IRS offices in California — Taxpayer Assistance Centers + ITIN appointments

IRS offices in California

The IRS operates Taxpayer Assistance Centers (TACs) for in-person tax services. California has 27 TACs.

TACs handle:

• ITIN applications (Form W-7) — many TACs are designated as Certifying Acceptance Agents
• Identity verification for tax returns
• Account problems and balance-due payments
• Tax law questions (limited; most are routed to phone or IRS.gov)
• Tax form pickup (walk-in for forms only)
• Prior-year returns assistance

⚠️ All TAC visits require an appointment. Call the local office below OR the IRS appointment line at 844-545-5640.

IRS Taxpayer Assistance Centers in California

27 IRS TACs listed for California. TACs handle in-person tax services including ITIN applications (Form W-7), identity verification, account problems, and tax-return assistance for prior years.

How to schedule an IRS TAC appointment in California

1. Choose the office most convenient for you above
2. Call the office number OR the central appointment line: 844-545-5640
3. Explain the reason for your visit (W-7 ITIN, identity verification, etc.)
4. Schedule 2-4 weeks in advance during peak tax season (Jan-Apr)
5. Confirm what original documents you must bring

Related procedural information

• ITIN — individual taxpayer ID without SSN — the federal procedure your TAC will help with
• Free tax prep (VITA + TCE) in California — separate volunteer sites for low-income filers
• State income tax obligations in California — state filings happen separately from IRS
• USCIS Form W-7 reference — federal forms library
• Find an immigration attorney — for cross-border tax + visa interactions

Last verified: 2026-05-27. Source: IRS Taxpayer Assistance Center directory. General procedural information — not legal or tax advice. Always verify office hours and services before traveling.

Recent IRS appointment and ITIN context (2025-2026)

IRS Taxpayer Assistance Centers (TACs) operate by appointment only — call 1-800-829-1040 to schedule. For ITIN W-7 in-person processing, only designated Certifying Acceptance Agent TACs can verify original passport documents (saves you mailing your passport to Austin, TX). The ITIN application fee is $0 (no IRS fee); third-party Acceptance Agent fees range from $50-$300 per applicant when not using a TAC directly.

H.R.1 / OBBBA effective 2026-05-29 did NOT change Form W-7 ITIN procedures, but the IRS publishes ITIN processing time updates monthly. Current processing time: approximately 7 weeks for new W-7 applications mailed to Austin Service Center. Renewals required for ITINs not used on a federal tax return for 3 consecutive years. The 2024 IRS Strategic Operating Plan allocated $80 billion in funding (later reduced) — TAC hours and locations may shift annually based on Congressional appropriations.

For free tax preparation: 11,000+ VITA (Volunteer Income Tax Assistance) sites nationwide serve households earning under approximately $64,000. TCE (Tax Counseling for the Elderly) sites serve taxpayers 60+. Find sites at irs.treasury.gov/freetaxprep or call 1-800-906-9887. VITA volunteers are IRS-certified annually and can prepare Forms 1040, 1040-SR, 1040-NR (limited), Schedule A, B, C (simple), EIC, Child Tax Credit, ACTC, education credits.

USCIS Form W-7 and the IRS Form 1040 series interact via Schedule 8812 (Credits for Qualifying Children and Other Dependents) — ITIN-only filers can still claim the $2,000 Child Tax Credit per qualifying child (US citizen or LPR child with SSN required). The Additional Child Tax Credit refundable portion is $1,700 for tax year 2025. Form 1040-NR filers face different rules; consult a TAC or VITA volunteer for nonresident-alien status questions.