Find the right Solano tax bill before you send the payment
From Fairfield and Vacaville to Vallejo, Benicia, Dixon, Suisun City and Rio Vista, Solano County property-tax bills route through the County Treasurer–Tax Collector–County Clerk. The Tax Collector collects the bill; the Assessor determines taxable value; the Auditor-Controller applies rates and charges.
Use this guide to search by PIN or property address, choose the right secured, supplemental or unsecured bill, understand current office and mailing rules, and avoid a late-payment problem caused by a wrong account or delayed postmark.
What does the Solano County Tax Collector handle?
The Tax Collector Division bills and collects Solano County property taxes for land, houses, businesses, boats and other taxable property. It handles current secured taxes, supplemental taxes, unsecured taxes and redemption or prior-year delinquent accounts.
You need a bill, current amount due, payment posting, duplicate tax bill, prior-year balance, installment-plan information or tax-sale/redemption direction.
The issue is assessed value, ownership, mailing address, an exemption, disaster relief or why property was placed on the assessment roll.
The question involves how the tax amount was extended from the assessment roll, certain special assessments, school bonds or tax allocation.
How to search and pay Solano County property taxes online
Solano County’s Public Access system lets taxpayers find property-tax bills using a PIN/Assessor Parcel Number or a property address. Electronic payment options listed by the County include e-check, debit card and credit card.
Use the official Solano County link to reach Public Access. This reduces the chance of landing on an unrelated payment service or a similarly named California tax site.
The PIN is a 10-digit number found on a regular tax bill. For property-address searches, the portal requires at least three characters in the street-name field.
The County specifically advises that less information often returns better results. Try the street name without directional letters or street-type abbreviations such as ST, AVE or LN.
Do not assume every result is the annual secured bill. A parcel can have annual secured taxes plus one or more supplemental bills, while personal property can use a different account identifier.
Confirm the parcel, property location, tax year, bill type, installment and any penalty before submitting payment.
The portal lists debit card, credit card and e-check. Processing fees may be added at payment time, so review the checkout screen before authorizing the transaction.
The County says an electronic receipt is emailed after payment. Keep the receipt plus your bank or card record until the tax account reflects the payment correctly.
Solano County Tax Collector address, phone, email and hours
The public counter is in downtown Fairfield at the County Government Center complex. If you are driving in from Vallejo, Vacaville, Benicia or Dixon near a tax deadline, the online route can save a long counter line.
| Detail | Verified information | Practical use |
|---|---|---|
| Office | Solano County Treasurer–Tax Collector–County Clerk, Tax Collector Division | Property-tax billing, payment and delinquency questions. |
| Officeholder | Charles A. Lomeli | Treasurer–Tax Collector–County Clerk. |
| Physical address | 675 Texas Street, Suite 1900, Fairfield, CA 94533 | Counter service and hand-delivered documents. |
| Phone | 707-784-7485 | Bill, payment, redemption and Tax Collector questions. |
| TTCCC@solanocounty.gov | Non-urgent written questions. Do not email banking credentials. | |
| Counter hours | Monday-Friday, 8:30 a.m.-4 p.m. | Verify County holidays before visiting. |
| Telephone hours | 10 a.m.-12 p.m. and 1-3 p.m. | Calling at 8:30 a.m. does not mean the tax phone line is open. |
Do not confuse the payment mailing address with the Fairfield office
Solano County’s most recent secured-tax mailing notice lists a payment remittance P.O. Box in Los Angeles. That can look odd if you expected a Fairfield address, but it is an official remittance address published by the County.
Solano County Tax Collector
PO Box 51094
Los Angeles, CA 90051-5394
Solano County Tax Collector
675 Texas Street, Suite 1900
Fairfield, CA 94533
The County also lists a drop box at the Fairfield office. If timing is close to a delinquency date, understand the County’s postmark rules before choosing ordinary mail.
Secured, supplemental and unsecured taxes are not interchangeable
Usually tied to real property such as land and buildings. The annual secured bill is separate from later supplemental assessments.
A separate bill can result after a change in ownership or qualifying new construction. Receiving a regular annual bill does not mean a supplemental bill has been paid.
Can apply to taxable property such as business personal property, boats and other assessments not secured by real estate in the same manner as the annual secured roll.
Use the current Solano bill for the 2026-27 tax cycle
As of this page’s September 15, 2026 source review, the latest annual secured-bill news release surfaced on the County website is still the FY2025/26 notice. That notice said bills were mailed in mid-October, with installments due December 10, 2025 and April 10, 2026.
