Smart Utility Hub
Tax Computation Tool

GST & Sales Tax Calculator

Easily compute Goods and Services Tax (GST) or VAT for both Inclusive and Exclusive rates.

Currency:
$
18%
Total Gross Amount
$5,900
Total$5,900
Net Price: 85%
Tax: 15%
Pre-Tax Net Price:$5,000
Calculated GST (18%):+$900
Gross (Final) Price:$5,900

Tax Clarification Notice: Smart Utility Hub is a free mathematical calculation utility, not a chartered accountant, licensed tax consultant, or government revenue authority. Statutory tax classifications, exemptions, reverse charge applicability, and local tax splits (e.g., CGST/SGST vs IGST) vary by jurisdiction and goods classification.

Understanding Goods and Services Tax (GST) Calculations

Goods and Services Tax (GST)—also recognized as Value Added Tax (VAT) in numerous economies—is a comprehensive, multi-stage consumption tax levied on the sale of goods and services. Depending on whether you are issuing a commercial B2B invoice or purchasing retail merchandise, tax is computed either on an exclusive or inclusive basis.

1. GST Exclusive (Tax Added)

Applied when pricing is quoted net of tax and GST is added on top.

GST = (Net Amount × Rate) / 100
Gross = Net Amount + GST

2. GST Inclusive (Tax Extracted)

Applied when retail pricing already includes tax and you need the pre-tax base.

Net = Gross / (1 + Rate / 100)
GST = Gross - Net

Worked Examples: Exclusive vs. Inclusive Tax

Example A (Exclusive): A freelancer bills $1,000 for web consulting at an 18% GST rate. Tax is added on top: $1,000 × 18% = $180 GST. The client is invoiced for a gross total of $1,180.

Example B (Inclusive): A consumer buys an electronic gadget at a store for $1,180 with 18% GST included in the sticker price. The store's pre-tax revenue is: $1,180 / 1.18 = $1,000 net, with $180 remitted to the government in sales tax.

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Frequently Asked Questions About GST

GST Exclusive means tax has not yet been added to the base price, so the calculated tax amount is added on top to produce the final gross price. GST Inclusive means the listed amount already contains the tax, and our calculator extracts the original pre-tax net amount and the embedded GST.