What are measurement period adjustments in acquisition accounting?

The measurement period is a window after an acquisition during which the acquirer can refine the provisional fair values assigned to the assets acquired and liabilities assumed. Both IFRS 3 and ASC 805 permit this, recognizing that fair value estimates at the acquisition date may be incomplete.

Key Rules:

1. Duration: Maximum of one year from the acquisition date
2. Purpose: To obtain additional information about facts and circumstances that existed at the acquisition date
3. What can be adjusted: Fair values of identifiable assets, liabilities, and consequently goodwill
4. What cannot be adjusted: Information about events that occurred after the acquisition date

Example:

Silverpoint Holdings acquires Fenwick Technologies on March 1, 2026. At acquisition, Silverpoint provisionally values a patent at $3,000,000 because an independent valuation was not yet complete. Goodwill is initially calculated as $8,000,000.

In August 2026, the independent appraisal comes back at $4,500,000 for the patent — $1,500,000 higher than the provisional amount.

Measurement period adjustment:

• Increase patent value by $1,500,000
• Decrease goodwill by $1,500,000
• Restate comparative information as if the revised values had been used from the acquisition date

Critically: The additional depreciation/amortization that would have been recorded from March through August on the revised patent value must also be recognized. If the patent has a 15-year life, the incremental amortization for 6 months = $1,500,000 / 15 / 2 = $50,000.

Financial statement presentation:

Under current standards, measurement period adjustments are recognized retrospectively — as if the adjustment had been made at the acquisition date. Prior period comparative statements are restated. This differs from previous guidance that treated some adjustments prospectively.

What is NOT a measurement period adjustment:

• A change in the fair value of an acquired asset due to market movements after the acquisition (post-acquisition event — recognize in current period P&L)
• An error in the original calculation (error correction, not measurement period)
• New information about conditions that arose after the acquisition date

Exam tip: CFA Level II may present a scenario where an acquirer obtains new information and ask whether it qualifies as a measurement period adjustment. The key test: does the information relate to facts that existed at the acquisition date? If yes, adjust goodwill. If no, recognize in current earnings.

For more on business combinations, explore our CFA Level II course on AcadiFi.