Introduction: Why GST Matters for Your Business
Whether you're running a small shop, an e-commerce business, or providing professional services, understanding GST (Goods and Services Tax) is no longer optional—it's essential. Implemented in July 2017, GST replaced multiple indirect taxes with a unified tax system. While it simplified taxation in many ways, compliance can still be overwhelming for small business owners.
This guide will help you understand GST basics, navigate compliance requirements, and discover legitimate ways to reduce your tax burden.
What is GST? Understanding the Basics
GST is an indirect tax levied on the supply of goods and services. It's a destination-based tax, meaning it's collected at the point of consumption, not manufacture.
Key Concept: Input Tax Credit (ITC)
This is the heart of GST. When you buy goods/services for your business, you pay GST (input tax). When you sell, you collect GST (output tax). You can offset the input tax against output tax:
Formula: GST Payable = Output GST - Input GST
Example:
- You purchase raw materials for ₹1,00,000 + ₹18,000 GST (18%)
- You sell finished products for ₹2,00,000 + ₹36,000 GST (18%)
- GST to pay to government = ₹36,000 - ₹18,000 = ₹18,000
- Without ITC, you would pay full ₹36,000!
Types of GST
1. CGST (Central GST)
Collected by Central Government on intra-state supplies (within same state)
2. SGST (State GST)
Collected by State Government on intra-state supplies
3. IGST (Integrated GST)
Collected by Central Government on inter-state supplies (across states)
4. UTGST (Union Territory GST)
For Union Territories (Chandigarh, Puducherry, etc.)
Practical Example:
- Within Maharashtra: You sell for ₹1000 + ₹180 GST (18%) = ₹90 CGST + ₹90 SGST
- Maharashtra to Gujarat: You sell for ₹1000 + ₹180 IGST (18%)
GST Registration: Who Needs It?
Mandatory GST Registration If:
- Turnover Threshold Exceeded
- Goods: Annual turnover > ₹40 lakh (₹20 lakh for special category states)
- Services: Annual turnover > ₹20 lakh (₹10 lakh for special category states)
- Inter-state Supply
- Even if turnover is ₹1, you need GST registration
- Selling on Amazon/Flipkart to other states = mandatory registration
- E-commerce Sellers
- Selling through e-commerce platforms like Amazon, Flipkart
- No turnover limit
- Specific Businesses
- Casual taxable persons
- Agents/distributors
- Input service distributors
- Persons liable to pay tax under reverse charge
- Non-resident taxable persons
Voluntary Registration
Even if not mandatory, you can register to:
- Claim input tax credit
- Look more professional/credible
- Deal with larger businesses (they prefer GST vendors)
- Expand to inter-state sales
GST Rate Slabs: What's Your Product/Service Taxed At?
0% GST (Nil Rated)
- Fresh vegetables, fruits, milk, curd, eggs
- Grains and cereals
- Educational and healthcare services
- Books, newspapers, handmade goods
5% GST
- Transport services (rail, air economy)
- Small restaurants (non-AC, no alcohol)
- Packed food items (sugar, tea, coffee, edible oil)
- Coal, medicines
12% GST
- Processed food (frozen, packaged)
- Computers, printers
- Business class air travel
- Work contracts
18% GST (Most Common)
- Most services (consulting, professional services, IT services)
- AC restaurants
- Capital goods, industrial machinery
- Soaps, toothpaste, hair oil
- Branded garments
28% GST (Highest)
- Luxury items (cars, motorcycles above 350cc)
- Tobacco, cigarettes
- Aerated drinks
- High-end electronics (dishwashers, etc.)
Pro Tip: Check your HSN (Harmonized System of Nomenclature) code to confirm exact GST rate for your product/service.
GST Returns: What, When, and How to File
For Regular Taxpayers (Normal Registration)
GSTR-1 (Monthly/Quarterly)
- What: Details of outward supplies (sales)
- When: 11th of next month (monthly) / 13th of month after quarter (quarterly)
- Who: All regular GST registered businesses
GSTR-3B (Monthly)
- What: Summary return with tax payment
- When: 20th of next month
- Who: All regular taxpayers
- Important: This is where you pay actual tax
For Composition Scheme Taxpayers
GSTR-4 (Quarterly)
- What: Quarterly return for composition dealers
- When: 18th of month after quarter end
CMP-08 (Quarterly)
- What: Statement of outward supplies + tax payment
- When: 18th of month after quarter end
Annual Returns
GSTR-9 (Annual)
- What: Annual return consolidating all monthly/quarterly returns
- When: 31st December of next financial year
- Who: All regular taxpayers with turnover > ₹2 crore
Composition Scheme: Simplified GST for Small Businesses
If your turnover is low, composition scheme offers much simpler compliance.
Eligibility:
- Turnover up to ₹1.5 crore (₹75 lakh for special category states)
- Only intra-state supplies (no inter-state sales)
- Not applicable for restaurants, ice cream parlors, and some services
Tax Rates Under Composition Scheme:
- Manufacturers: 1% of turnover
- Restaurants (no alcohol): 5% of turnover
- Traders & other businesses: 1% of turnover
- Service providers: 6% of turnover
Benefits:
- Much lower tax rate
- Simple quarterly returns (instead of monthly)
- Less compliance burden
- Lower CA/accounting costs
Limitations:
- Cannot claim input tax credit
- Cannot collect GST from customers (must show "composition taxable person" on invoice)
- Can't make inter-state supplies
- Limited business expansion scope
Should You Opt for Composition Scheme?
