Assessed contributions are expenses of the United Nations that Member States are obligated to finance under Article 17, paragraph 2, of the United Nations Charter:
The expenses of the Organization shall be borne by the Members as apportioned by the General Assembly.
Both the regular budget and the peacekeeping budgets are financed through assessed contributions. Assessed contributions are apportioned amongst Member States on the basis of the scales of assessments for the regular and peacekeeping budgets.
Requirements not financed under assessed contributions (i.e. those funded through voluntary contributions) are considered extrabudgetary resources.
- Repertory of Practice: Article 17(2) (from Office of Legal Affairs website)