GST returns filed every month — ₹499, reminders included
Late fees are not caused by tax law; they are caused by the 11th and the 20th arriving faster than anyone expects. For a flat ₹499 a month, a registered GST practitioner runs your return calendar: chases the data, checks it, files GSTR-1 and GSTR-3B on time, and sends you the acknowledgement.
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GSTR-1 and GSTR-3B — two returns, one story
A regular taxpayer's month revolves around two filings that must agree with each other. GSTR-1, due by the 11th, is the detail return: every outward supply, invoice by invoice, with GSTINs, values and tax. It matters beyond your own compliance because your buyers' input credit flows from it — file late or wrong, and it is their GSTR-2B that breaks, which is how business relationships sour.
GSTR-3B, due by the 20th, is the settlement return: a summary of outward liability and input credit, netted, with the balance paid in cash. It is where tax actually leaves your bank account. The department's scrutiny systems continuously compare the two returns — and compare your claimed credit against what suppliers reported — so the real work of filing is not typing figures into the portal. It is making sure the figures reconcile before anything is submitted. Our explainer GSTR-1 vs GSTR-3B unpacks the relationship with worked examples.
The QRMP option — fewer filings, same discipline
If aggregate turnover is within ₹5 crore, you can opt into the Quarterly Return, Monthly Payment scheme. The filings become quarterly — GSTR-1 by the 13th after the quarter and GSTR-3B by the 22nd, since Gujarat falls in Category X of the state grouping — but tax for the first two months of each quarter is still deposited monthly through PMT-06 by the 25th. B2B sellers can also push invoices monthly through the optional IFF so buyers receive credit without waiting for the quarter to close.
QRMP is genuinely useful for small businesses, but it is not "GST once a quarter" — the monthly payment estimate still has to be made carefully, and an underpaid PMT-06 quietly builds an interest liability. We advise on the monthly-versus-quarterly choice when you join, and revisit it if your turnover pattern changes; our QRMP explainer sets out the mechanics if you want the full detail. The fee does not change either way: ₹499 a month covers whichever cycle you are on.
Our monthly rhythm — what happens, and when
- Reminder — start of the monthYou get a WhatsApp nudge listing exactly what to send for the period just ended. No template spam; it names your business and your pending items.
- Data in — by around the 5thSales and purchase data arrives however you keep it: software exports, Excel, or invoice photos for the smallest businesses. We chase once, politely, if it is late — because your deadline is our deadline.
- Check and reconcileWe tie your figures to the portal's auto-drafted data, match input credit against supplier filings, and query every gap with you before — not after — anything is filed.
- File GSTR-1, then GSTR-3BGSTR-1 goes first, ahead of the 11th; the tax computation follows, you approve the cash payable, the challan is paid and GSTR-3B is filed before the 20th (or the QRMP equivalents on their dates).
- Confirmation — same day as filingYou receive the acknowledgement and reference number on WhatsApp, plus a one-line summary of tax paid and credit used. Everything is archived for your year-end.
That is the whole engagement: one data handover a month from you, everything else from us. You can verify any filing independently on the portal's returns dashboard at gst.gov.in — we would rather you check than trust blindly.
What missing a deadline actually costs
Two meters start running the day a deadline passes — a late fee per return, and interest on unpaid tax:
| Lapse | Charge | Cap |
|---|---|---|
| GSTR-1 / GSTR-3B late, with liability | ₹50 per day (₹25 CGST + ₹25 SGST) | ₹2,000 (turnover ≤ ₹1.5 cr) · ₹5,000 (₹1.5–5 cr) · ₹10,000 (> ₹5 cr) |
| GSTR-1 / GSTR-3B late, nil return | ₹20 per day (₹10 + ₹10) | ₹500 per return |
| Tax paid after the due date | Interest at 18% p.a. on net cash liability | No cap — runs until paid |
| ITC wrongly availed and utilised | Interest at 24% p.a. | No cap |
Note that late fees apply per return — a business that goes quiet for four months faces eight accumulating fees across GSTR-1 and GSTR-3B, plus interest, before a single rupee of actual tax. And because GSTR-3B cannot be filed for a period until earlier ones are in, arrears compound into a queue. The maths is laid out fully in our late fees and interest explainer; if you are already behind, our notice desk handles the GSTR-3A demands that usually follow.
Two 2025 changes that made sloppy filing expensive
GSTR-3B is now hard-locked. From the July 2025 tax period, the auto-populated outward-supply figures in Table 3 of GSTR-3B are non-editable. The old habit of fixing a GSTR-1 mistake by quietly adjusting GSTR-3B at filing time is gone — corrections must go through GSTR-1A before GSTR-3B is filed. Practically, the accuracy deadline moved from the 20th to the 11th, and filing services that treat GSTR-1 as a formality now generate errors that take a month to unwind.
Old returns now expire. Since 1 August 2025 the portal enforces a three-year bar: any GST return more than three years past its due date simply cannot be filed, ever. What used to be a "we'll regularise it someday" problem is now a permanent one — unfiled periods eventually harden into blocked credit, unprocessable refunds and complications if you ever want a clean cancellation. If you are carrying old gaps, clearing them oldest-first is genuinely urgent, and we will price that catch-up work as a fixed quote before starting.
Changes like these arrive several times a year, which is much of the argument for a practitioner-run calendar over a DIY one. For notification-level analysis of each change, our GST specialist site GujaratGST.in tracks them in depth.
What we can and cannot do
When you do NOT need a filing service
If your GSTIN is dormant — no sales, no purchases, no plans — paying anyone monthly to file nil returns may be the wrong answer. Sometimes the honest advice is to cancel the registration and stop the obligation entirely. We will say so if that is your situation, and point you to the cancellation process instead of a subscription.
We file and advise — the department decides
We prepare and file your returns from the data you provide and flag everything we catch. But the figures are ultimately yours: we cannot invent invoices, manufacture credit, or make a scrutiny question disappear. Assessment, refunds and the outcome of any notice rest with the tax officer — our job is to make sure your filings give the officer nothing to find.
The bottom line
If you have read this far, you know more than most agents will ever tell you. The next step is simple: send us your case on WhatsApp, get the exact fee and timeline in writing, and decide with full information. That quote costs nothing.
Return filing — common questions
What is the difference between GSTR-1 and GSTR-3B?
What exactly does the ₹499 per month cover?
Do I have to file returns in months with no sales?
What are my due dates as a monthly filer?
How does QRMP change the calendar?
What is the late fee if a return is missed?
How is interest charged on late tax payment?
What changed in GSTR-3B from July 2025?
What is the three-year bar on old returns?
How do you collect my sales and purchase data each month?
Can I switch to you if another accountant files my returns now?
Will I get proof that my return was filed?
Hand over the calendar before the next 11th
Message us your GSTIN and how you currently keep sales records. We review your filing history, confirm the ₹499/month scope in writing, and your next return goes out on time.