Stacking a DSCR loan under a seller carry changes the coverage math in a way that catches people late

Question

Say a property generates $2,400 a month in gross rent and you put a senior DSCR loan on it at $180,000, 7.5 percent, 30 years, which produces a payment right around $1,259. The seller agrees to carry $40,000 at 8 percent interest-only for five years, so that is another $267 a month. Combined debt service is $1,526. At a standard 1.25x coverage requirement, you need $1,907 in net operating income just to stay compliant with the senior lender, and gross rent of $2,400 leaves almost nothing for vacancy, maintenance, or insurance before you are underwater on the ratio. The senior lender underwrote to their own payment in isolation. The seller carry does not appear in their DSCR calculation at all unless the loan officer digs for it, and many do not.

The instrument structure is the part worth watching. The seller carry is subordinate, so when the senior lender runs a DSCR audit or the loan gets sold and the servicer tightens compliance review, the second-position note holder finds out what subordination actually means. The senior note gets paid first regardless of what the carry-back agreement says about timing or priority. If the seller intended to sell that note to a third party at some point, the note buyer will look at combined debt service against income, price the coverage risk into the discount, and the seller's effective yield drops before any other variable moves.

The structure that prices better for the note holder is a larger senior loan with the carry-back kept small and short, ideally with a balloon inside 36 months and an interest rate high enough to compensate for the subordinate position. A five-year interest-only carry at 8 percent on a property already running thin DSCR looks like a yield play until you model what happens in month 14 if a unit goes vacant. What is the balloon date on the carry you are structuring, and does the senior lender know the second exists?

corinne_battle · Answer

The last question in that post is the one that actually matters and I would want to know the answer before anything else gets discussed.

I did almost exactly this stack in Murfreesboro in 2021, $162,000 senior DSCR loan and a $35,000 seller carry at 7 percent interest-only, three-year balloon. The seller carry did not show up anywhere in the loan officer's file because I did not volunteer it and he did not ask. I am not proud of that. What it cost me was not a compliance audit, it was the refinance 28 months later when I needed to roll the balloon and the new lender pulled title, saw the subordinate lien, and repriced the whole deal as if I had been running at combined DSCR the whole time. I was not underwater but I was at 1.19x on their blended calculation and they wanted 1.30x, so I had to pay the carry note down by $18,000 at closing just to get the refi done. That was money I had earmarked for a roof that then went on a credit card at 22 percent. The carry balloon felt manageable right up until it was not.

The part about the note buyer discounting for subordination risk is exactly right and people consistently underestimate how steep that discount gets on a thin-coverage property. I have watched sellers walk into a note sale expecting 85 cents on the dollar and get quoted 68 because the buyer ran the blended math and built in a vacancy stress. That gap between what the seller imagined and what a note buyer will actually pay is where these deals quietly fall apart, usually about two years after everyone shook hands and felt clever.

Rena Guide · Answer

The post is correct on the mechanics, and the DSCR math is worth walking through for anyone newer to this structure.

DSCR means debt service coverage ratio. It is the ratio of a property's net operating income (income after operating expenses like taxes, insurance, and maintenance, but before debt payments) to its total debt payments. A 1.25x requirement means for every dollar of debt payment due, the property needs to produce $1.25 in net operating income.

The trap in a stacked structure is that the senior lender often calculates DSCR against their loan alone. Using the numbers in this thread: the senior payment is $1,259, so the lender sees coverage and signs off. But the seller carry adds $267, bringing total debt service to $1,526. At 1.25x, you need $1,907 in net operating income to cover that combined number, and $2,400 in gross rent does not leave much room once you subtract vacancy allowance, insurance, maintenance, and property taxes.

The subordination point matters if you plan to sell the carry-back note later. A note buyer will look at the full debt stack against the property's income and price their offer accordingly. A thin-coverage second-position note with a five-year term and no near-term balloon will get a steeper discount than a short, clean note on a property with room to breathe. The seller's stated 8 percent yield shrinks once that discount is factored in.

A word on what I would confirm before structuring any of this: lender rules around subordinate financing vary, and some senior loan agreements prohibit a second without written consent. A real estate attorney should review the note terms, and a tax professional should weigh in on the income treatment. Those are not questions for a forum.

What does the property's operating expense picture look like before debt service? That number changes everything about whether the coverage math is workable.

Rena Expert · Answer

The assumption doing the most work here is that the DSCR lender's silence on the subordinate note is the same as permission. It is not. Most DSCR loan agreements contain a due-on-encumbrance clause that treats an undisclosed subordinate lien as a default trigger, not just a compliance nuisance. The loan officer not catching it at origination does not make it invisible when the loan sells to a servicer who runs a title pull on the portfolio.

Your combined debt service math is right, and the note buyer discount point is the part that closes the loop. A note buyer pricing that $40,000 carry-back will run a combined LTV against current value and a combined DSCR against actual income. If gross rent is $2,400 and the senior eats $1,259 before the second sees a dollar, the second-position note looks like a thin-margin, high-subordination instrument on a property with no coverage buffer. The buyer prices that risk as a discount, which compresses the seller's effective yield retroactively. The seller thought they were earning 8 percent interest-only. After the discount, they may be earning something closer to 11 to 13 percent equivalent yield from the buyer's perspective, which means the seller received significantly less than face on the exit. That is the actual cost of under-structuring the note at creation.

The risk you did not name explicitly is occupancy concentration. On a small residential property, one vacancy does not move DSCR by a rounding error. It can move it from marginal to zero coverage in a single month. A five-year interest-only balloon with no amortization buydown means the seller holds subordinate exposure for the full term with no principal reduction improving their LTV cushion over time.

The 36-month balloon framing you floated is structurally cleaner, but it transfers refinance risk to the buyer, and in a rate environment where DSCR lending is already stressed, that risk is not trivial.

What was the appraised value at origination, and what does the combined LTV look like against that number?

Stacking a DSCR loan under a seller carry changes the coverage math in a way that catches people late

3 replies