What you'll learn
- Define marginal tax rate conceptually
- Separate deductions and credits at a basic level
A tax bracket is a range of income taxed at a particular rate. A marginal tax rate is the rate that applies to the next unit of taxable income. It does not usually mean every dollar of income is taxed at the highest rate.
A deduction generally reduces the amount of income subject to tax. A credit generally reduces tax owed. Exact rules vary by jurisdiction, so labels and calculations should be checked against local rules.
Do not mix systems
Canadian and American tax terms can sound similar but operate under different rules. Specific account names, rates, and limits should be handled separately by country.
Concept example
If part of income falls into a higher bracket, the higher rate applies to that portion, not necessarily to all income.