It depends. What kind of business entity did you set up? Like a sole proprietor or Single Member LLC, Partnership, Corp. etc. Unless you are a SMLLC S corp or need to file a separate Business return you file it as self employment income in your personal 1040 return on schedule C. So you would not need to set up a separate account.
You can enter Self Employment Income into Online Deluxe but if you have any expenses you will have to upgrade to Premium version. Or use any of the Desktop CD/Download programs. You can buy the Desktop CD or the Download program here,
https://turbotax.intuit.com/personal-taxes/cd-download
How to enter income from Self Employment
https://ttlc.intuit.com/community/self-employed/help/how-do-i-report-income-from-self-employment/00/...
Where to enter business expenses
https://ttlc.intuit.com/community/entering-importing/help/where-do-i-enter-my-self-employment-busine...
