What's the difference between partial goodwill and full goodwill in business combinations?

This is one of the most testable IFRS/GAAP differences in the CFA Level II Financial Reporting curriculum. Let me walk through both methods.

Setup: Kensington Holdings acquires 80% of Waverly Technologies for $320 million. The fair value of Waverly's identifiable net assets is $350 million. The fair value of the 20% noncontrolling interest (NCI) is $78 million.

Full Goodwill Method (Required under US GAAP, optional under IFRS):

Goodwill = (Purchase price + Fair value of NCI) - Fair value of net assets

Goodwill = ($320M + $78M) - $350M = $48 million

NCI on balance sheet = $78M (at fair value)

Partial Goodwill Method (IFRS option only):

Goodwill = Purchase price - (Investor's share x Fair value of net assets)

Goodwill = $320M - (80% x $350M) = $320M - $280M = $40 million

NCI on balance sheet = 20% x $350M = $70M (proportionate share of net assets, no goodwill attributed to NCI)

Comparison:

Why it matters for ratios:

• Full goodwill produces higher total assets → lower ROA
• Full goodwill produces a higher NCI → same total equity but different composition
• The choice affects debt/asset ratios and return metrics in cross-border comparisons

Exam tip: If a vignette says the company elected to measure NCI at 'proportionate share of net identifiable assets,' that signals partial goodwill. If it gives you a separate fair value for the NCI, it's hinting at full goodwill.

Practice both methods side by side with our CFA Level II consolidation exercises on AcadiFi.