Add or remove sales tax from any price — across US states, Indian GST, and global VAT — in one click.
Use this free sales tax calculator to figure out the final price including tax, work backwards from a tax-inclusive total, or compare rates across jurisdictions.
Direct answers to the most common questions, in plain language. Skim if you're in a hurry; dig deeper below.
Multiply the price by the tax rate, expressed as a decimal.
For a $100 purchase at 8% sales tax, the math is $100 × 0.08 = $8 tax, for a final price of $108. The calculator handles this for any rate, in any currency, including when the tax is already included.
Divide the total by 1 plus the tax rate.
If a tax-inclusive total is $108 and the tax rate is 8%, the pre-tax price is $108 ÷ 1.08 = $100. The tax amount is the difference: $8. Useful for expense reports and reverse-engineering quoted prices.
Combined state + local rates range from 0% to over 10%.
Oregon, Montana, New Hampshire, Delaware, and Alaska have no state sales tax. California has the highest state rate at 7.25%. Once you add city and county taxes, combined rates in places like Chicago and parts of Louisiana can exceed 11%.
Similar idea, different mechanism.
US sales tax is charged once, at the point of sale, only to the final consumer. India's GST and most countries' VAT are charged at every stage of production, with businesses claiming input credits along the way. The end consumer ultimately pays a similar amount, but the collection mechanics are different.
The mechanics in short answers — no jargon, no upsell.
A $100 item at 8% tax becomes $108. The math is simple — what's tricky is figuring out which rate applies, because US sales tax depends on state, county, and sometimes city.
If you have a tax-inclusive total and need to find the original price, divide by 1 plus the rate. $118 ÷ 1.18 = $100 pre-tax in an 18% GST scenario. The calculator does this in reverse mode.
In the US, state + county + city + special district taxes all combine into the displayed rate. In India, GST has separate CGST and SGST components that sum to the slab rate. The calculator surfaces the combined rate so you don't have to sum components manually.
Groceries, prescription drugs, and clothing are often exempt or taxed at lower rates in many US states. India's GST has multiple slabs (0%, 5%, 12%, 18%, 28%) depending on the item category. The calculator lets you pick the right one.
Designed so anyone can model their situation in under a minute, with or without a finance background.
The sticker price isn't the price you pay. The calculator shows the final number before you reach the register.
When a vendor quotes "$118 all in," the calculator tells you the pre-tax price was $100 and the tax was $18.
Useful for cross-border purchases, online shopping, or just understanding how sales tax costs vary across US states.
Most expense systems require the pre-tax amount and the tax separately. The calculator splits a total cleanly into both.
If you're a small business setting list prices, you need to think about how tax displays. The calculator shows what the customer ultimately pays.
Combined state + local rates can be 3 percentage points higher than the state rate alone. The calculator surfaces the true combined number.
Everything you might ask before, during, or after using this tool.
Five: Oregon, Montana, New Hampshire, Delaware, and Alaska. Alaska is a special case — there's no state-level sales tax, but many cities and boroughs levy their own local sales taxes, so the effective rate isn't always zero. The other four are genuinely tax-free at the state level.
State rate + county rate + city rate + any special district rate. A purchase in Chicago, for example, faces Illinois state tax (6.25%), Cook County tax (1.75%), Chicago city tax (1.25%), and a Regional Transportation Authority tax (1%) — for a combined 10.25%. The calculator handles the summation automatically.
There are five primary slabs: 0% (essentials like fresh produce, milk), 5% (basic items like sugar, packaged food), 12% (processed food, computers), 18% (most services, electronics, restaurants), and 28% (luxury goods, automobiles, tobacco). The slab depends on the item category and is set centrally by the GST Council.
Mechanically very similar — both are multi-stage taxes collected at each link in the supply chain, with input credits flowing through. India calls its system GST; most of Europe, the UK, and many other countries call it VAT. The economic effect on the end consumer is essentially the same.
In the US, since the 2018 Wayfair Supreme Court ruling, online retailers generally charge sales tax based on the buyer's shipping address, even if the seller has no physical presence in that state. In India, GST applies to e-commerce purchases the same way it applies to in-store purchases. Cross-border online purchases may also attract customs duties.
