Day 0 · Transfer date
Both the identification period and ordinary exchange period begin here.
1031 Exchange Deadline Calculator
Estimate ordinary Day 45 and Day 180 planning dates from the date the relinquished property transferred.
How both periods begin
The transfer date starts both periods at the same time.
Enter the date the relinquished property transferred—not the date a contract was signed. The calculator adds 45 and 180 calendar days without moving a date that lands on a weekend or holiday.
Transfer date
Day 0 starts both clocks
45 calendar daysIdentification period
180 calendar daysOrdinary exchange period
Several transfers in one deferred exchange? Use the earliest relinquished-property transfer date and confirm it with your Qualified Intermediary.
For an active exchange or a closing that is approaching, call 888-747-1031. This calculator does not determine whether a transaction qualifies or whether special relief applies.
1031 Strategies & Services Group
Independent Exchange Services, Inc. & Reverse Exchange Services, Inc.
888-747-1031 · 25954 Eden Landing Road, Hayward, CA 94545
Planning summary
Both periods begin on the transfer date entered.
45-Day Identification Date
The date is not moved when it falls on a weekend or holiday.
Ordinary 180th-Day Date
This may not be the final deadline. The exchange period ends on the earlier of the 180th day or the applicable federal income-tax return due date, including a valid extension.
Want help with an active exchange?
Your dates and downloads are ready whether or not you contact us. If you request follow-up, a team member will contact you.
- Contact is optionalCalculating, printing, and downloading calendar files do not require an email address.
- You choose what is sentThis request includes your email, permission to respond, and the planning dates shown above.
- Timing already matters?Call 888-747-1031 before proceeds move or closing instructions are finalized.
Confirm before acting
This is a general planning estimate, not tax or legal advice. It does not decide whether the entered date is the legal transfer date, whether the property or transaction qualifies, whether an identification was properly completed, or whether disaster, combat-zone, or other special relief changes a date.
For multiple relinquished-property transfers in the same deferred exchange, the earliest transfer generally controls both periods. Confirm every date and transaction-specific exception with your Qualified Intermediary and tax or legal adviser.
Summary generated —. No weekend or holiday adjustment was made.
What the estimate does
A narrow calendar calculation with explicit boundaries.
- Counts Day 0 correctlyThe transfer date is the starting point. Day 45 is Day 0 plus 45 calendar days; Day 180 is Day 0 plus 180 calendar days.
- Keeps calendar datesWeekends and holidays are counted and are not automatically shifted to a business day.
- Stays time-zone neutralThe browser uses date-only arithmetic so daylight-saving changes and local time zones do not move the result.
- Creates separate filesEach calendar download contains one all-day estimated milestone and no email address or other personal information.
Have a sale, purchase, or deadline already in motion?
Speak with the exchange team before proceeds move or closing instructions are finalized.