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Withholding Tax and VAT Calculator
Examples of withholding tax rates
Rate 5%
- 
Rental Income 
- 
Prize Winnings 
- 
Performance Fees 
Rate 3%
- 
Service fee 
- 
Professional fee 
- 
Copyright fee 
Rate 2%
- 
Advertising Expense 
Rate 1%
- 
Shipping Cost 
- 
Service fee withheld through the "e-Withholding Tax" 
Value Added Tax (VAT) is an indirect tax that consumers pay when purchasing goods or services. Businesses are responsible for accurately calculating and collecting this tax. VAT is a 7% tax calculated on the value of goods or services at each stage of production until they reach the consumer. VAT-registered businesses are obligated to charge tax on their sales, pay the difference between their output tax (tax on sales) and input tax (tax on purchases), and file a tax return every month.
How to calculate VAT

✅ If you know the price before VAT
Formula:
Price Including VAT = Product Price × 1.07
Example:
Product price: 1,000 Baht VAT = 1,000 × 7% = 70 Baht
Price Including VAT = 1,070 Baht
✅ If you know the price including VAT
Formula:
Value Added Tax (VAT) = (Price Including VAT × 7) ÷ 107
Example:
Product price including VAT: 2,140 Baht
VAT = (2,140 × 7) ÷ 107 = 140 Baht
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