A W-2 generally reflects wages paid by an employer along with taxes withheld from pay during the year. A 1099 can reflect other types of reportable income, depending on the form involved. For many readers, the practical difference is that withholding, recordkeeping, and tax planning can look different depending on how income is reported.
Withholding is one of the most important differences
The IRS explains that federal income tax is a pay-as-you-go system. Employees usually have withholding taken from paychecks during the year, while some other income arrangements require more active tax planning from the recipient.
Income statements should be reviewed before filing
The IRS and related taxpayer resources stress that taxpayers should wait for complete wage and income statements before filing a return. That includes forms such as W-2s and 1099s when they apply.
Recordkeeping needs can change
Readers associated with 1099 reporting often need to pay closer attention to documentation, tax planning, and possible estimated taxes. That does not mean every situation is the same, but it does mean the workflow can differ from a standard payroll setup.