Grant the following permission to all profiles that you want to be able to create new companies.
From Setup, click Manage Users | Profiles then choose the profile.
Scroll down to the Record Type Settings section.
Click Edit next to the Companies record type.
Add the "VAT", "GST", "Combined" and "SUT" record types to the Selected Record Types list.
Set "SUT" as the default record type.
Click Save.
View All Data Permission
Do not grant the View All Data permission on any profile that you want to use to enter, retrieve or modify FinancialForce Accounting data in a multi-company environment.