Firm Background

Nossier Accounting provides tax, accounting, and virtual CFO services with the personalization that software packages can't.

Welcome to Nossier Accounting

Where Details Matter, Standards Are Non-Negotiable, and Clients Come First

Based in Yonkers, New York, Sophie Nossier and the team at Nossier Accounting work with individuals and businesses who want their finances handled correctly, ethically, and thoroughly, without shortcuts and without excuses.

At the core of the practice is a simple philosophy: details matter. Whether it’s tax preparation, accounting, or bookkeeping, nothing gets rushed and nothing gets glossed over. With more than 15 years of experience, Nossier Accounting has built a reputation for precision, discipline, and doing things the right way — even when that takes more time.

Most clients are small business owners who want a full-suite, outsourced accounting relationship, not piecemeal help. The firm works heavily with real estate and construction businesses, along with professionals such as doctors, engineers, and attorneys, supporting them with accounting systems that make sense and financial insight that helps them operate smarter. CFO-level thinking is woven into the work, helping business owners understand what the numbers are actually saying — not just whether they’re compliant.

Ethics are not a buzzword here. They are the foundation. Every engagement is handled with strict adherence to professional standards and clear boundaries, because trust is earned through consistency and integrity.

Clients who work with this firm know exactly what they’re getting: focus, accountability, and someone who takes their financial responsibilities seriously — because Sophie and the entire team do.

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What Clients Rely On

  • Tax Preparation
    Accurate, compliant preparation for individuals and businesses, handled with care and attention to detail.

  • Accounting & Bookkeeping
    Full-service outsourced accounting for business owners who want reliable systems and clean financials year-round.

  • Business-Focused Financial Oversight
    CFO-minded support that helps owners understand cash flow, profitability, and decision-making, especially in New York real estate, construction, and professional services.

Credentials & Professional Standing

  • Enrolled Agent (EA)

  • Member, National Association of Enrolled Agents (NAEA)

  • Member, National Society of Accountants

  • QuickBooks ProAdvisor

  • Recognized as one of the top accountants in Yonkers

These credentials reflect a commitment to education, accountability, and professional excellence, not just marketing.

Call (914) 341-8000 to experience the difference of working with Nossier Accounting today.

Our services are designed specifically for business start-ups, entrepreneurs and small businesses of all sizes. Explore our scope of services for more details.

Services for Businesses