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IMPORTANT DATES : > Monthly Return by Tax Deductors for December. : 10/01/2026 > Monthly Return by e-commerce operators for December. : 10/01/2026 > "Monthly Return of Outward Supplies for December. " : 11/01/2026 > Monthly Return of Input Service Distributor for December. : 13/01/2026 > Monthly Return by Non-resident taxable person for December. : 13/01/2026 > Quarterly return of Outward Supplies for October-December. (QRMP) : 13/01/2026 > Issue of TDS Certificate u/s 194-IA for TDS deducted on Purchase of Property in November. : 14/01/2026 > 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 November. : 14/01/2026 > Issue of TDS Certificate for tax deducted u/s 194M on certain payments by individual/HUF in November. : 14/01/2026 > Issue of TDS Certificate for tax deducted u/s 194S on Virtual Digital Assets in November. : 14/01/2026 > Statement of Foreign Remittances by Authorized Dealers for December quarter. : 15/01/2026 > Uploading declarations received in Form 15G/15H for December quarter. : 15/01/2026 > Contribution from Jul-Dec. Amount = No of employee as on 31 Dec X Rs 3 : 15/01/2026 > TCS Statements for December quarter. : 15/01/2026 > ESI payment for December. : 15/01/2026 > E-Payment of PF for December. : 15/01/2026 > Details of Deposit of TDS/TCS of December by book entry by an office of the Government. : 15/01/2026 > Payment of tax by Composition taxpayers for December quarter. : 18/01/2026 > Monthly Return by persons outside India providing online information and data base access or retrieval services, for December. Also to be filed by every registered person providing online money gaming from a place outside India to a person in India. : 20/01/2026 > Add/amend particulars (other than GSTIN) in GSTR-1 of Dec. It can be filed after filing of GSTR-1 but before filing corresponding GSTR-3B. : 20/01/2026 > Summary Return cum Payment of Tax for December by Monthly filers. (other than QRMP). : 20/01/2026 > Add/amend particulars (other than GSTIN) in GSTR-1 of Dec quarter by Quarterly filers in Chhattisgarh, Madhya Pradesh, Gujarat, Maharashtra, Karnataka, Goa, Kerala, Tamil Nadu, Telangana, Andhra Pradesh, the Union territories of Daman and Diu and Dadra and Nagar Haveli, Puducherry, Andaman and Nicobar Islands or Lakshadweep. . It can be filed after filing of GSTR-1 but before filing corresponding GSTR-3B. : 22/01/2026 > Summary Return of December quarter by Quarterly filers in Chhattisgarh, Madhya Pradesh, Gujarat, Maharashtra, Karnataka, Goa, Kerala, Tamil Nadu, Telangana, Andhra Pradesh, the Union territories of Daman and Diu and Dadra and Nagar Haveli, Puducherry, Andaman and Nicobar Islands or Lakshadweep. : 22/01/2026 > Add/amend particulars (other than GSTIN) in GSTR-1 of Dec quarter by Quarterly filers in Himachal Pradesh, Punjab, Uttarakhand, Haryana, Rajasthan, Uttar Pradesh, Bihar, Sikkim, Arunachal Pradesh, Nagaland, Manipur, Mizoram, Tripura, Meghalaya, Assam, West Bengal, Jharkhand or Odisha, the Union territories of Jammu and Kashmir, Ladakh,Chandigarh or Delhi. It can be filed after filing of GSTR-1 but before filing corresponding GSTR-3B. : 24/01/2026 > Summary Return of December quarter by Quarterly filers in Himachal Pradesh, Punjab, Uttarakhand, Haryana, Rajasthan, Uttar Pradesh, Bihar, Sikkim, Arunachal Pradesh, Nagaland, Manipur, Mizoram, Tripura, Meghalaya, Assam, West Bengal, Jharkhand or Odisha, the Union territories of Jammu and Kashmir, Ladakh,Chandigarh or Delhi. : 24/01/2026 > Return by persons with Unique Identification Number (UIN) like embassies etc to get refund under GST for goods and services purchased by them, for December . : 28/01/2026 > Issue of TCS certificate for December quarter by All Collectors : 30/01/2026 > Deposit of TDS u/s 194-IA on payment made for purchase of property in December. : 30/01/2026 > 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 24-25, where lease has terminated in December (Else TDS is to be deposited on annual basis by 30 April of next year.) : 30/01/2026 > Deposit of TDS on certain payments made by individual/HUF u/s 194M for December. : 30/01/2026 > Deposit of TDS on transfer of virtual digital asset u/s 194S, by an exchange, for December. : 30/01/2026 > TDS Statements for December quarter. : 30/01/2026 > Quarterly return of non-deduction at source by banks from interest on time deposit for December quarter. : 30/01/2026 > Annual Return by OPCs and Small Companies. : 31/01/2026 > Filing of financial statements by Cos (Other than OPCs) for FY 2024-25 with the ROC. (30 days from AGM.) : 31/01/2026 > Filing a report on Corporate Social Responsibility by every company covered u/s 135 of the Companies Act, 2013. : 31/01/2026

