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GST Return Filing Services

Monthly GSTR-1 and GSTR-3B filings plus annual GSTR-9, handled end-to-end by a dedicated CA on your account. No portals, no missed deadlines, no penalties.

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Response within 30 mins during business hours

The Recurring Rhythm.

Every month follows the same cycle. We handle three of the four steps. You approve at the end.

Day 1–5

We collect

Sales register, purchase register, and expense data pulled from your books or shared by your team. We flag anything missing before reconciliation.

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Day 6–9

We reconcile

Match purchase register against GSTR-2B. Flag mismatches, missing invoices, and ineligible credit. You see the report before we file.

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By Day 10

We file GSTR-1

Outward supplies return filed by the 11th, a full day before the deadline. You receive ARN confirmation immediately.

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By Day 19

We file GSTR-3B

Summary return and tax payment computed and filed by the 20th. You approve the net liability before we pay.

↺ Repeats every month. Annual GSTR-9 filed by 31 December.

What Is GST Return Filing?

GST Return Filing is the monthly and quarterly compliance every GST-registered business must complete. The process is recurring, automated through the GST portal, and unforgiving on deadlines. The two core monthly returns, GSTR-1 (outward supplies) and GSTR-3B (summary plus tax payment), have fixed due dates of the 11th and 20th of the following month respectively. The GSTR-9 annual return is due by 31 December of the following financial year.

Filing is mandatory regardless of revenue, even if you had zero transactions that month. Missed filings attract daily late fees, block input tax credit for your buyers, and damage your GST compliance rating. Persistent default can lead to GSTIN suspension. The compliance load is small per filing but constant: a typical growing business spends 6–8 hours per month on the cycle if done in-house, more during quarter-end and year-end.

What's involved each cycle

Each month combines four jobs: data collection, reconciliation against GSTR-2B (auto-populated by the GST portal), tax computation after applying eligible input credit, and filing of the two returns. The reconciliation step is the most time-consuming and the highest-risk: missed or mismatched invoices reduce your input credit and create future disputes with suppliers.

Why outsource vs do it in-house

The cost of one missed GSTR-3B filing on a ₹2 lakh monthly liability is roughly ₹5,000 in late fees, ₹3,000 in interest, and blocked input credit for your buyers, who will switch vendors rather than wait. Delegating to a compliance firm replaces 6–8 hours of monthly work with predictable handoffs and removes the penalty risk entirely. For most early-stage companies, the math favors outsourcing from day one.

What Gets Done Each Cycle.

Six recurring activities. Each tagged by frequency. Anything not listed is an add-on; we never bill you for surprises.

Sales register prep

Monthly

Compile all sales invoices for the month, format per GSTR-1 schema, validate HSN/SAC codes and place of supply.

Input credit matching

Monthly

Reconcile purchase register against GSTR-2B. Flag missing or mismatched invoices for vendor follow-up before filing.

GSTR-1 filing

Monthly

Outward supplies return filed by the 11th. Includes B2B, B2C, exports, credit notes, and debit notes.

GSTR-3B filing

Monthly

Summary return and tax payment. Net liability computed after eligible input credit. Filed by the 20th, after your approval.

Annual return (GSTR-9)

Annual

Consolidated annual return summarising the full financial year. Filed by 31 December. Reconciliation with books done before filing.

Notice response

As needed

If a GST officer raises a query or notice, we draft and file the response within the prescribed window. Included up to a fair-use limit.

When You Need Us to Handle This.

Getting professional help on GST compliance is a service decision, not a legal one. Here's when it makes sense and when it doesn't.

Get help if

You have a GST registration. Filing is mandatory regardless of revenue. Even nil returns must be filed every month, with late fees from day one of default.
Your monthly invoice count exceeds 50. Manual filing becomes error-prone at scale, and reconciliation against GSTR-2B starts taking real time.
You've missed deadlines or received notices before. A dedicated CA on the account stops the cycle from repeating, and protects your compliance rating.
You operate across multiple states. Each GSTIN has its own monthly returns. Filing across 2–3 states without errors is genuinely hard in-house.
You sell B2B and your buyers care about input credit. Late or wrong filing blocks credit for your buyers. They will switch vendors rather than wait.

Skip if

You don't have a GST registration yet. Start with registration. Filing services apply only after you have a GSTIN.
You file nil returns and have under 5 invoices per month. Your in-house effort is small enough that DIY may still be cheaper.
You have a full-time in-house finance team. Internal capacity beats outsourcing for high-volume businesses with skilled finance staff.
You only operate as a composition dealer with simple quarterly filings. CMP-08 is lower-effort than regular monthly filings; smaller dealers manage it in-house.

How We Work.

Six commitments. Same dedicated CA, every month, with response times you can plan around.

Dedicated CA on your account

Not a ticket queue. The same chartered accountant handles your filings every month. Personal accountability, not a hand-off chain.

