A fake IRS form that promises to freeze seniors' property taxes — "Form 1098-SR" — is circulating in AI-generated videos, and this month California county tax offices from the Bay Area to the Central Valley have posted near-identical warnings that the form is a fiction.

The version that reached the Bay Area, through a Sonoma County advisory, reads like a local scare. It isn't. The same fake form, the same false promise to freeze taxes or skip school bonds, and the same push to hand over personal information keep surfacing county to county — carried by broad, multi-state videos that officials in Kern County trace to AI generators. For seniors across San Francisco and the wider Bay Area, where property taxes are run by county assessors and tax collectors, the useful question isn't whether the form is real (it isn't) but how to tell the impersonation from the genuine relief programs it copies.

This week, a Sonoma County advisory (external source, opens in a new tab) about a bogus tax form reached Bay Area readers as a local story. It isn't local. On Aug. 19, Sonoma County Clerk-Recorder-Assessor Deva Marie Proto and Auditor-Controller-Treasurer-Tax Collector Erick Roeser warned that online videos and phone calls were urging owners to file a "Form 1098-SR" that supposedly cuts or freezes property taxes or erases school-bond charges. No such IRS form exists, the officials said, and the messages are "not legitimate."

The same fake form, the same promise, and the same request for personal details have surfaced in county after county. The Kern County Assessor-Recorder's office sounded the identical alarm a week earlier, on Aug. 12, and other California counties pushed out their own notices around the same days. The item that popped up on a Bay Area news site was one link in a chain, not its origin.

No such IRS form exists, the officials said, and the messages are "not legitimate."

What binds the warnings together is how the lie travels. In Kern, Assessor-Recorder Laura Avila told Bakersfield television station KERO (23ABC) that the clips run on YouTube — some carrying a small on-screen tag that they are AI-generated — and are aimed broadly at seniors across several states, with on-camera figures describing breaks that don't apply in California, the station reported (external source, opens in a new tab). For a couple of weeks, she said, residents had been phoning and coming to her counter to ask how to file the imaginary form.

No one in Kern has been confirmed to lose money, which is why Avila called the notice preventive. What she is bracing for is "the next phase": operators charging seniors a fee to "file" the nonexistent form, the way phony programs are often chased by official-looking mailers.

The label works because it mimics real paperwork. The IRS does publish a Form 1098 (external source, opens in a new tab), the mortgage-interest statement, and a Form 1040-SR (external source, opens in a new tab), a large-print return for filers 65 and older. There is no 1098-SR, and no federal law that caps or freezes local property taxes for seniors. In California, those taxes are set by counties, not Washington.

The relief the scam imitates is real, and free to pursue. Owner-occupied homes qualify for a Homeowners' Exemption (external source, opens in a new tab) worth $7,000 off assessed value, claimed once on a signed form filed with the county assessor. Proposition 19 lets homeowners 55 and older, the severely disabled, and disaster victims carry their base-year value to a new home. The state also runs a Property Tax Postponement program that lets qualifying seniors defer — not erase — a year's taxes, with a lien and repayment attached. None runs through a federal form, and none freezes a bill outright.

The through-line from every county office is the same: tax staff don't cold-call for Social Security numbers or birthdates, and legitimate exemptions are claimed on signed forms filed with the county. If a video says otherwise, call your own assessor — in San Francisco, the Office of the Assessor-Recorder — not the number on the screen.