1. Online GST Calculator India (Add & Remove GST)
CalcVahi delivers real-time GST calculations across all statutory tax slabs: 0%, 0.25%, 3%, 5%, 12%, 18%, and 28%, along with custom tax percentage inputs. Seamlessly switch between Add GST (tax exclusive to total) and Remove GST / Reverse GST (extracting base cost from MRP).
Standard Calculation Formulas:
- GST Exclusive:
GST Amount = (Base Amount × GST Rate) / 100|Total = Base Amount + GST Amount - GST Inclusive:
Base Amount = (Total Amount × 100) / (100 + GST Rate)|GST Amount = Total Amount - Base Amount - Intra-State: CGST = Total GST ÷ 2, SGST = Total GST ÷ 2
- Inter-State: IGST = Total GST Amount (100%)
2. Free GST Tax Invoice Generator
Create Rule 46 compliant GST tax invoices with business details, customer GSTIN, sequential invoice numbers, HSN/SAC codes, multi-slab line items, bank payment details, and digital signatures. Export high-resolution printable PDF invoices or share directly with clients on WhatsApp.
3. Free Proforma Invoice Generator
Issue professional proforma invoices for advance milestone payments, export import customs documentation, and preliminary client commitments before final delivery.
4. Business Quotation & Estimate Generator
Generate formal price quotes and project estimates. Specify quote validity dates, deliverable scopes, itemized labor and materials, and convert confirmed bids into tax invoices with ease.