1031 Exchanges · Nationwide · Updated October 2026
A 1031 exchange runs on two clocks: the IRS deadlines and the lender's closing timeline. Here is how to line them up, how much new debt you need to avoid a tax bill, and what to do when the 1031 exchange loan is running late.
By Michael McGovern, Founder | 25+ Years in Commercial LendingCommercial Mortgage Connection · Yonkers, NY The short answer
1031 exchange financing means closing a commercial loan on the replacement property inside the IRS deadlines: 45 days to identify it and 180 days to close, or the tax return due date if that comes first. The honest part first: the IRS will not extend those deadlines because a lender is slow, and no broker can promise a closing date. What you can control is starting the 1031 exchange financing before the sale, sizing the new debt correctly, and keeping a faster backup ready.
- The 45 and 180 day rule: per the IRS, replacement property must be identified within 45 days of the sale and received within 180 days, or by the due date of the tax return including extensions, whichever is earlier. They cannot be extended except for presidentially declared disasters.
- The debt rule: under the Form 8824 instructions, mortgage debt you are relieved of counts like cash received unless offset by debt you take on or cash you add. Replace the old loan, or expect a possible tax bill.
- The loan clock: bank and agency loans commonly take 30 to 60 days from a signed term sheet, so the loan must start well before day 120.
- Related read: the full sequence from scenario call to funding is in our guide to the commercial real estate financing process.
Data points checked 2 October 2026 against IRS Fact Sheet FS-2008-18, the 2025 Instructions for Form 8824, the Federal Reserve and FRED. Commercial Mortgage Connection gives no tax advice; confirm every tax point with your qualified intermediary and tax advisor.
What this page covers
- 1031 exchange financing basics: the anatomy of a two-clock deal
- What the 45 and 180 day rules actually require
- What the debt rule actually costs in dollars
- Why the lender clock and the tax clock run separately
- Reverse exchanges and bridge loans: the invisible third channel
- What investors can actually control: 4 levers
- What this page will not tell you: three honest limits
- Does this apply in your state?
- Financing a 1031 exchange: FAQ
1031 exchange financing basics: the anatomy of a two-clock deal
A Section 1031 exchange lets an investor defer tax on the sale of investment real estate by reinvesting in other real property. Since 2018, according to the IRS instructions for Form 8824, like-kind treatment applies only to real property held for use in a business or for investment, not property held primarily for sale. The sale proceeds go to a qualified intermediary rather than to you; the IRS notes that using one is a way to avoid premature receipt of the cash, which can disqualify the exchange.
The financing problem is that two clocks start at once. The tax clock starts the day the relinquished property is sold and does not stop. The 1031 exchange loan clock starts only when you engage a lender, and it runs through application, appraisal, third-party reports, underwriting, commitment and closing. The tax clock does not care how long underwriting takes. Every financing decision in an exchange is about making sure the second clock finishes before the first one runs out.
The 45-day and 180-day periods start on the day of the sale and cannot be paused while a lender finishes underwriting.
What the 45 and 180 day rules actually require
IRS Fact Sheet FS-2008-18 sets out the two limits. You have 45 days from the date you sell the relinquished property to identify potential replacement properties. The replacement property must be received, and the exchange completed, no later than 180 days after the sale or the due date, with extensions, of the income tax return for the year of the sale, whichever is earlier. The fact sheet adds that these limits cannot be extended for any circumstance or hardship except presidentially declared disasters.
The "whichever is earlier" clause catches investors who sell late in the year. Take an example sale closing on 16 November 2026. Day 45 falls on 31 December 2026 and day 180 on 15 May 2027. But an individual's 2026 federal return is typically due on 15 April 2027, a month before day 180. Unless the return is put on extension, the exchange must close by mid-April, which takes a month off the loan timeline. Confirm the dates for your own entity and filing status with your tax advisor before you plan the loan.
What the debt rule actually costs in dollars
1031 exchange financing is not only about speed; it also decides whether part of the exchange becomes taxable. The 2025 Instructions for Form 8824 treat net liabilities assumed by the other party, meaning debt you are relieved of in excess of debt you take on, cash you add and other property you give, as money received. Take an example: you sell a property for $4,000,000, pay off a $2,000,000 mortgage at closing, and $2,000,000 of equity goes to the qualified intermediary. These are simplified illustrations of the arithmetic, ignoring closing costs, not tax advice.
| Replacement price | Exchange equity used | New loan | Potential taxable boot |
|---|---|---|---|
| $5,000,000 | $2,000,000 | $3,000,000 | $0: more debt replaced than relieved |
| $4,000,000 | $2,000,000 | $2,000,000 | $0: debt fully replaced |
| $3,600,000 | $2,000,000 | $1,600,000 | $400,000 of net debt relief |
| $4,000,000 | $1,700,000 | $2,300,000 | $300,000 of cash taken out |
The last two rows are the 1031 exchange boot traps. Buying for less and borrowing less leaves $400,000 of debt relief unreplaced. Taking $300,000 of cash out of the exchange and borrowing more to make up for it does not fix the problem, because under the netting in the instructions, new debt offsets the old debt you were relieved of but not cash you received. The 1031 exchange loan amount is part of the tax plan, so give your lender a target loan amount that your qualified intermediary and tax advisor have checked. Then size the loan against the property in the free loan calculator.
