Daniel Okafor
Tax & Personal Finance Writer · Tax-preparation background
Daniel breaks down income tax, take-home pay, budgeting, and saving without the jargon. After years preparing returns and writing about household money, he's fluent in brackets, deductions, and the difference between marginal and effective rates. He pins every tax figure to the current IRS year and flags exactly what changes from one filing season to the next, so readers aren't caught out by stale numbers.
Areas of expertise
Articles by Daniel Okafor
- Tax Calculators: Every Formula Behind All 25 Tools (2026)
Every tax calculator on Calcavio, explained with its exact 2026 formula - from US federal brackets to UK VAT, Canadian rates, and Australian GST.
- Savings Calculators: All 11 Formulas Explained
Every Calcavio savings calculator explained - 11 tools, 11 formulas, 11 worked examples, from savings goals and CD ladders to 529 college plans.
- Personal Finance Calculators: All 15 Formulas Explained
Every Calcavio personal finance calculator explained - 15 tools, 15 formulas, 15 worked examples, from the 50/30/20 budget to your FI number.
Reviewed by this author
- Auto Calculators: Every Vehicle Formula, Explained
Fourteen auto and vehicle calculators, the exact formula behind each one, and a worked example you can check by hand before you sign anything.