six transactions per account, per monthly statement cycle. Doing so will result in Alliant charging a fee.