Supplemental and escape bills: the envelope that arrives a year later

When a reassessment happens, the county doesn't just change future bills — it issues a supplemental assessment covering the difference from the date of death forward. Because assessor offices run behind, this bill often lands 6–18 months after the death, sometimes after heirs have budgeted as if the old tax amount would continue.

If the assessor discovers a reassessable event even later, they can issue escape assessments reaching back up to four years (more if a required filing was never made).

Practical points: the bills are real and accrue penalties if ignored; they can usually be paid in installments; and if you believe the reassessment itself is wrong — the exclusion should have applied, or the market value used is too high — there are appeal windows with hard deadlines. Open every envelope from the county, even when it's painful mail to read.

General education, not advice — verify anything you’ll rely on with a CPA or estate attorney.