In a wraparound mortgage, which seat carries more real risk, the seller's or the buyer's.

I had to read your setup twice because I kept losing track of who pays whom. The buyer pays the seller, the seller pays the old loan, the seller keeps the gap. Once I drew it as two arrows it made sense. What I don't understand yet is what happens to the buyer if the seller stops forwarding the money to the underlying lender. The buyer paid, but the loan behind it goes unpaid?

The buyer's real risk in a wrap is the one that rarely shows up in a simple comparison of the two seats: the underlying loan can still be called if the lender discovers the transfer, regardless of how current the payments are. That risk sits on the buyer side and belongs in any honest weighing of which seat is safer.

Taking juniper's question first, because it's the center of the whole structure.

In a wrap, the seller's existing mortgage stays in place. The seller writes a new, larger note to the buyer that wraps around it. The buyer pays the seller, the seller keeps paying the underlying loan, and the difference between the two interest rates is the seller's income. That's the spread kestrel described.

So the buyer's payment does not go directly to the underlying lender. If the seller collects and doesn't forward, the underlying loan can fall behind even though the buyer paid on time. This is one of the main reasons practitioners route wrap payments through a third-party servicer that pays the underlying loan first and remits the remainder to the seller, and why buyers ask for the right to see that the underlying loan is current.

On kestrel's framing of risk. The seller carries buyer-default risk, since the buyer may stop paying while the seller still owes the underlying loan. The seller also carries due-on-sale exposure, because most conventional mortgage documents let the lender call the balance due on a transfer, and whether that clause is triggered and enforced in a given deal depends on the loan documents and the facts. Confirm the terms of the specific underlying loan in writing.

What a default remedy looks like, how the documents are recorded, and what has to be disclosed all differ by state. A wrap needs an attorney licensed where the property sits to draft it.

Take the seller seat on a land deal. The thing that decides whether it's the safer seat isn't the paperwork, it's who the note was sold to. On paper the seller holds the note and the remedy. In practice, chasing a buyer who has stopped paying on a rural parcel can take the better part of a year and a lawyer, while the underlying payment on the wrap still has to be made every month during that stretch. Holding paper only feels like control if there are reserves to cover the loan behind it while the remedy runs.

The buyer seat is the more defensible one for a first creative deal, mainly because it avoids being responsible for a loan whose statements you can't see. Parcel's eleven month stretch is exactly the version of the seller seat that goes wrong.

The seller seat in a wrap tends to look better in a spreadsheet than it does in practice, which is a pattern worth distrusting. The spread income is real and it compounds attention nicely, no tenants, no repairs. But every seller-side stress case tends to follow the same shape as parcel's: the buyer stops paying, the seller keeps paying the underlying loan, and a reserve requirement that wasn't budgeted for becomes the whole answer. In the buyer seat, the worst case is losing what was put in plus time. The buyer seat is the more defensible choice for a first deal, though it's a close call.

A third option worth considering. Carrying a plain note once, before carrying one with somebody else's loan sitting under it, tends to be the more forgiving way to learn the structure.

To explain the point, since that was short. A straight seller financed note has one moving part: the buyer either pays or does not. A wrap has two, and the second one keeps running whether or not the first does. Learning what a default actually costs in time and money is cheaper on the simple version. Then the wrap becomes the same skill plus a servicer and a reserve. Kestrel, one thing worth adding to the seller case: it isn't only the terms set, it's whether the seller can fund the underlying payment for a year if the buyer's money stops arriving.