Accounting Firm

Cooper Arias, LLP

Hudson Valley CPA firm offering accounting, auditing, tax planning and estate work from three county offices

Visit Website Get a quoteRequest a demo / quote Write a Review

TrustList summary

Cooper Arias, LLP is an accounting firm with offices in Orange, Rockland and Sullivan Counties in New York, serving the Hudson Valley and the wider tri-state area. It began in 1988 as a one-person practice. The firm pitches itself as big enough to cover a full range of accounting, tax, audit and consulting work while staying small enough to know clients personally.

Products and services

Accounting: general accounting for businesses and individuals.
Auditing: audit work on financial statements.
Tax planning: planning and preparation for business and personal tax.
Estate and trust work: tax and accounting for estates and trusts.
Small business consulting: advice for owners of smaller companies.
Online tools: a tax centre plus financial and paycheck calculators on its website.

Who it works with

The firm serves individuals and small businesses across the Hudson Valley and the tri-state area.

Key facts

Based in: Middletown area, with offices in Orange, Rockland and Sullivan Counties
Founded: 1988
Team: 31 staff, including 9 CPAs
Memberships: American Institute of CPAs and New York State Society of CPAs

Summary written by TrustList from the business's own published information, Sep 2026.

Gallery

2 images - click to enlarge

Categories & features

Cooper Arias, LLP rankings

Cooper Arias, LLP is ranked on 4 TrustList rankings: #2 on 1, #25 on 1, #36 on 1 and #45 on 1.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. Cooper Arias, LLP has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Accounting firm · 4 rankings

#2of 91
Auditing
It is one of 3 here listing calculators and one of 67 here listing tax.
Its profile: “- Auditing: audit work on financial statements.”
Of the top 80 here, 68 also cover accounting and 67 also cover tax; 4 also work in New York and 4 also work in Dubai.
#25of 129
Calculators
It is one of 4 here listing auditing and one of 49 here listing accounting.
Its profile: “- Online tools: a tax centre plus financial and paycheck calculators on its website.”
Of the top 88 here, 18 also cover external and 17 also cover goals; 10 also work in California and 6 also work in York.
Behind Conover Asay CPA, ahead of Cornerstone CPA Group.
#36of 2706
United states
It is one of 5 here listing calculators and one of 7 here listing auditing.
Of the top 99 here, 13 also cover legal and 12 also cover government; 4 also work in Washington and 3 also work in New Jersey.
Behind Beasley, Mitchell & Co., ahead of Jerry Sung CPA & Associates.
#45of 3036
Tax
It is one of 5 here listing auditing and one of 6 here listing calculators.
Its profile: “The firm pitches itself as big enough to cover a full range of accounting, tax, audit and consulting work while staying small enough to know clients personally.”
Of the top 72 here, 9 also cover partners and 8 also cover reporting; 2 also work in Sagar and 2 also work in Canberra.
Behind CSB Group.