The short answer
Your 45-day and 180-day periods start on the day the trust closes its sale, whatever day your share of the proceeds reaches your qualified intermediary. If the intermediary is engaged and the sponsor has its details before closing, your share is paid to the intermediary rather than to you, and you can reinvest as soon as it holds the funds and your replacement is ready to close. The days between closing and that wire are set by the sponsor's closing and distribution process, not by tax law, so ask for them in writing; any holdback released later follows on its own timetable and must also reach the intermediary inside the exchange period to count.
At a glance
| Clock starts | The trust's closing date, when the property is transferred |
|---|---|
| Money must not reach you | Actual or constructive receipt of the full proceeds before replacement turns the exchange into a sale |
| Set up first | Exchange agreement signed and written notice of the assignment given on or before the closing |
| Identification | Written, signed and sent to a person involved in the exchange, such as the intermediary, by midnight on day 45 |
| Closing early counts | A replacement received before day 45 is treated as identified |
| Release rules | The agreement must limit your access to the funds until the exchange period ends or another permitted event |
| Holdbacks | Released later, and inside the exchange only if paid to the intermediary before the period ends |
The clock runs from the trust's closing, so every day between closing and the wire is a day of your 45
Under Reg. section 1.1031(k)-1(b)(2), the identification period begins on the date the taxpayer transfers the relinquished property and ends at midnight on the 45th day; the exchange period ends at midnight on the earlier of the 180th day or the due date, including extensions, of the return for that year. Property is transferred when it is disposed of within the meaning of section 1001(a). A DST owner is treated as owning an undivided share of the trust's property under Rev. Rul. 2004-86, so the trust's closing is your transfer.
That makes the processing time after closing your cost, not the sponsor's. If, hypothetically, your share reaches the intermediary five business days after closing, about a week of your identification period is already gone. Ask the sponsor before closing how many days it expects between the sale and the payment to intermediaries, and plan your replacement as if the money arrives on the last of them.
Set up the intermediary before closing so the money never becomes yours
Under Reg. section 1.1031(k)-1(f), if you actually or constructively receive money in the full amount of the consideration before you receive replacement property, the transaction is a sale, not a deferred exchange, even if you later buy replacement property. The qualified intermediary safe harbor in paragraph (g)(4) prevents that, but only if the arrangement is in place in time.
Paragraph (g)(4)(v) treats the intermediary as entering into the sale agreement when the rights of a party are assigned to it and all parties are notified in writing on or before the date of the transfer. Paragraph (g)(6) requires the exchange agreement to limit your right to receive, pledge, borrow or otherwise obtain the benefits of the money before the exchange period ends, with narrow exceptions. Sign the exchange agreement, give the sponsor the intermediary's details and complete whatever election or direction form the sponsor uses, all before closing. Whether you need an intermediary at all is answered at do I need a QI to exchange into a DST, and choosing one at how to choose a qualified intermediary.
The sequence from closing to reinvestment, step by step
The order below is the usual flow; the timing of each step is set by the sponsor's closing and distribution process and your intermediary's procedures, so ask both for dates.
Interest earned while the intermediary holds your funds is taxed under Reg. section 1.468B-6, generally to the intermediary unless all earnings are paid to you, in which case you report them; see interest on exchange funds.
- Sale notice: engage the intermediary, sign the exchange agreement, send its details to the sponsor.
- Closing day: the trust transfers the property. Day 1 of 45 and of 180 begins.
- Settlement: the lender, closing costs, any disposition fee and the holdback are taken out; your percentage of the rest is computed.
- Distribution: your share is wired to the intermediary, not to you.
- By day 45: a signed written identification is delivered to the intermediary, or the replacement has already closed.
- Reinvestment: the intermediary wires to the replacement's closing, such as a DST sponsor's escrow, as soon as subscription documents are accepted.
- Later: any holdback release goes to the intermediary if the exchange period is still open.
You can reinvest the day the intermediary holds the money, and closing early removes the identification risk
Nothing requires you to wait until day 45. Under Reg. section 1.1031(k)-1(c)(1), replacement property you receive before the end of the identification period is treated as identified. A DST purchase can often close once the intermediary has funds and the sponsor accepts your subscription, which is why many investors move part of the money into a DST quickly and keep the identification open for the rest; see how quickly a DST can close.
If you identify instead, the identification must be in a written document you sign, sent before the end of day 45 to the person obligated to transfer the replacement or another person involved in the exchange, such as the intermediary, under paragraph (c)(2). Name backups within the three-property or 200-percent limits, as explained at how many properties can I identify.
The holdback follows its own timetable, so plan the exchange around the main distribution
Part of your share may be held back for post-closing claims and adjustments. A release that reaches the intermediary before the exchange period ends can still be used toward an identified replacement; one that arrives after the period ends, or is paid to you, is outside the exchange and taxable to the extent of your gain. Ask the sponsor for the holdback amount and expected release date when the sale is announced. The details are at DST wind-down: final distributions.
For the wider decision of where your share goes next, see what happens when a DST sells, and for a sale before the projected hold, when the sponsor sells early.
Related questions
Does my 45-day period start when the QI receives my share?
No. It starts on the date the trust transfers the property. Days spent processing the distribution count against your 45 and 180 days.
What happens if the sponsor wires my share to me by mistake?
Receiving the money before you receive replacement property is actual receipt, and receiving the full amount turns the exchange into a sale under Reg. section 1.1031(k)-1(f). Prevent it by confirming the intermediary's details with the sponsor in writing before closing.
Can I sign up with an intermediary after the trust closes?
Not for proceeds already paid to you. The assignment and written notice must be in place on or before the transfer, so engage the intermediary when the sale is announced.
How fast can the money go into a new DST?
As soon as the intermediary holds it and the sponsor accepts your subscription. A replacement received before day 45 counts as identified, which removes the identification risk for that portion.
Who pays tax on interest earned while the QI holds my money?
Under Reg. section 1.468B-6, generally the intermediary, unless the agreement pays all earnings to you, in which case you report them.
Sources
Checked against these publications on September 30, 2026. Rules and figures change; confirm the current version with your CPA or attorney before you act. This page is general information, not tax or legal advice.
