Integrity Accounting Solutions, Inc. ® (IAS), is a woman-owned full-service accounting firm based in California with over 220 years of industry experience, with 5 generations of continuing accounting heritage. We pride ourselves in providing the high-quality professional accounting service capabilities of a large firm, with the personality of a small firm. At Integrity Accounting Solutions Inc. (IAS), each client can expect to be treated with importance, care, and attention to detail.