Deductions vs. credits
A deduction reduces the income your tax is calculated on — its value depends on your tax bracket. A credit reduces your actual tax bill dollar-for-dollar, regardless of bracket, which generally makes credits more valuable per dollar than deductions.
Standard vs. itemized deductions
Most filers take the standard deduction — a fixed amount that requires no documentation. Itemizing (listing specific deductible expenses like mortgage interest or charitable donations) only makes sense if the itemized total exceeds the standard deduction amount for your filing status.
Choosing a filing status
| Status | Typically used by |
|---|---|
| Single | Unmarried filers with no dependents |
| Married filing jointly | Married couples combining income and deductions |
| Head of household | Unmarried filers supporting a qualifying dependent |
Filing status affects your standard deduction amount and tax brackets, so it's worth confirming you qualify for the most advantageous status rather than defaulting to the simplest-seeming one.
Common mistakes that trigger notices
- Mismatched income reporting — forgetting a form from a side job or a bank that issued a small interest statement
- Claiming a dependent someone else also claims
- Math or transcription errors from manual entry rather than imported figures
- Missing the filing deadline without requesting an extension, which can add penalties even if no tax is ultimately owed