Cornerstone Group, LLC is a CPA firm in Newark, DE serving individuals, small businesses, and corporations with tax and accounting support. The firm provides tax planning and tax services, with source material emphasizing that planning and preparation work together so tax obligations can be anticipated rather than treated as a surprise.

Its listed services include accounting services, bookkeeping, payroll, sales tax, and new business formation. Cornerstone Group also offers help with IRS notices and audits, giving clients support when tax questions or agency correspondence need attention.

The profile facts also indicate remote availability, making the firm available beyond in-person service where appropriate.