🧾 Invoice Calculator

For each line item: Line Total = Qty × Rate × (1 - Discount%/100) Subtotal = Sum of all line totals Overall Discount = Subtotal × Overall Discount% Taxable Amount = Subtotal - Overall Discount + Shipping GST Amount = Taxable Amount × GST Rate / 100 CGST = GST Amount / 2 (intra-state) SGST = GST Amount / 2 (intra-state) IGST = GST Amount (inter-state) Invoice Total = Taxable Amount + GST Amount TDS Deduction = Invoice Total × TDS Rate / 100 (or on Taxable Amount for some sections) Amount Payable = Invoice Total - TDS Deduction

0%: Essential goods — fruits, vegetables, milk, books 5%: Basic necessities — packaged foods, transport 12%: Standard goods — computers, phones, textiles 18%: Most services — software, consulting, IT services 28%: Luxury goods — cars, tobacco, aerated drinks Most B2B services (consulting, software, freelance): 18% GST is the most common rate GST Registration threshold: Goods: annual turnover above ₹40 lakh Services: annual turnover above ₹20 lakh

Section 194C: Payments to contractors Individual: 1% | Company: 2% Threshold: Single payment above ₹30,000 OR cumulative above ₹1,00,000/year Section 194J: Professional/Technical services 5% for most professional services 10% for royalty/non-compete fees Threshold: ₹30,000 per financial year Section 194I: Rent 10% for plant/machinery (above ₹2.4L/year) 10% for land/building (above ₹2.4L/year) TDS deducted by client from payment; you claim credit in ITR via Form 26AS.