Yes, if:
- Low turnover (under ₹1 crore)
- Local business (no inter-state sales)
- Low input costs (little ITC to claim)
- Retail business (customers don't need GST invoices)
No, if:
- High input costs (you'll lose significant ITC)
- B2B business (customers need GST invoices with ITC)
- Want to expand to other states
Input Tax Credit (ITC): Maximizing Your Tax Savings
What Expenses Qualify for ITC?
Yes, You Can Claim ITC:
- Raw materials purchased
- Goods purchased for resale
- Packing materials
- Capital goods (machinery, computers, furniture)
- Input services (rent, professional fees, transportation)
- Office supplies
- Electricity, telephone, internet
No, ITC Not Available:
- Personal expenses
- Employee benefits (club memberships, health insurance)
- Food and beverages (except for employees at work premises)
- Vehicles (unless used for specific business purposes like goods transport)
- GST paid under composition scheme
- Goods/services used for exempt supplies
Conditions to Claim ITC:
- You must have a valid tax invoice
- Goods/services must have been received
- You must have filed GST return
- Supplier must have filed their return and paid tax
- Claim ITC within time limit (generally same financial year + Sept of next year)
Common GST Mistakes Small Businesses Make
1. Not Maintaining Proper Records
Solution: Use accounting software (Tally, Zoho Books, etc.) to track all transactions
2. Missing Filing Deadlines
Penalty: ₹50/day (₹25 CGST + ₹25 SGST) up to ₹5,000 max
Solution: Set calendar reminders, automate where possible
3. Not Claiming Eligible ITC
Impact: Paying 18-28% more than needed
Solution: Maintain all tax invoices, reconcile monthly
4. Wrong HSN/SAC Codes
Impact: Wrong tax rate application, notices from GST department
Solution: Verify codes on GST portal, consult CA if unsure
5. Not Reconciling GSTR-2A with Purchase Records
Impact: Claiming ITC for supplies where vendor hasn't paid tax = ITC reversal + penalty
Solution: Monthly reconciliation of GSTR-2A
6. Charging Wrong GST Rate
Impact: Under-charging = you pay from pocket; Over-charging = customer complaints + refunds
Solution: Confirm rate for each product/service
7. Mixing Personal and Business Expenses
Impact: Wrong ITC claims = penalties in GST audit
Solution: Separate business and personal accounts
GST Audit and Notices: What to Expect
Who Gets Audited?
- Random selection
- High turnover businesses
- Businesses with mismatches in returns
- Complaints or intelligence reports
Types of GST Audits:
- GST Audit (Section 65): For turnover > ₹5 crore, annual audit by CA required
- GST Department Audit (Section 66): Department can audit any taxpayer
- Special Audit (Section 66): For complex cases
Common Reasons for GST Notices:
- Mismatch between GSTR-1 and GSTR-3B
- ITC claimed but not reflected in supplier's return
- Late filing or non-filing of returns
- Sudden increase/decrease in turnover
- Wrong classification of goods/services
How to Respond to GST Notice:
- Don't panic—most notices are for clarification
- Read notice carefully, understand what's being asked
- Gather relevant documents and proof
- Respond within stipulated time (usually 15-30 days)
- Consult a CA/tax professional if needed
- Keep communication formal and documented
Digital Tools and Software for GST Compliance
Accounting Software with GST:
- Tally Prime: Most popular in India, comprehensive GST features
- Zoho Books: Cloud-based, good for small businesses
- QuickBooks: User-friendly, great for startups
- Busy: Budget-friendly, good for retailers
- ClearTax: Simplified GST filing and compliance
Benefits of Using Software:
- Automatic GST calculation
- Easy invoice generation with GST details
- Input tax credit tracking
- Return filing assistance
- Reconciliation tools
- Reduced errors
GST Compliance Checklist for Small Businesses
Monthly Tasks:
- ☐ Issue GST-compliant invoices for all sales
- ☐ Collect and organize purchase invoices
- ☐ Reconcile GSTR-2A with purchase register
- ☐ File GSTR-1 (by 11th of next month)
- ☐ File GSTR-3B and pay tax (by 20th of next month)
Quarterly Tasks (Composition Scheme):
- ☐ Calculate turnover for the quarter
- ☐ File CMP-08 and pay tax (by 18th of next month)
Annual Tasks:
- ☐ File GSTR-9 (by 31st December)
- ☐ Get GST audit done if turnover > ₹5 crore
- ☐ Review and renew GST registration if needed
- ☐ Plan tax-saving strategies for next year
Penalties for Non-Compliance
- Late filing: ₹50/day (max ₹5,000)
- Non-filing: 10% of tax due or ₹10,000 (whichever higher)
- Tax evasion: 100% of tax amount + possible prosecution
- Wrong ITC claim: 100% of credit wrongly availed + interest
- Not issuing invoice: ₹25,000 or amount of tax evaded (whichever higher)
Conclusion: Making GST Work for Your Business
GST compliance doesn't have to be overwhelming. With the right understanding, proper documentation, and timely filing, you can ensure smooth operations while maximizing tax benefits through input tax credit.
Key Takeaways:
- Understand your GST obligations based on turnover and business type
- Consider composition scheme if eligible—it's simpler and cheaper
- Claim all eligible input tax credit to minimize tax outflow
- Maintain meticulous records and use accounting software
- Never miss filing deadlines—penalties add up quickly
- Respond promptly to any GST notices
- Review and optimize GST strategy annually
Running a business is challenging enough—don't let GST compliance add to your stress. Need help with GST registration, filing, or optimization? Contact Inbest's tax consultants who specialize in helping small businesses navigate GST with ease and confidence.

