office@gsmco.net.in
 
     
   
 

Our Vision

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Our Motto

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Our Strength

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IMPORTANT DATES : > "Payment of TDS/TCS of May. In case of government offices where TDS/TCS is paid by book entry, same shall be paid on the same day on which tax is deducted or collected." : 07/06/2026      > "Seller to upload declarations received in May, from buyers for non-deduction of TCS. " : 07/06/2026      > Return of External Commercial Borrowings for May. : 07/06/2026      > Monthly Return by Tax Deductors for May. : 10/06/2026      > Monthly Return by e-commerce operators for May. : 10/06/2026      > Monthly Return of Outward Supplies for May. : 11/06/2026      > Monthly Return by Non-resident taxable person for May. : 13/06/2026      > Monthly Return of Input Service Distributor for May. : 13/06/2026      > Optional Upload of B2B invoices, Dr/Cr notes for May under QRMP scheme. : 13/06/2026      > Free update of Aadhar. Update and upload your Proof of Identity & Proof of Address documents. : 14/06/2026      > Issue of TDS Certificate for tax deducted u/s 194-IA on payment made for purchase of property in April. : 14/06/2026      > Issue of TDS Certificate for tax deducted on rent above 50,000 pm by certain individuals/HUF under Section 194-IB where lease has terminated in April. : 14/06/2026      > Issue of TDS Certificate for tax deducted u/s 194M on certain payments by individual/HUF in April. : 14/06/2026      > Issue of TDS Certificate for tax deducted u/s 194S on Virtual Digital Assets in April. : 14/06/2026      > E-Payment of PF for May. : 15/06/2026      > Payment of ESI for May : 15/06/2026      > Deposit of First Instalment of Advance Tax (15%) by all assessees (other than 44AD & 44ADAD cases). : 15/06/2026      > Issue of Salary TDS Certificates for FY 25-26. : 15/06/2026      > Issue of other TDS Certificates for Q4 of FY 25-26. : 15/06/2026      > Details of Deposit of TDS/TCS of May by book entry by an office of the Government. : 15/06/2026      > Monthly Return by persons outside India providing online information and data base access or retrieval services, for May. : 20/06/2026      > Add/amend particulars (other than GSTIN) in GSTR-1 of May. It can be filed after filing of GSTR-1 but before filing corresponding GSTR-3B. : 20/06/2026      > Summary Return cum Payment of Tax for May by Monthly filers. (other than QRMP). : 20/06/2026      > Deposit of GST of May under QRMP scheme. : 25/06/2026      > Return for May by persons with Unique Identification Number (UIN) like embassies etc to get refund under GST for goods and services purchased by them. : 28/06/2026      > Return of Statutory Compliances within 90 days from the close of the first financial year after its incorporation and where applicable,the second financial year. : 29/06/2026      > Annual Return of Deposits by Companies other than NBFCs for FY 25-26. : 30/06/2026      > "Director’s Disclosure of Interest and Non-disqualification by Companies. Discloses Director’s interest in the Companies, Firms, Body Corporates and Association of Individuals. " : 30/06/2026      > "Yearly Disclosure of Non- Disqualification by Directors of all companies. Discloses Director’s interest only in Companies. " : 30/06/2026      > Holding of Board Meeting by Companies for Q1 . : 30/06/2026      > Online annual updation of IEC details . If no changes, confirm same online. Else IEC will be deactivated. : 30/06/2026      > Summary of Outward & Inward supplies for FY 25-26 by Composition taxpayer. : 30/06/2026      > Quarterly return of non-deduction at source by banks from interest on time deposit for January-March quarter. : 30/06/2026      > Deposit of TDS u/s 194-IA on payment made for purchase of property in May. : 30/06/2026      > Deposit of TDS u/s 194-IB @ 5% on total payment of Rent more than 50,000 pm by individual or HUF (not liable to tax audit) during FY 25-26, where lease has terminated in May. (Else TDS is to be deposited on annual basis by 30 April of next year.) : 30/06/2026      > Deposit of TDS on certain payments made by individual/HUF u/s 194M for May. : 30/06/2026      > Deposit of TDS on Virtual Digital Assets u/s 194S for May. : 30/06/2026      > Deposit of TDS on Virtual Digital Assets u/s 194S for May. : 30/06/2026      > Annual Return of Securities Transaction Tax by Listed Cos/Mutual Funds for FY 2025-26 . : 30/06/2026     
 
     
   
 

Background

Over 68 Years of excellence in professional services

G.S. Mathur & Co. is a professional firm established in the year 1950 providing a bouquet of services including Audit & Assurance, Tax & Regulatory, Advisory & Consultancy Services, Accounting & Business Support and Financial Services. It has consistently ranked amongst the top professional advisory firms in India and has a well established reputation for delivering quality and excellence in all its services. It strives to attain this by blending domain expertise with analytical rigor, while maintaining an uncompromising focus on quality, and by hiring and nurturing high quality professionals with a passion for excellence. It has enhanced value for the clients by providing practical and innovative solution tailored to client’s specific need.

The firm has developed expertise in Management Solutions, the managing partner Mr. Ajay Mathur having been nominated by the Government of India as Director under the Chartered Accountant category on the boards of leading Public Sector Banks in India, firstly Canara Bank and thereafter Bank of Baroda, for periods of three years each.

 
 
Business Advisory including Corporate level solution to complex Management and Legal issues Development of system, study of system and design.
Audit and Assurance is a large part of the firm's practice and is the core service offering. The firm provides these services to companies across almost all sectors ranging
G.S. Mathur & Co. is well positioned to offer individuals and companies comprehensive tax services. Our tax professionals are selected for their commitment
 
 
     
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