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(631) 532-5622 · Amityville, NY
Long Island Tax & Accounting
Tax Preparation & Advisory Services on Long Island, NY
Geiger Tax & Accounting provides tax preparation, bookkeeping, and advisory services for individuals and small business owners across Nassau County and Suffolk County. With over 30 years of experience, we help clients simplify complex tax situations, stay compliant, and make more informed financial decisions year-round.
Tax Preparation
Individual 1040s, business returns (LLC, S-Corp, partnership), prior-year filings, and amended returns.
Tax Advisory & Planning
Year-round planning, income structuring, estimated tax forecasting, and entity formation guidance.
Small Business Services
Business return preparation, quarterly tax planning, expense review, and cash flow-aware guidance.
Self-Employed & Freelance
1099 income organization, deduction optimization, quarterly payment planning, and penalty avoidance.
Bookkeeping & Organization
Monthly or quarterly bookkeeping, expense categorization, P&L tracking, and year-end summaries.
Year-Round Support
Tax questions don’t stop on April 15. We’re available year-round for planning, life events, and guidance.
Core service
Full-Service Tax Preparation

We provide accurate, structured tax preparation for individuals and business owners, including:

Individual Returns
Federal and state individual tax returns (Form 1040)
Multi-income households (W-2, 1099, investment income)
Prior-year tax filings and corrections
Amended returns (Form 1040-X)
Business Returns
LLCs and sole proprietors (Schedule C)
S-Corporation returns (Form 1120-S)
Partnership returns (Form 1065)
Multi-member LLC filings

Our goal is to ensure accuracy while identifying opportunities for improved tax outcomes over time.

Business owners
Small Business Tax Services

We work closely with small business owners throughout Long Island to manage both compliance and planning. Services include:

Business tax return preparation
Expense categorization and deduction review
Quarterly estimated tax planning
Cash flow-aware tax guidance
Entity structure support (LLC vs S-Corp considerations)

We focus on helping business owners understand how their decisions impact taxes throughout the year — not just at filing time.

Freelancers & contractors
Self-Employed & Freelance Tax Support

Self-employed clients often deal with irregular income and complex deduction rules. We help clients:

Organize 1099 and freelance income
Track and optimize business deductions
Plan for quarterly tax payments
Avoid underpayment penalties
Build consistent tax planning habits

This is one of our core focus areas.

Beyond filing
Tax Advisory & Planning Services

Beyond tax filing, we provide advisory services designed to improve long-term financial outcomes. This includes:

Year-round tax planning support
Income structuring strategies
Tax liability reduction planning (within legal frameworks)
Guidance on business formation decisions
Estimated tax forecasting
Financial foundation
Bookkeeping & Financial Organization

Clean financial records are essential for accurate tax reporting. We assist with:

Monthly or quarterly bookkeeping support
Expense categorization systems
Profit and loss tracking
Year-end financial summaries
Our clients
Who We Serve
Small business owners
LLCs, S-Corps, partnerships, and sole proprietors
Self-employed professionals
Consultants, freelancers, and independent contractors
LLC & partnership owners
Entity filings, K-1s, and pass-through income
Multi-income individuals
W-2, 1099, investment, rental, and business income
Where we serve
Serving Nassau & Suffolk County

We serve clients throughout Long Island:

Nassau County
Massapequa, Wantagh, Merrick, Bellmore, Seaford, Farmingdale, Amityville, and surrounding areas
Suffolk County
Babylon, Lindenhurst, Huntington, Islip, Bay Shore, and surrounding communities
Remote services available. We also work with clients remotely across New York State and nationwide via our secure TaxDome portal.
Schedule a consultation
Ready for experienced tax preparation and advisory services?
We provide a structured, professional process designed to simplify your taxes and improve financial clarity. Serving Long Island and nationwide clients.
Book a business consultation
New — self-employed, LLC, S-Corp & complex situations
Access the client portal
New individual filers & all existing clients