For bilingual tax preparation in Chula Vista's Third Avenue Village, the ATAX Downtown office provides Spanish-and-English filing services from its second-floor suite on Third Avenue between Kearney and L streets. ITIN applications and renewal filings run alongside standard 1040 preparation, and the notarization step for IRS Form W-7 supporting documents routes through nearby bilingual offices such as Notary Public Mercedes247. Part of a national franchise network operating since 1986, this location extends the ATAX model of year-round tax, bookkeeping, and payroll support to National City, Imperial Beach, and South San Diego communities. Small-business owners on Third Avenue coordinate their marketing budgets and deductible advertising expenses with Planet Marketing, then bring those categorized expenses to ATAX for Schedule C deduction optimization and quarterly estimated-tax planning. Filing complexity ranges from single W-2 returns to gig-economy filers with multiple 1099-NEC and 1099-K forms requiring self-employment tax calculation on Schedule SE and California estimated-tax penalty analysis on Form 5805.