Accelerated Depreciation and DTLs, Explained

The question

A manufacturing company reports $100M of pre-tax book income. Its tax depreciation exceeds book depreciation by $40M. The statutory tax rate is 25%. Compute the deferred tax liability increase for the year. Explain why this DTL does not represent a near-term cash outflow for the company.

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Study explanation

The increase in the deferred tax liability is the temporary difference multiplied by the tax rate: $40M × 25% = $10M. This DTL arises because the company paid $10M less in cash taxes today than the book tax expense; it will be paid in future periods when the asset becomes fully depreciated for tax while book depreciation continues.

For a growing company that consistently invests in new PP&E, new originating differences can exceed reversing differences, causing the DTL balance to grow or remain stable, effectively acting as a permanent, interest-free source of financing. It is not a current payable, and the exact timing of reversal may be years away.

Follow-up pressure:

  • If the tax rate were to decrease to 21% next year, how would the existing DTL balance be adjusted? Walk me through the income statement impact.
  • Suppose the company's capital expenditures slow dramatically and it stops acquiring new assets. Walk me through what happens to the DTL balance over the following three years.
  • Would a valuation allowance ever be recorded against a DTL? Why or why not?

Income statement

Revenue1,000
COGS(600)
Gross profit400
SG&A(180)
EBITDA220
D&A(40)
EBIT180
Interest expense(20)
Pre-tax income160
Taxes(40)
Net income120
Illustrative figures

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Depreciation, write-downs and the tax shield

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