1031 Exchange Recordkeeping: Documents, Basis, and Retention

By Jerry Baker

Keep a 1031 exchange file that proves what you sold, what you identified, what you bought, and how the money and tax basis moved. Beyond closing statements, keep the exchange agreement, dated property lists, cost records, and your CPA's final calculations. Keep the old property's basis history with the new property's records, since that tax history can carry forward.

Build the file around questions someone may need to answer

A useful exchange file tells a clear story. Who was the taxpayer? Why was the real estate held? When did each transfer occur? What did the taxpayer receive? How did the exchange avoid an improper receipt of funds? What gain was deferred, and what basis remains?

The answers matter both now and later. Form 8824 reports the exchange, while later returns may depend on the basis of the replacement property. Selling the original building does not necessarily make its purchase records obsolete. IRS guidance specifically calls for keeping old and new property records after a nontaxable exchange. [1] [2]

I would organize the file so a new CPA can follow it without reconstructing every conversation. That means keeping evidence and calculations together, while labeling which documents are drafts, which were signed, and which were used on the filed return.

A tidy file cannot turn a failed exchange into a valid one. It can help you catch problems while there is time to act. It also shows the facts behind the tax position you took.

Start with a one-page master index

Put a short summary at the front of the file. Record the taxpayer's legal name, the property addresses, the QI's legal name, and key adviser contacts. Use a secure location for taxpayer identification numbers and account details rather than placing them in a broadly shared summary.

List each property transfer date, the identification deadline, and the exchange completion deadline. Show who checked the dates and when. In a delayed exchange, the standard rules use a 45-day identification period and an exchange period ending at the earlier of 180 days or the applicable return due date, including extensions. [3]

Add links or references to the documents supporting the summary. A date typed in a spreadsheet is not the same thing as the deed, closing evidence, or delivery record that proves it. Keep those sources close enough that another person can find them.

Include an open-items list. For each missing item, name the person responsible, the request date, and the next step. A visible “waiting for final payoff statement” is more useful than a blank cell that looks finished.

Document ownership and how the property was used

Keep the deeds and the entity or trust documents that show ownership. Include any adviser notes on who is treated as the taxpayer. If the name on a deed differs from the tax return name, ask your advisers to explain that relationship in the file. Do not assume a name difference is either harmless or fatal.

Section 1031 generally requires real property held for investment or productive use in a trade or business. Records of actual use help support that requirement. Depending on the property, the file may include leases, rent records, management agreements, business-use records, and dates of any personal use. [4]

Save evidence that reflects what happened, including facts that need explanation. Do not rewrite a history of personal occupancy as a rental history. If use changed, document the dates, reasons, and actions taken. Let the CPA and attorney assess the facts.

For jointly owned property, record each owner's interest and identify the party making each exchange. Avoid combining several owners' figures into one total before the advisers determine how the transactions should be treated.

Gather the original property's full basis history

The old property's adjusted basis is a central input. Start with acquisition documents, then collect records of later changes. These may include capital improvements, depreciation schedules, prior exchanges, casualty events, and other adjustments. That number is not today's loan balance. It is not just the cash you once put down. [5]

Ask for the complete depreciation schedule, including assets that have been fully depreciated. A total from the latest return may not show the history needed to classify gain or continue the proper records. Keep federal and state schedules distinct when they differ.

For improvements, retain the invoice, proof of payment, description of work, and the year it was placed in service. A payment alone may not explain whether the amount was a repair, an improvement, a deposit, or work on another property. Your CPA decides the tax treatment from the supporting facts.

If the property came through an earlier exchange, include that earlier Form 8824 and its basis workpapers. If it was inherited or received as a gift, collect the documents supporting the applicable starting basis. Do not substitute a current appraisal for that history. [5]

Keep the executed exchange documents as a group

For a typical exchange using the qualified-intermediary safe harbor, retain the signed agreement, relevant contract assignments, and required notices. Keep the final sale and purchase contracts. Include all amendments. Record who received each document and when.

The regulation sets requirements for the QI's role and the taxpayer's restricted access to exchange funds. It also describes circumstances in which assignments and written notices can satisfy transfer requirements without the QI taking legal title. The signed papers and dates matter. A generic clause saying that a sale is meant to be an exchange is not enough. [3]

Ask the QI for its final transaction file, but retain your own copy. The provider's online portal should not be the only place the records exist. Confirm that the download includes signed pages and attachments rather than a list of filenames or blank forms.

Keep legal and tax advice in the location your attorney recommends. This organizational guide does not decide privilege or who should receive confidential advice. Share the transaction records with the team without assuming every document belongs in the same public-facing folder.

Preserve identification and delivery evidence

Save the signed written identification exactly as delivered. It should identify the replacement property clearly enough to meet the rules and go to a permitted recipient within the identification period. Keep evidence of delivery, not just a copy saved on your own computer. [3]

If the identification was sent electronically, retain the original message, attachments, recipient information, and timestamps. Ask the QI to confirm receipt. That reply is helpful. Still, check that the list, recipient, and timing meet the rule.

