Montero Tax & Accounting in Chula Vista provides bilingual tax preparation, payroll processing, and bookkeeping from Suite 8 on Main Street along the Broadway corridor. The firm handles both personal and corporate returns alongside FBAR and BE-12 filings for cross-border clients, adding IRS compliance work to a South Bay tax preparation corridor that also includes 360 Bookkeeping + Tax Solutions - Enrolled Agents. Services extend beyond standard tax work to include ITIN applications, business incorporation filings with the California Secretary of State, certified translations, and apostille processing. All returns are prepared and signed by authorized preparers holding valid PTIN credentials issued by the Internal Revenue Service. Spanish-language support runs through every service line, and the firm maintains a second office in Tijuana for clients managing obligations under both U.S. and Mexican tax codes—a dual-jurisdiction workflow that also pairs with Cal Notary Service for document authentication. Complex engagements include multi-entity corporate structures requiring consolidated California Form 100 filings coordinated with federal Form 1120 submissions.