Sales Tax Calculator
Tax amount and total price
How Sales Tax Works
Sales tax is a consumption tax charged on goods and services at the point of sale. In the US, sales tax rates vary by state, county, and city, ranging from 0% to over 10%. Some states like Oregon, Montana, and New Hampshire have no sales tax. This calculator multiplies the pre-tax price by the tax rate to determine the tax amount, then adds it to get the total.
Sales Tax by State
State sales tax rates range from 0% to 7.25% (California). Combined with local taxes, total rates can exceed 10% in some areas. Five states have no state sales tax: Alaska, Delaware, Montana, New Hampshire, and Oregon. However, some localities in Alaska do charge local sales tax.
Sales Tax Calculator: practical guide
The Sales Tax Calculator is built for people who want a fast answer without losing context. It keeps the calculation simple, shows the result clearly, and helps you understand what the number means before you use it in a real decision.
This calculator is designed to make a specific everyday calculation faster and clearer. It gives a structured result so you can compare options, check assumptions, or plan the next step with less manual work.
What is the best way to use the Sales Tax Calculator?
Enter the values carefully, review the units, and use the result as a reliable reference point. The Sales Tax Calculator is most useful when you compare scenarios or repeat the calculation with consistent inputs.
Is the Sales Tax Calculator accurate?
The calculator follows standard calculation logic, but accuracy depends on the values you enter and the assumptions behind the formula. For important finance decisions, use it as guidance and verify the result with a trusted source.
How to calculate GST on any price
GST (Goods and Services Tax) is a consumption tax applied to the sale of goods and services. There are two calculation directions most commonly needed:
Adding GST (exclusive price → inclusive price):
Formula: GST Amount = Base Price × (GST Rate ÷ 100)
Final Price = Base Price + GST Amount = Base Price × (1 + GST Rate ÷ 100)
Example: Base price $10,000, GST 18%: GST = $1,800. Final price = $11,800
Removing GST (inclusive price → base price):
Formula: Base Price = GST-Inclusive Price ÷ (1 + GST Rate ÷ 100)
GST Amount = Inclusive Price – Base Price
Example: Price paid $11,800 including 18% GST: Base = $11,800 ÷ 1.18 = $10,000. GST = $1,800.
Common mistake: Do NOT calculate 18% of $11,800 = $2,124. This overstates the GST because you would be taxing an already-taxed amount.
GST slabs (2026)
- 0% GST: Essential food items (fresh vegetables, milk, eggs, rice, wheat), health and education services, fresh meat and fish
- 5% GST: Packaged food, economy class air travel, transport services, small restaurants, medicines (most)
- 12% GST: Processed foods, business class air travel, construction services (residential), some agri-machinery
- 18% GST: Most services (restaurants above $7,500 bill, telecom, IT services, banking, insurance), electronics, appliances, most manufactured goods
- 28% GST: Luxury goods (premium cars, tobacco, aerated drinks, high-end cosmetics, casinos)
central tax vs state tax vs interstate tax
- Intra-state transactions (within same state): GST splits into central tax (Central) + state tax (State), each at half the total rate. For 18% GST: 9% central tax + 9% state tax
- Inter-state transactions (across states): Full GST charged as interstate tax (Integrated). For 18% GST: 18% interstate tax
GST input tax credit (ITC)
Businesses registered under GST can claim a credit for the GST they paid on inputs (purchases, services, raw materials) against the GST they collect from customers. This prevents the cascading effect of tax on tax. A manufacturer who pays 18% GST on raw materials and charges 18% GST on finished goods only remits the difference to the government.
GST calculation examples by category
- Restaurant bill $2,000 (AC restaurant): GST 5% = $100. Total = $2,100
- Smartphone $25,000: GST 18% = $4,500. Pre-GST price = $21,186. Consumer pays $25,000 total
- New car $800,000: GST 28% (plus cess) = approximately $224,000+. GST is a major component of vehicle pricing
- Software subscription $12,000/year: GST 18% = $2,160. Pre-GST = $10,169
Frequently asked questions about GST
Who pays GST — the buyer or the seller? The end consumer bears the final cost of GST. Businesses collect GST from customers, claim ITC on their inputs, and remit the net GST to the government. The tax incidence ultimately falls on the final consumer.
Is GST the same as VAT? GST replaced VAT in July 2017. GST is a unified national tax that subsumed multiple state and central taxes including VAT, service tax, central excise duty, and others.
What is the GST threshold for registration? Businesses with annual turnover above $4,000,000 ($2,000,000 for service providers; $1,000,000 for special category states) must register for GST.
How do I verify the correct GST rate for my product? Use the official tax authority rate schedule or check the GST Portal at your country's tax portal. The Harmonized System of Nomenclature (HSN) code for your product determines the applicable rate.