California Business Services Companies
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California Business Services Companies

California is a hub for Business Services, attracting top talent, fostering innovation and utilizing advanced technology to create a thriving ecosystem for businesses. It is a go-to destination for companies seeking cutting-edge services and solutions. Discover the Top 51 Business Services Companies in California.

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Average project size: $10,000 to $25,000 Average hourly rate: $50 - $99
  • USA Book Promoters
  • Book Writing Center
  • ALLSTARSIT
  • AI bees
  • Alcor
  • Wing Assistant
  • Stellar Staff
  • Alert Communications
  • 310 Creative Inc.
  • Telecom, Inc.

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Premier Business Services Companies in California

51 Companies Showing Top 50 Business Services Companies In California Updated on December 12, 2025 Reviewed by: ITProfiles Team
Every agency on ITProfiles is evaluated for expertise and client feedback to help you make informed decisions. See how we rank companies
  • USA Book Promoters

    USA Book Promoters

    Claimed
    Los Angeles, United States
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    Book Publishing and Writing

    USA Book Promoters delivers accounting services tailored to authors and small publishers, helping manage royalties, expense tracking, and financial visibility so creatives can focus on writing while keeping numbers under control.
    Business Services, Accounting
    • Founded in 2014
    • 2001-5000 Members
    • $150 - $199/hr
    • $75,000 to $100,000
    usabookpromoters.com homepage

    usabookpromoters.com homepage

    Why Hire USA Book Promoters?

    • Familiarity with the publishing sector’s revenue-streams such as royalties and advances.
    • Handles bookkeeping and expense tracking specific to book marketing and production costs.
    • Provides financial transparency and reporting suitable for small-scale author enterprises.
    • Aligns accounting workflows with marketing campaigns and budget tracking.
    • Offers consolidation of bookkeeping with promotional expenditure for better control.
  • Book Writing Center

    Book Writing Center

    Claimed
    San Francisco, United States
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    Book Writing Center

    Book Writing Center, based in San Francisco, offers professional human resources support designed for project-based and creative teams.
    Business Services, Human Resources
    • Founded in 2014
    • 2001-5000 Members
    • $200 - $300/hr
    • $100,000 to $250,000
    bookwritingcenter.com homepage

    bookwritingcenter.com homepage

    Why Hire the Book Writing Center?

    • Strong understanding of HR needs specific to creative and editorial industries.
    • Experience in managing remote and contract-based teams effectively.
    • Emphasis on clear communication, documentation, and performance tracking.
    • Ideal for organizations seeking HR support that adapts to flexible, content-oriented teams.
    • Reliable administrative backing that helps free creative departments from routine personnel tasks.
  • ALLSTARSIT

    ALLSTARSIT

    San Francisco, United States
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    All-in-One Solution to Hire Top Global Talent

    ALLSTARSIT is an international outstaffing service provider that helps businesses recruit, pay, insure, and support top global talent with payroll, benefits, and more.
    Business Services, Human Resources
    • 1001-2000 Members
    • $25 - $49/hr
    • $25,000 to $50,000
  • AI bees

    AI bees

    San Francisco, United States
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    Help people grow & connect

    Boldr believes talent is equally distributed, but opportunity is not. It is changing that paradigm, building global teams through ethical talent outsourcing.
    Business Services, BPO
    • 51-100 Members
    • < $5,000
  • Alcor

    Alcor

    Palo Alto, United States
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    Building software R&D teams in East.Europe & LATAM

    Alcor is a full-cycle service provider that builds software R&D teams for US product tech companies in Eastern Europe and Latin America. We have an exclusive focus on tech recruitment with full operational support. Our solution includes: ?
    Business Services, Human Resources
    • 51-100 Members
    • < $5,000
  • Wing Assistant

    Wing Assistant

    Berkeley, United States
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    Wing Assistant, based in Berkeley, CA, is a leading provider of BPO and Business Services tailored to meet the diverse needs of businesses across various industries.
    Business Services, BPO
    • 51-100 Members
    • $10 - $24/hr
    • < $5,000
  • Stellar Staff

    Stellar Staff

    Newport Beach, United States
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    Stellar Staff is a leading business process outsourcing (BPO) company based in the vibrant city of Newport Beach, CA.
    Business Services, BPO
    • 201-500 Members
    • $10 - $24/hr
    • < $5,000
  • Alert Communications

    Alert Communications

    Camarillo, United States
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    Alert Communications, based in Camarillo, CA, is a leading provider of BPO and Business Services. Our company specializes in offering a wide range of services to help businesses streamline their operations and improve efficiency.
    Business Services, BPO
    • 201-500 Members
    • $50 - $99/hr
    • < $5,000
  • 310 Creative Inc.

