U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
As prescribed in 816.203-4(e)(1), insert the following clause:
(a) To the extent that contract cost increases are provided for by this economic price adjustment clause, the Contractor warrants that the prices in this contract for the base period and any option periods do not include any amount to protect against such contingent cost increases.
(b) The Base and Adjusting Indexes, for the purpose of price adjustment under this clause, shall be ______,
(1) The Base Index, for the purposes of price adjustment under this clause, shall be the most recent Index published prior to the date for receipt of offers, or the due date for receipt of best and final offers if discussions were held whichever is later. The Base Index shall remain constant for the entire term of the contract, including all option periods.
(2) The Adjusting Index shall be the most recent Index published prior to the date of contract adjustment, as specified in paragraph (d) of this clause.
(c) The percentage difference between the Base Index and the Adjusting Index, rounded to the nearest .01 percent (e.g., 4.57%), will be used in calculating all adjustments to the following line items: ______.
(d) The dates of contract adjustment shall be ______
(e) An example of an adjustment calculation is provided herein for informational purposes only.
(1) The original contract price or line item prices for that contract term (e.g., base year) shall be used for all calculations during that particular contract term and new calculations shall be made for each and every contract adjustment period specified in paragraph (d) during that contract term.
(2) For purposes of this example, the contract prices for the line items as specified in paragraph (c) will be adjusted by the percentage calculated as follows:
Adjusting Index for the current period | 196.6 |
Minus the Base Index | −188.0 |
Equals the Index Point Change | 8.6 |
Index Point Change Divided by the Base Index | 8.6/188.0 = .0457 * |
Result Multiplied by 100 Equals the Percentage Change | 4.57% |
(The Index Point Change Percentage) |
* This figure shall be rounded to the fourth decimal place. When the fifth decimal is 1 to 4, the figure shall be rounded down, 5 to 9, rounded up.
(3) For a line item with an original bid price of $25.00 and a 4.57 percent Index Point Change increase as of the first contract adjustment period, as shown above, the calculations for a new contract price for the first contract adjustment period would be as follows: $25.00 × .0457 = $1.14, $25 + $1.14 = $26.14 **. The new contract price for this line item from the beginning of that first contract adjustment period until the start of the next contract adjustment period would be $26.14 and the Contracting Officer would issue a contract modification reflecting this price change. ** The unit price adjustment shall be rounded up or down, as in paragraph (e)(1) of this clause, to match the number of decimal places in the original bid.
(4) If the Adjusting Index went down for the second adjustment period, reflecting only a 3 percent Index Point Change increase over the Base Index, the new price for this sample line item would be reduced for the second contract adjustment period from $26.14 to $25.75 as follows: $25 × .03 = $0.75, $25 + $0.75 = $25.75. Note that the calculations for the second contract adjustment period are based on the original contract price for that contract term of $25.00. The contract price for this line item is modified to reflect this new price for the second contract adjustment period.
(5) At the start of the first option year and each subsequent option year period (as well as for each contract adjustment period specified in paragraph (d) during that option year, if different), the Contracting Officer shall recalculate the contract or unit prices for that first option year based on any changes between the Adjusting Index and the Base Index, from the original contract award date to the start of the first option period, and based on the Contractor's new option year prices. Assume the Contractor's bid price for the first option year for the above sample line item was $25.50 and the calculations shown in paragraph (e)(1) of this clause at the start of the first option period reflected a 6 percent Index Point Change. The new contract price for this sample line item at the start of the first option period would be calculated as follows: $25.50 × .06 = $1.53, $25.50 + $1.53 = $27.03. The Contracting Officer would process a contract modification reflecting a revised contract price of $27.03 for the first contract adjustment period in the first option year.
(f) Price adjustments pursuant to this clause, shall be documented by a contract modification issued by the Contracting Officer, show the Base Index (see paragraph (b)(1)), the Adjusting Index, the adjusted contract prices (see paragraph (c)), the mathematical calculations used to arrive at the adjusted contract prices, and the effective date of the adjustment (see paragraph (d)).
(g) At the start of each option year, the Contracting Officer shall, within 5 days of the start of the option year period, process a contract modification adjusting the option year prices by the then current Index Point Change percentage, if any, reflecting the new adjusted prices for that first contract adjustment period in that option year.
(h) In the event that ______
(i) Any dispute arising under this clause shall be resolved subject to the “Disputes” clause of the contract.