Six-Year General Guideline
The IRS recommends taxpayers keep tax records for at least the three-year period the government has to collect underpaid taxes from taxpayers. The IRS may collect additional taxes for six years from taxpayers who have failed to report income exceeding 25 percent of his gross taxable income. Therefore, taxpayers should keep records for at least six years. If the IRS selects the taxpayer for an audit, then the IRS tax commissioner can review records for the past three years.
Exception to Six-Year Record Retention
For taxpayers claiming investment and brokerage losses of income, then the IRS recommends retaining tax receipts and investment records for at least seven years. There is no statute of limitations deadline for the IRS to pursue tax claims from certain taxpayers. The IRS has no deadline to collect back taxes from taxpayers who have prepared false or fraudulent tax returns. Additionally, the IRS has an unlimited amount of time to collect taxes from taxpayers who intentionally or inadvertently did not file tax returns for a given year. Taxpayers in these situations should keep records indefinitely.
Electronic Records or Cash Receipts
In addition to tax forms and tax returns, taxpayers should keep all records that prove deductions, income and loss on their Form 1040s. These records include employer-generated W-2 statements, self-employment 1099 records and tax forms, investment account records and any other electronic or paper records that can provide substantiation of any investment activity, income or tax deduction.
State Statutes and IRS Help
Each state has its own revenue or tax department with state statutes that may provide longer limitations' periods than the federal code allows the IRS. Additionally, taxpayers may contact the IRS to request records of tax returns they filed for previous years and any backup attached to that year's return. Taxpayers may obtain the Form 4506 and list the tax years that they are requesting records.