The Quota Law for the five-year period 2007-2011 establishes two Additional Provisions which fix the complementary financial flows which have an effect on the net payable quota.

In particular, the First Additional Provision states that the First Additional Provision laid down in the 37/97 Law, August 4, which approves the methodology for determining the Quota of the Basque Country for the five-year period 1997-2001, remains in force. In the latter, certain "financial compensations" were established to meet the neutrality principle which inspired the negotiation to agree on the Excise Duties in 1997. The compensation amount is calculated by applying to the expected revenue (in the provisional quota) or actual revenue (in the final quota) for each product taxed in the Excise Duty, the difference between the attribution rate (6.24%) and the estimated percentage of consumption for the Basque Country (7.13% for Alcohol and on Alcohol and Alcoholic Beverages, on Intermediate Products and Beer, 6.56% on Mineral Oils and 4.4% on Manufactured Tobacco)

In relation to a different issue, the Third Additional Provision states the application to the Basque Country of several regulations and agreements reached in three different fields: the implementation of the System for Personal Autonomy and Attention to Dependent Persons, the development of the Organic Law on Education, and the provisions agreed upon at the Conference of Presidents of 10 September 2005 for health care funding. All three cases involve additional financing funds to implement and develop the mentioned services, in ehich the Basque Country takes part proportionately to its attribution rate (6.24%)