The County applied a 10% penalty to FY2025/26 installments received or postmarked after those delinquency dates. Failure to receive the bill did not exempt the taxpayer from timely payment or penalty.
The date you drop tax mail off may not be the USPS postmark date
Solano County published a specific warning after a USPS postmark-rule change took effect December 24, 2025. For machine-applied postmarks, the postmark can reflect the first automated processing operation at a USPS processing facility rather than the date you physically handed over or deposited the envelope.
A payment received after the delinquency date without a qualifying timely postmark can be treated as late. Mailing on the final day therefore carries more risk than many taxpayers expect.
The County notes that metered mail, pre-canceled stamps, automated-postal-center stamps and permit-imprint mail may not receive the kind of USPS postmark taxpayers assume they will.
Safer USPS evidence options listed by Solano County
Tax Collector vs Assessor vs Auditor-Controller in Solano County
Solano’s own property-tax system page lays out the workflow: the Assessor creates the assessment roll, the Auditor-Controller applies rates and charges, and the Tax Collector mails and collects the resulting bills.
| Your task | Correct office | Why |
|---|---|---|
| Pay a bill or check payment status | Tax Collector | The Collector bills and collects the property tax. |
| Challenge assessed value | Assessor / assessment appeal route | The Assessor establishes taxable value; the Tax Collector does not. |
| Change property mailing address | Assessor | The County routes valuation-notice and property-tax mailing-address changes through assessment records. |
| Ask about exemptions | Assessor | Homeowner, disabled-veteran, church/welfare and similar exemptions affect assessment. |
| Question a school bond or special assessment | Auditor-Controller / levying agency | Those charges are not simply created by the Tax Collector. |
| Prior-year delinquent balance | Tax Collector | The Tax Collector handles redemption and prior-year delinquent collection. |
707-784-6210 · Assessor@solanocounty.gov
675 Texas Street, Suite 2700, Fairfield, CA 94533
Published hours: Monday-Friday, 9 a.m.-4 p.m.
707-784-6280
675 Texas Street, Suite 2800, Fairfield, CA 94533
Published hours: Monday-Friday, 8 a.m.-5 p.m.
Solano County delinquent-tax installment plan: what the form actually requires
Solano County provides an Agreement to Start an Installment Plan on Prior Year Delinquent Taxes. It is not a one-click online enrollment.
The County provides an electronic form/library entry, but electronic filing by itself does not finish the setup.
The County specifically requires the completed agreement to be printed and signed.
The initial payment must be at least 20% of the prior-year delinquent amount. Contact the Tax Collector for the account-specific number rather than guessing from an old bill.
The current County form listing states a $60 processing and maintenance fee to initiate the installment plan. Recheck the current fee schedule before submitting because County fees can change.
Follow the County’s current instructions. Keep a copy of the signed agreement and payment evidence.
Property Tax Postponement and Solano County exemptions
Homeowners who are seniors, blind or have qualifying disabilities may want to review California’s Property Tax Postponement program. The program is administered by the California State Controller’s Office rather than by the Solano County Tax Collector.
Solano County says PTP applications are accepted from October 1 through February 10 each year. Eligibility rules apply, so postponement should not be assumed simply from age or disability status.
The County also tells taxpayers to check with the Assessor about exemptions such as the Homeowners’ Exemption, 100% Disabled Veterans’ Exemption and qualifying Church/Welfare exemptions.
Solano County tax sale status: check the date before you treat a listing as active
The County conducts sales of tax-defaulted property under California law. The County’s general-information page says tax sales are generally held in May or June through an online auction service, but dates and available parcels must be verified for each sale.
The County page still references a June 17-18, 2026 tax-sale reoffer. That date has already passed as of this article’s September 15, 2026 review. It should not be presented as the “next” auction.
If your parcel appears in a tax-sale process, contact the Tax Collector immediately for account-specific redemption instructions and deadlines.
Verify the sale on the County page before registering or transmitting money. County materials warn bidders to research title, location, condition and surviving obligations themselves.
A prior parcel list, archived search result or expired auction date is not proof that a property is currently available for sale.
Solano County e-billing can reduce the “I never saw the bill” problem
The Public Access portal includes an e-billing subscription service. Taxpayers can enroll for electronic tax-bill delivery and manage the email address used for the subscription.
Electronic delivery is useful, but it should not replace account monitoring around expected tax-bill season. Email filtering, address changes and escrow transitions can still cause confusion.
