Dallo Law Group on Fourth Avenue in downtown San Diego's Bankers Hill concentrates exclusively on IRS and California tax-agency disputes, staffing a team where every attorney holds at least two graduate tax credentials. The firm's IRS audit and collections defense work generates referrals from CPA practices such as Dimov Tax Specialists when standard representation escalates to federal controversy. The founding attorney is both a CPA and a Certified Tax Law Specialist designated by the State Bar of California, a dual credential held by very few practitioners statewide, and serves as adjunct professor of taxation at the University of San Diego. Tax-deferred transaction planning for business clients intersects with advisory firms like 1031 Capital Advisors when exchange-related disputes require litigation counsel with United States Tax Court standing. Practice areas include offer-in-compromise negotiations, Trust Fund Recovery Penalty defense under IRC Section 6672, EDD payroll-tax audits, and FBAR/offshore voluntary-disclosure submissions to the IRS Criminal Investigation Division. Highest-tier engagements include United States Tax Court petitions contesting six- and seven-figure deficiency notices involving complex partnership and S-corporation flow-through allocation disputes under Subchapter K of the Internal Revenue Code.