Trying to understand whether a lien portfolio behaves like a bond book at all

I look at lending because I'd rather hold paper than a roof. Someone described a scaled lien operation to me as a bond ladder where the county does the collecting, and that framing stuck in my head enough that I want to check it.

What I think I understand: you pay the delinquent taxes, the county gives you a certificate, and if the owner pays up you get your money plus interest set by statute rather than negotiated. If they don't pay inside the redemption window there's a process that can end with the property.

Where the bond ladder framing breaks for me is duration. With a bond I know the maturity date. Here the owner decides when to redeem, and it could be month two or month twenty-two. So I have a portfolio where every position can prepay at any time and I can't reinvest until the next auction season.

Is that actually how people running these at size think about it, or am I importing the wrong mental model? Not asking anyone to tell me where to put money, I just want to know if the analogy is worth keeping.

Answer

3nicole_adeyemiPassivePRO5

Keep half the analogy and throw out the other half.

The cash flow shape is closer to a callable bond book than a ladder. You're right that redemption timing is the borrower's option, and the statutory rate is usually annualized, so an early redemption in some states still pays a minimum. Others just pay the accrued amount. That's a state by state question and it changes the arithmetic a lot, so whichever state you look at, read that provision first.

Where the analogy fails is the collateral. A bond is a claim on a company's cash. A lien is a claim on a specific parcel, and the parcels are not fungible. I work in land, and the thing that surprises people is how much delinquent tax inventory is stuff nobody wants at any price. Landlocked remainders, drainage strips, half a former mobile home pad. Those redeem at a much lower rate because the owner has already decided the parcel isn't worth the taxes.

So at scale the job splits in two. One half is the yield math you're describing. The other half is parcel screening so your non-redeemers are properties you'd be content to end up with. Operations that skip the second half report a fine average rate and then discover their unredeemed book is worthless dirt with mowing violations attached.

Duration risk is real and annoying. Worthless collateral is what actually loses money.

Trying to understand whether a lien portfolio behaves like a bond book at all

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