1031 Exchange & Reverse Exchange Timeline Calculator
Estimate the 45-day identification deadline and effective receipt deadline for forward and reverse 1031 exchanges, including EAT parking arrangement timelines, value gaps, and equity-reinvestment checks.
Last updated: 2026-03-27
1031 exchange timeline calculator
Enter your values
Estimate key deadlines for forward or reverse 1031 exchanges, including EAT parking arrangement timelines, and compare replacement value and equity reinvestment.
Key Exchange Deadlines
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Enter the relinquished closing date and replacement assumptions to estimate the identification and receipt deadlines.
Calculation History(0)
Example calculations
Tap an example to prefill the calculator with sample values.
Full-value replacement
Higher replacement value with return extended
A simple forward exchange case where the buyer is mostly checking the calendar and whether value and equity replacement stay intact.
Result: The exchange stays inside both calendar windows and avoids obvious value or equity shortfalls under this simplified screen.
Potential boot pressure
No extension and lower replacement value
Useful for seeing how an unextended return can shorten the effective exchange window while lower value and cash reinvestment create boot risk.
Result: Without an extension, the tax-return due date can become the real receipt deadline, and lower value or equity reinvestment can create taxable boot exposure.
Reverse with EAT parking
Buy replacement first via parking arrangement
A reverse 1031 exchange where the EAT acquires the replacement property on March 1, then you must identify and sell the relinquished property within the standard 45/180-day windows.
Result: The EAT parking arrangement under Rev. Proc. 2000-37 gives you 180 days to complete the exchange. The identification deadline and sale deadline both run from the acquisition date.
Reverse exchange — tight timeline
No EAT, no extension, buy first
A reverse exchange without a formal parking arrangement and without extending the tax return. This can compress both the identification and receipt windows significantly.
Result: Without an EAT or extension, you face tighter deadlines and more complexity. The IRS may not recognize the exchange without a qualifying parking arrangement.
How the 1031 exchange timeline estimate works
The calculator adds 45 days for the identification deadline and 180 days for the exchange deadline, then compares that 180-day date with the tax-return deadline implied by your extension choice. In forward mode, deadlines run from the relinquished closing date. In reverse mode, they run from the replacement acquisition date.
For reverse exchanges, an EAT parking arrangement under Rev. Proc. 2000-37 creates the 180-day safe harbor. The calculator also compares purchase prices and reinvested cash to flag value and equity shortfalls that can point to potential boot exposure.
1031 exchange FAQs
Use these answers to interpret the deadline math and the simplified value-replacement screen carefully.
Why can the final receipt deadline be earlier than 180 days?
Because a forward 1031 exchange generally must be completed by the earlier of 180 days after the transfer of the relinquished property or the due date of the tax return for that year, unless the return is extended.
What do the value and equity gaps mean?
They are simple screens for the most common full-deferral checks: replacing at least as much gross value and reinvesting at least as much net equity. They do not replace tax or legal advice.
Does the calculator handle identification rules or intermediary mechanics?
No. It only frames the calendar and the simplest value and equity replacement checks. Identification rules, title structure, closing sequence, debt replacement mechanics, and legal documentation are outside this model.
What is a reverse 1031 exchange?
A reverse exchange lets you acquire the replacement property before selling the relinquished property. The IRS safe harbor under Rev. Proc. 2000-37 typically requires an Exchange Accommodation Titleholder (EAT) to 'park' one property. The same 45/180-day deadlines apply, but run from the acquisition date.
What is a parking arrangement in a 1031 exchange?
A parking arrangement is where a qualified EAT holds title to either the replacement or relinquished property during the exchange period. This is the standard structure for IRS-compliant reverse exchanges and creates a 180-day safe harbor window.
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