We start with the rate table for the date of the sale, not with the loudest sentence in the email. If the table still shows 6.25 plus 1.5 plus the transit half, that is the stack we accrue. A future election does not rewrite a past Saturday.
If the election passed and the effective date is in a later quarter, the months before that date stay on the old stack. Cutting the year in half inside one journal entry is how both quarters become wrong.
Bring the file, the date someone claims, and one receipt from before and after that date. The two receipts are usually enough to see whether the register moved. The table says whether the register should have moved.
Relief from a notice is a separate conversation, and it starts after the records exist. This page will not tell you the balance shrank because an election story sounds hopeful.
Keep the council calendar and the tax calendar in two different notes. May elections for two year terms will keep arriving whether or not a sales tax question is on a ballot. Someone who books a fresh sales tax rate every May will miss in most years and stay busy in every one of them.
If the file is only a question from a buyer, a lender, or a new partner, answer it with the current stack and the date that stack has been in effect. The transit half dates from 1 January 2004. The city piece and the state piece are the other two lines. A question that wants a story about a vote can be answered with those lines until a real proposition exists.