Two questions
Where are you in the exchange?
How do you plan to finance the replacement?
Why the lender clock and the tax clock run separately
The IRS clock is fixed; the lender clock depends on the 1031 exchange loan you choose. Our apartment loan guide puts a normal bank or agency closing at 30 to 60 days from a signed term sheet, with most of that window spent on appraisal and third-party reports rather than credit, while bridge and debt fund closings frequently run two to four weeks. Lender appetite also varies: the Federal Reserve's July 2026 loan officer survey shows banks easing commercial real estate standards on net while still describing them as near the tighter end of their range since 2005, which means the right lender for a deadline file is not always the first one you call.
| Day | Exchange milestone | Financing milestone to aim for |
|---|---|---|
| Before day 0 | Qualified intermediary engaged | Lender conversations and term sheet indications on likely targets |
| Day 0 | Sale closes; proceeds go to the intermediary | Loan application ready to submit |
| By day 45 | Replacement property identified | Signed term sheet on first choice, indications on backups |
| Days 45 to 120 | Contract and due diligence | Appraisal, third-party reports, underwriting |
| Days 120 to 150 | Closing preparation | Commitment, rate lock, loan documents |
| Day 180 or tax return due date, if earlier | Exchange must be complete | Funded with two to four weeks of buffer |
Read the table backward. A bank or agency loan that needs up to 60 days after a signed term sheet has to have that term sheet by around day 90 at the latest, and earlier if the tax return deadline cuts the window. Waiting to apply for a 1031 exchange loan until after identification is the most common way an exchange runs out of time. Rates matter too: the 10-year Treasury stood at 5.26% on 29 September 2026 per FRED, and a rate lock late in the timeline can change the loan amount the property supports, as our guide to debt yield and loan sizing explains.
Appraisal and third-party reports on the replacement property usually set the pace of the loan, not the borrower's credit review.
Reverse exchanges and bridge loans: the invisible third channel
Sometimes the replacement property has to close before the old one sells. The IRS describes a reverse exchange as acquiring the replacement property through an exchange accommodation titleholder, where it is parked for no more than 180 days, and the Form 8824 instructions point to Revenue Procedure 2000-37, as modified by Revenue Procedure 2004-51, for the details. Financing a reverse exchange is harder than a standard one, because the property is held by the accommodation titleholder during the parking period, and not every lender will lend into that structure. Ask early whether a lender has done it before.
The more common rescue is speed. When a bank loan is running late, or the identified property needs a fast close, a bridge or private loan can fund in weeks rather than months, at a higher rate and with a planned refinance into permanent debt. What a fast close actually requires is covered in our guide to a bridge loan that closes in three weeks. Compare the bridge cost with the tax at stake: paying more interest for a year can be far cheaper than a failed exchange.
What investors can actually control: 4 levers
1. Start the loan before the sale. Talk to lenders while the relinquished property is under contract, and get term sheet indications on the kind of property you plan to buy. The day the sale closes, the application should be ready to submit.
2. Identify a financeable backup. Identify more than one property, within the identification rules your qualified intermediary explains, and make sure each one can carry the loan you need. A backup that no lender will finance is not a backup.
3. Size the loan to the tax plan. Agree the target replacement price and loan amount with your qualified intermediary and tax advisor first, so the new debt replaces the old debt and no cash leaves the exchange unintentionally. Then confirm the property supports that loan on coverage and leverage, as our apartment building loans guide explains for 5+ unit properties.
4. Matching and speed. A deadline file needs a lender that can close on time, not only one with a good rate. Commercial Mortgage Connection works a 750+ lender network with 500K+ programs across all 50 states, with $1B+ originated, every engagement led personally by founder Michael McGovern, and a loan review response within 4 hours.
What this page will not tell you: three honest limits
It will not give you tax advice. The rules quoted here come from IRS publications, and the examples are simplified. Your gain, basis, entity structure and filing deadlines decide the real tax result; your qualified intermediary and tax advisor are the people who confirm it.
It will not guarantee a closing date. Appraisals, title issues and seller delays can push any loan back. A plan that only works if nothing slips is not a plan for a 180-day deadline.
