Direct Debit (DD) is a means of payments that allows an account holder to give permission to another entity (company, lender, etc.) to take money from their account according to a specified rule. 

A DD is similar to a debit card as both can be used to repay loans. Remita DD is a direct debit service from System Specs. Limited, a CBN licensed payments services provider.

The following are resources to provide further insights into DD in Nigeria