I’ve been a client of ROI Business Services since 2009 for all my business accounting matters, as well as personal taxes, and I couldn’t be more satisfied. Mark Mirsky is an expert CPA professional, knowledgeable about the latest tax laws and regulations. ROI took over the accounting for my corporation when it was experiencing fast growth, $1M+, with employees and vendors located in several states. It had become really complicated, at least from my perspective, but Mark and his team have done a great job since the very beginning of our relationship to smooth multistate issues, always providing sound advice over the years. His team is very detail-oriented, asks the right questions, and all returns and filings are done promptly and accurately. I have great trust in ROI and highly recommend them for both business and personal tax needs.