Taxable-income and tax-expense signals
Enter taxable and book income plus tax expense and pretax income to inspect ratios and an assumed long-short spread.

The idea · in two minutes

How do taxable-to-book income and effective tax rate sit alongside a return scenario?

Tax signals include taxable income relative to book income, tax-expense changes, effective tax rates and book-tax differences. Lev and Nissim study the predictive content of taxable/book income; Thomas and Zhang examine tax-expense momentum. Rates also reflect one-off items, international operations, deferred taxes and rules, so they are not a single quality label.

Enter taxable and book income plus tax expense and pretax income to inspect ratios and an assumed long-short spread.

A high taxable/book ratio or tax change is not automatically positive; definitions and tax rules require period-by-period review.

• Signal metricEnter taxable and book income plus tax expense and pretax income to inspect ratios and an assumed long-short spread.
• Assumed return spreadA high taxable/book ratio or tax change is not automatically positive; definitions and tax rules require period-by-period review.

Illustrative research examples only. They are not live signals or a recommendation.

The mechanics · payoff and exposure

Tax/Book=\frac{TaxableIncome}{BookIncome},\quad ETR=\frac{TaxExpense}{PretaxIncome}

TaxableIncome is estimated taxable income; BookIncome accounting income; ETR effective tax rate.

Greeks: the directional intuition

估算誤差

Measures sensitivity to implied volatility.

一次性項目

Measures sensitivity to implied volatility.

制度變動

Measures sensitivity to implied volatility.

Tax/Book=\frac{TaxableIncome}{BookIncome},\quad ETR=\frac{TaxExpense}{PretaxIncome}

Practical context · published observations

Taxable-income and tax-expense signals: read the record with its caveats.

The chart uses the published figures or explicitly labelled study inputs below. A historical index or model replay is not the same as an investor’s realised account return.

A high taxable/book ratio or tax change is not automatically positive; definitions and tax rules require period-by-period review. Source ↗ · Methodology ↗