(a) General rule.--Until the association makes a common expense assessment, the declarant shall pay all the expenses of the condominium. After any assessment has been made by the association, assessments shall be made at least annually and shall be based on a budget adopted at least annually by the association. The budgets of the association shall segregate limited common expenses from general common expenses if and to the extent appropriate.

(b) Allocation and interest.--Except for assessments under subsection (c), common expenses shall be assessed against all the units in accordance with the common expense liability allocated to each unit (section 3208) in the case of general common expenses and in accordance with subsection (c) in the case of special allocations of expenses. Any past due assessment or installment thereof shall bear interest at the rate established by the association not exceeding 15% per year.

(c) Special allocations of expenses.--Except as provided by the declaration:

(d) Reallocation.--If common expense liabilities are reallocated, common expense assessments and any installment thereof not yet due shall be recalculated in accordance with the reallocated common expense liabilities.