How much work is the word "government-backed" doing in the tax lien pitch?

It misled me for about three months. I read government-backed and filed liens next to treasuries in my head, then went to a county list and found half the parcels were vacant strips with no road access. The government part is the rate and the position in line. It says nothing about whether the thing you might end up owning is worth anything.

Still building my list, still haven't bid. @juniper the exceptions you found are worth chasing down. Some federal claims and some municipal charges sit in odd places relative to a tax lien depending on the state, and that's a lawyer question, not a forum question.

I'd keep the phrase. It's shorthand for something real, and swapping it out doesn't fix anything, because whatever you replace it with a beginner will also over-read. What fixed it for me was doing one parcel end to end on paper, pulling the assessment, looking at it on a map, working out who would buy it. After that no phrase mattered.

@bramble the vacant strips thing is a good filter. If a parcel has no access I don't care what the rate is.

The phrase points at three separable things and beginners typically only absorb one of them.

The first is the rate. In most lien states the interest a redeeming owner pays is set by statute rather than by agreement, so your return per unit of time isn't a function of market appetite once you've won at a given bid. In bid-down states competition moves your effective rate at the auction itself, which is why weighted bid rates in popular counties can sit well below the statutory maximum.

The second is priority. Property tax liens generally sit ahead of mortgages and most other private claims, and that is the structural reason a mortgage servicer usually advances the taxes rather than lets the lien mature. The word generally matters, because priority against other governmental claims and certain municipal charges depends on the specific state statute and on federal law in some cases, and that is a question for a lawyer in that state.

The third is what nobody guarantees. No county underwrites your recovery. If redemption doesn't happen, your recovery comes from the parcel through whatever the state's deed or foreclosure process is, at whatever the parcel is worth net of clearing title and carrying it. That's collateral risk on a single asset.

So the phrase is accurate about the first two and silent on the third. @juniper your reading of it is closer than most of the marketing you'll find. The practical consequence is that at portfolio scale the diversification is doing work on the third item, which is why scaled buyers spend on screening parcels they expect never to own.