Definition
An installment sale is a transaction in which a property seller receives at least one payment after the tax year of the sale. Instead of recognizing the entire capital gain in the year of disposition, the seller reports gain proportionally as payments are received.
How It Works
In many real estate installment sales, the seller provides seller financing to the buyer. Payments typically include:
- Return of basis (non-taxable principal recovery)
- Capital gain portion (taxable)
- Interest income (taxed as ordinary income)
Basic Gain Allocation Formula
- Gross Profit = Sale Price – Adjusted Basis
- Gross Profit Percentage = Gross Profit ÷ Contract Price
- Taxable Gain per Payment = Payment × Gross Profit Percentage
Example
Property sells for $5,000,000 with an adjusted basis of $3,000,000.
- Gross Profit = $2,000,000
- Gross Profit Percentage = 40%
If the seller receives a $500,000 principal payment, $200,000 (40%) is recognized as capital gain in that year.
Tax Advantages
- Defers capital gains taxes over multiple years.
- Potentially reduces tax bracket exposure.
- Smooths taxable income across tax periods.
Limitations and Risks
- Depreciation recapture may be taxed immediately.
- Buyer default risk if seller financing is involved.
- Interest rate risk on long-term notes.
- Liquidity constraints versus lump-sum sale.
When It Is Used
- Estate and succession planning.
- Deferring large tax liabilities.
- Markets with limited buyer financing options.
- Income-focused disposition strategies.
Comparison to 1031 Exchange
- Installment Sale: Defers and spreads tax liability.
- 1031 Exchange: Fully defers capital gains if proceeds are reinvested.