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Expert Forensic Accounting Services in New York
Mark S Gottlieb CPA P C has dedicated over three decades to providing forensic accounting, business valuation, and litigation support services to attorneys and their clients nationwide. Our team of credentialed professionals combines meticulous investigative techniques with extensive financial expertise to deliver comprehensive solutions in complex legal cases. We specialize in uncovering financial discrepancies, quantifying economic damages, and providing expert court testimony that withstands rigorous scrutiny. Our practice extends beyond traditional accounting through forensic audits, business valuations, and expert witness services that help legal professionals build stronger cases. With offices in New York City, White Plains, and Stamford, we serve as strategic partners for law firms and corporations requiring precise financial analysis in litigation matters.

Our team's credentials include CPA, ABV, CFF, ASA, and CVA designations, reflecting our commitment to professional excellence. We approach each case with individualized attention to detail, ensuring that our analysis becomes a critical asset in resolving legal disputes. Our forensic accounting investigations uncover hidden assets, trace fund movements, and identify financial irregularities that prove essential in litigation. As expert witnesses, we translate complex financial concepts into accessible evidence that effectively communicates with judges and juries. Our litigation support services extend through all phases of legal proceedings, from document analysis to trial preparation. With over 30 years of experience, we've established a reputation for delivering reliable, court-ready financial expertise that consistently meets the highest professional standards.
Services
Business Valuation Forensic Accounting Litigation Support Expert Testimony Economic Damages Transaction Advisory Record Reconstruction Arbitration Services Fraud Investigation Tax Compliance
Highlights and features
  • We offer over 30 years of forensic accounting and litigation support experience
  • Our team holds multiple industry certifications including CPA/ABV/CFF, ASA, and CVA
  • We provide court-tested expert witness testimony in business valuation cases
  • Our forensic investigations have uncovered millions in hidden financial assets
  • We deliver tailored economic damage calculations for complex litigation matters
What people say
Extraordinary services Thorough and professional Quickly responsive Court-ready analysis Excellent investigator
Services
Business Valuation
Our business valuation services determine accurate company worth through comprehensive financial analysis, market assessment, and industry benchmarking. We provide defensible valuations for shareholder disputes, mergers and acquisitions, and litigation purposes. Our CPA/ABV-certified professionals apply specialized methodologies that withstand legal scrutiny while delivering actionable insights for strategic decision-making.
Forensic Accounting
Specialized forensic accounting services uncover financial irregularities, trace hidden assets, and reconstruct incomplete records through meticulous investigative techniques. Our team identifies fraud patterns, quantifies financial losses, and documents findings for legal proceedings. These services help clients resolve complex financial disputes and strengthen litigation positions through verifiable evidence.
Litigation Support
Comprehensive litigation support services include document analysis, expert reports, and damge calculations tailored to legal cases. We assist attorneys with financial evidence interpretation, discovery requests, and trial preparation. Our experts deliver clear explanations of complex financial matters to strengthen legal arguments and support favorable case resolutions.
Expert Testimony
Our credentialed professionals provide expert testimony services that effectively communicate complex financial findings to judges and juries. We prepare detailed expert reports, withstand cross-examination, and present financial evidence with clarity and authority. This service strengthens legal cases through credible, court-tested professional opinions.
Economic Damages
Specialized economic damage calculations quantify financial losses in personal injury, wrongful termination, and commercial disputes. We analyze lost profits, business interruption costs, and asset valuation discrepancies to determine accurate damage assessments. Our detailed reports provide critical evidence for damage claims and settlement negotiations.
People
Mark S. Gottlieb
CPA/ABV/CFF, ASA, CVA, CBA, MST
With over 30 years of experience, Mark leads forensic accounting examinations and business valuations. His expertise includes economic damages analysis, litigation support, and expert witness testimony in complex financial cases.
Questions
What services does Mark S. Gottlieb, CPA provide?
We specialize in forensic accounting, business valuation, litigation support, expert testimony, economic damage calculations, and transaction advisory services for legal professionals and corporations.
How does your forensic accounting experience benefit legal cases?
Our extensive forensic experience uncovers hidden assets, traces financial irregularities, and provides clear evidence that strengthens legal positions in court proceedings.
Can you handle complex business valuation cases?
Yes, with over 30 years of experience and multiple industry certifications, we deliver precise business valuations that withstand courtroom scrutiny.
Do you provide expert witness testimony in multiple states?
Our expert witnesses have testified in various state courts and federal jurisdictions across the United States.
How quickly can you respond to urgent litigation needs?
We prioritize timely responses and typically provide initial consultations within 24 hours of contact.
Reviews (4)
Jennifer Weinstein
May 15, 2022 Report
Mark was the utmost professional. His staff was incredibly responsive and helpful. But most importantly, substantively, Mark has a mastery of forensic accounting. He was able to explain clearly and concisely both the conclusions he had come to as well as the reasons why he had come to those conclusions. And he came prepared to my divorce litigation, with both document and testimonial evidence. I truly believe that but for Mark's testimony in my divorce hearing and his supportive findings regarding my ex-husband's individually held business, I would never have received the alimony award and property division that I did.
Jennifer Weinstein
Jul 27, 2021 Report
Mark, thank you so much for all of your work, effort and patience with my case. You were fabulous today at the hearing; your professional, articulate, knowledgeable testimony displayed your command of not only this case and evaluation of my husband's business but it showed that you are true expert in the field, and as a former extern with the VT chief bankruptcy judge, I have seen many forensic accountants testify before the court and you were by far the best I have seen-thank you.
Dr. Jamal Hammad
Nov 24, 2020 Report
My lawyers and I hired Mark Gottlieb at MSG for what turned out to be a very contested shareholder dispute. Our matter involved the valuation of several closely-held businesses. Mark and his team are exceptional. His report is concise, informative, and spot one all of the issues that drive valuation. It was a far superior report as compared to the adversary. We had multiple days of testimony, but the proof of the pudding was when opposing counsel stopped Mark as he left the witness stand on his last day of testimony and asked him for his business card. Being a litigant in a dispute is very difficult, but working with Mark and his team was very easy. I highly recommend them.
Gene Silbersweig
Jun 20, 2019 Report
As a business owner I have engaged MSG CPAs on a number of occasions to perform forensic investigations. In every instance I have found Mark and his firm to be very responsive to my concerns and needs. Forensic investigations are very different than the common place accounting services. Mark's team is well qualified and experienced. I highly recommend this firm if you need this specialized skill set.