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1031 Exchange Timeline Calculator

Estimate the 45-day identification and 180-day exchange deadlines for a potential 1031 exchange.

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Estimated 180-Day Exchange Deadline
Estimated 45-Day Identification Deadline2026-06-15

Deadline Summary

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Assumptions

  • All values, dates, rates, and tax assumptions are entered by the user.
  • Calculations run locally in your browser and are not stored by Calwarden.
  • Results are planning estimates only and are not tax, legal, accounting, lending, or investment advice.

Sensitivity preview

No numeric sensitivity scenarios are available.

Formula: Identification deadline = closing date + 45 calendar days. Exchange deadline = closing date + 180 calendar days.

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About this 1031 Exchange Timeline Calculator

Use this planning calculator to estimate the two commonly discussed 1031 exchange timing milestones: the 45-day identification deadline and the 180-day exchange completion deadline.

Who this calculator is for

  • Real estate investors preparing for a potential sale and replacement-property search.
  • Brokers, advisors, and operators building an initial 1031 exchange calendar.
  • Owners who need a quick deadline estimate before contacting their exchange team.

When to use it

  • Estimate deadline dates before listing or closing a relinquished property.
  • Stress-test whether replacement-property diligence can fit inside the exchange window.
  • Create a planning calendar to review with a qualified intermediary and tax advisor.

How to use this calculator

  1. Enter the relinquished-property sale or closing date.
  2. Review the estimated 45-day identification deadline.
  3. Review the estimated 180-day exchange deadline and confirm it with your exchange team.

Key assumptions

  • All values, dates, rates, and tax assumptions are entered by the user.
  • Calculations run locally in your browser and are not stored by Calwarden.
  • Results are planning estimates only and are not tax, legal, accounting, lending, or investment advice.

Accuracy and testing

Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.

View accuracy page

How this calculator works

Identification deadline = closing date + 45 calendar days. Exchange completion deadline = closing date + 180 calendar days. The calculator uses calendar-day addition from the user-entered closing date.
Identification deadline = closing date + 45 calendar days. Exchange deadline = closing date + 180 calendar days.

Inputs explained

Sale or closing date

The date the relinquished property closes. This date starts the estimated 45-day and 180-day exchange windows.

Understanding your results

The primary result is the estimated 180-day exchange deadline. The table also shows the 45-day identification deadline. These dates are planning estimates only; tax-return due dates, weekends, holidays, failed closings, identification rules, and intermediary requirements may affect the real process.

Example scenarios

Calendar example

If a relinquished property closes on March 1, the estimated 45-day identification deadline is April 15 and the estimated 180-day exchange deadline is August 28.

Key Features

  • 45-day identification deadline estimate
  • 180-day exchange completion deadline estimate
  • Clear caution language for tax and legal review

Things to Keep in Mind

This calculator does not determine eligibility, identification validity, related-party treatment, boot, financing structure, tax-return due-date issues, or compliance with IRS rules. It is not tax or legal advice.

Tips & Best Practices

  • Contact a qualified intermediary before closing the relinquished property.
  • Build a replacement-property shortlist early; 45 calendar days can pass quickly.
  • Confirm whether tax-return filing deadlines require special handling for your exchange.

Glossary of Terms

Identification deadline
The commonly cited 45-day window for identifying replacement property after the relinquished-property sale.
Exchange deadline
The commonly cited 180-day window for completing the acquisition of replacement property.
Qualified intermediary
A specialized exchange party that holds exchange proceeds and helps administer the transaction under 1031 exchange rules.

Frequently Asked Questions

Is the 1031 exchange timeline always 45 and 180 days?
Those are common federal timing rules, but real transactions can involve additional tax, filing, intermediary, and legal requirements. Confirm your exact facts with qualified professionals.
Does this calculator decide whether my property qualifies?
No. It only estimates dates from the closing date you enter. Qualification is a tax and legal question.
Are my exchange dates saved?
No. The calculation runs locally in your browser and does not store your entered date.