Walmart, the nation’s largest retailer, is teaming up with Green Dot, known for its prepaid payment cards, to supply checking accounts to almost anyone over 18 who passes an ID check.

Daniel Eckert, senior vice president at Walmart, said on Tuesday that the accounts would be available nationwide by the end of October. The accounts are intended to be low-cost alternatives to traditional bank checking accounts, with no fees for overdrafts or bounced checks and no minimum account balance.

In comparison, a basic checking account at Citibank charges $12 if a check is returned and $34 for overdrafts.

The new accounts from Green Dot, called GoBank, will cost $8.95 a month if they have direct deposits totaling less than $500 a month. Mr. Eckert said that most people on Social Security or fixed pensions would qualify.