How does the amortisation of excess under the equity method affect the investor's reported net income?

Amortisation of the equity-method excess does reduce the investor's reported net income. It is NOT a balance-sheet-only adjustment. The amortisation flows through "Equity in earnings of affiliates" (or whatever the investor labels its equity-method income line).

Income-statement walk-through:

For our running example (Lucia owns 20% of William, $60K excess on PP&E amortised over 10 years, William has $100K NI):

Lucia's income statement shows:

The "$14,000" is your share of William's NI ($20K) less your amortisation of excess ($6K).

Why this matters for ratio analysis:

Lucia's reported NI is reduced by the $6K amortisation. This means:

• ROE is slightly lower than it would be without amortisation
• ROA is slightly lower (and the investment carrying value is on the balance sheet at a lower amount too)
• Net profit margin is slightly lower

Across all the equity-method investments a company holds, this drag can be material. For investors like Berkshire Hathaway with many equity-method positions, the aggregate amortisation drag can be tens of millions per year.

Disclosure:

The amortisation IS embedded in the "Equity in earnings of affiliates" line. It is NOT separately disclosed unless material — in which case the footnote breaks out:

• Investor's share of investee net income
• Less: amortisation of excess
• = Equity income reported

This footnote disclosure is the ONLY way an external analyst can back out the amortisation drag.

Effect on cash flow statement:

Equity income (net of amortisation) is non-cash. In the operating cash flow section, the investor adds back equity income and SUBTRACTS dividends received separately:

Net Income
+ Depreciation
+ Amortisation
− Equity in earnings of affiliates (the $14K)
+ Dividends received from affiliates (the $3K share)
= ...other adjustments...
= Operating cash flow

This treatment means the investor's operating cash flow reflects ONLY the dividends actually received, not the share of investee earnings.

Pitfall — cash flow adjustment:

Many candidates incorrectly add back the $14K equity income AND add the $3K dividends. The correct adjustment is: subtract $14K (because it's non-cash income) and add $3K (because it's cash received).

Tax implications:

The amortisation of excess is generally NOT tax-deductible. The IRS taxes Lucia on dividends received from William (subject to the dividends-received deduction), not on Lucia's share of William's earnings. So a permanent book-tax difference exists, contributing to the deferred-tax accounting in the footnote.

This book-tax difference is typically deferred-tax-liability (DTL) when the carrying value > tax basis of investment — exactly what happens when the investor records share of NI exceeding dividends received.

Bottom line:

Amortisation of excess is real expense for income-statement purposes. It reduces reported NI, ROE, and ROA. Always remember to apply it in equity-method roll-forwards.