To get more information or to enroll in EFTPS, visit the EFTPS website at www.eftps.gov or call 1-800-555-4477 (24 hours a day, 7 days a week).If you make your payment using EFTPS, do not include the payment voucher.
DDA stands for demand deposit account. It is a bank account in  which you can deposit and withdraw money. A form of a demand  deposit account is a checking account.
The abbreviation DBA stands for doing business as.. It represents the selection of a fictitious or assumed name that a sole proprietor or a partnership uses for conducting business. The term DBA has come to be used as a noun over time, so the selected name itself is often referred to as a DBA.