Keep every revision and revocation, with a clear record of the sequence. A later list should not silently erase an earlier one from your archive. How you revoked the earlier list can affect which properties count. Preserve the documents needed for your adviser to determine that answer.

Save the support for any property-count or value calculation. If you rely on the 200% rule, record the relevant fair market values and their source. If a purchase changes, ask the QI and counsel whether it is still the property you named. Do not edit the old record after the fact. [3]

Reconcile the cash trail from sale to purchase

Collect the final settlement statement for the sale, the loan payoff evidence, and the QI's receipt confirmation. Then collect each outgoing transfer, replacement closing statement, and any final release of money. The goal is to explain the balance from beginning to end.

For a simple hypothetical cash reconciliation, suppose the final sale statement shows $900,000 sent to the QI. The QI then pays $540,000 toward one replacement purchase, $350,000 toward another, and $2,000 in documented charges. A remaining $8,000 balances the cash account. These figures show only where cash went.

That reconciliation does not decide whether the charges are exchange expenses or whether the remaining money creates taxable gain. The CPA still needs to classify each item and calculate the tax result. A balanced bank account is useful. It does not complete Form 8824.

Record money you add from outside the exchange and any new borrowing separately. Also identify credits, refunds, interest, and amounts paid directly by another party. Small unexplained differences can become large amounts of work if no one remembers their source a year later.

Keep receipts behind the closing statement

A settlement statement may group several charges under one label. Retain the invoice or other support showing what the charge purchased, who paid it, and which property it relates to. This helps the CPA sort the charges. Loan costs, current expenses, deposits, and exchange costs can receive different treatment.

IRS Publication 551 distinguishes exchange expenses from other closing entries such as property taxes, rent prorations, security deposits, and repairs. Those entries do not all receive the same basis treatment merely because they appear on the closing statement. [5]

Create an expense schedule with the amount, payee, date, document reference, and the CPA's final classification. Use a separate column for costs still under review. Do not treat a proposed category as final just because a spreadsheet formula needs a number.

If a closing statement is corrected, preserve both versions and label the final one. Note what changed and tell the CPA. A corrected commission, credit, or debt figure may affect a calculation that was already prepared from the earlier version.

Keep a basis bridge, not just a final number

A basis bridge shows how you moved from the old property's adjusted basis to the new property's basis. It should connect the source documents, the gain calculation, and the final tax return. Ask your CPA to explain each adjustment in terms you can follow.

Consider a simplified qualifying exchange with no debt, expenses, or cash received. You give up investment land worth $800,000 with an adjusted basis of $300,000 and receive investment land worth $800,000. The $500,000 gain is deferred, and the replacement basis is $300,000. The new property's value does not reset its tax basis to $800,000. [5]

Now add $200,000 of your own cash and receive qualifying land worth $1 million under the same simplified assumptions. The replacement basis becomes $500,000. The file should show both the original $300,000 basis and the added $200,000, not just the final result.

Real exchanges can involve debt, cash received, expenses, multiple assets, and recognized gain. Those facts require additional adjustments. Avoid a shortcut that subtracts “boot” from basis without also accounting for gain recognition and the other applicable items. Keep the CPA's complete calculation. [5]

Track several replacement properties separately

If one sale funds several purchases, create a page for each property. Record its legal description, acquisition date, cost, debt, cash used, ownership interest, and allocated tax basis. Tie each page back to the exchange-wide calculation.

Do not simply divide the total basis by the number of properties. Basis allocation and multi-asset exchange rules need the correct values and facts. Form 8824 instructions address multi-asset exchanges and supporting statements. Your records should help the CPA do that work. Missing facts force guesswork. [2]

For a DST interest, retain the offering documents you received, subscription documents, acceptance evidence, closing confirmation, and tax information supplied for your interest. List the equity invested, allocated debt, and total price as separate amounts. Use the figures in the final deal documents.

Keep your investor-specific basis records even if a sponsor supplies a tax package. A sponsor may provide property-level information without knowing the basis carried from your prior sale. Ask your CPA how the package connects to your exchange history rather than assuming the two numbers are interchangeable.

Close the loop with the filed return

After the purchases close, schedule a handoff to the tax preparer. Provide the master index, executed documents, identification evidence, closing statements, cash reconciliation, and basis records. Explain open issues now. Do not leave them for the preparer to find at the filing deadline.

Form 8824 is generally filed with the return for the year in which the relinquished property was transferred. The instructions also address reporting multiple exchanges and filing in the two years after a related-party exchange. The filing task does not always end with the initial exchange year. [2]

Save the filed return, Form 8824, attachments, and the final supporting schedules. Mark draft calculations as superseded. Ask the CPA to identify which numbers should carry into next year's depreciation and property records.

