Accounting, Tax & Advisory · Long Island & New York metropolitan area

Accounting, tax, and advisory for privately held businesses and their owners.

Build reliable financial operations, gain a clearer view of cash and performance, make tax decisions before the window closes, and be ready when a lender, external auditor, or buyer puts the numbers under greater scrutiny.

Prefer to call about becoming a client? (631) 677-1344

Two members of the firm’s leadership team standing together
John W. Halloran, Jr., CFA · John W. Halloran, CPA Accounting and tax expertise, paired with strategic financial perspective.
Licensed New York CPA firm Established on Long Island in 2005 Built around your existing team
Where we can help

Start with what is happening in your business.

You do not need to choose an accounting service before reaching out. Most conversations begin with one of three business situations.

Your accounting function has not kept pace with growth.

You need a reliable close, useful reporting, experienced oversight, and proactive business-tax planning without building every finance role internally.

Often includes: Client Accounting Services and Business Tax

Explore Business Accounting & Tax

An external deadline is raising the standard for your financials.

A lender, investor, external auditor, buyer, or planned sale is creating new demands for accurate records and organized support.

Often includes: Client Accounting Services, Audit Readiness, or Transaction Advisory

Explore Financial Readiness

Management needs stronger controls and risk visibility.

You need nonattest controls consulting for an important process or formal or co-sourced capacity for defined internal-audit work.

Often includes: Controls Consulting or Internal Audit

Explore Internal Controls & Risk Support
What we do

One ongoing relationship, with focused support when circumstances change.

For growing businesses, the core need is often a dependable accounting and business-tax foundation. Additional oversight, advice, or project support can be added when the situation warrants it.

Ongoing business relationship

Business Accounting & Tax

Build a reliable close and useful reporting, coordinate year-round business-tax planning, and add experienced finance leadership without recreating every role internally.

Explore Business Accounting & Tax
Focused engagements

Defined support for a specific event or risk.

When an external deadline, transaction, or control concern raises the standard, the work can be scoped around that particular need.

Why Halloran

Clear scope. Coordinated support.

We scope the work around your needs, existing team, systems, timing, and other advisers, with responsibilities defined clearly from the outset.

Meet our leadership
01

Defined before work begins

After confirming fit, a written proposal describes the work, responsibilities, deliverables, schedule, and fees.

02

The right depth when warranted

Controller and CFO support can be added to the recurring accounting and business-tax foundation when warranted. Readiness, transaction, and controls work can be scoped for a defined event or risk.

03

Built around your existing team

We define responsibilities around the people, systems, and advisers already in place, adding only the capabilities the business needs.

Let’s talk

Tell us what you need next.

We help established privately held businesses with ongoing accounting and tax needs or focused readiness, controls, or transaction support, and private clients whose complex tax needs benefit from year-round planning and coordination.

A few sentences about your business, ownership, or family tax picture and timing are enough to start. We generally respond within one business day.

Prefer to call about becoming a client? (631) 677-1344

Tell us what is changing

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