W = Increase in funding requirement due to growth in access lines of recipient carriers. W equals the access line growth percentage for each recipient carrier multiplied by each recipient carriers' prior year net support (prior year funding minus prior year payment). The individual recipient carriers' required fund increases are totaled to yield W. W = ALG x (PYF-PYP).
X = Prior year's size of fund minus the estimated surplus from the prior year or plus any shortfall from the prior year.
Y = Surcharge for uncollectables is 1% times (X + W).
Z = Commission approved administrative and auditing expenses.
A = Aggregate Statewide end-user intrastate retail revenue of all contributing telecommunications providers for the previous calendar year.
B = Individual contributing telecommunications provider's end-user intra-state retail revenue for the prior calendar year.
C = Individual contributing telecommunications provider's monthly contribution.
52 Pa. Code § 63.165
This section cited in 52 Pa. Code § 63.162 (relating to definitions); 52 Pa. Code § 63.163 (relating to universal service fund administration); and 52 Pa. Code § 63.169 (relating to collection of universal service fund contributions).