Rules in this part are applicable to competitive products.

(a) When the Postal Service determines to change a rate or rates of general applicability, it shall file notice of the change with the Commission no later than the date of publication of the decision in the Federal Register concerning such change, but at least 30 days before the effective date of the change.

(b) The notice filed with the Commission shall include an explanation and justification for the change, the effective date, and a schedule of the changed rates.

(a) When the Postal Service determines to change a rate or rates of general applicability for any competitive product that results in a decrease in the average rate of that product, it shall file notice of the change with the Commission no later than the date of publication of the decision in the Federal Register concerning such change, but at least 30 days before the effective date of the change.

(b) The notice filed with the Commission shall include an explanation and justification for the change, the effective date, and a schedule of the changed rates.

(c) In addition to the notice, the Postal Service shall file with the Commission:

(1) Sufficient revenue and cost data for the 12-month period following the effective date of the rate to demonstrate that each affected competitive product will be in compliance with 39 U.S.C. 3633(a)(2); and

(2) A certified statement by a representative of the Postal Service attesting to the accuracy of the data submitted, and explaining why, following the change, competitive products in total will be in compliance with 39 U.S.C. 3633(a)(1) and (3).

(a) In the case of a change in class of general applicability, the Postal Service shall file notice of the change with the Commission no later than the date of publication of the decision in the Federal Register, but at least 30 days before the effective date of the increase.

(b) The notice filed with the Commission shall include an explanation and justification for the change, the effective date, and the record of proceedings regarding such decision.

(a) When the Postal Service determines to add or change a rate or class not of general applicability, it shall file notice of its decision with the Commission at least 15 days before the effective date of the change.

(b) The notice filed with the Commission shall include an explanation and justification for the change, the effective date, the rate and class decision, and the record of proceedings regarding such decision.

(c) In addition to the notice, the Postal Service shall file with the Commission:

(1) Sufficient revenue and cost data for the 12-month period following the effective date of the rate or class to demonstrate that each affected competitive product will be in compliance with 39 U.S.C. 3633(a)(2); and

(2) A certified statement by a representative of the Postal Service attesting to the accuracy of the data submitted, and explaining why, following the change, competitive products in total will be in compliance with 39 U.S.C. 3633(a)(1) and (3).

If, after review of the information submitted pursuant to this part, the Commission determines additional information is necessary to enable it to evaluate whether competitive products will be in compliance with 39 U.S.C. 3633(a), it may, in its discretion, require the Postal Service to provide additional information as deemed necessary.

For purposes of determining competitive products' compliance with 39 U.S.C. 3633,the. To the extent that incremental cost data are unavailable, the Commission will use the sum of competitive products' volume-variable costs and product-specific costs supplemented to include causally related, group-specific costs to test for cross-subsidies.

(b) Each competitive product must recover its attributable costs as defined in 39 U.S.C. 3631(b). Pursuant to 39 U.S.C. 3631(b), the Commission will calculate a competitive product's attributable costs as the sum of its volume-variable costs, product-specific costs, and those inframarginal costs calculated as part of a competitive product's incremental costs.

(c)(1) Annually, on a fiscal year basis, the appropriate share of institutional costs to be recovered from competitive products collectively, at a minimum, will be calculated using the following formula:

(2) The Commission shall, as part of each Annual Compliance Determination, calculate and report competitive products' appropriate share for the upcoming fiscal year using the formula set forth in paragraph (c)(1) of this section.