Dr. Paul Borosky, DBA, MBA
Business Consultant & Author
Guide 9 of 34 · The Income Statement
How to Calculate Effective Tax Rate (Apple Example)
One division. One surprising spike.
The effective tax rate is the share of pre-tax profit a company actually pays in tax. It takes one line from the income statement divided by another. Apple’s sat in the mid-teens for years, then jumped to 24.1% in fiscal 2024. The reason had nothing to do with how well Apple ran its business.
Last Updated: 10/27/2026 · Written by Dr. Paul Borosky, DBA, MBA
The Short Answer
How Do You Calculate the Effective Tax Rate?
Textbook Definition
The effective tax rate equals income tax expense (the provision for income taxes) divided by earnings before taxes. It differs from the statutory rate because of credits, deductions, foreign income, and one-time items.
In Plain English
Take the tax line from the income statement. Divide it by the profit right above it, earnings before taxes. That percent is what the company really paid, not the headline rate in the tax code.
Effective Tax Rate
Income Tax Expense ÷ Earnings Before Taxes
Apple, fiscal 2025: 15.6%
Both numbers sit near the bottom of the income statement. Apple labels taxes provision for income taxes.
One Real Company
Apple’s Taxes and Tax Rate, 2021 to 2025
Four normal years in the low-to-mid teens. One year that stands out.
| Line | 2025 | 2024 | 2023 | 2022 | 2021 |
|---|---|---|---|---|---|
| Earnings before taxes | 132,729 | 123,485 | 113,736 | 119,103 | 109,207 |
| Taxes | 20,719 | 29,749 | 16,741 | 19,300 | 14,527 |
| Effective tax rate | 15.6% | 24.1% | 14.7% | 16.2% | 13.3% |
| Tax growth | −30.4% | 77.7% | −13.3% | 32.9% | n/a |
Source: Apple Form 10-K filings as analyzed in the book. $ millions.
The Method
How to Analyze a Tax Rate in 5 Steps
Find taxes and EBT.
Both sit at the bottom of the income statement, one line apart.
Divide.
Taxes ÷ EBT. Do it for five years so you can see the pattern.
Look for stability.
Analysts prefer a steady rate. The book notes large corporations often land somewhere around 16% to 22%.
Hunt down any spike.
When one year jumps, read the notes and management’s discussion. Apple’s 2024 jump traces to a single European charge.
Check what it did to net income.
Apple’s higher 2024 tax bill is a big reason net income dipped that year. See the net income guide.
Why One Year Can Fool You
Apple’s taxes rose 77.7% in 2024, then fell 30.4% in 2025. Read either year alone and you would draw the wrong conclusion. Read all five and the story is clear: a low, steady rate with one unusual year. That is why the book grades Apple’s tax management an A.
Compare It
Apple vs. Microsoft: Similar Territory
| Latest fiscal year | Apple | Microsoft |
|---|---|---|
| Effective tax rate | about 16% | about 18% |
Microsoft’s fiscal year ends in June, Apple’s in September. Figures from the book.
Both low by historical standards, and neither doing anything unusual. When two peers show similar tax rates, the difference in their profits is coming from the business itself.
Why It Matters
Why Does the Effective Tax Rate Matter to an Analyst?
Every dollar of tax is a dollar that does not reach net income. A company that keeps its tax rate low and steady lets more of its operating profit reach the owners.
The rate also feeds bigger calculations. The book points out that valuation work and the weighted average cost of capital both need a tax rate. Use the wrong one and every number built on it is off.
There is also a quality check hidden in the rate. A company whose rate swings wildly from year to year is harder to forecast, because its bottom line depends on events outside its business. A company like Apple, sitting in the mid-teens most years, gives you a bottom line you can project with more confidence. Predictable taxes make predictable earnings.
One caution when you compare companies. Firms with large operations in lower-tax countries can show low effective rates for perfectly legal reasons. Do not reward or punish a company for its rate until you understand where its profits are earned. The notes to the financial statements break this down.
Effective vs. statutory is the key distinction. The statutory rate is what the law says. The effective rate is what the company actually paid after credits, deductions, and where its profits were earned. For analysis, the effective rate is the one that matters.
Beginner Traps
Tax Rate Mistakes Beginners Make
- Dividing taxes by revenue instead of EBT.
- Confusing the statutory rate with the effective rate.
- Judging a company on a one-time tax spike.
- Forgetting that a tax charge can drag down net income.
- Ignoring the notes that explain an unusual year.
- Assuming a higher tax bill means the business got weaker.
How the Book Grades Apple’s Taxes
From the Book
What Similar Rates Tell You
Income Statement · Tax Rate
Business, Not Tax Maneuvering
When two peers show similar tax rates, it usually means the difference in their profits is coming from the business itself, not from tax maneuvering.
Taxes, EBT, net income, and the ratios built on them, all on Apple and graded. It is all in the book.
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Effective Tax Rate Questions
What is the effective tax rate formula?
What is the difference between the effective and statutory tax rate?
Why did Apple’s tax rate jump in 2024?
Keep Going
Related Guides
Taxes sit just above the bottom line. See the full guide for the rest.
Written by Dr. Paul Borosky, DBA, MBA, business consultant, author, and adjunct finance instructor with an MBA focused in finance.
This page is for general educational purposes only. It is not investment, financial, tax, accounting, or legal advice, and nothing here is a recommendation to buy or sell any security. Apple and Microsoft figures come from their public filings as analyzed in the book. Apple and Microsoft are trademarks of their respective owners, and this page is not affiliated with or endorsed by either company.