Understanding Seller IRR vs Opportunity Cost
How Seller-Financing Cash Flows Work
With seller financing, the seller is effectively the lender on
the financed balance. Instead of receiving all cash at closing,
the seller receives:
- Cash at closing (down payment)
- Monthly payments during the hold period (Balloon / Hold Period)
- A balloon payoff at the end of the term (end of Balloon / Hold Period)
Seller IRR
Seller Internal Rate of Return (IRR) is the annualized return the seller earns on the seller-financed balance (the portion of the purchase price paid over time).
It reflects the return generated by:
- Monthly payments
- The final balloon payoff
Think of this like the yield on a private loan or bond.
Opportunity Cost (Low, Mid, High)
The Opportunity Cost inputs represent what the seller might
reasonably expect to earn if they received cash today and
invested it elsewhere.
Because seller-financed offers pay part of the purchase price
over time, those future payments are worth slightly less than
cash received today. The calculator adjusts for this by
converting the monthly payments and balloon payoff into their
present value.
This allows the seller-financed offer to be compared directly to
a traditional cash offer today.
The three opportunity cost assumptions represent different
possible investment alternatives for the seller's money across a
spectrum of return expectations.
-
A practical range is often between 1% and
6%+, depending on risk tolerance and
available alternatives.
-
Lower assumptions increase present value; higher assumptions
decrease present value.
Example ranges:
-
1%-2% might represent very low-risk
investments, such as:
- Treasury bills or high-yield savings
- Certificates of deposit (CDs)
-
3%-4% might represent moderate return
expectations, such as:
- Conservative bond funds
- Private lending at relatively low risk
-
6%+ might represent higher return
expectations, such as:
- Real estate debt investments
- Private lending or other income-focused investments
By adjusting these assumptions, sellers and agents can see what
the seller-financed offer is worth today under different return
expectations.
In short: "What cash offer today is equivalent to these future
payments?"
Seller IRR vs OC
The last row compares the seller-financed return to each
opportunity cost assumption:
-
Positive → the seller-financed return is
higher than alternative investment at the given OC % assumption
-
Negative → the return is lower than
alternative at the given OC % assumption
Why This Matters
Seller financing can often support a higher purchase price,
while allowing the seller to receive:
- Immediate cash at closing
- Income during the hold period
- A final balloon payoff
It can also reduce pressure for future price cuts by keeping the
headline price stronger while still giving the buyer terms that
improve affordability.
-
If buyer financing is tight, terms can sometimes preserve more
seller value than repeated listing price reductions.
-
Use Total (Equivalent Cash Offer) to compare
that structured offer directly against a clean cash offer.
This calculator converts those future payments into a
cash-equivalent value, helping sellers and agents evaluate the
offer against a traditional cash sale.