A tax bill that arrives after closing catches many Long Beach buyers off guard. Here's how it works, based on what the county says, and what to do before you close.
What a supplemental tax bill is
When a California property changes hands, the county reassesses it at its new value. Because assessed values generally rise slowly under Prop 13 until a sale, the previous owner's assessed value is often well below the price you paid. The supplemental bill covers the difference for the rest of that tax year.
In LA County, the bill is based on the new assessed value minus the prior assessed value, less any exemptions, and the general tax rate is 1%. Three points from the county's property tax portal are worth knowing:
- It is separate from your annual bill. Both must be paid by the dates shown on each bill.
- It goes to the owner of record at the mailing address on file with the Assessor. Another county's assessor notes that mortgage servicers don't receive supplemental bills, so ask your lender how yours will be handled.
- You may get two. If the ownership change happens between January 1 and May 31, you can receive one bill for the rest of the current fiscal year and one for the next.
A simple example
These numbers are illustrative only, not a quote. Say you buy for $900,000 and the previous owner's assessed value was $300,000. The net increase is $600,000. At a 1% rate that is $6,000 for a full year. If about half the tax year remains, the supplemental bill would be roughly $3,000, before any voter-approved bonds, exemptions or the county's own proration method.
When will it arrive?
There's no set date. LA County's property tax portal doesn't give a mailing timeline, and the Sacramento County Assessor notes there is no statutory deadline and that reappraisal can take up to two years. Plan for the bill to arrive well after closing, and don't assume it isn't coming because you haven't seen it yet.
How to prepare
- Ask early. Ask your lender and escrow officer how a supplemental bill will be handled in your purchase.
- Set money aside. Estimate the bill with the formula above and keep that amount separate.
- Don't wait for the mail. For the annual bill, the LA County Tax Collector says not receiving a bill doesn't excuse late payment or cancel penalties, and it's wise to assume the same for a supplemental bill. Late supplemental payments carry a 10% penalty, per the county's property tax portal.
- Ask about refunds and credits. If escrow sends you a refund or credit tied to property taxes, ask your escrow officer what it covers before you spend it. It may not cover a supplemental bill.
Thinking about buying or selling in Long Beach?
Contact Anderson Real Estate Group to start the conversation.
This post is educational and is not legal or tax advice. Property tax rules and rates can change. Talk with your escrow officer, a tax professional or the LA County Assessor about your situation.
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