    310 Creative Inc.

    Santa Monica, United States
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    310 Creative Inc. is a leading provider of BPO and Business Services located in Santa Monica, CA. Our company specializes in delivering top-notch solutions to meet the diverse needs of businesses across various industries.
    Business Services, BPO
    • 2-10 Members
    • $50 - $99/hr
    • $5,000 to $10,000
  • Telecom, Inc.

    Telecom, Inc.

    Oakland, United States
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    Telecom, Inc. is a leading business process outsourcing (BPO) company based in Oakland, CA, specializing in providing a wide range of business services to meet the diverse needs of our clients.
    Business Services, BPO
    • 51-100 Members
    • $25 - $49/hr
    • < $5,000
  • Tri Source International

    Tri Source International

    Santa Clarita, United States
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    Tri Source International is a leading business process outsourcing (BPO) and business services company located in Santa Clarita, CA. Our dedicated team of professionals is committed to providing top-notch services to meet the diverse needs of our clients.
    Business Services, BPO
    • 1001-2000 Members
    • $10 - $24/hr
    • $250,000 to $500,000
  • Insurance Telemarketer

    Insurance Telemarketer

    Newport Beach, United States
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    Insurance Telemarketer, based in Newport Beach, CA, is your trusted partner in enhancing customer engagement and driving business growth.
    Business Services, BPO
    • 201-500 Members
    • $25 - $49/hr
    • < $5,000
  • Clarke Executive Services Group LLC

    Clarke Executive Services Group LLC

    Los Angeles, United States
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    Clarke Executive Services Group LLC is a renowned company based in the vibrant city of Los Angeles, CA. At Clarke Executive, we pride ourselves on delivering top-notch BPO and Business Services tailored to meet the diverse needs of our clients.
    Business Services, BPO
    • 2-10 Members
    • $200 - $300/hr
    • $5,000 to $10,000
  • Westside Financial

    Westside Financial

    Los Angeles, United States
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    Westside Financial, based in the vibrant city of Los Angeles, CA, is your trusted partner in financial success. At Westside Financial, we pride ourselves on delivering top-notch Accounting and Business Services tailored to meet your unique needs.
    Business Services, Accounting
    • 2-10 Members
    • $10 - $24/hr
    • < $5,000
  • RTA Group, LLC

    RTA Group, LLC

    Roseville, United States
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    RTA Group, LLC is a trusted name in the business world, located in Roseville, CA. We pride ourselves on providing top-notch Accounting and Business Services tailored to meet the diverse needs of our clients.
    Business Services, Accounting
    • 21-50 Members
    • $25 - $49/hr
    • < $5,000
  • A Bigger Bottom Line, LLC.

    A Bigger Bottom Line, LLC.

    Irvine, United States
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    A Bigger Bottom Line, LLC is a leading firm based in Irvine, CA, dedicated to helping businesses achieve financial success through expert accounting and business services.
    Business Services, Accounting
    • 2-10 Members
    • $150 - $199/hr
    • $5,000 to $10,000
  • Rockwell Capital Group

    Rockwell Capital Group

    Glendale, United States
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    Rockwell Capital Group is a premier financial services firm located in Glendale, CA. Specializing in Accounting and Business Services, we provide tailored solutions to meet the diverse needs of our clients.
    Business Services, Accounting
    • 2-10 Members
    • $100 - $149/hr
    • < $5,000
  • Prime Accounting Solutions

    Prime Accounting Solutions

    Culver City, United States
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    Prime Accounting Solutions is a reputable company based in Culver City, CA, dedicated to providing top-notch accounting and business services to clients. With a team of experienced professionals, we offer a wide range of services tailored to meet the unique needs of each client.
    Business Services, Accounting
    • 21-50 Members
    • $100 - $149/hr
    • < $5,000
  • Bharmal & Associates, Inc.

    Bharmal & Associates, Inc.

    Irvine, United States
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    Bharmal & Associates, Inc. is a trusted name in the world of accounting and business services. Established in Irvine, CA, our company prides itself on delivering top-notch solutions tailored to meet the unique needs of our clients.At Bharmal & Associates, Inc.
    Business Services, Accounting
    • 2-10 Members
    • $200 - $300/hr
    • < $5,000
  • SFBay Financial

    SFBay Financial

    San Francisco, United States
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    SFBay Financial is a trusted financial services provider based in the vibrant city of San Francisco, CA. At SFBay Financial, we pride ourselves on delivering top-notch solutions tailored to meet the diverse needs of our clients.
    Business Services, Accounting
    • 21-50 Members
    • $100 - $149/hr
    • < $5,000
  • Konnect

    Konnect

    Irvine, United States
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    Konnect is a dynamic company based in Irvine, CA, dedicated to transforming businesses through innovative solutions. At Konnect, we pride ourselves on providing top-notch Human Resources and Business Services tailored to meet the unique needs of our clients.
    Business Services, Human Resources
    • 21-50 Members
    • $100 - $149/hr
    • < $5,000
  • TurnKey

