sdttc.com
SDTTC.com is the San Diego County Treasurer-Tax Collector website, where people can find tax bills, make payments, learn about county treasury work, and find tax-related services.
What is SDTTC.com used for?
The main job of SDTTC.com is to give people online access to services from the San Diego County Treasurer-Tax Collector.
The site focuses heavily on property taxes and provides tools for finding and paying several kinds of tax bills.
These include secured, unsecured, defaulted, supplemental, and escape tax bills.
The site also covers topics such as transient occupancy taxes, tax auctions, mobile-home tax clearance, cannabis tax administration, and prior-year property taxes.
This makes the website more than a simple payment page.
It works as a central online service point for many tax and treasury tasks handled by San Diego County.
How can people search for a tax bill?
The website makes its basic process easy to understand with three actions: search, select, and pay.
For many property tax bills, a person can search with a parcel number or the current mailing address.
For an unsecured tax bill, such as one connected with a business, boat, or airplane, the site tells users to search with the four-digit year and six-digit bill number.
After finding a bill, users can view it and choose the installment they want to place in their payment cart.
The final step is checkout and payment.
The site warns that a transaction is not finished until the user submits it and receives a receipt marked as successful.
That small detail matters because simply reaching the checkout screen does not prove that a tax payment went through.
What tax information is available in 2026?
SDTTC.com currently says the 2026–2027 tax roll is available for unsecured, defaulted, supplemental, and escape tax bills.
It says annual secured tax bills for 2026–2027 are expected to become available in mid to late September.
The website also provides information about older or existing tax obligations, which can help people understand what type of bill they need to find.
Because tax-roll availability changes during the year, the notices on the home page are important.
People should check the current notice before assuming that a new annual bill is already searchable.
Can people pay property taxes online?
Yes, and online payment is one of the biggest parts of the website.
SDTTC promotes e-check as a free, fast, and easy payment method.
The site also distinguishes its own electronic payment process from online bill payment offered by a person's bank.
An older county information sheet explains that bank bill-pay services may create and mail a paper check, which can take time to arrive.
That distinction can be important near a tax deadline.
SDTTC also publishes separate instructions for organizations making bulk property-tax payments, including check and bank-wire procedures.
What else can people do on SDTTC.com?
One useful feature is the site's unclaimed-money search.
The Treasurer-Tax Collector says its office returns thousands of dollars in unclaimed money to the correct owners each year.
The website gives people a way to search the list and follow instructions if they find their name.
There is also a large information section covering treasury operations.
Visitors can find financial reports, Treasury Oversight Committee information, treasury forms, investment-pool FAQs, and a wire-access request portal.
Other pages explain payment plans, penalty cancellation, tax forms, online security, office locations, and electronic notifications.
Is SDTTC.com a legitimate website?
The available evidence strongly indicates that SDTTC.com is the website used by the San Diego County Treasurer-Tax Collector.
The site lists the office at the San Diego County Administration Center at 1600 Pacific Highway in San Diego and provides county contact information.
Other San Diego County web services also point users toward SDTTC.com for Treasurer-Tax Collector functions.
A third-party domain review also describes the domain as established and using a valid SSL certificate, although third-party trust scores should never replace checking the address carefully before entering payment information.
For tax payments, the safest approach is to navigate directly to SDTTC.com and confirm that the browser is on the expected secure domain before entering personal or payment details.