Sacramento Property Tax Calculator: Your Yearly Tax and Supplemental Bill

How Much Are Property Taxes in Sacramento County?

Plan on about 1.25% of your purchase price per year. On a $600,000 home, that's about $7,500 a year, or $625 a month in your payment. Your bill is built in layers:

• The 1% base. Prop 13 sets the base rate at 1% of your assessed value. Your assessed value starts at the home's market value when you buy, which is usually your purchase price.
• Local voter-approved bonds. In Sacramento County, the 1% plus bonds runs about 1.04% to 1.30% depending on where the home is, and most homes fall between 1.05% and 1.19%, based on the county's 2025-26 tax rate book.
• Special assessments. Flat yearly charges for things like sewer, flood protection, street lights, and parks.
• Mello-Roos, if any. Special taxes in some newer neighborhoods, added on top of everything else.

These rates change every year.

The 1% base stays put, but the county resets the bond part every July as bond payments change and voters pass new ones. Your taxable value can't go up more than 2% a year, but because the bond part moves, your actual bill can change by a little more or a little less than 2%. Special assessments depend on the street, and some homes have none. So 1.25% is a good planning number: give or take, some homes come in under it and some over. Mello-Roos is not included in the 1.25%. If the home is in a Mello-Roos district, enter that amount in its own box in the calculator.

After you buy, your taxable value rises with inflation, never more than 2% a year. It resets only when the home sells again or when you add new construction.

What Is a Supplemental Tax Bill in California?

A supplemental tax bill is the county catching up after you buy. It charges the difference between the seller's old assessed value and your purchase price, for the months left in the tax year. The tax year runs July 1 to June 30.

Regular bills are set once a year, based on the value the county had on January 1. So right after you buy, your bills still look like the seller's. The supplemental bill closes that gap.

• It starts the first of the month after you close and runs through June 30.
• Close between January and May, and you get two supplemental bills: one for the rest of this tax year and one for all of next tax year. Close between June and December, and you get one.
• It comes to you, not your lender. The county doesn't send your lender a copy, and your impound account won't pay it automatically.
• Its due dates depend on when it's mailed, so they may not match the usual December and April deadlines. The dates are printed on the bill.
• If you paid less than the value the county had on the books, you get a refund instead.

How Long Does a Supplemental Tax Bill Take in Sacramento County?

Plan on 6 months or more after closing. Sacramento County's own guidance says six to nine months is normal, and some take a year or longer. The bill passes through four county offices, in order:

1. The County Recorder records your deed the day you close.
2. The Assessor sets the new value and mails you a Notice of Supplemental Assessment. That notice is not the bill.
3. After a 30-day review window, the Auditor-Controller figures out what you owe.
4. The Tax Collector mails the bill, usually within about 60 days of the notice.

That's not a discount. It's a delay.

Until then, your bills look like the seller's. Set the money aside starting the month you close, so the bill is already covered when it lands.

What Does a Supplemental Tax Bill Look Like on a Real Purchase?

Say you buy a $600,000 home in Sacramento and close in November 2026. The seller was paying $3,400 a year in property tax.

• Your new yearly tax: about $7,500 (1.25% of $600,000).
• The yearly difference from the seller's bill: about $4,100.
• Your supplemental bill: about $2,400, covering December 2026 through June 2027 (7 months).
• When to expect it: around May 2027 or later.
• What to set aside: about $400 a month for 6 months.

Close in March instead, and you'd get two bills: about $1,000 for April through June, then about $4,100 for the full next tax year.

Do New Builds in Sacramento Have Mello-Roos or Other Liens?

Many do. New developments often carry Mello-Roos special taxes (Community Facilities Districts) or other assessment liens. They stay with the property and pay for the roads, parks, and services a new neighborhood needs. Every build is different, and the amount sits on top of the 1.25%.

• The builder has to give you a Notice of Special Tax before you sign. Read it closely.
• Ask three things: how much per year, how much it goes up each year (2% is common, some more), and when it ends. Some never do.
• When you close, the county may have only the lot, or a partly built house, on the books. Your first bills can look tiny, and the supplemental bill makes up the difference. On a new build, that bill can be large.

Moving to Sacramento From Another State? What's Different?

California taxes your purchase price, not a yearly reappraisal. Your taxable value can rise no more than 2% a year while you own the home, so your bill doesn't jump because the neighborhood got more expensive.

• Bills are mailed once a year, by November 1, and paid in two halves. The first is late after December 10. The second is late after April 10.
• Expect the supplemental bill. Many people moving here have never had one, so it catches newcomers off guard.
• Watch for the homeowners' exemption form. The county mails it after you buy. It takes $7,000 off your assessed value, about $70 to $85 a year. Send it back within 30 days of your Notice of Supplemental Assessment and it counts on your supplemental bill too.

Selling and Moving Out of State? What Should You Know?

At closing, escrow splits the current tax bill between you and the buyer, by the day. After that, new bills belong to the buyer.

• If you bought in the last year or so, your own supplemental bill may still be on its way. Keep your mailing address current with the county so it reaches you.
• If you are keeping the house as a rental, tell the Assessor so they remove your homeowners' exemption.
• If you are moving somewhere else in California and are 55 or older, Prop 19 may let you bring your low tax value with you. See Prop 19 in Sacramento. If you are looking at a 55+ community, see the 55+ communities around Sacramento.

Get the Exact Numbers on a Specific House

Send me the address. I'll pull the current assessed value, any Mello-Roos, and the tax rate for that parcel. I'm a real estate broker and a mortgage broker, so when you use us for both, the tax goes into your monthly payment from our first conversation. Call or text (916) 549-3131, or send me a message.

Frequently Asked Questions

The numbers on this page are estimates for planning, not a tax bill. Actual property taxes depend on the parcel's tax rate area, special assessments, exemptions, and the value the Sacramento County Assessor sets. This page is general information, not tax or legal advice. Sources: Sacramento County Assessor, Sacramento County Department of Finance, and the California State Board of Equalization. Talk with your CPA about your own situation.