CA Firm Compliance Calendar 2026-27: GST, ITR, TDS and ROC Due Dates

For CA firms in India, compliance work never really stops. GST returns, income tax filings, TDS statements, ROC deadlines, and client follow-ups happen throughout the year, which makes deadline tracking one of the most important parts of practice management.

A clear compliance calendar helps CA firms stay organized, reduce missed filings, and improve internal coordination. Instead of reacting at the last minute, firms can plan work in advance and manage recurring obligations with more confidence.

Why a compliance calendar matters

CA firms handle multiple clients across different compliance cycles. Some clients need monthly GST filings, some need quarterly TDS returns, and others have annual ROC and income tax obligations. When this work is tracked manually, even a small delay can create penalties, repeated follow-ups, and avoidable stress.

That is why many firms now use a structured calendar to track filing dates across GST, ITR, TDS, and ROC work. It gives the team a single view of what is due, what is pending, and what needs attention next.

GST due dates for FY 2026-27

GST is one of the most frequent compliance areas for CA firms. Monthly filers usually track GSTR-1 and GSTR-3B, while QRMP taxpayers follow their own quarterly schedule.

Common GST dates to remember:

• GSTR-1: 11th of the following month.
• GSTR-3B: 20th of the following month for monthly filers.
• QRMP GSTR-3B: 22nd or 24th of the month following the quarter, depending on the state.
• CMP-08: 18th of the month following the quarter for composition taxpayers.
• GSTR-9 annual return: 31st December 2027 for FY 2026-27.

GST due dates are repeated every cycle, which makes them ideal for automation. That is where tools like SNexa GST Pro – GST Return Preparation & Compliance Management Software become useful for firms that want a more reliable filing workflow.

ITR and advance tax dates

Income tax deadlines are another major reason CA firms need a proper compliance calendar. Advance tax dates and return filing dates often create peak workload periods, especially around the middle and end of the financial year.

Key income tax dates for FY 2026-27:

• Advance tax first installment: 15th June 2026.
• Advance tax second installment: 15th September 2026.
• Advance tax third installment: 15th December 2026.
• Advance tax final installment: 15th March 2027.
• ITR filing dates vary by taxpayer category, including audit and non-audit cases.

For firms handling a large client base, these deadlines are easy to overlook unless they are tracked in one centralized system. A tool like SNexa GST Pro – GST Return Preparation & Compliance Management Software can help keep recurring compliance work visible and better organized.

TDS due dates

TDS is one of the most common monthly and quarterly compliance tasks for CA firms. It requires both timely deposit and correct quarterly return filing.

Typical TDS dates:

• Monthly TDS deposit: 7th of the following month.
• Q1 TDS return: 31st July 2026.
• Q2 TDS return: 31st October 2026.
• Q3 TDS return: 31st January 2027.
• Q4 TDS return: 31st May 2027.

Because TDS work is recurring, it is a strong candidate for automation. Firms that manage many clients can reduce follow-up stress by using SNexa GST Pro – GST Return Preparation & Compliance Management Software as part of their compliance workflow.

ROC due dates

ROC compliance adds another layer of responsibility for CA firms working with companies and LLPs. Annual forms, financial statement filings, and return submissions need to be monitored carefully.

Common ROC deadlines include:

• AOC-4 for financial statements.
• MGT-7 or MGT-7A for annual return filing.
• LLP forms such as Form 8 and Form 11, depending on entity type.

These filings are not as frequent as GST, but they are important because missing them can create serious issues for clients. A proper compliance calendar helps the firm plan ROC work well in advance.

How CA firms can use this calendar

A CA firm can use this calendar to:

• Track client-wise due dates.
• Assign work to team members.
• Reduce follow-up delays.
• Plan workload across the month.
• Avoid last-minute filing pressure.
• Improve billing and completion visibility.

This is also the right place to position your software offer, because the blog is already solving the exact problem the product addresses. SNexa GST Pro – GST Return Preparation & Compliance Management Software fits naturally here as the tool that helps manage GST-heavy compliance work more efficiently.

Final thoughts

The best CA firms do not rely on memory for compliance. They rely on a repeatable system that keeps deadlines visible, work assigned, and filings under control.

A proper compliance calendar is the first step. A software workflow is the next step. If the goal is to reduce missed deadlines and improve control over GST preparation and filing, SNexa GST Pro – GST Return Preparation & Compliance Management Software is a strong product link to place throughout the article.