A 1031 exchange is a tax deferral, not a sale followed by a purchase – and that distinction is exactly where the bookkeeping gets missed. The proceeds from the relinquished property never touch your bank account. A qualified intermediary holds them the entire time, which means the transaction that just deferred a real tax liability will not show up anywhere on a normal bank feed. If nobody is watching for it specifically, it is easy for the books to simply never record what happened.
The timeline that drives everything
Two deadlines run concurrently from the day the relinquished property closes, and neither can be extended – not even if the deadline lands on a weekend or holiday. You have 45 calendar days to identify replacement property in writing, signed, and delivered to the qualified intermediary. The full exchange, including closing on the replacement property, has to complete within 180 calendar days of the original closing. The 45 days are not in addition to the 180 – they are the first stretch of the same window.
The qualified intermediary has to be engaged before the relinquished property closes. If sale proceeds are made available to you at any point, even briefly, the IRS can treat the whole thing as a taxable sale instead of a valid exchange – which makes the intermediary relationship itself something the books need to reflect correctly from day one, not clean up after the fact.
Where the books actually need attention
The relinquished property has to come off the books correctly. That means removing the asset and its accumulated depreciation, not just deleting the account once the property is gone.
The replacement property goes on at carryover basis, not purchase price. The deferred gain reduces the recorded basis of the new property below what you actually paid for it. Booking the replacement property at full purchase price is the single most common 1031 bookkeeping error we see, and it quietly overstates the depreciable basis every year until someone catches it.
Boot gets tracked separately. Any cash or non-like-kind property received in the exchange is boot, and it is taxable in the year of the exchange even though the rest of the gain is deferred. If the books do not isolate it, it either goes unreported or gets mixed in with the deferred portion.
None of this shows up automatically from a bank feed, because the money the exchange is actually about never passes through your bank. It has to be built as a deliberate entry, tied to the qualified intermediary’s closing statements, not assumed from what QuickBooks connects to.
If you have a 1031 exchange coming up, or one already closed that you are not confident landed on the books correctly, book a free discovery call and we will walk through what actually needs to be on the books versus what your intermediary already handled.
Had a cost segregation study done on a property you are now exchanging? See our cost segregation bookkeeping breakdown for what needs to be on the books.

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