Changing the Liquidation Rate directly effects the earned profit element of the contract prices for completed items. Increasing the Liquidation Rate reduces the earned profit which is an increase to the cost of performance.
Example:
Upon delivery, inspection, and acceptance of an $1,000,000 item under 80% Liquidation Rate would result in a payment of $200,000; assuming the total Unliquidated Progress payments remaining against incomplete work at time of delivery were = to or > than $800,000.
Upon delivery, inspection, and acceptance of an $1,000,000 item under 90% Liquidation Rate would result in a payment of $100,000; assuming the total Unliquidated Progress payments remaining against incomplete work at time of delivery were = to or > than $900,000.
Changing the Liquidation Rate directly effects the earned profit of the item delivered. In the example above the 80% liquidation rate would have resulted in a payment of $200,000; at 90% the contractor would only receive a payment of $100,000. This is less than what the contractor agreed to at contract formation and directly affects the profit.
Increasing the Liquidation Rate effects the earned profit negatively and is why 52.232-16 Paragraph (c) limits the Contracting Officer to only increasing the rate after finding on substantial evidence one or more of the six conditions exists. However, decreasing the Liquidation Rate effects the earned profit positively. FAR 32.503-9 discusses decreasing the Liquidation Rate and exclaims the decrease is subject to a bilateral modification (FAR 32.503-9 (a)(8)).