How do you calculate exclusive VAT/GST (adding tax to a net price)?

To add VAT/GST to a net amount, multiply the net price by the tax rate percentage (e.g., Net Amount x 0.15 for 15% VAT). Add the resulting tax amount to the net price to derive the total gross price.

How do you calculate inclusive VAT/GST (extracting tax from a gross price)?

To extract VAT/GST from a gross total price, use the formula: Tax Amount = Gross Amount - (Gross Amount / (1 + (Tax Rate / 100))). Subtracting the tax amount gives the original net price.

Is this VAT/GST Calculator free?

Yes, MicroToolStack's VAT/GST Calculator is 100% free with unlimited tax calculations and no account sign-up required.

Free Online VAT & GST Calculator | Inclusive & Exclusive Tax Tool

Q: Is my accounting or pricing data saved on your server?

No. All tax algorithms execute locally inside your web browser using JavaScript. No transaction figures, prices, or rates are logged or stored.

Select Tax Operation

Net Amount ($)

VAT / GST Rate (%)

Understanding Value Added Tax (VAT) and Goods & Services Tax (GST)

Value Added Tax (VAT) and Goods and Services Tax (GST) are consumption taxes levied on goods and services at each stage of the supply chain where value is added. Millions of businesses, accountants, and consumers manage daily sales invoicing involving both tax-exclusive (net) and tax-inclusive (gross) prices.

Our free Online VAT & GST Calculator automates consumption tax mathematics. Whether you are adding 20% UK VAT to a net invoice or extracting 15% GST from a retail receipt, this tool provides instant financial accuracy for business bookkeeping.

Mathematical Formulas for Exclusive and Inclusive Tax Calculations

Calculating consumption taxes depends on whether you are starting with a net or gross price structure:

1. Adding VAT/GST to a Net Price (Exclusive Tax)

When starting with a net price ($N$) and adding tax at rate ($R\%$):

$$\text{Tax Amount} = N \times \left(\frac{R}{100}\right)$$

$$\text{Gross Total} = N + \text{Tax Amount}$$

Example: A net item of $100 with 15% VAT yields $15 in tax, making the total gross price $115.

2. Extracting VAT/GST from a Gross Price (Inclusive Tax)

When starting with a total inclusive gross price ($G$) and finding the embedded tax component:

$$\text{Tax Amount} = G - \left(\frac{G}{1 + \frac{R}{100}}\right)$$

$$\text{Net Price} = G - \text{Tax Amount}$$

Example: A total gross receipt of $115 with 15% inclusive VAT extracts exactly $15 in tax, leaving a net price of $100.

Features of MicroToolStack's Sales Tax Calculator

Dual-Mode Switching: Seamlessly switch between adding tax to net amounts or extracting tax from gross figures.
Custom Tax Percentages: Supports standard regional rates (such as 20% UK VAT, 15% Bangladesh VAT, 10% Australia GST, or custom percentages).
100% Free & Unlimited: Perform unlimited business calculations with zero registration required.
Complete Browser Privacy: All calculations render locally inside your browser session using JavaScript. No private accounting numbers are saved.

Explore Related Calculators & Utilities

Discover our complementary everyday business financial tools:

Frequently Asked Questions (FAQs)

How do I remove VAT from a total price?

Divide the total gross price by 1 + (Tax Rate / 100) to find the original net price before tax.

What is the difference between VAT and GST?

Both VAT and GST are multi-stage consumption taxes. The primary difference lies in regional naming conventions and administrative frameworks across different countries.

Is my accounting or pricing data saved on your server?

No. All calculations run client-side inside your web browser using JavaScript. No transaction values are logged or stored.

Is this Tax Calculator free to use?

Yes, MicroToolStack's VAT & GST Calculator is completely free with no usage limits or sign-up required.