    TurnKey

    Menlo Park, United States
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    Located in the heart of Menlo Park, CA, TurnKey is a leading provider of comprehensive Human Resources and Business Services solutions for businesses of all sizes.
    Business Services, Human Resources
    • 201-500 Members
    • $50 - $99/hr
    • $75,000 to $100,000
  • Franchise Beacon, LLC

    Franchise Beacon, LLC

    Irvine, United States
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    Franchise Beacon, LLC is your trusted partner in navigating the world of franchising. Based in Irvine, CA, we pride ourselves on our unwavering commitment to helping businesses thrive and grow.
    Business Services, Human Resources
    • 2-10 Members
    • $150 - $199/hr
    • $75,000 to $100,000
  • Xync Inc.

    Xync Inc.

    Marina del Rey, United States
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    Why do business the hard way

    Talent is the #1 competitive advantage for many leading businesses, driving cutting-edge strategies, exceptional operations, and thriving cultures. Unlike traditional BPOs, Catalyst BPX’s team consists of seasoned leaders from technology companies.
    Business Services, BPO
    • 51-100 Members
  • Start Up And Fly Inc.

    Start Up And Fly Inc.

    United States
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    Start Up And Fly Inc. is a dynamic company based in CA, specializing in BPO and Business Services. With a commitment to excellence and innovation, we provide a range of solutions to help businesses streamline their operations and achieve their goals.
    Business Services, BPO
    • 51-100 Members
    • < $5,000
  • Hello Outbound

    Hello Outbound

    Truckee, United States
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    Hello Outbound, based in Truckee, CA, is a leading provider of BPO and Business Services. Our company specializes in offering a wide range of services tailored to meet the diverse needs of businesses across various industries.
    Business Services, BPO
    • 2-10 Members
    • $10,000 to $25,000
  • TeleContact Resource Services

    TeleContact Resource Services

    Riverbank, United States
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    TeleContact Resource Services is a customer-centric BPO company based in Riverbank, CA. At TeleContact, we pride ourselves on delivering top-notch business services that help our clients thrive in today's competitive landscape.
    Business Services, BPO
    • 51-100 Members
    • < $5,000
  • Smiles On Demand

    Smiles On Demand

    San Diego, United States
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    Located in sunny San Diego, CA, Smiles On Demand is a leading provider of BPO and Business Services. With a commitment to excellence and a focus on customer satisfaction, we offer a wide range of tailored solutions to meet the diverse needs of businesses in various industries.
    Business Services, BPO
    • 1001-2000 Members
    • $10 - $24/hr
  • Boldr.

    Boldr.

    Santa Monica, United States
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    Boldr, located in Santa Monica, CA, is a leading provider of BPO and business services, dedicated to helping businesses thrive in today's competitive landscape.
    Business Services, BPO
    • 1001-2000 Members
    • < $5,000
  • Basis 365 Accounting

    Basis 365 Accounting

    West Hollywood, United States
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    Basis 365 Accounting is a leading firm based in West Hollywood, CA, specializing in BPO and Business Services.
    Business Services, BPO
    • 21-50 Members
    • < $5,000
  • Virtual Coworker

    Virtual Coworker

    West Hollywood, United States
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    Virtual Coworker, located in West Hollywood, CA, specializes in providing a range of BPO and Business Services to clients worldwide. Our team of dedicated professionals is committed to delivering high-quality solutions tailored to meet the unique needs of each client.
    Business Services, BPO
    • 201-500 Members
    • $10 - $24/hr
  • MATAX

    MATAX

    San Francisco, United States
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    MATAX is a leading firm based in the vibrant city of San Francisco, CA, offering a comprehensive range of accounting and business services to meet the diverse needs of our clients.
    Business Services, Accounting
    • 2-10 Members
    • < $5,000
  • Tehrani & Velez, LLP

    Tehrani & Velez, LLP

    Irvine, United States
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    Tehrani & Velez, LLP is a leading firm based in Irvine, CA, dedicated to providing exceptional Accounting and Business Services to a diverse range of clients.
    Business Services, Accounting
    • 2-10 Members
    • $200 - $300/hr
  • Accountaxpert

    Accountaxpert

    San Francisco, United States
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    Accountaxpert is a leading accounting firm based in the vibrant city of San Francisco, CA. Specializing in accounting and business services, our dedicated team is committed to providing top-notch financial solutions to businesses of all sizes.
    Business Services, Accounting
    • 21-50 Members
    • $10 - $24/hr
  • Magnolia 313 Accounting Services

    Magnolia 313 Accounting Services

    San Luis Obispo, United States
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    Magnolia 313 Accounting Services is a trusted provider of accounting and business services located in the vibrant city of San Luis Obispo, CA.
    Business Services, Accounting
    • 2-10 Members
    • $200 - $300/hr
  • TGG Accounting

