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Top Business Service Companies in New York

20 of 53 business service companies ranked on evidence in the Q4 2026 edition.

Between them, the 53 business service companies on this page cover accounting (8), tax (6), legal (5) and financial services (4). They also list work in York, California, Rochester and London. 53 of them have written a profile you can read before you get in touch.

TrustList ranking

Q4 2026 edition

20 of 53 business service companies ranked on evidence held on 12 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.

Positions are fixed for the quarter; the next edition is due in January 2027.

How this is ranked About this edition

All business service companies 20 ranked SMEs 19 ranked

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Brock, Schechter & Polakoff
Financial Services · Business Services · Real Estate
Brock, Schechter & Polakoff, known as BS&P, is an independently owned CPA firm in Buffalo, New York, that has served Western New York since 1972.
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Why #1: Based in Buffalo, New York · Founded 1972, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Key Resource Group, LLC
Staffing and recruiting agency in Buffalo, New York placing temporary, contract and direct hire staff across many industries
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Why #2 (shared): Based in Buffalo, New York · Founded 1983, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Flower City Tax
Accounting · Tax · Partnership · Also in Rochester
In Rochester, New York, Flower City Tax handles tax and accounting work for individuals and businesses.
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Why #2 (shared): Based in Rochester, New York · Founded 1983, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Conlon & Company Certified Publics Accountants
Rochester, New York accounting firm offering tax preparation, bookkeeping and financial planning for individuals and businesses
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Why #4: Based in Rochester, New York · Founded 1984, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Lavin and Associates
CPA firm in Boca Raton and White Plains offering tax, bookkeeping and fractional CFO services to individuals and businesses
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Why #5: Based in Boca Raton, Florida, and White Plains, New York · Founded 1987, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
AP Professionals of Rochester
Accounting · Also in Oregon and Rochester
AP Professionals of Rochester LLC is an employment agency serving Western New York.
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Why #6: Based in Rochester, New York · Founded 1996, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Affinity Personnel Solutions
Industrial · Also in York
Affinity Personnel Solutions, usually called APS, is a staffing agency based in Buffalo, New York. It places workers with employers across Western New York.
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Why #7: Based in Buffalo, New York · Founded 1998, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Black Ink
Accounting · Tax · Also in York
Brooklyn tax and bookkeeping firm serving New York City small businesses with payroll, accounting and IRS representation
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Why #8: Based in Brooklyn, New York, USA · Founded 2000, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Payoneer
Software Development · E-Commerce Development · Web Design · Also in Ukraine
Payoneer is a financial platform for businesses that trade across borders.
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Why #9: Address in New York · Founded 2005, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
Corporate Suites
Corporate Suites runs serviced offices in New York City. The company says it has spent more than two decades managing executive office suites, and it offers private offices and…
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Why #10 (shared): Address in New York · In business 20+ years, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Four Group
Mobile App Development · iOS App · Android · Also in United Kingdom
Four Group is a fashion company that works for clients and runs brands of its own.
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Why #10 (shared): Office in New York · In business 20+ years, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
Brandemix
Digital Marketing · SEO · Internet · Also in York
Brandemix focuses on employer branding and internal communications, and describes itself as the original architects of the field after about twenty years of work.
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Why #10 (shared): Address in New York · In business 20+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Action Telephone Exchange
Action Telephone Exchange is an answering service that handles calls and messages on behalf of its clients.
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Why #10 (shared): Based in Rochester, New York, US · In business 20+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Language Insight
Security · simple · Also in Preston and Durham
Language Insight is a professional language service provider offering translation, transcription and interpreting.
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Why #14: Based in Preston, with offices in New York and London · ISO 9001, ISO 27001, professional accreditation, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Avetalive Inc.
Avetalive Inc. is a medical billing company based in New York that provides full-service billing and revenue cycle management for medical practices.
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Why #15 (shared): Based in New York, USA · Founded 2011, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Carter & Company CPA
Tax · Also in Atlanta
Carter & Company CPA works with organizations at the growth stage from its Atlanta headquarters.
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Why #15 (shared): Based in Atlanta, GA, with offices in New York and Kansas City · In business 15+ years, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Braj Aggarwal, CPA, PC
New York CPA and tax accounting firm serving businesses and individuals, including overseas clients setting up in the US
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Why #15 (shared): Based in New York, USA · In business 15+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Hamptons Virtual Office
Southampton virtual office with a business address, mail handling, reception, meeting rooms and registered agent services
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Why #18: Based in Southampton, New York · Founded 2012, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Exclusive PR Solutions
Public relations comes first at Exclusive PR Solutions, known as EPRS, a New York agency founded in 2014 that combines media relations, crisis management and creative digital…
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Why #19: Based in New York · Founded 2014 · Boutique, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Day Translations
Video · Medical · Inc · Also in London and York
Day Translations is a language services company with an American footprint, built around the needs of global enterprises, law firms, hospital systems and government agencies.
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Why #20: Address in New York · Client numbers stated on its own website, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
Career Group Companies
Accounting · Video · Education · Also in Miami and San Francisco
Over 45 years in recruiting is what Career Group Companies says it brings to hiring.
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On record: In business 45+ years, as stated on its own website, read 9 Oct 2026
Brickman Marketing
Advertising & Marketing · Digital Marketing · Real Estate · Also in California
Brickman Marketing is a marketing and public relations consultancy based in the Monterey area of California.
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On record: In business 30+ years, as stated on its own website, read 5 Oct 2026
Heads-Up Performance
Learning · Security · simple · Also in United States and York
A coaching and training business, Heads-Up Performance helps organizations build a culture of accountability, integrity and reliability.
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On record: In business 20+ years, as stated on its own website, read 9 Oct 2026
Globex Outreach
Advertising & Marketing · Financial Services · Business Services · Also in York
Globex Outreach is a search engine optimisation agency that builds backlinks for client websites.
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On record: In business 10+ years, as stated on its own website, read 9 Oct 2026

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Top Business Service Companies in New York

Brock, Schechter & Polakoff

Key Resource Group, LLC

Flower City Tax

Conlon & Company Certified Publics Accountants

Lavin and Associates

AP Professionals of Rochester

Affinity Personnel Solutions

Black Ink

Payoneer

Corporate Suites

Four Group

Brandemix

Action Telephone Exchange

Language Insight

Avetalive Inc.

Carter & Company CPA

Braj Aggarwal, CPA, PC

Hamptons Virtual Office

Exclusive PR Solutions

Day Translations

Career Group Companies

Brickman Marketing

Heads-Up Performance

Globex Outreach

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