GST calculator India
Work out inclusive or exclusive GST with CGST/SGST or IGST split, then move the result into InvoiceWala for branded invoices, payment links and reminders.
Change any field to update the result instantly.
GST rate
Ready for invoice, quotation or estimate checks.
CGST
₹900.00
SGST
₹900.00
IGST
₹0.00
Grand total
₹11,800.00
Save this GST calculation into InvoiceWala to create a branded tax invoice, add payment links and track due reminders.
Use the tax split while creating GST-compliant invoices in InvoiceWala.
Estimate GST before sharing a proposal with your customer.
Validate vendor GST totals before bookkeeping or expense entry.
Guide
InvoiceWala's GST Calculator helps you quickly calculate GST on products, services, invoices, quotations and business bills. You can use it to find the GST amount, taxable value and final invoice total before sending a bill to your customer.
The calculator is useful for freelancers, consultants, agencies, contractors, local shops, GST-registered businesses and service providers who need simple tax calculations without opening a spreadsheet.
Formula
Use the exclusive formula when GST is added on top of the base amount. Use the inclusive formula when the final price already includes GST.
GST Amount = Base Amount x GST Rate / 100Final Amount = Base Amount + GST AmountBase Amount = Final Amount x 100 / (100 + GST Rate)GST Amount = Final Amount - Base AmountIf the base amount is Rs. 10,000 and GST is 18%, GST amount is Rs. 1,800 and the final invoice value is Rs. 11,800.
Examples
A freelance designer charges Rs. 25,000 for a branding project with 18% GST.
A marketing agency bills a client Rs. 60,000 per month plus 18% GST.
A shop sells products worth Rs. 8,500 inclusive of 12% GST.
Learn
GST stands for Goods and Services Tax. It is an indirect tax applied to the sale of goods and services in India. Businesses use GST invoices to show taxable value, GST amount and total amount charged to the customer.
GST exclusive means tax is added on top of the base price. GST inclusive means the final price already includes tax, so the taxable value must be worked backwards from the total.
Correct GST calculation helps you quote prices confidently, prepare accurate invoices, show tax breakup clearly and reduce manual billing mistakes.
Use cases
Calculate GST before sending design, development, writing, consulting or retainer invoices.
Check tax on monthly retainers, campaign work, project fees and quotation totals.
Calculate GST on labor, materials, site visits and milestone billing.
Separate taxable value and GST from product sales, service bills and customer invoices.
Related tools
Next steps
Create a GST-ready invoice after calculating tax.
Make a professional invoice and download a PDF.
Preview an invoice before signup.
Use a practical Indian invoice format.
Prepare a quote before billing.
Learn how to create a GST invoice step by step.
FAQs
A GST calculator is an online tool that calculates GST amount, taxable value and final price based on an amount and GST rate.
Enter the amount, choose the GST rate and select whether the amount is GST-inclusive or GST-exclusive. The calculator shows taxable value, GST and total.
GST-inclusive pricing means the final price already includes GST. The calculator separates the taxable value and GST amount from that total.
GST-exclusive pricing means GST is added on top of the base amount. For example, Rs. 10,000 plus 18% GST becomes Rs. 11,800.
Yes. You can use the GST amount while creating invoices, GST bills, quotations or PDF invoices.
Common GST rates include 0%, 3%, 5%, 12%, 18% and 28%. The correct rate depends on the product or service category.
Yes. InvoiceWala's GST calculator can show CGST and SGST split for intra-state supply or IGST for inter-state supply.
Yes. InvoiceWala's GST calculator is free to use online.
Freelancers, consultants, agencies, contractors, shops, manufacturers and GST-registered small businesses can use it for quick tax checks.
Yes. After calculating GST, you can use InvoiceWala's invoice generator or GST invoice maker to create a professional PDF invoice.
Related searches
These are common ways business owners search when they need to calculate tax before creating an invoice or quotation.