    TGG Accounting

    San Diego, United States
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    Located in the vibrant city of San Diego, CA, TGG Accounting is a trusted partner for businesses seeking top-notch accounting and business services.
    Business Services, Accounting
    • 51-100 Members
    • $5,000 to $10,000
  • indinero

    indinero

    Walnut, United States
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    Indinero, nestled in Walnut, CA, is your go-to partner for all things financial. With a passion for helping businesses thrive, we offer a wide range of services tailored to meet your unique needs.
    Business Services, Accounting
    • 51-100 Members
    • $100 - $149/hr
  • Remotesome

    Remotesome

    San Francisco, United States
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    Remotesome is a dynamic company based in San Francisco, CA, specializing in providing top-notch Human Resources and Business Services to businesses of all sizes.
    Business Services, Human Resources
    • 21-50 Members
    • $5,000 to $10,000
  • DevSignal

    DevSignal

    Los Angeles, United States
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    DevSignal is a leading company based in Los Angeles, CA, specializing in providing top-notch Human Resources and Business Services to businesses of all sizes.
    Business Services, Human Resources
    • 2-10 Members
    • $25 - $49/hr
  • Fabric Staffing

    Fabric Staffing

    Marina del Rey, United States
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    Fabric Staffing is a leading company based in Marina del Rey, CA, specializing in providing top-notch Human Resources and Business Services to businesses of all sizes.
    Business Services, Human Resources
    • 21-50 Members
    • $10,000 to $25,000
  • Forshay

    Forshay

    Lafayette, United States
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    Forshay is a leading company based in Lafayette, CA, dedicated to providing top-notch Human Resources and Business Services. At Forshay, we pride ourselves on our commitment to excellence, integrity, and innovation in everything we do.
    Business Services, Human Resources
    • 21-50 Members
    • $10,000 to $25,000
  • Ogden Page Accountancy Corporation

    Ogden Page Accountancy Corporation

    Los Angeles, United States
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    Ogden Page Accountancy Corporation is your trusted partner in financial success. With a strong presence in the heart of Los Angeles, CA, we have been serving businesses with expert accounting solutions tailored to meet your unique needs.
    Business Services, Accounting
    • 21-50 Members
  • Barsa & Company, CPAs

    Barsa & Company, CPAs

    San Diego, United States
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    Barsa & Company, CPAs is a trusted accounting firm based in the vibrant city of San Diego, CA. At Barsa & Company, we pride ourselves on providing top-notch accounting and business services tailored to meet the unique needs of our clients.
    Business Services, Accounting
    • 2-10 Members
  • Tax City, Inc.

    Tax City, Inc.

    Temecula, United States
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    Tax City, Inc. is your trusted partner in navigating the complex world of finances and taxes. Located in the vibrant city of Temecula, CA, we pride ourselves on providing top-notch services tailored to meet the unique needs of our clients.At Tax City, Inc.
    Business Services, Accounting
    • 2-10 Members
  • EBC TAXES

    EBC TAXES

    Pleasanton, United States
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    EBC TAXES is your trusted partner in navigating the complex world of financial management. With a commitment to excellence and a personalized approach, we are dedicated to helping businesses thrive.
    Business Services, Accounting
    • 2-10 Members
  • Wertz & Company, LLP

    Wertz & Company, LLP

    Irvine, United States
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    Wertz & Company, LLP, based in vibrant Irvine, CA, is your trusted partner in navigating the complex world of accounting and business services.
    Business Services, Accounting
    • 21-50 Members
  • Callbox

    Callbox

    Los Angeles, United States
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    Callbox is a leading provider of BPO and Business Services located in the vibrant city of Los Angeles, CA.
    Business Services, BPO
    • 201-500 Members
  • Leivas Tax Wealth Management

    Leivas Tax Wealth Management

    Riverside, United States
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    Leivas Tax Wealth Management is a trusted financial services firm located in Riverside, CA. Specializing in Accounting and Business Services, we are dedicated to helping individuals and businesses achieve their financial goals.
    Business Services, Accounting
    • 21-50 Members
  • David L. Moonie & Co., LLP

    David L. Moonie & Co., LLP

    Eureka, United States
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    David L. Moonie & Co., LLP is a reputable firm based in Eureka, CA, providing a wide range of professional services in the fields of accounting and business services.
    Business Services, Accounting
    • 2-10 Members
  • Lalea & Black

    Lalea & Black

    Beverly Hills, United States
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    Lalea & Black is a premier business consultancy firm based in the heart of Beverly Hills, CA. With a commitment to excellence and a passion for helping businesses thrive, we pride ourselves on delivering top-notch services tailored to meet the unique needs of our clients.
    Business Services, Accounting
    • 2-10 Members

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