Common Solano County tax problems and what to do next
Use fewer fields. Enter at least three street-name characters and remove street suffixes or directional letters before assuming the property is missing.
Use the 10-digit PIN search. Enter it exactly as shown on the tax bill and verify the resulting property before paying.
Personal-property account numbers may be 13 characters and include letters. Use the account format shown on the actual bill.
Receiving a bill does not automatically mean escrow failed. Compare the bill to your lender’s escrow record, but do not ignore a supplemental bill simply because the lender pays the annual secured bill.
Search online and contact the Tax Collector. The County’s prior annual notice explicitly warned that failure to receive a bill does not excuse timely payment or penalties.
Paying and assessment are separate issues. Contact the Assessor for valuation or exemption questions instead of asking the Tax Collector to alter the assessed value.
Check the actual USPS evidence. Under the newer machine-postmark rules, the day you dropped the envelope off may not equal its official postmark date.
Contact the Tax Collector for a current redemption amount before sending the amount shown on an old statement.
Call the Tax Collector immediately. Do not rely on an archived search snippet or expired auction calendar.
Six checks that prevent most wrong-account payments
Official Solano County links to use when you are ready to act
Use the live County pages for account balances, processor fees, newly published tax-year deadlines, office closures, parcel status and tax-sale updates.
Solano County Tax Collector frequently asked questions
What is the Solano County Tax Collector phone number?
Call 707-784-7485. The County currently lists Tax Collector telephone hours as 10 a.m.-noon and 1-3 p.m., Monday through Friday.
Where is the Solano County Tax Collector office?
The Tax Collector is at 675 Texas Street, Suite 1900, Fairfield, CA 94533. Public counter hours are currently Monday through Friday from 8:30 a.m. to 4 p.m.
How do I search Solano County property taxes?
Use the County’s official Public Access Tax Search. Search by the 10-digit PIN/Assessor Parcel Number or by property address. For address search, enter at least three characters of the street name and try removing suffixes or directional letters if no result appears.
Can I pay Solano County property tax online?
Yes. The County Public Access portal lists e-check, debit-card and credit-card payment methods. Processing fees may apply, so review the current fee before approving payment.
What is the difference between the Solano Tax Collector and Assessor?
The Assessor identifies taxable property, establishes assessed value and applies exemptions. The Tax Collector mails property-tax bills and collects the resulting taxes. Assessment disputes do not belong to the Tax Collector.
What if I never received my Solano County tax bill?
Search the live tax portal and contact the Tax Collector for a bill copy or amount due. The County’s prior annual notice states that failure to receive a bill does not exempt a taxpayer from timely payment or penalties.
What address do I use to mail a Solano County tax payment?
The latest annual secured-tax notice reviewed lists Solano County Tax Collector, PO Box 51094, Los Angeles, CA 90051-5394 as the remittance P.O. Box. Because payment addresses can change, verify the address printed on your current bill before mailing.
Why should I be careful with the postmark when mailing close to the deadline?
Since December 24, 2025, a USPS machine-applied postmark may reflect the first automated processing operation rather than the date you deposited the envelope. Solano County recommends options such as a manual postmark, Postage Validation Imprint, Certificate of Mailing or certified/registered mail when mailing evidence matters.
Can I make an installment plan for old delinquent Solano County property taxes?
Solano County provides a prior-year delinquent-tax installment-plan agreement. The current form listing says the signed application must be completed with an initial payment of at least 20% of the prior-year delinquent amount plus a $60 processing and maintenance fee. Verify current terms with the Tax Collector before starting.
Does Solano County offer property-tax help for seniors or disabled homeowners?
The County points eligible taxpayers to the California State Controller’s Property Tax Postponement program. It also recommends contacting the Solano County Assessor about qualifying exemptions, including homeowner and disabled-veteran exemptions.
When is the next Solano County tax sale?
The County page reviewed in September 2026 still references a June 17-18, 2026 reoffer, which has already passed. Check the official Tax Sale General Information page for the next announced auction before registering, bidding or sending money.
Can I sign up for electronic Solano County tax bills?
Yes. The Tax Collector Public Access service includes an e-billing subscription option where taxpayers can enroll for electronic delivery and manage their email address.
The TaxCollectors.org Editorial Team researches and reviews U.S. tax collector offices, property tax procedures, payment resources, deadlines, and official government links. TaxCollectors.org is an independent information publication operated by Quarks Systems Global Solutions.