Is Ozydo really free?

Yes. Ozydo's free plan lets you create 5 invoices and 3 estimates every month at zero cost, forever. No credit card is required. The Pro plan (₹199/month) removes the monthly limits and adds unlimited invoices, premium PDF templates, GSTR-1 export, and priority support.

How do I create a GST invoice for free in India?

Sign up free at ozydo.com, add your GSTIN in settings, create a new invoice, add your client and line items, choose the GST rate (5%, 12%, 18%, or 28%), and tap Send. The PDF invoice is generated instantly with CGST/SGST or IGST calculated automatically. Share via WhatsApp or email.

What is the mandatory format for a GST invoice in India?

A valid GST tax invoice must include: supplier name, address, and GSTIN; unique sequential invoice number; invoice date; recipient name, address, and GSTIN (for B2B); HSN/SAC code; description of goods or services; taxable value; GST rate; CGST and SGST or IGST amounts separately; place of supply; and total value in words and figures.

Can I send a GST invoice on WhatsApp?

Yes. Ozydo generates a professional GST invoice PDF and lets you share it directly on WhatsApp with one tap — without downloading and re-uploading the file. This is the fastest way to send invoices to clients in India.

What is the difference between CGST, SGST, and IGST?

CGST (Central GST) and SGST (State GST) apply to intra-state sales — within the same state. They are each half of the total GST rate (e.g., 18% GST = 9% CGST + 9% SGST). IGST (Integrated GST) applies to inter-state sales — between two different states — and equals the full rate.

Do freelancers need to charge GST on invoices?

Only if your annual service income exceeds ₹20 lakh (₹10 lakh in some North-East states). Below this threshold, you do not need to register for GST and can invoice without charging GST. Above the threshold, GST registration is mandatory and you must charge 18% GST on most services.

What is the best free invoice app for small businesses in India?

Ozydo is designed specifically for Indian small businesses — it creates GST-compliant invoices in 30 seconds, shares them via WhatsApp, adds a UPI QR code for instant payment, and supports Hindi language. The free plan includes 5 invoices/month with no credit card required.

How do I collect payment via UPI on an invoice?

Add your UPI ID (e.g., yourname@okaxis) in your Ozydo business settings. Every invoice you create will automatically include a UPI QR code and direct payment links for GPay, PhonePe, and Paytm. Clients scan the QR or tap the link to pay instantly.

How do I calculate GST in India?

To calculate GST: multiply the base amount by the GST rate percentage. For 18% GST on ₹10,000: GST = ₹1,800 (₹900 CGST + ₹900 SGST for intra-state, or ₹1,800 IGST for inter-state). Use this free calculator to get the exact breakdown instantly.

What is the difference between CGST, SGST and IGST?

CGST and SGST apply to intra-state sales (within the same state) — each is half the GST rate. IGST applies to inter-state sales (between two different states) and equals the full GST rate. Example: 18% GST within Maharashtra = 9% CGST + 9% SGST. 18% GST from Maharashtra to Delhi = 18% IGST.

What are the GST slabs in India 2026?

India has 5 GST slabs: 0% (essential goods — raw food, books), 5% (basic goods — milk products, medicines), 12% (processed food, business class travel), 18% (most services, electronics, restaurants), and 28% (luxury goods — cars, tobacco, appliances).

How to calculate GST inclusive price?

To find the base price from a GST-inclusive price: Base = Inclusive Price ÷ (1 + GST rate). Example: ₹11,800 inclusive of 18% GST → Base = ₹11,800 ÷ 1.18 = ₹10,000. GST amount = ₹1,800. Use the 'GST Inclusive' toggle in this calculator for instant results.

Free GST Calculator India 2026 — Calculate CGST, SGST & IGST Instantly

How to Use This GST Calculator

Enter the amount

Type the transaction amount in rupees. Choose whether GST should be added on top (exclusive) or is already included in the price (inclusive).

Select GST rate

Pick the applicable slab — 0%, 5%, 12%, 18%, or 28% — based on the goods or services. Most services in India are 18%.

Choose supply type

Intra-state (same state) shows CGST + SGST. Inter-state (different states) shows IGST at the full rate.

Get the breakdown

Instantly see base amount, CGST, SGST or IGST, total GST amount, and total payable. Copy the breakdown to clipboard.

GST Formula — How Is GST Calculated in India?

GST Exclusive (Add GST to price)

Total = Amount × (1 + GST Rate / 100)

₹10,000 + 18% GST = ₹11,800

CGST = ₹900 | SGST = ₹900

GST Inclusive (Extract GST from total)

Base = Total / (1 + GST Rate / 100)

₹11,800 total at 18% GST

Base = ₹10,000 | Tax = ₹1,800

Common GST Calculations

Base Amount	GST Rate	GST Amount	CGST	SGST	Total
₹1,000.00	5%	₹50.00	₹25.00	₹25.00	₹1,050.00
₹1,000.00	12%	₹120.00	₹60.00	₹60.00	₹1,120.00
₹1,000.00	18%	₹180.00	₹90.00	₹90.00	₹1,180.00
₹1,000.00	28%	₹280.00	₹140.00	₹140.00	₹1,280.00
₹5,000.00	18%	₹900.00	₹450.00	₹450.00	₹5,900.00
₹10,000.00	18%	₹1,800.00	₹900.00	₹900.00	₹11,800.00
₹25,000.00	18%	₹4,500.00	₹2,250.00	₹2,250.00	₹29,500.00
₹50,000.00	18%	₹9,000.00	₹4,500.00	₹4,500.00	₹59,000.00

Skip the calculator — let Ozydo do it automatically

Every Ozydo invoice calculates CGST, SGST, and IGST per line item automatically. No maths, no errors. Free for Indian small businesses.

Create Free GST Invoice →