Amended Returns (1040-X) in Ontario, CA
Fix a filed return — missed credits, wrong status, forgotten income.
Who needs this
Anyone who filed and later found an error or missed a credit.
What it costs
Usually a fraction of the original prep fee; refunds generally must be claimed within 3 years.
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 amended returns (1040-x) cost in Ontario?
Usually a fraction of the original prep fee; refunds generally must be claimed within 3 years.
Who needs amended returns (1040-x)?
Anyone who filed and later found an error or missed a credit.
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