Tax documentation refers to the records and forms that individuals and businesses must prepare and submit to comply with tax laws. This includes items like W-2 forms, 1099 forms, and receipts for deductible expenses. Proper documentation is essential for accurately reporting income and claiming deductions, ensuring that taxpayers meet their obligations to the IRS or other tax authorities. Maintaining organized tax documentation helps facilitate the filing process and can be crucial in case of an audit. It is advisable to keep these records for several years, as they may be needed to verify information or resolve discrepancies related to tax returns.