WhatsApp & email access

Business-hours response. Urgent issues escalated within 2 hours. No more chasing emails into a void.

Filing 24 hours before deadline

No last-minute portal scrambles. Built-in buffer for corrections if something needs revisiting.

Document upload via portal or Drive

Pick your tool. We adapt to your workflow, not the other way around. CSV, Tally exports, Excel, all supported.

Notice response within 24 hours

GST officer queries drafted and filed before the response window narrows. Most notices we resolve without escalation.

Monthly summary report

What was filed, what input credit was claimed, what's flagged for next month. Read in 2 minutes, signed off in 1.

Penalties & Dues at a Glance.

Reference table for every default scenario. Verified against current CBIC notifications.

Default scenario

Penalty

Interest

Downstream impact

Late GSTR-1 filing

₹50/day, capped ₹5,000

N/A (no tax)

Buyers' input credit blocked

Late GSTR-3B filing

₹50/day, capped ₹5,000

18% p.a. on unpaid tax

GSTIN suspension after 6 months

Late nil return

₹20/day, capped ₹500

None

Compliance score drops

Mismatched ITC claim

Reversal + penalty

24% p.a. on excess

Notice + scrutiny risk

Missed GSTR-9 annual return

₹200/day, capped 0.5% turnover

N/A

Audit threshold lowered

GSTIN suspension

Operational halt

N/A

Cannot collect GST or issue invoices

Penalty figures current as per CBIC notifications. Verify against the latest notification before relying on for compliance decisions.

Frequently Asked Questions.

Yes. Nil returns are mandatory for every GSTR-1 and GSTR-3B cycle, regardless of whether you had any transactions. Late filing of nil returns attracts ₹20/day in late fees (capped at ₹500). The penalty is smaller than for non-nil returns, but missing them still drops your GST compliance rating and creates a recurring red flag for officers.

We work with a built-in buffer. If your data arrives by Day 5 of the month, we file by Day 10 (GSTR-1) and Day 19 (GSTR-3B), a full day before the legal deadlines. If you send data later, we still file on time wherever possible. If data lands after Day 18, we flag the risk to you in writing and file on best-effort basis. Persistent late data sharing is the one scenario where outsourcing cannot fully eliminate the risk.

Yes. Mid-year transitions are routine. We coordinate with your current CA to pull historical filings, reconcile against your books, and pick up from the next cycle without disruption. The transition itself usually takes 7–10 days; you don't miss a filing during handover. Free migration is included in all our engagement plans.

A qualified chartered accountant signs off on every filing. Your account is owned by a named CA, not a generic ticket queue. For high-volume tasks like data entry and reconciliation, associates may assist under the CA's review, which is standard professional services practice. The CA remains accountable for accuracy and is the person you talk to.

Yes. We reconcile every purchase invoice on your books against the corresponding entry in GSTR-2B (the auto-populated input credit document on the GST portal). Mismatches, missing supplier filings, and ineligible credit (under Section 17(5) of the CGST Act) are flagged for action. The reconciliation report is shared with you before GSTR-3B filing each month.

Yes, this is included in our scope. If a GST officer raises a query or issues a notice, we draft the response, gather any supporting documents, and file within the prescribed window. Most notices are resolved at the first response level. For complex notices requiring scrutiny or audit-level engagement, those become a separate scope conversation.

Yes. Multi-state filings are common for our growing-business clients. Each GSTIN has its own monthly filing cycle, so the workload scales with each additional state, but the structure stays the same: same dedicated CA, same monthly rhythm, separate filings.

Pricing depends on transaction volume (invoices per month), number of GSTINs, and whether you need add-ons like e-way bill management or notice handling. Reach out and we'll give you an exact quote based on your volume and structure. We never charge per filing or by the hour; pricing is predictable monthly.

Yes. We work with whatever tool you already use: Tally, Zoho Books, QuickBooks, Razorpay Books, custom ERPs, or even just Excel. For most clients we pull data via exports; for higher-volume clients we set up API or scheduled extracts. We don't force you to migrate tools.

GST returns can be amended in the following month's filing (Table 9 of GSTR-1 or relevant table in GSTR-3B). If an error is caught, we correct it in the next return at no additional cost. If the error has tax implications (under-reported liability), we coordinate the differential tax payment with interest. Major errors get a full root-cause review.

Yes. Our engagement is month-to-month after the initial 3-month commitment. We provide a clean handover pack with all filings, working papers, reconciliations, and a 30-day overlap period if needed. No exit fees. The 3-month minimum is to ensure we have time to clean up legacy issues before judging the engagement quality.

Filing is the core scope. Advisory questions that come up during routine filing (place of supply, RCM applicability, ITC eligibility on a specific expense) are handled inline as part of the monthly engagement. Deeper advisory work like representing you in audits, restructuring exports/SEZ flows, or major business model changes are scoped separately when needed.

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