Effective Tax Rate (Historical)
Returns the effective tax rate, which measures the actual percentage of pre-tax income paid in taxes. This often differs from statutory rates due to deductions, credits, and tax planning.
Understanding the Metric
Effective tax rate is calculated as:
Effective Tax Rate = (Tax Expense / Pre-Tax Income) * 100This metric shows:
- Actual tax burden (vs. statutory rate)
- Tax efficiency and planning effectiveness
- Geographic income mix impact
Parameters
| Parameter | Description |
|---|---|
| Symbol | Stock ticker (e.g., AAPL, MSFT) |
| Year | Fiscal year or period code (lq, ly, lq-1, ly-1, lt, lt-1) |
| Quarter | Optional: 1, 2, 3, or 4 (default: 1) |
| TTM | Optional: "TTM" for trailing twelve months |
Reference Points
| Comparison | Rate |
|---|---|
| US Federal Statutory | 21% |
| State Taxes | 0-12% |
| International varies | 0-35% |
| Typical Tech ETR | 12-18% |
Examples
=hf_Effective_tax_rate("AAPL", 2023, 4)=hf_Effective_tax_rate("MSFT", "ly")=hf_Effective_tax_rate("GOOGL", 2023, , "TTM")=hf_Effective_tax_rate(A1, B1, C1)=hf_Effective_tax_rate("META", "lq")When to Use
- Analyzing tax efficiency
- Comparing tax burdens across companies
- Understanding geographic income impact
- Modeling after-tax profitability
- Evaluating tax planning effectiveness
When NOT to Use
| Scenario | Use Instead |
|---|---|
| Need statutory rate | Use 21% for US federal |
| Need tax expense amount | Check income tax expense functions |
| Company has losses | ETR may be negative/meaningless |
| Need deferred tax info | Check deferred tax functions |
Common Issues & FAQ
Q: Why is the effective rate different from 21% US corporate rate? A: Multiple factors: international income taxed at different rates, R&D credits, stock compensation deductions, state taxes, and other tax planning strategies.
Q: What if the rate is negative or very high? A: Negative rates occur with tax benefits and losses. Very high rates (> 40%) may indicate one-time charges, repatriation taxes, or accounting adjustments.
Q: Why do tech companies often have low effective rates? A: R&D tax credits, stock compensation deductions, and income earned in lower-tax jurisdictions (historically Ireland, Netherlands) reduce effective rates.
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