Track 45-day identification and 180-day exchange deadlines from your relinquished property closing date.
Exchange timeline
- 45-day identification deadline
- Tue, April 29, 2025 (45 calendar days after closing) 400 days past deadline
- 180-day exchange deadline
- Thu, September 11, 2025 (180 calendar days after closing)
- Tax return due date
- Wed, April 15, 2026
- Effective completion deadline
- Thu, September 11, 2025 180-day rule controls 265 days past deadline
1031 Exchange Date Calculator helps you track 45-day identification and 180-day exchange deadlines from your relinquished property closing date. It is commonly used by finance teams, founders, individual planners for 1031 exchange calculator, 1031 exchange dates, 45 day identification deadline.
What this tool does
Enter the closing date of your relinquished property (Day 0). The calculator shows:
- **45-day identification deadline** — last day to identify replacement property in writing to your qualified intermediary
- **180-day exchange deadline** — last day to acquire replacement property
- **Effective completion deadline** — the earlier of 180 days or your federal tax return due date (with extensions), when you enable that comparison
Example scenario (pre-filled)
A rental sold with a March 15, 2025 closing and a April 15, 2026 tax return due date illustrates a typical timeline where the 180-day rule controls the exchange period.
Not tax or legal advice
IRC §1031 rules, identification rules (three-property, 200%, 95%), and disaster extensions are complex. Confirm every date with your QI and CPA before relying on this schedule.
Disclaimer: This calculator provides information only and is not financial, tax, or legal advice.