VAT (Value Added Tax) and GST (Goods and Services Tax) are consumption taxes applied in many countries, and calculating the tax-inclusive or tax-exclusive price correctly is essential for both businesses and consumers. This VAT/GST calculator lets you add tax to a net price to find the gross total, or work backwards from a gross price to find the original net amount and the tax portion. It supports custom tax rates, so you can use it for UK VAT (20%), EU VAT rates, Australian/New Zealand GST (15% and 10%), or any other percentage. Business owners can use it for invoicing and pricing, while consumers can quickly verify receipts or compare prices across regions with different tax rates.