The tax strategies that reduce a bill are built throughout the year — not filed in April. Mondragon Tax & Advisory provides the bookkeeping infrastructure and tax guidance to make that possible.
No long contracts. No confusing intake forms. Just three steps to go from overwhelmed to completely covered.
Takes under 60 seconds. Set up your secure client portal and reach me directly. I handle every message myself.
Free · 60 SecondsWe talk through your situation — your business, your goals, what's been stressing you out. You'll get an honest assessment of what you need and whether this practice is the right fit.
No Pitch · No PressureOnce we're working together, you'll have a financial partner who's always looking ahead — proactive planning, clean books, and zero April surprises. Every year.
Year-Round Coverage"The best tax work happens before the deadline. Most people find that out too late."
Mondragon Tax & Advisory is a tax & bookkeeping practice based in San Diego, California, serving small businesses and individuals across California and nationwide.
I work across two primary service areas. The first is ongoing monthly bookkeeping — financial close, reconciliations, payroll, and financial statement preparation — delivered as a year-round engagement for business owners who need consistent, reliable financial infrastructure. The second is advisory-level tax preparation and planning, available as a standalone service or as an add-on to any bookkeeping engagement. Every tax return includes a structured advisory review: findings, implications, and forward-looking recommendations tailored to each client's specific situation.
I work with a range of client types: owner-operated businesses in construction and the trades, cafés and restaurants whether finding their footing or scaling up, rental property owners managing single or multi-property portfolios, investors navigating capital gains and portfolio income, and solopreneurs and self-employed service providers building sustainable operations. The common thread is clients who need more than basic compliance — they need a practitioner who understands their numbers, communicates clearly, and stays engaged throughout the year.
Brandon Mondragon, founder and principal, manages all client work directly. Flat-rate pricing, a secure client portal, and consistent direct access are standard across every engagement.
Flat monthly rates — no billable hours, no surprise invoices. Tax return services are priced separately and available to everyone.
Every return includes a personalized advisory package — specific notes, findings, and action steps tailored to the client's situation. The goal is for every client to understand exactly what was filed and why, and what they can do differently going forward.
Details that affect the client's tax picture are surfaced and explained. Details that don't apply aren't mentioned. What every engagement delivers is a thorough, precise review — and a practitioner who follows through year-round.
Final pricing is always confirmed before work begins. No surprises.
Testimonials coming soon. In the meantime, reach out directly — references are available upon request.
The principles below shape every client engagement — from the first consultation to year-round advisory work.
From the Tax Advisory Readiness Guide to a café margin calculator, these are practical resources you can put to work today. Pick one and I'll send it straight to your inbox.
Explore Free ResourcesBook a free, no-pressure consultation. We'll talk through your situation, identify exactly what you need, and determine whether this is the right fit — no sales pitch, no obligation.