GST confuses most startup founders. Too many forms, deadlines, and penalties. But it doesn't have to be complicated. Here's everything you need to know — explained simply, without jargon.
Do You Need GST Registration?
You must register if your annual turnover exceeds ₹40 lakhs for goods or ₹20 lakhs for services. But you should register voluntarily if you sell to other businesses (B2B) or plan to sell on marketplaces like Amazon or Flipkart — they require a GSTIN.
Voluntary GST registration lets you claim Input Tax Credit (ITC) on purchases, which can significantly reduce your effective tax cost even before you hit the mandatory threshold.
Understanding GST Returns
GSTR-1 — Your Sales Report
Report all your outward supplies (sales) here. If your annual turnover is below ₹5 crores, you can opt for the QRMP scheme and file quarterly instead of monthly. Deadline: 11th of the following month.
GSTR-3B — Your Tax Payment
This is the summary return where you actually pay your GST liability. You offset your tax collected on sales against your Input Tax Credit from purchases. Deadline: 20th of the following month. Late filing attracts ₹50/day penalty — ₹25 each under CGST and SGST.
5 Steps to Stay Compliant
Use GST-Compliant Accounting Software
Stop using spreadsheets. Use Tally, Zoho Books, or QuickBooks — they auto-generate GST returns from your invoices.
Issue Proper Invoices Every Time
Every invoice must include your GSTIN, invoice number, date, customer's GSTIN, HSN/SAC code, and itemised GST amount.
Reconcile Monthly (2A-2B Reconciliation)
Match your purchase records against what your suppliers have reported. Mismatches block your ITC claims.
Set Calendar Reminders for All Deadlines
GSTR-1 on the 11th, GSTR-3B on the 20th. Mark them and never miss. ₹50/day adds up fast.
Keep Records for 6 Years
The GST Act requires you to maintain all invoices and bills for 72 months. Use cloud storage — it's cheap insurance.
Many startups forget to reconcile their ITC before filing GSTR-3B. Claiming ITC that your supplier hasn't uploaded leads to notices from the GST department — always reconcile first.
The Bottom Line
GST compliance is not optional — and the penalties for non-compliance compound quickly. The good news is that with the right tools and a monthly routine, it takes less than 2 hours per month to stay fully compliant.
Let Us Handle Your GST Compliance
Hawkfin manages end-to-end GST compliance for startups and MSMEs — registrations, monthly filings, reconciliation, and notices.
Get GST Help →