Self Asessment Tax
I have setup a tax for US with the following rules
1) Determine Place of Supply --> Ship to, use bill to if ship to is not found
2) Determine Tax Applicability --> Applicable
3) Determine Tax Registration--> Ship to
4) Determine Tax Status --> Default from Tax status
5) Determine Tax Rate--> Default from Tax Rate
6) Determine Taxable Basis--> STANDARD_TB
7) Calculate Tax Amounts --> STANDARD_TC
Also for the first part legal establishment i created a tax registration for my Tax regime where in i enabled the tax regime assoicated with the above tax and also enabled set for self assessment flag to yes.