On-Time GST Return Filing (GSTR) | Monthly Compliance in Hyderabad
Complete GSTR-1 & GSTR-3B filing with careful reconciliation. Stay ahead of every GST deadline. Accurate compliance, reconciliation, and ITC tracking. ₹800/month includes all filings and support. 500+ businesses trust us.
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What Changed in 2026
Three updates every monthly filer should act on
GSTR-3B is now hard-validated. The GST portal blocks submission when the ITC you claim exceeds the ITC reflected in your GSTR-2B. Filing from your purchase register and reconciling later no longer works, so 2B reconciliation has to happen before the 20th. See our guide on the [Zero Mismatch Policy blocking GSTR-3B](/blog/gstr-3b-blocked-zero-mismatch-policy-2026).
IMS deemed acceptance is live. Every supplier invoice appears in the Invoice Management System for you to accept, reject, or keep pending before GSTR-2B is generated. Inaction counts as acceptance. Read [how IMS changes the GST workflow](/blog/ims-invoice-management-system-mandatory-gst-2026).
GST 2.0 rates apply. The four-tier structure (0%, 5%, 18%, 40%) has been in force since 22 September 2025; the 12% and 28% slabs were removed. If you billed any post-change supply at an old rate, issue a revised invoice or credit note to keep your buyer's GSTR-2B clean.
What Is GST Return Filing (GSTR)?
Understanding GSTR
GSTR (GST Return) is your monthly tax compliance report filed with GST authorities. It includes:
GSTR-1: Sales invoices report (who you sold to)
GSTR-3B: Summary of sales, purchases, GST liability, and tax payment
Both forms must be filed by deadlines (11th & 20th respectively) to maintain GST compliance.
Applicable Law & Timeline
Law: GST Act 2017, GST Rules 2017, GST portal regulations
Filing Deadlines (FY 2026-27):
- GSTR-1: 11th of following month (5% late fee if missed)
- GSTR-3B: 20th of following month (₹100-500/day penalty)
- GSTR-9: Annual return by 31st December
Authority: GST Portal (https://www.gst.gov.in)
Who Needs Monthly GST Filing?
For All GST-Registered Businesses
Mandatory if:
- You have active GSTIN
- You made any sales in the month
- You received any invoices
Frequency:
- Monthly for GSTR-1 & GSTR-3B (regular filers)
- Quarterly for GSTR-3B (composition scheme)
Penalty for Non-Filing:
- ₹500/day up to ₹25,000 (per return)
- Criminal prosecution possible
- GST credit blocked
GSTR-1 vs GSTR-3B: Understanding the Difference
| Aspect | GSTR-1 | GSTR-3B | Filing By |
|---|---|---|---|
| Purpose | Report all sales invoices | Summary of tax liability | Both mandatory |
| Data Required | Invoice-wise sales details | Total sales, purchases, tax | Both mandatory |
| Deadline | 11th of next month | 20th of next month | Strictly enforced |
| Late Filing Penalty | 5% of tax (max ₹25,000) | ₹100-500/day | Cumulative penalties |
Step-by-Step GSTR Filing Process
Step 1: Data Preparation (1-2 Days)
1. Collect all sales invoices from the month
2. Collect all purchase invoices/bills
3. Reconcile with bank statements
4. Identify GST-liable and exempted transactions
Your Action: Share invoice copies and bank statements
Step 2: GSTR-1 Filing (Same Day)
1. Log into GST Portal
2. Upload sales invoice data
3. System validates entries
4. Generate ARN (acknowledgment)
Our Action: We fill and submit online
Step 3: GSTR-3B Reconciliation (1-2 Days)
1. Verify GSTR-1 acceptance
2. Calculate input tax credit (ITC)
3. Determine GST liability
4. File GSTR-3B with tax liability
Our Action: Complete reconciliation
Step 4: Tax Payment & Confirmation (Before 20th)
1. Calculate final GST amount
2. Generate payment challan
3. Pay via bank/e-payment
4. File GSTR-3B with payment proof
Our Action: Ensure on-time payment
GSTR Filing Timeline & Deadlines
| Task | Timeline | Deadline | Penalty if Missed |
|---|---|---|---|
| Collect invoices | Throughout month | EOM | None |
| File GSTR-1 | 1-2 days after month-end | 11th of next month | 5% of tax due (max ₹25,000) |
| File GSTR-3B | 2-3 days after month-end | 20th of next month | ₹100-500/day |
| Pay GST | Before GSTR-3B filing | 20th of next month | Interest @ 24% p.a. + penalty |
GSTR Filing Fees & Pricing
Tax Garden Monthly GST Filing Services
| Service | Price | Includes | Timeline |
|---|---|---|---|
| Monthly GSTR Filing | ₹800/month | GSTR-1 & GSTR-3B | Same month |
| Quarterly Bundle | ₹2,100/quarter | 3 months filing | On schedule |
| Annual Plan | ₹8,000/year | 12 months + annual return | All deadlines |
| Add-On: ITC Optimization | ₹500/month | Maximum input credit claimed | Included in filing |
| Add-On: Reconciliation Support | ₹300/month | Monthly bank reconciliation | With filing |
Zero government fees. All charges are professional service fees.
