Business & S-Corp Tax in Ontario, CA
Entity returns, payroll tax, deductions, and quarterly planning.
Who needs this
LLCs, S-corps, partnerships, and sole proprietors with employees.
What it costs
Entity returns typically $800-3,000+; ongoing quarterly planning pays for itself.
The Ontario picture
Ontario taxpayers filed 86,900 returns at an average AGI of $61,067. Self-employment runs high here — 18.4% of returns include Schedule C income, which raises both complexity and the value of good help.
FAQ
How much does business & s-corp tax cost in Ontario?
Entity returns typically $800-3,000+; ongoing quarterly planning pays for itself.
Who needs business & s-corp tax?
LLCs, S-corps, partnerships, and sole proprietors with employees.
How many providers serve Ontario?
The IRS lists 406 credentialed preparers in Ontario, CA — 63 CPAs, 28 enrolled agents, and 2 tax attorneys.
Local providers
IRS PTIN data · informational, not an endorsement · see all
1st Choice Tax Preparation
SRTP
9099868600
ANGELA ABRON-HOWARD
CPA
(951) 538-8656
Patriot Tax services
SRTP
CliftonLarsonAllen LLP
(909) 985-7286
Monumental General Insurance Agency
SRTP
909-208-2587
GC Tax Solutions
9093743223
JCA Tax services
SRTP
7142248713
KEVIN ANDRADE
SRTP
909-210-4753
Andrade Tax Services
SRTP
909-730-9655