GST basics every small business website owner should know

GST trips up more small business owners than almost any other compliance topic, partly because the rules are genuinely fiddly and partly because most explanations are written for chartered accountants, not shopkeepers. This guide covers the GST basics that actually matter once you have a website and are selling to customers. It is written in plain English. It is not legal advice, and for anything specific you should talk to a CA, but it will help you ask the right questions.

What GST is, in one paragraph

GST, the Goods and Services Tax, is a single indirect tax that replaced the older mess of VAT, service tax, and others in 2017. You collect it from your customers on top of your price, and you pay it to the government, minus the GST you already paid on your own purchases (called input tax credit). For most small businesses the practical questions are simpler than the theory: do I need to register, what do I charge, and what must my invoice and website show.

Do you even need to register?

Not every small business needs GST registration. The thresholds, as a general rule, are:

• Goods: registration is required once your annual turnover crosses ₹40 lakh in most states (₹20 lakh in some special category states).
• Services: the threshold is ₹20 lakh in most states (₹10 lakh in special category states).

These are general figures and there are exceptions, so confirm your state's current limit. A few situations require registration regardless of turnover, most importantly selling through e-commerce operators like Amazon or Flipkart, and selling across state lines. If your website takes orders from other states, that is a flag to check your obligation carefully.

Below the threshold, you can often operate without GST registration, which keeps your paperwork light. Many small local salons, tuition centres, and single-location shops fall here. Once you grow or start selling online across states, registration usually becomes mandatory.

The Composition Scheme, for smaller businesses

If your turnover is up to ₹1.5 crore, you may be eligible for the Composition Scheme, which lets you pay GST at a low flat rate on turnover with far less paperwork, in exchange for not claiming input tax credit and not collecting GST separately from customers. It suits small B2C businesses that mostly sell to end consumers. The trade-off is that you cannot show GST on your invoices, and you must write "composition taxable person" on them. Ask your CA whether it fits you, because for many small shops it dramatically reduces the compliance burden.

What your invoice must show

This is where your website and billing come together. A proper GST tax invoice generally needs to include:

1. Your business name, address, and GSTIN
2. A unique, sequential invoice number
3. The date of issue
4. The customer's name, and their GSTIN if they are GST-registered (B2B)
5. A description of the goods or services
6. The HSN or SAC code for what you sell
7. The taxable value
8. The GST rate and amount, split into CGST and SGST for sales within your state, or IGST for inter-state sales
9. The total

That looks like a lot, but a good invoice generator fills most of it in automatically once you set up your business details. You do not need accounting software to produce a compliant invoice, you need the right fields filled correctly and consistently.

Displaying your GSTIN on your website

If you are GST-registered, it is good practice, and in some cases required, to display your GSTIN clearly. Put it:

• In your website footer or on your contact page
• On every invoice you issue
• On your physical premises, where display of the GST registration certificate is a requirement

A visible GSTIN also builds trust. A customer comparing two unknown online shops will lean towards the one that looks like a registered, accountable business. It signals you are a real, compliant operation, which matters as much for conversions as it does for compliance. Every Neweb-built site has a footer where your GSTIN, registered address, and contact details sit consistently, which also helps your local SEO because Google rewards consistent business details.

Common GST rate slabs

Since the GST 2.0 reform took effect on 22 September 2025, GST has three main slabs plus a special rate, and which one applies depends on what you sell:

• 0 percent, on many essential and unbranded food items
• 5 percent, the merit rate for many daily-use goods and some services
• 18 percent, the standard rate and the most common slab for most services and many goods
• 40 percent, a special rate on luxury and so-called sin goods

The old 12 and 28 percent slabs were folded into these for most items. See our GST 2.0 guide for what changed.

Most service businesses, agencies, clinics' non-exempt services, and many products fall in the 18 percent band, but rates change and there are many specific classifications, so confirm the exact rate and HSN/SAC code for your particular goods or services. Charging the wrong rate creates problems at filing time.

Filing returns, briefly

Once registered, you file periodic GST returns, typically monthly or quarterly depending on your turnover and scheme. The common ones are GSTR-1 (your outward sales) and GSTR-3B (a summary return). Composition scheme businesses file less frequently. Missing deadlines attracts late fees and interest, so set calendar reminders or, better, hand the filing to a CA or a filing service. For most small businesses, the cost of a professional handling filings is far less than the cost of penalties and stress from doing it wrong.

A simple compliance routine

You do not need to become a tax expert. You need a routine:

1. Know your threshold and check whether you have crossed it as you grow.
2. Register when required, and decide with your CA whether the Composition Scheme fits.
3. Issue compliant invoices every time, using a tool that fills the required fields.
4. Display your GSTIN on your website footer, invoices, and premises.
5. File on time, ideally with professional help.

Get those five right and GST becomes a manageable monthly habit rather than a yearly panic.

Where your website fits in

Your website is where a lot of this becomes visible to customers: your GSTIN in the footer, your invoices, your prices shown inclusive or exclusive of GST clearly. Getting it consistent looks professional and keeps you out of trouble. If you want a site that has the right footer fields, a built-in invoice generator, and consistent business details across the web, that is part of what Neweb sets up from $9 a month billed yearly.

GST is rules-heavy but not mysterious. Learn the few basics that apply to your size and sector, lean on a CA for the rest, and keep your invoices and website tidy. That is genuinely most of the job.