Under Part II of Schedule 8 to the Local Government Finance Act 1988 billing authorities in Wales are required to pay amounts (called non-domestic rating contributions) to the National Assembly for Wales and rules for the calculation of those contributions are contained in the Non-Domestic Rating Contributions (Wales) Regulations 1992.

These Regulations amend those rules by substituting a new formula in paragraph 4(1) of Schedule 1 (deductions from gross amount), a new multiplier in paragraph 2(12) of Schedule 2 (assumptions as to gross amount) and a new Schedule 4 (adult population figures).