Dear Clients,

      We hope you had a happy new year and are staying safe and healthy. The COVID-19 pandemic has affected our everyday lives, and as the country slowly begins to reopen we are hopeful that we can begin to operate as normal. We would like to thank all the doctors, nurses, and essential workers working tirelessly to provide us with the healthcare and services we need.

      Like many businesses, we need to make necessary changes to keep our doors open during this pandemic. Our employee’s and client’s health and safety is our number one priority. We are providing email and drop off services for our clients who prefer not to have an in-office appointment.

      For in-office appointments, we ask that our clients wear a face mask at all times during their appointment. We are providing hand sanitizer throughout our offices and disinfecting frequently touched surfaces throughout the day and after every appointment. We also need to limit occupancy to allow for social distancing therefore the only people allowed into the appointment will be the taxpayer and their spouse (Only the people who need to sign). Unfortunately, we will not allow children into the waiting area. Please make the necessary arrangements for childcare if you have an in-office appointment with us.

Thank you for your business for the last 30 years and we hope to serve all your tax accounting needs this year.




Sierra Tax Service





We are open year-round and offer:

  • Individual Tax Preparation

  • Corporation Tax Preparation

  • Notary Public

  • Payroll

  • Bookkeeping

  • Tax Consulting


Please DO NOT CALL our office for information about your stimulus payment. We do not have that information. Contact the IRS at https://www.irs.gov/coronavirus-tax-relief-and-economic-impact-payments

We will not answer any questions related to stimulus payments and will direct you to the website above.

If you received a Refund Transfer check at our office, that means your stimulus payment will be MAILED to your home address. 

Thank you. 



Please call us at (909) 865-2921 or click the link below. For appointments with Victor Sr. or Marco, please call our office.


Sierra Tax Service has been family owned and operated since 1986. We offer fast and reliable services year-round.

Here at Sierra Tax Service, we offer you trustworthy and high quality services at affordable prices. Have peace of mind knowing that your taxes and your business will be taken care of by our fully-trained and licensed professionals. All our preparers are licensed, bonded, and registered with CTEC and the Internal Revenue Service. 


Meet Our Family:

Victor M. Sierra

Jose L. Sierra  

Marco A. Sierra

Lupe F. Gonzalez

Blanca E. Sierra

Ruby M. Sierra

Monica Sierra     

Jasmine Sierra

Victor M. Sierra, Jr.

Lizbeth Sierra

Natalie Sierra


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271 & 275 E. Monterey Ave

Pomona, CA 91766


Tel: (909) 865-2921

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