Tax FAQs
General explanations of common tax concepts. Rules vary by jurisdiction and change over time.
What is taxable income?
An amount of income subject to tax after applying relevant rules, adjustments and deductions.
What is a tax bracket?
A range of taxable income associated with a specified rate in a bracketed tax system.
What is a marginal tax rate?
The rate applying to an additional portion of taxable income under a given tax structure.
What is an effective tax rate?
A measure comparing tax with a broader income amount. The exact calculation depends on context.
What is the difference between a deduction and a credit?
A deduction generally reduces income subject to tax; a credit generally reduces calculated tax liability when allowed.
What is withholding?
Money deducted from a payment, such as wages, and remitted for taxes under applicable rules.
What is a capital gain?
A gain generally arises when an asset is sold for more than its relevant cost basis, subject to applicable tax rules.
Are all capital gains taxed the same?
No. Treatment can vary by jurisdiction, asset, holding period, account type and taxpayer circumstances.
Can Numelios tell me exactly what tax I owe?
No. Numelios calculators are educational estimates and cannot replace current official tax rules or professional advice.
Why can tax rules change calculator results?
Rates, brackets, deductions, credits and eligibility rules can change by year and jurisdiction.
Tax information is general education only. Use current official tax authority information for filing and consequential decisions.