GST Calculator Online & Multi-Slab Tax Schedule Generator
Compute Goods & Services Tax for all standard slabs (0%, 3%, 5%, 12%, 18%, 28%) with automatic CGST, SGST, and IGST breakdowns. Generate a boardroom-ready A4 Tax Computation Schedule ready for GSTR-3B filing.
tune 1. Calculation Mode & Supply Type
inventory_2 2. Line Items & Taxable Values
1. Itemized Tax Computation & Multi-Slab Breakup
| Item Description | HSN/SAC | Rate | Taxable Base (₹) | CGST (₹) | SGST (₹) | Gross Total (₹) |
|---|---|---|---|---|---|---|
| Grand Totals: | ₹0.00 | ₹0.00 | ₹0.00 | ₹0.00 | ||
2. Slab-Wise Tax Liability Reconciliation
| Rate Slab | Taxable Value (₹) | Central Tax (CGST) | State Tax (SGST) | Integrated Tax (IGST) | Total Tax Liability (₹) |
|---|
GST Calculation Formulas, Slabs & Compliance Guide (FY 2026-27)
add_circle GST Exclusive Formula (Adding GST)
When the quoted amount is base/net price excluding taxes:
Gross Total = Base Price + GST Amount
remove_circle GST Inclusive Formula (Extracting GST)
When the quoted price is MRP or gross billing amount already containing GST:
GST Amount = Gross Total – Base Price
Understanding the 4-Tier GST Rate Structure in India
The Goods and Services Tax Council of India establishes tax rates categorized under Chapter heads and HSN (Harmonized System of Nomenclature) / SAC (Services Accounting Code):
- 0% (Nil Rated / Exempt): Essential unbranded foodstuffs (grains, milk, fresh vegetables), books, municipal services, healthcare, and educational services.
- 3%: Gold, silver, platinum jewellery, and precious stones.
- 5%: Mass consumption items, edible oils, packaged tea, coffee, medicines, coal, and economy flight tickets.
- 12%: Processed foods, business computers, select apparel above ₹1000, umbrella, and diagnostic kits.
- 18% (Standard Rate): Information technology and SaaS software services, telecom, financial services, restaurants, industrial capital goods, and electronics.
- 28% (Luxury & Sin Goods): Automobiles, motor vehicles, aerated sodas, tobacco products, pan masala, and cement (often attracting additional Compensation Cess).
Intra-State vs. Inter-State GST Mechanics
| Type of Supply | Condition | Applicable Tax Components | Revenue Distribution |
|---|---|---|---|
| Intra-State Supply | Supplier location & Place of Supply are in the SAME State / UT | CGST (50%) + SGST (50%) | Central Government & Respective State Government share equally |
| Inter-State Supply | Supplier location & Place of Supply are in DIFFERENT States or Exports | IGST (100%) | Collected by Centre and apportioned to destination consumption State |
Frequently Asked Questions (FAQs)
What is the difference between GST inclusive and exclusive prices?
An exclusive price represents the vendor’s net earnings before tax. The buyer pays net price + calculated tax. An inclusive price (such as consumer retail MRP) is the total final cost, from which the internal tax component is backed out using the reciprocal percentage formula.
How do I report these figures into GSTR-3B?
Use the generated Table 3.1 Mapping Summary directly in your monthly or quarterly GSTR-3B return. Outward taxable supplies go into Row 3.1(a) with the respective splits for IGST, CGST, and SGST.
Can I claim Input Tax Credit (ITC) on all GST paid?
ITC can be claimed on goods and services used exclusively in the course or furtherance of business, subject to valid tax invoice possession, GSTR-2B reflection, and not being blocked under Section 17(5) of the CGST Act (e.g. personal motor vehicles, club memberships).