1031 Exchange Calculator
Analyze your 1031 exchange opportunity with comprehensive tax deferral calculations. Determine boot, deferred gain, and new basis while ensuring IRS compliance.
🏠Relinquished Property (Selling)
📊Basis & Depreciation
🔄Replacement Property (Buying)
💰Tax Rates
• Depreciation recapture rate: 25% (federal)
• Long-term capital gains: 0%, 15%, or 20% based on income
• State rates vary by location
Exchange Analysis
Total Gain Realized
$330,000
Gain Deferred
$330,000
Tax Due Now
$0
Tax Savings
$73,500
✅ Fully Qualified Exchange - 100% tax deferral achieved!
Boot & Tax Analysis
Exchange Requirements
Equal or Greater Value Test
Replacement: $900,000 ≥ Sale: $750,000
Equal or Greater Debt Test
New Mortgage: $400,000 ≥ Old: $300,000
Boot Test
No boot - full deferral
New Property Basis
Understanding 1031 Exchanges
A 1031 exchange, named after Section 1031 of the Internal Revenue Code, allows real estate investors to defer capital gains taxes when selling an investment property and reinvesting the proceeds into another "like-kind" property. This powerful tax strategy enables portfolio growth without immediate tax liability.
Key Requirements
- Like-Kind Property: Both properties must be held for investment or business use
- 45-Day Identification: Must identify replacement property within 45 days
- 180-Day Closing: Must close on replacement within 180 days
- Qualified Intermediary: Cannot touch the proceeds; must use QI
- Equal or Greater Value: Replacement should be of equal or greater value
- Equal or Greater Debt: New mortgage should equal or exceed old mortgage
Types of 1031 Exchanges
Delayed Exchange
Most common type. Sell first, then buy replacement within 180 days. Requires Qualified Intermediary to hold funds.
Reverse Exchange
Buy replacement first, then sell relinquished property. More complex and expensive but useful in competitive markets.
Improvement Exchange
Use exchange funds for improvements on replacement property. Must be completed within 180-day period.
Simultaneous Exchange
Both properties close on the same day. Rare but eliminates timing risks.
Understanding Boot
Boot is any value received that doesn't qualify for tax deferral. This includes:
- Cash Boot: Any cash or cash equivalents received
- Mortgage Boot: Reduction in mortgage debt
- Personal Property: Non-real estate items included in sale
Tax Treatment
Important: Boot is taxable in the year of the exchange. The tax consists of: depreciation recapture (25% federal rate) on accumulated depreciation, plus capital gains tax (0%, 15%, or 20% federal) on remaining gain, plus applicable state taxes.
Common Pitfalls to Avoid
- Missing Deadlines: 45 and 180-day deadlines are strict with no extensions
- Improper Identification: Must be in writing and delivered to QI
- Taking Possession of Funds: Constructive receipt disqualifies exchange
- Related Party Transactions: Special rules apply to family members
- Not Using a QI: Required for all delayed exchanges
Pro Tip: Consider working with experienced 1031 exchange professionals including a Qualified Intermediary, real estate attorney, and tax advisor. The complexity and strict requirements make professional guidance essential for successful exchanges.
About This Calculator
Calculate tax deferral benefits for 1031 like-kind exchanges with detailed boot analysis, deadline tracking, and property comparison tools for investment real estate.
Frequently Asked Questions
What is a 1031 exchange?
A 1031 exchange allows real estate investors to defer capital gains taxes when selling an investment property and purchasing a replacement property of equal or greater value.
What are the key deadlines?
You have 45 days from sale to identify up to 3 replacement properties, and 180 days to complete the purchase. Missing these deadlines disqualifies the exchange.
How is boot calculated?
Boot is the taxable portion of an exchange, including cash received or mortgage debt reduction. To avoid boot, replacement property must have equal or greater value and debt.
What are the key deadlines in a 1031 exchange, and what happens if I miss them?
A 1031 exchange has two strict IRS deadlines that cannot be extended under normal circumstances. First, you have 45 days from the date you sell your relinquished property to identify potential replacement properties in writing to your qualified intermediary. Second, you must close on the replacement property within 180 days of the sale (or the due date of your tax return, whichever is earlier). If you miss the 45-day identification window, the entire exchange fails and you owe capital gains tax immediately — in 2025, that means up to 20% federal long-term capital gains tax plus the 3.8% Net Investment Income Tax for high earners, plus applicable state taxes. Missing the 180-day close deadline has the same result. There are very limited exceptions for federally declared disasters. Always work with a qualified intermediary before closing the relinquished property sale, as you cannot receive proceeds directly without disqualifying the exchange.
How much tax can I defer with a 1031 exchange on a property I've owned for 10 years?
The tax deferral from a 1031 exchange can be substantial. For example, suppose you bought a rental property for $300,000 in 2015 and sell it in 2025 for $700,000. Your gain is $400,000. At the 2025 long-term capital gains rate of 20% for high-income earners, plus 3.8% NIIT, you'd owe roughly $95,200 in federal taxes alone — before state taxes. Additionally, you may owe depreciation recapture tax at 25% on any depreciation taken over the years. If you claimed $100,000 in depreciation, that's another $25,000. A successful 1031 exchange defers all of this, allowing the full $700,000 to roll into a larger replacement property. Over multiple exchanges, this compounding deferral can significantly accelerate portfolio growth. The deferred tax only becomes due when you eventually sell without exchanging — or it may be eliminated entirely if the property passes to heirs via step-up in basis.