Goods and Services Tax (GST) compliance is one of the most critical obligations for businesses operating in India — and getting it wrong can be costly. For small and medium businesses in Pimpri Chinchwad and Pune, navigating monthly returns, input tax credit, and annual filings can feel overwhelming.
This practical checklist covers everything your business needs to stay compliant in 2025 — from registration thresholds to common mistakes that attract notices.
1. GST Registration — Are You Required to Register?
The first question every business must answer: do you need GST registration?
| Business Type | Turnover Threshold |
|---|---|
| Regular businesses (goods) | ₹40 Lakhs per annum |
| Regular businesses (services) | ₹20 Lakhs per annum |
| Special category states | ₹10 Lakhs per annum |
| E-commerce operators / sellers | Mandatory regardless of turnover |
| Inter-state supply of goods | Mandatory regardless of turnover |
💡 Pro tip: Even if your turnover is below the threshold, voluntary registration can help you claim Input Tax Credit (ITC) and appear more credible to larger clients who prefer to work with registered vendors.
2. Filing Deadlines — Don't Miss These Dates
Missing GST filing deadlines attracts late fees (₹50/day for GSTR-3B, minimum ₹500) and interest at 18% per annum on tax due. Here are the key dates every business must track:
| Return | Who Files | Due Date |
|---|---|---|
| GSTR-1 | All regular taxpayers (outward supplies) | 11th of next month (monthly) / 13th (quarterly) |
| GSTR-3B | All regular taxpayers (summary return) | 20th of next month |
| GSTR-9 | Annual return (turnover > ₹2 Cr) | 31st December |
| GSTR-9C | Reconciliation statement (turnover > ₹5 Cr) | 31st December |
| CMP-08 | Composition scheme taxpayers | 18th of month after quarter |
ℹ️ QRMP Scheme: If your annual turnover is up to ₹5 Crore, you can opt for the Quarterly Return Monthly Payment (QRMP) scheme — file GSTR-1 and GSTR-3B quarterly, but pay tax monthly via challan.
3. Input Tax Credit (ITC) — Are You Claiming Correctly?
ITC is one of the biggest benefits of GST — you can offset the GST you paid on purchases against your GST liability. But it comes with strict conditions:
- You possess a valid tax invoice or debit note issued by a registered supplier
- You have received the goods or services
- The supplier has filed their GSTR-1 and the invoice appears in your GSTR-2B
- You have paid the supplier within 180 days of invoice date
- The goods/services are used for business purposes (not personal use)
- ITC is claimed within the due date of filing GSTR-3B for September of the next financial year
⚠️ Important: ITC on motor vehicles, food & beverages, membership fees, and personal expenses is blocked and cannot be claimed. Many businesses inadvertently claim blocked credits and face notices.
4. E-Invoicing — Is It Mandatory for You?
E-invoicing under GST is now mandatory for businesses with aggregate turnover exceeding ₹5 Crore in any financial year from 2017-18 onwards. Key points:
- Invoices must be generated on the Invoice Registration Portal (IRP) and will receive a unique IRN and QR code
- Non-compliance means the invoice is treated as invalid — ITC cannot be claimed by the buyer
- B2C transactions, exempted supplies, and certain sectors are excluded
Most modern accounting software (Tally, Zoho Books, Busy) is integrated with the IRP for automatic IRN generation.
💡 Pro tip: Engage a CA for monthly GST filing. The cost of getting it wrong — in penalties, interest and notices — far exceeds the CA's fee.
5. Common GST Mistakes to Avoid
Based on our experience handling GST compliance for hundreds of businesses in Pimpri Chinchwad and Pune, these are the most frequent errors that lead to notices and penalties:
- Filing GSTR-3B without reconciling with GSTR-2B, leading to ITC mismatches
- Not reversing ITC when payment to supplier is not made within 180 days
- Incorrectly classifying HSN/SAC codes, attracting wrong tax rates
- Missing reverse charge mechanism (RCM) liability on certain purchases
- Not filing nil returns on time (late fees apply even for nil returns)
- Claiming ITC on blocked credits (motor vehicles, food, membership)
- Not reconciling books with GST returns before filing annual return
6. GST Annual Compliance Checklist (FY 2024-25)
- Reconcile GSTR-1 with books of accounts for the full year
- Reconcile GSTR-3B with GSTR-2B for ITC claimed vs available
- Ensure all pending ITC is claimed before the September due date
- Verify and update HSN summary if applicable
- File GSTR-9 (Annual Return) before 31st December 2025
- File GSTR-9C (Reconciliation Statement) if turnover exceeds ₹5 Crore
- Maintain all tax invoices, credit notes and debit notes for 6 years