Common GSTR Filing Mistakes
Mistake 1: Missing Invoices in GSTR-1
What goes wrong:
- Not reporting all sales invoices
- GST officer finds discrepancy in GSTR-3B
- Demand notice for unpaid tax + interest
How to avoid:
- Report all invoices (exempt and non-exempt)
- Match with bank deposits
- Use invoice tracking system
Mistake 2: Wrong ITC Claim
What goes wrong:
- Claiming input credit on non-taxable purchases
- Audit notice with demand for refund
- Interest penalties on wrongly claimed ITC
How to avoid:
- Only claim ITC on eligible purchases
- Keep supporting invoices
- Get professional advice on eligibility
Mistake 3: Late Payment
What goes wrong:
- File GSTR-3B but don't pay GST
- 24% annual interest + penalties
- Bank account flagged by GST authority
How to avoid:
- Pay GST before 20th of month
- Set payment reminders
- We can automate payment
GSTR-Related Penalties & Legal Consequences
| Violation | Penalty | Consequence | Prevention |
|---|---|---|---|
| Late GSTR-1 Filing | 5% of tax due (max ₹25,000) | Block on GSTR-3B filing | File by 11th |
| Late GSTR-3B Filing | ₹100-500/day | GST credit blocked, ITC revoked | File by 20th |
| Wrong ITC Claim | Interest (24% p.a.) + 50% penalty | Demand notice, audit | Verify eligibility |
| GST Non-Payment | Interest (24% p.a.) + 10% penalty | Prosecution possible | Pay on time |
Government Forms & GST Portal References
| Form | Purpose | Filing Deadline | Authority |
|---|---|---|---|
| GSTR-1 | Sales invoices report | 11th of next month | GST Portal |
| GSTR-3B | Monthly tax liability | 20th of next month | GST Portal |
| GSTR-9 | Annual return | 31st Dec (after FY) | GST Portal |
| GSTR-9C | Audit reconciliation (>₹2Cr) | 31st Dec | GST Portal |
Frequently Asked Questions
What is the difference between GSTR-1 and GSTR-3B?
GSTR-1 reports all your sales (invoice details). GSTR-3B is the tax summary (sales - purchases = GST liability). File both monthly.
What's the penalty for filing GSTR late?
GSTR-1: 5% of tax (max ₹25,000). GSTR-3B: ₹100-500/day. Plus interest on unpaid GST.
When should I file GSTR?
GSTR-1 by 11th of next month, GSTR-3B by 20th of next month. Miss either = penalty.
What is ITC (Input Tax Credit)?
Tax you paid on business purchases can be claimed as credit against your GST liability. GSTR-3B shows this calculation.
Do I need to file if I have no sales?
Yes. File nil GSTR even with zero sales to maintain compliance. Failure = penalty.
Can I file GSTR manually without software?
Technically yes via GST Portal, but it's error-prone. We automate it to ensure accuracy.
What happens if I don't file GSTR?
₹500/day penalty (₹25,000 max per return), ITC revoked, credit blocked, prosecution possible.
How do I calculate my GSTR-3B tax amount?
Sales GST - Purchase GST - ITC = Tax to pay. We do this calculation in your filing.
Can I amend a filed GSTR?
Yes, within 30 days file GSTR amendment. After 30 days, credit note needed.
What documents do I need for GSTR filing?
Sales invoices, purchase invoices, bank statements, credit/debit notes. That's it.
Do I pay GST after filing GSTR-3B?
Yes. GSTR-3B shows the amount due. You generate a challan and pay before filing deadline.
Is GST filing monthly or quarterly?
Monthly filing (GSTR-1 & 3B) for most. Quarterly only for composition scheme businesses.
Can we file GSTR in bulk for previous months?
Yes, we can file back-filings (catch-up). Penalties still apply but we minimize interest.
What if my GSTR-1 and bank statements don't match?
Reconcile: invoices should match deposits. Outstanding invoices need reconciliation.
How does ITC reconciliation work in GSTR-3B?
ITC claimed = Input invoices received. We match GSTR-2A with your actual purchases.
What's GSTR-2A and how is it used?
GSTR-2A shows invoices from your vendors. Match with your actual purchases for ITC.
Can you help with ITC optimization?
Yes. We identify all eligible purchases and maximize your input credit claims (₹500/month add-on).
What if I have exempt sales in GSTR-1?
Report separately in GSTR-1. Exempt sales don't attract GST. ITC on their cost may be denied.
Do I need annual GSTR-9?
Yes, file GSTR-9 (annual return) by 31st December. If turnover >₹2 crore, also file GSTR-9C with audit.
How much is your GST filing service?
₹800/month for GSTR-1 & GSTR-3B. ₹2,100/quarter for quarterly plans. ITC optimization ₹500/month add-on.
Why Hyderabad Businesses Choose Tax Garden for GST Compliance
Based in Kondapur, we serve Hyderabad's growing business ecosystem with accurate, on-time GSTR filing. From HITEC City startups to established businesses in Gachibowli, Financial District, and Madhapur, 500+ companies trust us for diligent GST compliance. Stay ahead of every deadline, optimize your GST, and reduce exposure to penalties.
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Why Tax Garden for GST Return Filing?
Reliable on-time filing to reduce exposure to late penalties
Careful reconciliation: 500+ monthly returns processed
ITC optimization: maximize your input credit claims
Bank reconciliation included: verify every deposit
Automatic payment reminders: never miss GST due date
Same-day filing support: file within 2-3 days of month-end
Kondapur office for easy accessibility and queries
Lifetime compliance support beyond just filing
Questions? Our team is here to help.