Review state reporting separately. For example, California has Form FTB 3840 requirements for certain exchanges of California property for property outside the state, including continued reporting. Keep the state's required schedules and filing evidence with the exchange record. Do not assume the federal filing satisfies every state requirement. [6]

Do not apply a blanket three-year destruction rule

The IRS gives general limitations periods for tax records, but property records require a longer view. Keep records relating to property until the applicable period expires for the year of its disposition. For property received in a nontaxable exchange, retain the old property's records with the new property's records. [1]

That can mean decades when one exchange leads to another. The original purchase may still help support the basis in a later property. A closed tax year does not mean all its records have lost their use. Some may still support future returns.

Ask your CPA to set a retention policy based on the facts, including amendments, state rules, and any open issues. Check legal, lender, and insurance needs before discarding records that are no longer needed for federal tax purposes. The IRS specifically warns that nontax reasons may require longer retention. [1]

Keep an estate or business-successor contact aware of where the archive exists. You do not need to give everyone access now. It means avoiding a situation where the only person who knew the folder's location is no longer available.

Make the digital file readable and durable

Electronic records still need to meet the requirements that apply to tax records. IRS Publication 17 says the electronic system must be maintained for as long as the records remain material to tax administration. A pile of unreadable scans is not a useful substitute for an organized paper file. [7]

Check every scan for missing pages, cut-off amounts, signatures, and attachments. Use descriptive filenames with dates and version labels. Keep the original delivered file when available, especially for signed documents and identification messages.

Maintain a backup separate from the main working copy and test that it can be opened. Limit access to people who need it. When changing computers, advisers, or storage services, check the archive before closing the old account. These are practical preservation steps, not a claim that a particular product meets every legal requirement.

If a record is missing, request a replacement from the original source and document the effort. Reconstructed schedules should identify their sources and uncertainties. Never create a backdated identification, signature, or receipt to make the file appear complete.

A folder plan you can hand to your team

You do not need a complex system. One master folder with a few clear parts can work. Use the same structure for each exchange so the next person knows where to look.

• Start here: the master index, contacts, key dates, and open items.
• Old property: purchase records, prior basis schedules, leases, use history, and sale papers.
• Exchange: signed QI agreement, assignments, notices, property lists, delivery proof, and fund records.
• New properties: one folder per purchase, with contracts, debt records, closing papers, and later improvements.
• Tax: final workpapers, basis bridge, filed returns, state forms, and next-year notes.

Use a working folder for drafts so they do not crowd out final records. When a final document arrives, check it, label it, and update the index. Do not delete the earlier version if it helps explain a change.

At the handoff, ask your CPA to pick a figure from the final return and trace it back to its source. Can the team find the old basis? Can it explain a charge? Can it locate proof that the property list was sent? This simple spot check tests whether the file can be used.

Make the index useful to a future adviser as well as today's team. Avoid labels such as “the deal we discussed” or “final final new.” A property name, date, and document type are clearer. If a file has a password, keep the access process in a secure place that an authorized successor can use.

Frequently asked questions

What are the most important documents to keep?

Keep the signed exchange agreement, relevant assignments and notices, written identification and delivery evidence, sale and purchase documents, fund records, old basis history, and filed Form 8824 with supporting calculations. The exact file depends on your transaction. No single document proves every part of an exchange.

Can I discard the old property's records after three years?

Not as a general rule. Old records may still support the replacement property's basis, depreciation, and later gain. The IRS directs taxpayers to retain old and new property records after a nontaxable exchange until the applicable retention period has expired. [1]

Does the qualified intermediary prepare my tax return?

Do not assume it does. Confirm the scope of each provider's work. The QI's file helps document the exchange, while your tax preparer needs to calculate and report the result using your basis and other tax information.

Is the replacement property's purchase price its tax basis?

Not necessarily. Deferred gain can leave tax basis below the property's acquisition value. Additional cash, debt, expenses, and recognized gain can affect the result. Keep the calculation connecting the old basis to the replacement basis. [5]

Are electronic copies acceptable?

Electronic records are recognized, but they remain subject to tax recordkeeping requirements. Keep them complete and easy to read. Make sure they can be found and opened for the whole required period. Ask counsel whether any original documents should also be kept for legal or other purposes. [7]

What if I buy more than one replacement property?

Keep both an exchange-wide summary and a separate record for each purchase. Your CPA must determine the proper basis allocation and reporting. Do not assign equal basis merely because the properties were acquired in the same exchange. [2]

Can good records fix a missed deadline?

No. Records can show what happened. They may help support a claim for relief if a rule applies. They cannot make a late act timely by changing its date. Preserve the facts and have your advisers assess the consequences. [3]

Educational information, not an offer or a personal tax, legal, or investment recommendation. Examples are hypothetical and omit stated adjustments. Tax treatment depends on your facts and current law. Review your transaction with your CPA, attorney, and qualified intermediary. Real estate investments can lose value and may be illiquid.