Walmart Has Not Banned Cash

Misbar’s investigation finds that the claims do not represent the truth. Yes, Walmart has advised its customers to use cards in making payments if they can, but that has nothing to do with the retail chain store going cashless.
A Walmart spokesperson told NPR,  "Like most retailers, we're experiencing the [effects] of the nationwide coin shortage," "We're asking customers to pay with card or use correct change when possible if they need to pay with cash. Cash is welcome at all of our stores."
According to Inc., Walmart is taking steps to encourage customers to pay for their purchases to do so with credit and debit cards instead of cash.
The Federal Reserve states on its website Business and bank closures associated with the COVID-19 pandemic have significantly disrupted the supply chain and normal circulation patterns for U.S. coins. While there is an adequate overall amount of coins in the economy, the slowed pace of circulation has reduced available inventories in some areas of the country.

This isn’t the first time the nationwide coin shortage has sparked an unfounded claim on social media.  Walmart has only advised its customers to pay with their cards if possible due to the nationwide coin shortage. They have not made the decision to go cashless.