Insights

Boutique to SMB Onyx Tax, LLC operates as a boutique tax and accounting firm serving small to medium-sized business owners, presenting a clear entry point for cross-selling outsourced CFO, tax planning, and multi-entity compliance services to growing SMBs.

Comprehensive CFO Offer virtual CFO and Controller services as an affordable alternative to full-time hires for growing clients, highlighting opportunities to upsell ongoing financial leadership, budgeting, cash flow management, and strategic tax planning.

Multi-entity Expertise Emphasize specialized knowledge in complex and multi-entity tax situations to target businesses undergoing restructuring, mergers, or multi-entity operations, presenting a pathway to retainers for ongoing compliance and planning.

Compliance Leverage Position IRS notice and delinquent filing support as a risk mitigation service to attract clients facing penalties or backlogs, offering remediation, back taxes strategies, and proactive compliance packages.

Tech-Driven Efficiency Leverage the firm’s technology stack (WordPress, Google Cloud, analytics and marketing tools) to propose data-driven engagements, streamlined workflows, and scalable client portals that improve delivery for growth-stage businesses.

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Onyx Tax, LLC Tech Stack

Onyx Tax, LLC uses 8 technology products and services including WordPress, Segment, Shopify, and more. Explore Onyx Tax, LLC's tech stack below.

Onyx Tax, LLC's Email Address Formats

Onyx Tax, LLC uses at least 0 email formats:
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Frequently Asked Questions

What is Onyx Tax, LLC's phone number?

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You can contact Onyx Tax, LLC's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Onyx Tax, LLC's official website and social media links?

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Onyx Tax, LLC's official website is onyxtax.com and has social profiles on LinkedIn.

How much revenue does Onyx Tax, LLC generate?

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As of September 2026, Onyx Tax, LLC's annual revenue is estimated to be $1M - $10M.

What is Onyx Tax, LLC's SIC code and NAICS code?

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Onyx Tax, LLC's SIC code is 8721 - Accounting, Auditing, and Bookkeeping Services and NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does Onyx Tax, LLC have currently?

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As of September 2026, Onyx Tax, LLC has approximately 6 employees across 1 continents, including North America. Key team members include Vice President Credit Administration: J. W., Vice President Community Banking Sales Team Leader: T. C. and Associate Vice President: S. D. Explore Onyx Tax, LLC's employee directory with LeadIQ.

What industry does Onyx Tax, LLC belong to?

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Onyx Tax, LLC operates in the Accounting industry.

What technology does Onyx Tax, LLC use?

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Onyx Tax, LLC's tech stack includes WordPress, Segment, Shopify, Google Cloud, jQuery Migrate, Brevo, WP Engine and Yoast SEO.

When was Onyx Tax, LLC founded?

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Onyx Tax, LLC was founded in 2016.
Onyx Tax, LLC logo

Onyx Tax, LLC

AccountingSouth Carolina, United States2-10 Employees

Onyx Tax, LLC is a boutique accounting firm based in Charleston, South Carolina, serving small to medium-sized business owners since 2016. The firm provides tax preparation and planning for complex, multi-entity organizations, along with IRS notice and compliance support to address delinquent filings and payment issues. It also offers virtual CFO and Controller services to give high-level financial guidance without the cost of a full-time hire, with an emphasis on clear communication, reliability, and organized workflows to keep clients compliant and confident. The company operates within the accounting industry, positioning itself as a practical partner that aims to reduce stress and simplify financial processes for its clients. Onyx Tax, LLC serves business owners seeking structured tax management and strategic financial oversight, supported by its location in Charleston and its focus on helping clients maintain a smoother, more predictable tax experience.

Section iconCompany Overview

Phone number
SIC Code
8721 - Accounting, Auditing, and Bookkeeping Services
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
2016
Employees
2-10

Section iconFunding & Financials

  • $1M - $10M

    Onyx Tax, LLC's revenue is estimated to be in the range of $1M - $10M

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