EQ Quiroz Tax Service in Chula Vista handles bookkeeping and tax preparation from its Broadway suite in the southern stretch of the commercial corridor near the Palomar Street intersection. Incorporated in 2018 as ESA Tax Services Inc, the practice prepares individual and small-business returns with onsite service capability, and clients needing notarized IRS authorization forms coordinate through offices such as R B Newlan Notary Public for power-of-attorney and Form 2848 filings. Bookkeeping workflows encompass monthly general-ledger posting, expense categorization, and accounts-receivable tracking for sole proprietors and micro-businesses operating along the Broadway and Main Street corridors. Small-business owners who carry commercial-auto and general-liability policies synchronize their fiscal-year-end documentation with carriers such as Freeway Insurance to ensure deductible premium payments align with Schedule C expense reporting. Filing scope covers standard W-2 individual returns through Schedule C businesses with quarterly estimated-tax calculations on Form 1040-ES and California Form 540-ES underpayment-penalty worksheets.