FinSyncBook...

At FinSyncBook, we provide comprehensive, end-to-end solutions that combine expert bookkeeping, accurate financial reporting, and innovative digital strategies to empower businesses of all sizes. From monthly full-cycle bookkeeping to year-end and customized financial reporting, we ensure your financial operations are seamless, transparent, and compliant.

Contact Info
Phone +1 (914) 417-9060
Email contact@finsyncbook.com
Follow Us
📞 Contact Info
📱 +1 (914) 417-9060
✉️ contact@finsyncbook.com
Follow Us
Book a free consultation
Book a free consultation
Home Team Sheikh Adnan Mahmud
Sheikh Adnan Mahmud

Hello, I am Sheikh Adnan Mahmud

Co-Founder, Managing Partner & Director of Tax, Advisory and Business Development
Sheikh A. Mahmud is a business owner, financial services professional, tax practitioner, and licensed real estate salesperson with extensive experience helping individuals, entrepreneurs, and small businesses navigate financial, operational, and growth-related challenges.
Since 2016, Sheikh has worked across bookkeeping, tax preparation, payroll support, business operations, and financial consulting while actively owning and managing businesses in multiple states. His hands-on experience as both an advisor and business owner allows him to understand the real-world challenges clients face and provide practical solutions that support long-term success.
As an IRS-authorized tax professional holding a valid PTIN, Sheikh prepares and electronically files individual and business tax returns and assists clients with quarterly tax filings, sales tax compliance, and multi-state tax obligations. He works with business owners to maintain compliance, improve financial organization, and make informed business decisions throughout the year.

Work experience

In addition to financial services, Sheikh is a licensed New York State Real Estate Salesperson with experience assisting buyers, sellers, investors, landlords, and business owners with residential, commercial, and investment real estate transactions. His background in operating retail and service-based businesses provides valuable insight when working with entrepreneurs seeking business acquisitions, property investments, and growth opportunities.<div>At FINSYNC, Sheikh oversees business operations, client relations, strategic partnerships, and growth initiatives while helping clients build stronger financial foundations and scalable business systems.

  • IRS PTIN Holder

  • New York State Licensed Real Estate Salesperson

  • Mechanical Engineering Graduate (NYIT)

  • OSHA 30 Certified

  • NYC SST Certified

Professional skills

  • Tax Preparation & E-Filing Services
    97%
  • Multi-State Tax Compliance
    94%
  • Quarterly Tax Filings & Estimated Payments
    91%
  • IRS & State Tax Matters
    96%
  • Small Business Operations
    95%
  • Business Consulting & Advisory Services
    90%
  • Bookkeeping & Financial Reporting
    96%
  • Payroll Administration
    93%
  • Retail & Multi-Location Business Management
    97%
  • Real Estate Transactions & Investment Analysis
    90%
  • Business Acquisitions & Growth Strategy
    94%

Let’s Build Your Financial Future Together.

Book Your Free Consultation Today