It is written by a brokerage. Commercial Mortgage Connection is paid when loans close, which is exactly why this page tells you to start before the sale, keep a faster backup, and accept a more expensive bridge loan when the tax at stake is larger. If your own bank can commit in time at the amount your plan needs, that quote deserves to win.
Does this apply in your state?
Commercial Mortgage Connection is headquartered in Yonkers, NY and places loans through its 750+ lender network in all 50 states. Section 1031 is federal law, so the 45-day and 180-day periods and the treatment of debt relief apply nationwide.
State rules differ. State income tax treatment of exchanges, transfer and recording taxes, and closing practices vary from state to state, and some states have their own reporting or withholding requirements on exchanges. Confirm the rules for both the state you are selling in and the state you are buying in with your qualified intermediary and tax advisor before you sign a contract.
Financing a 1031 exchange: FAQ
How does 1031 exchange financing work?
The sale proceeds go to a qualified intermediary, and you buy the replacement property with that equity plus a new commercial loan, closing within the IRS deadlines: 45 days to identify and 180 days to close, or the tax return due date if earlier. The loan is underwritten like any purchase loan, so the work is starting early enough that appraisal, reports and underwriting finish before the deadline.
Do I need a loan commitment before the 45-day identification deadline?
Not under the IRS rules; the 45-day deadline is for identifying the replacement property. In practice, a signed term sheet on your first-choice property by day 45 is the safest plan, because bank and agency loans commonly need 30 to 60 days from a signed term sheet, and the 180-day deadline counts from the sale, not from identification.
Does a smaller mortgage on the replacement property create boot?
It can. Under the netting described in the IRS instructions for Form 8824, mortgage debt you are relieved of counts like money received unless offset by debt you take on or cash you add. In a simplified example, paying off a $2,000,000 loan and taking only $1,600,000 of new debt leaves $400,000 of net debt relief, potentially taxable up to the amount of gain. Confirm with your tax advisor.
What happens if my loan does not close within 180 days?
The IRS states the 180-day limit cannot be extended for any circumstance or hardship except presidentially declared disasters, so a late closing generally means the exchange fails and the gain may become taxable. That is why a backup plan matters: a bridge or private loan can often close in weeks if the original loan is running late.
Can I buy the replacement property before I sell?
Yes, through a reverse exchange, where an exchange accommodation titleholder holds the replacement property for no more than 180 days, under procedures in Revenue Procedure 2000-37 as modified. Financing is harder because the titleholder holds the property during that period, and not every lender will lend into the structure, so confirm lender experience early.
Sources
- Internal Revenue Service, Fact Sheet FS-2008-18: Like-Kind Exchanges Under IRC Section 1031. 45-day and 180-day limits, tax return due date rule, no extensions except presidentially declared disasters, qualified intermediaries, reverse exchanges. Checked 2 October 2026.
- Internal Revenue Service, 2025 Instructions for Form 8824, Like-Kind Exchanges. Real property limitation since 2018, netting of liabilities as money received, Revenue Procedure 2000-37 reference. Checked 2 October 2026.
- Federal Reserve Board, July 2026 Senior Loan Officer Opinion Survey on Bank Lending Practices. CRE standards eased on net; levels still near the tighter end of the range since 2005. Checked 2 October 2026.
- FRED, Market Yield on U.S. Treasury Securities at 10-Year Constant Maturity (DGS10). 29 September 2026 observation, 5.26%. Checked 1 October 2026.
Michael McGovernFounder, Commercial Mortgage Connection. Michael wrote this guide drawing on a career that began at Bear Stearns & Co. in 1997, ran through structuring billions of dollars in CMBS and MBS in Bear's F.A.S.T. group and selling mortgage product at Lehman Brothers, and now spans more than $1 billion in originated mortgages.
Stop starting the loan after the sale. Line up the lender before the clock starts.
A senior banker reviews your exchange timeline, target property and loan amount against lenders that can close inside your deadline, with a response within 4 hours. If your own bank can commit in time, we will say so. Call 888-656-9812, live operator 24/7.
Facts on this page were verified against the cited IRS, Federal Reserve and FRED sources on 2 October 2026. Tax rules, deadlines, lending terms and closing timelines change, and every figure shown above is a dated observation or an example, never an offer or a forecast. Nothing on this page is a loan offer, a rate quote, a prediction, or personalized financial, legal or tax advice; consult a qualified intermediary and a tax advisor about your exchange.
All financing is subject to lender approval, credit review and property underwriting, and no approval is guaranteed. Terms depend on the asset, the leverage, the sponsor profile and the lender program on the day you apply. Broker licensing and closing rules vary by state. Commercial Mortgage Connection is a commercial mortgage brokerage, is paid when loans close, and sells the service described on this page. Equal Housing Opportunity. Call 888-656-9812 to discuss your scenario.
