WHO WE SERVE · LAW FIRMS & ATTORNEYS
Accounting and tax support for Ontario law firms
Brent Tucker, CPA, keeps monthly accounting and financial reporting current for solo attorneys and small firms in Ontario, California. In ZIP codes 91761, 91762 and 91764 there are 65 law offices with paid employees.
Sound familiar?
Monthly reporting for law offices with staff
Realization and collection, and the data on partner compensation, are the lines a firm with staff looks at in its monthly reporting.
Your situation isn’t on this list? Tell us about it — every engagement starts with a conversation.
How we help.
Monthly accounting and financial reporting for small law offices
Where the office already has a bookkeeper, the work is arranged around the books that person keeps. Brent works in the software you already use, or recommends a setup if you don’t have one.
The state’s trust account rules
Money a law firm holds for clients — retainers not yet earned, settlement proceeds, funds held for a transaction — is not the firm’s money. The attorney remains responsible for the trust account under the rules.
Services and starting prices.
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Law Firm Accounting
From $900/moFor solo attorneys and small law firms: monthly accounting, financial reporting, business and owner returns, tax planning and CPA consultation.
Starting prices. Your scope and price are agreed in writing before work begins.
Work directly with Brent.
Licensed CPA · 10+ years in public accounting · Member, AICPA and MICPA
Brent has served legal clients throughout his career, at a boutique firm and at a large national accounting and advisory firm.
Brent Tucker is a CPA licensed in Michigan and serves clients in other states under applicable CPA mobility provisions.
More about BrentOntario at a glance
65
law offices with paid employees in the ZIP codes 91761, 91762 and 91764 that serve Ontario
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023
26%
share of law offices with 10+ employees (estimate)
Source: estimate derived by Tucker from Census ZIP Code Business Patterns 2023; not a published figure
Tax offices for Ontario law firms
City of Ontario Business License Division
City business tax and licenses.
Phone (909) 395-2022
San Bernardino County Auditor-Controller/Treasurer/Tax Collector (ATC)
County property tax collection.
Phone (909) 387-8322
California Franchise Tax Board (income tax)
State tax and revenue agency.
Phone 800-852-5711
IRS Taxpayer Assistance Center - San Bernardino
Federal tax help in person.
290 N. D St., San Bernardino, CA 92401
Phone (909) 388-8108
Of the law offices with paid employees in ZIP codes 91761, 91762 and 91764, Tucker CPA estimates that 26% have 10 or more employees. San Bernardino County Auditor-Controller/Treasurer/Tax Collector (ATC) collects property tax in San Bernardino County, California.
City of Ontario Business License Division is the city listing, California Franchise Tax Board (income tax) is the state listing, and IRS Taxpayer Assistance Center - San Bernardino is the federal listing.
Brent Tucker, CPA, plans taxes through the year for Ontario solo attorneys and small law firms and prepares the firm's return and each owner's return in step, since client deadlines do not pause for tax season.
Source: each office's official website, checked October 16, 2026.
GET STARTED
Let's talk about your numbers.
Tell us a little about your business or situation, and Brent will reply personally. No office visit needed — meetings are by phone or video, wherever you’re based.
Call 888-762-4370 · Email brent@brenttuckercpa.com · Prefer to pick a time? Book a consultation online