There’s something incredibly satisfying about cleaning out old paperwork and finally getting rid of those overstuffed folders. But before you start shredding old tax documents, stop for a moment—because throwing away the wrong records too soon could create major problems if the IRS ever comes calling.
The good news is that not every document needs to be kept forever. The key is knowing what to keep, what to shred, and how long the IRS can legally question your tax return. Let’s break it down step by step.
In most situations, the IRS has three years from the date you file your tax return to audit you or assess additional taxes.
Because of this, you should generally keep supporting tax documents for at least three years, including:
One important detail:
If you file your taxes early, the three-year clock starts on the official tax deadline—not the day you filed.
The standard three-year rule doesn’t always apply. There are several situations where the IRS has much longer to review your return.
If you underreport more than 25% of your gross income, the IRS gets six years to audit your return.
Even accidental omissions can trigger this extended timeline.
If you:
The IRS has unlimited time to investigate and assess taxes.
Some documents are far too important to destroy after only three years.
If you own:
You should keep purchase records for as long as you own the asset, plus at least three years after you sell it.
These records establish your cost basis, which determines how much capital gains tax you owe when you sell.
Without proof of basis, you could end up paying far more tax than necessary.
Keep retirement plan records for as long as the account remains open, plus three years after it is fully depleted.
This includes:
A major warning:
If you made nondeductible contributions to an IRA, keep those records indefinitely. Losing them could result in being taxed twice on the same money.
If you claim a deduction for:
The IRS recommends keeping those records for seven years.
Good recordkeeping doesn’t just help during an audit—it also protects you financially.
For example, if you sell a property years later and can’t prove your original purchase price or improvements, the IRS may assume a lower basis, increasing your taxable gain.
Let’s say you bought an investment property 15 years ago and spent thousands on renovations over time.
If you kept your purchase and improvement records, you can add those costs to your basis and reduce your taxable gain when you sell.
If you threw those records away too early, you may lose those tax benefits entirely.
To stay organized and protected:
Good organization today can save you major stress later.
Knowing how long to keep tax records is one of the simplest ways to protect yourself from unnecessary IRS headaches and avoid overpaying taxes in the future.
While many documents can eventually be shredded, others should be stored carefully for years—or even indefinitely.
If you’re unsure what to keep and what to toss, contact Guerrero CPA at 210-490-7100. Our team can help you organize your records, protect your financial history, and stay fully prepared for any IRS questions.