Calendar days
Weekends do not create extra time.
Day 45 remains the identification deadline even when it falls on a weekend or holiday. Do not build the plan around a last-day delivery.
Professional reference guide
1031 Exchange Closing Timeline
The 45/180-day reference for delayed real-property exchanges
Built for property owners, brokerages, title and closing companies, CPA firms, attorneys, lenders, land and commercial brokers, and professional resource libraries.
The federal framework
Two clocks begin on the same transfer date.
The delayed-exchange timeline is unforgiving. The exchanger generally has 45 calendar days to identify replacement property and must receive qualifying replacement property within the applicable exchange period.
That exchange period ends on the earlier of day 180 or the federal tax-return due date, including extensions, for the year of the relinquished-property transfer. Early coordination protects the time available for documents, identification, due diligence, financing, title, and closing.
Closing timeline
Calendar every milestone on day 0.
The periods below describe the standard federal delayed-exchange framework. Transaction facts can require additional analysis.
- Before closing
Engage the qualified intermediary
Complete the exchange agreement, assignment, notices, and closing instructions before the relinquished property transfers and before the exchanger receives or controls the sale proceeds.
- Day 0
Relinquished property transfers
The transfer date starts both federal periods. The 45-day identification period and the exchange period run concurrently.
- Days 1-45
Identify replacement property in writing
Identification generally must be signed by the exchanger, unambiguous, and delivered to a permitted party by midnight on day 45. Calendar days count, including weekends and holidays.
- Days 46-180
Advance and complete the replacement acquisition
Due diligence, title, financing, and closing must fit inside the exchange period. The federal clock does not pause while those items remain pending.
- Final deadline
Earlier of day 180 or the federal return due date
Replacement property generally must be received by the earlier of 180 days after the sale or the due date, including extensions, of the exchanger’s federal return for the year of transfer.
Concurrent periods
Day 45 is inside the 180-day period.
The replacement-property work should advance before identification so the remaining time can be used for diligence, financing, title, and closing.
Return due date
A tax-return extension may matter.
When the unextended return due date would arrive before day 180, the exchanger should discuss timely extension planning with a tax adviser.
Closing-team handoff
What each professional should calendar and deliver.
Use this sequence to keep the QI, exchanger, broker, closing professional, CPA, attorney, and lender aligned.
Contract stage
Introduce the QI and send the signed contract, taxpayer or entity name, vesting, property details, expected closing date, and closing-team contacts.
Before the sale
Reconcile the QI documents, settlement statement, payoff, closing instructions, and independently verified wire instructions.
At the sale
Transfer the relinquished property, direct proceeds under the QI instructions, and provide the final closing record.
By day 45
Deliver signed, unambiguous written identification to a permitted recipient and retain proof of timely delivery.
Before the purchase
Send the replacement contract, vesting, property description, estimated statement, lender, and closing contacts.
By the exchange deadline
Acquire qualifying identified replacement property and return the final acquisition record to the QI.
For professional resource libraries
A practical resource your clients can use before closing.
North Oak Exchange welcomes professional firms and organizations linking directly to this page or sharing the branded PDF. The guide provides general education while directing each exchanger back to independent tax and legal advisers.
Built for referrals and education
Useful across the professional network.
Real estate brokerages
Give agents a dependable pre-closing reference for spotting exchange candidates and introducing the QI.
Title and closing companies
Use the handoff checklist to coordinate documents, statements, assignments, notices, and funding.
CPA and advisory firms
Share a plain-language timeline while preserving the adviser’s role in tax conclusions and return extensions.
Land and commercial brokers
Help farm, timber, recreational, rental, and commercial-property clients begin planning before closing.
Agricultural organizations
Offer members an educational resource for land sales and reinvestment planning.
Professional directories
Link to a current, branded resource page with a printable guide and federal authority references.
Authorities and further reading
Federal source material
Reference guide FAQs
Common deadline questions
Are the 45-day and 180-day periods measured in calendar days?
Yes. The periods are measured in calendar days. Weekends and holidays do not automatically move the identification deadline.
Do the 45-day and 180-day clocks run one after another?
No. They run concurrently from the relinquished-property transfer. Day 45 falls inside the same exchange period that can end on day 180 or earlier.
Why can the federal tax-return due date shorten the exchange period?
The statutory exchange period ends on the earlier of day 180 or the due date, including extensions, for the exchanger’s federal return for the year of transfer. Exchangers should address return-extension planning with their tax advisers.
Can a professional firm link to or share this guide?
Yes. Firms may link to this webpage from a resource library and may share the downloadable PDF with clients and transaction teams, while keeping the North Oak Exchange branding and educational disclaimer intact.
Before the sale closes
Put North Oak Exchange on the closing checklist.
Early coordination gives the exchanger and professional team time to establish the delayed-exchange structure before proceeds move.
General educational information only - not individualized tax, legal, accounting, investment, brokerage, title, settlement, or real-estate advice. Each exchanger should consult independent advisers.