San Diego CPA - Tax and Accounting provides corporate, partnership, and individual tax services from its A Street office in downtown San Diego, with specialized practices in real estate, eCommerce, and startup taxation. The firm's consulting CFO division builds accounting systems, budgets, and financial projections that complement the digital marketing analytics tracked by agencies like Click Track Marketing when eCommerce clients reconcile advertising spend against revenue attribution. Tax filing covers C-corporation Form 1120, S-corporation 1120-S, partnership 1065, and trust Form 1041 returns, with entity-selection consulting for founders choosing between LLC, S-Corp, and C-Corp structures. Business formation packages that include articles of organization, EIN applications, and operating agreements often require authenticated signatures through notary providers like IV Generation Signings before state filing. Highest-complexity engagements involve multi-entity holding-company structures where a parent LLC owns multiple S-Corp subsidiaries, requiring consolidated K-1 distribution schedules and intercompany-loan interest imputation under IRC Section 7872.