Understanding ASU 2023-09 Income Tax Disclosures & Materiality Thresholds
In December 2023, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2023-09, titled Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This represents the most substantial revision to corporate tax footnotes in decades, aimed at providing investors with enhanced transparency regarding where a multinational company pays taxes and how its statutory rate reconciles to its effective rate.
The 5% Materiality Threshold Formula
The centerpiece of ASU 2023-09 is a highly specific, quantitative materiality threshold. Public entities must individually disaggregate any reconciling item in their rate reconciliation if its absolute value is equal to or greater than 5 percent of the computed statutory tax.
The math behind this calculation is:
For example, if a corporation has $50 million in pre-tax income and a 21% federal statutory rate:
- Computed Statutory Tax is $10,500,000 ($50M × 21%).
- The 5% Materiality Threshold is $525,000 ($10,500,000 × 5%).
- Any specific state tax jurisdiction, foreign tax rate differential, or individual tax credit that equals or exceeds $525,000 in impact must be listed separately.
Core Categories for Disaggregation
ASU 2023-09 mandates that reconciling items be categorized into eight designated categories:
- State and local income taxes: Net of federal income tax effect.
- Foreign tax rate differentials: Disaggregated by individual country if the impact meets the 5% threshold.
- Effect of changes in tax laws or rates: Enacted in the current period.
- Effect of cross-border tax laws: E.g., GILTI, BEAT, Subpart F.
- Tax credits: Distinctly listing major credit initiatives like R&D, energy, etc.
- Valuation allowances: Changes in tax assets recoverability.
- Nontaxable or nondeductible items: E.g., permanent differences.
- Other items: Any other residual reconciling categories.
Transition Dates and Compliance Preparation
The standard is effective for annual periods beginning after December 15, 2024 for public business entities (meaning calendar year 2025 reports filed in early 2026). For private companies, it applies to annual periods beginning after December 15, 2025.
Early adoption is permitted. Tax directors and controllers should utilize tools like this calculator to model historical reconciliations and identify which jurisdictions will require standalone general ledger account tracking and audit support.