Business Tax Preparation in Union, NJ

Professional Tax Services for Small Businesses and Entrepreneurs

Running a small business is hard work — and tax season only adds to the pressure. At John O'Shea Tax Preparation and Business Services LLC, we specialize in helping small businesses across Union, NJ stay organized, compliant, and profitable through accurate and strategic tax preparation.

Whether you're a sole proprietor, LLC, partnership, or freelancer, we provide personalized support to ensure your business taxes are filed correctly — and that you're not leaving money on the table.

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Tax Preparation Tailored to Your Business

Every business is different. That’s why our services are customized to fit your structure, your goals, and your industry. We take the time to understand your revenue streams, expenses, and obligations — then file accordingly.

We serve:

  • Sole Proprietors & 1099 Contractors

  • LLCs and Partnerships

  • Freelancers & Consultants

  • Online Businesses & Retailers

  • Local Service-Based Businesses

From tracking deductible expenses to managing quarterly estimated taxes, our goal is to reduce your tax burden while keeping you fully IRS-compliant.

What’s Included in Our Business Tax Services

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 Federal and State Business Returns

We prepare and e-file your annual business tax returns based on your entity type, ensuring all income and deductions are properly reported.

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Quarterly Estimated Tax Payments

Avoid penalties and surprises with quarterly tax calculation and filing support tailored to your earnings.

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1099 Filing & Contractor Tax Prep

We help you issue and file 1099s for your independent contractors — and ensure your reporting is accurate and timely.

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Business Deductions & Tax Planning

From vehicle expenses to home office deductions, we help you identify every deduction your business qualifies for — and plan ahead for the coming year.

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Catch-Up or Back Tax Filing

 Behind on returns or switching from another preparer? We’ll get your books in order and file any past-due tax documents.

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Year-Round Access & Consulting

We don’t disappear after April. Ask questions, review strategy, and get tax support any time — we’re available 24/7.

Why Work With a Local Business Tax Preparer?

Big-name tax chains and generic online software often miss the mark when it comes to small business needs. At John O’Shea Tax Preparation, you get:

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Local Expertise

We know New Jersey state tax requirements, local business conditions, and what small business owners in Union are up against.

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One-on-One Support

Every client works directly with John — no junior staff, no outsourcing, no confusion.

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Real-Time Availability

Questions don’t wait for business hours. We’re here when you need answers — evenings, weekends, and beyond.

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Personalized Filing & Strategy

We don’t just file. We advise, plan, and help you make smarter business decisions based on your financial picture.

Common Tax Issues We Help Solve

We serve:

  • Missed quarterly payments or underpayment penalties

  • Misclassification of contractors vs. employees

  • Poor recordkeeping or bookkeeping errors

  • Not knowing what expenses are deductible

  • Unfiled past-year returns

  • Confusion around multi-state tax filing or sales tax

We’ve seen it all — and we help you clean it up, fix it fast, and stay on track.

FAQs About Business Tax Preparation

  • What documents do I need to prepare for business taxes?

    You’ll need income and expense reports, bank statements, 1099s received or issued, payroll summaries (if applicable), and last year’s tax return. We’ll send a checklist to guide you.

  • Can you help if I haven't kept good records?

    Yes. We offer basic bookkeeping and cleanup services to get your records tax-ready — even if they’ve been neglected all year.

  • Do I need to file quarterly taxes?

    If you’re self-employed or run an LLC that generates profit, you likely need to file estimated taxes every quarter. We’ll calculate and file them for you.

  • Can you help me reduce my tax bill?

    Absolutely. We’ll explore all legal deductions and offer strategic advice to lower your taxable income and improve your financial position.

Get Peace of Mind This Tax Season — and Beyond

Taxes don’t have to be stressful. With John O'Shea Tax Preparation and Business Services LLC, you get expert-level support, honest communication, and year-round access to a local professional who cares about your business as much as you do.