In the US, depends on the state. Most states historically taxed only tangible goods, but many now tax some services (digital services, streaming, software-as-a-service). In India, services are uniformly subject to GST, almost always at the 18% slab. The calculator's "custom rate" option handles edge cases.
Yes. Most states exempt unprepared groceries and prescription medicines. Many exempt clothing (Pennsylvania, New Jersey, Massachusetts) or tax it at a lower rate. Some states have annual tax-free weekends for back-to-school shopping. The calculator's results assume the standard combined rate for the location — you'll need to override for exempt categories.
For most taxpayers, no. The standard deduction is now high enough that most people don't itemize. If you do itemize, you can deduct either state income tax or state sales tax (not both), capped at $10,000 total for SALT. This is a niche benefit that mostly affects high-income filers in low-income-tax states.
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The US has no federal sales tax. Each state sets its own rate, and then counties, cities, and special districts can layer their own taxes on top. The result is over 11,000 distinct sales tax jurisdictions in the country.
This is why the same purchase in two cities just miles apart can have different total taxes. Chicago shoppers pay 10.25% combined. Drive 30 miles to Indiana and the rate drops to 7%. This is also why online sellers have such a hard time with sales tax — they have to track thousands of rate combinations.
Five states have no state-level sales tax at all: Oregon, Montana, New Hampshire, Delaware, and Alaska. (Alaska is a partial exception — many of its cities levy local sales taxes.) These are the states people frequently drive to specifically for large purchases.
Most of the world uses some form of value-added tax (VAT) or goods and services tax (GST), which work very differently from the US sales tax model.
A VAT or GST is collected at every stage of production. A manufacturer pays it on raw materials and claims it back as input credit. The wholesaler pays it on goods and claims it back. The retailer pays it and claims it back. Only the final consumer actually bears the tax — but it's collected and audited at every step.
US sales tax, in contrast, is collected once, at the final retail sale. Businesses use resale certificates to buy goods tax-free, and the tax is only applied when the item reaches the end consumer.
The economic result is similar for the end consumer, but the audit and collection apparatus is very different. VAT systems are generally considered harder to evade because every stage creates a paper trail.
Almost every sales tax system has exemptions for essential goods, but where the line is drawn varies enormously.
In the US, most states exempt unprepared groceries — but Alabama, Mississippi, and a handful of others tax them at the full rate. Prescription drugs are universally exempt. Clothing is exempt in some states (Pennsylvania, New Jersey, Massachusetts, Vermont) and taxed in others.
India's GST handles exemptions through slabs rather than blanket exclusions. Fresh produce, milk, and unbranded essentials sit at 0%. Most consumer goods sit at 5%, 12%, or 18%. Luxury items and "sin goods" — cigarettes, soft drinks, premium automobiles — sit at 28% plus cess.
The takeaway: don't assume an item is taxed at the headline rate. Check the actual category, especially for groceries, clothing, and medical items.
If you sell goods or taxable services, you almost certainly need to collect and remit sales tax. The mechanics get complicated quickly.
In the US, the nexus rules determine where you owe tax. Physical presence creates nexus automatically. Since 2018, economic nexus rules also apply — if you do more than a threshold of sales in a state (typically $100,000 or 200 transactions), you owe tax there even without physical presence. This means an online seller may owe sales tax in dozens of states.
In India, GST registration is mandatory for businesses with turnover above ₹40 lakh (₹20 lakh for services). Registered businesses charge GST on sales, claim input credit on purchases, and file monthly returns.
If you're starting out, the right move is usually to register early, charge tax correctly from day one, and use software (Avalara, TaxJar, Cleartax) to automate filings. The penalties for getting this wrong are steep and accrue silently.
Two short notes worth reading before you trust any number on this page.
Your loan amount, rate, and prepayment inputs never leave your device. No accounts, no cookies on your numbers, no analytics on the values you type. Disconnect from the internet and it still works.
We are not a bank, NBFC, advisor, broker, or distributor of any financial product. The numbers shown here are estimates for educational purposes only, based on the inputs you provide.
Results are not financial, legal, or tax advice. Please consult a qualified professional before any decision about your loan, investments, or personal finances. Actual loan terms and charges depend on your bank and individual circumstances.
