Gather all income documents
Add up total taxable income
Identify filing status
Determine deductions
Calculate adjusted gross income
Apply tax brackets to taxable income
Subtract tax credits
Include self-employment tax if applicable
Include other taxes owed
Subtract federal tax withheld and estimated payments
Compare total tax owed to total payments
Estimate refund or amount due
Review state tax separately
Use current tax tables and rates
Verify all figures before filing