What We Do

Services

Startup 360

Launching a new business is exciting—but also overwhelming with multiple registrations and compliance needs.

Compliance Guru

Compliance deadlines don't wait—and missing them leads to penalties, interest, or notices.

A2A

Running a business requires more than just accounting—it needs financial leadership

Finova

As businesses grow, manual processes often lead to errors, delays, and compliance gaps.

About Us

Welcome to Acharya Business Consulting (ABiz) - Your Trusted Business Partner
At ABiz, we firmly believe in the symbiotic growth of our clients and our firm. We understand that when clients can focus on their business, unhindered by the complexities of ever-changing compliance landscapes, both they and our firm prosper. Our key principle is to deliver services promptly and accurately, ensuring our clients' peace of mind.

What's New

Our editors select a small number of the most important updates..
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Event Calendar

E-invoice to become Mandatory if turnover exceeds Rs.10..
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Career

We nurture and cultivate a sense pride in the work and create..
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Our

Team

B.S. Aparna

B.S. Aparna, a Chartered Accountant (FCA) and FMVA® certified professional, has over 14 years of experience in finance, accounting, compliance, and advisory. Her career has spanned diverse responsibilities including

B. Subbarao

Retired Chief Manager from Indian Overseas Bank with 38+ years of expertise in banking operations, financial management, risk assessment, and customer relationship management. Detail-oriented, analytical leader known for excellent problem-solving skills and strong teamwork.

R Premasudha

Retired Income Tax Officer with 38 years of expertise in tax laws, assessment, compliance, and planning. Meticulous and thorough professional known for exceptional organizational abilities and financial analysis skills.

Sreenivas Rao

Retired SBI Bank Officer with 38 years of expertise in investment strategies, stock trading, and financial planning. Proactive and result-driven professional with a strong focus on retail banking and exceptional customer service.

Knowledge Bank

Calculators

I found Aparna to be very professional, knowledgeable and always quick to respond! From audit to streamlining business processes she's always taken away the stress for management meeting deadlines and being compliant. Highly recommend her to any organisation!

Jasmine C.
Director, Book Review
June 2024

Aparna is a fast learner and provide solution in complex situations. She is a people person and develops professional relationship with everyone. She has not only the capability to execute but also build capacity of her team members through imparting training. Functional expertise with integrative thinking makes her a class apart.

Aparna advices me on tax and compliances. She is a knowledgeable Chartered Accountant and compliance's advisor. She provided bespoke consulting to setup my company and always been helpful whenever we need advice.

John Christopher J
Chief Executive @ Kings Cornerstone International College | Transnational Education Expertise
June 28, 2020, John Christopher was Aparna's client

Aparna has been a valuable asset to my business. She is very responsive to all my business needs. Her advice on various accounting and audit matters have helped me to complete all my financial and regulatory obligations. She understands business requirements very well and her forte is timeliness and flexibility.

We from Veenavaadhini and J3 would highly recommend her for her professional services. God Speed!

JT Jeyaraaj Krishnan
Co-Founder at J3 BankingLab
March 5, 2024, JT Jeyaraaj was Aparna's client

33, Marvel Review View County Marriamman Koil Street Manapakkam Chennai-600116
+91- 9884110598
aparna@bsaa.in