Thanh Nguyen Income Tax occupies Suites 201 and 202 at 4776 El Cajon Boulevard in College Area, San Diego, operating from the international commercial corridor that runs east from SDSU toward City Heights. The office runs under owner Thanh Huu Nguyen, an IRS-registered tax preparer and a participant in the IRS Annual Filing Season Program, which requires continuing-education credits in federal tax law updates, ethics, and filing-season compliance each year. The office handles individual and small-business returns with an emphasis on Vietnamese-speaking and bilingual households along the El Cajon Blvd stretch, and the second-floor location at the Euclid Avenue intersection draws walk-in traffic from the surrounding 92115 ZIP. Real estate transaction reporting — including Schedule E rental income, 1031 exchange documentation, and capital-gains calculations on property sales — is a recurring workload, and agents at Fine & Coastal Real Estate refer clients for closing-year tax implications. Bookkeeping services cover monthly bank reconciliations and quarterly payroll filings for sole proprietors and single-member LLCs operating in the College Area small-business corridor. The practice processes electronic filings for both federal and California state returns, and amended-return preparation addresses prior-year errors or missed deductions. Vehicle registration and title-transfer paperwork routes through nearby administrative providers including The Tag Shop - DMV San Diego, which handles the DMV filings that often coincide with tax-season vehicle purchases. Taxpayers on the east side of the College Area corridor use the office for tax-planning consultations covering estimated payment scheduling, standard-versus-itemized deduction analysis, and dependent-credit qualification reviews.