Sales Tax Percentage Calculator

Our address database is available for retailers/vendors who may want to incorporate this information into their own systems. Just enter the five-digit zip code of the location in which the transaction takes place, and we will instantly calculate sales tax due to California, local counties, cities, and special taxation districts. Convert the percentage to a decimal -- so 7% becomes 0. Validated addresses ensure accuracy in rates and delivery. and Canadian tax jurisdictions with the tax rate calculator. Tax Rates: Sales and Use Tax Rates of SC Municipalities (ST-427) Sales and Use Tax Rates of SC Municipalities (By Zip Code) (ST-439) State Map of. Complete your listing and select Preview listing or Save and continue later. Each rate contains a category of goods and services. The following calculator can be used to calculate sales tax in the State of Arizona. Use this calculator when shopping or purchasing at retail stores, restaurants or online. 25 percent state sales and use tax on all retail sales, leases and rentals of most goods, as well as taxable services. The sales tax is Tennessee’s principal source of state tax revenue accounting for approximately 60% of all tax collections. Tax rate change notices. The one stop shop for the citizens of Davidson County Tennessee to renew their driver's license, get a business license, get a marriage license, and much more. The undersigned certify that, as of June 22, 2019, the internet website of the Franchise Tax Board is designed, developed and maintained to be in compliance with California Government Code Sections 7405 and 11135, and the Web Content Accessibility Guidelines 2. The percent off calculation formula is as follows Sale price = Original price. Get Java Code To Calculate Sales Tax, java coding for sales tax calculator, calculate sales tax percentage using Java program, calculate sales tax & printout of the receipt details for the purchased items. Streamlined Sales Tax The Finder > Streamlined Sales Tax > Lookup By Address ESSPRODWEB03. 3125 percent), a policy designed to help local retailers compete with neighboring Delaware, which forgoes a sales tax. Sales and Use Tax: Businesses in Maryland are required to collect Maryland's 6 percent sales and use tax and or 9 percent alcoholic beverage taxes from you whenever you make a taxable purchase. To calculate your North Carolina tax liability, multiply your North Carolina taxable income by 5. 00*6/100 or $0. The Percent Off Calculator is used to calculate the sale price of a discounted item after the percent off discount is applied. EY's Guide to Preparing 2018 Personal Tax Returns. (4) Food sales subject to local taxes. It's not hard to do. Tax is collected by the seller at the time of sale. Get precise United States sales tax calculator. The sales tax due amount is 7 percent of total taxable sales. The SalesTaxHandbook Sales Tax Calculator is a free tool that will let you look up sales tax rates, and calculate the sales tax owed on a taxable purchase, for anywhere in the United States. This calculator helps you estimate your average tax rate, your tax bracket, and your marginal tax rate for the current tax year. For example, you want to find the sales tax rate for Scottsdale, Arizona. Simply enter your state's sales and use tax rate in the form below, and click on the "Click Here to Generate Sales Tax Chart" button. The City Sales Tax rate is 4. > NOTE: If you're a dealership, it's a different story. calculate the percent of a number. Tax rate change notices. ZIP Codes, one record for each including the ZIP code, state abbreviation, county name, city name, and the general sales and use tax rates for the state, county, and city levels. The VAT is a sales tax that applies to the purchase of most goods and services, and must be collected and submitted by the merchant to the Germany governmental revenue department. Estimate your monthly payments with Cars. Learn How Tax Reform May Affect You, With Our Free Tax Calculator. This Applet will calculate all three types of Canadian sales tax, GST (G oods and S ervices T ax), HST (H armonised S ales T ax) and PST (P rovincial S ales T ax). October 2019 Rate Chart (18. Happens every day. Sales Tax Calculator Partner with ConvertIt. The Sales Tax Gain Rate. The rate you charge your. Additions to Tax and Interest Calculator; Income Tax Calculator; Sales/Use Tax Bond Calculator; Withholding Calculator. How much is tax and the final retail price including tax? Firstly, if the tax is expressed in percent, divide the tax rate by 100. Internet: Used to retrieve tax rate data. Add or subtract a percentage. Take the guesswork out of percent calculations. This sales tax calculator can be used as GST calculator, PST or HST calculator depending on selected province or territory. Without an employer withholding Social Security and Medicare taxes from your paycheck, you need to calculate and pay those taxes yourself. Determine the final price of a purchase including the sales tax. tax is in addition to the sales taxes already levied pursuant to La. About us Terms. You (obviously) may change the default values if you desire. An additional sales tax rate of 0. Sales Tax Example The sales tax you pay is based on auto tax regulations in your municipality and is not typically influenced by whether the car is new or used. That entry would be. To look up a rate for a specific address, or in a specific city or county in Virginia, use our sales tax rate lookup. Tax Rate Reports. The combined tax rate is the total sales tax of the jurisdiction for the address you submitted. It's not hard to do. com's car loan calculator and see how factors like loan term, down payment and interest rate affect payments. Hougardy said tax value is a piece of the puzzle in figuring out what everyone’s going to pay in taxes, but it’s more of a tool to determine levy rates within the county. In cases where items are sold at retail more than once, such as used cars, the sales tax can be charged on the same item indefinitely. Learn how to find out the local tax percentage and how to calculate its effect on your bill. How to calculate American State Sales Tax. The Income Tax Department NEVER asks for your PIN numbers, passwords or similar access information for credit cards, banks or other financial accounts through e-mail. This sales tax calculator can be used as GST calculator, PST or HST calculator depending on selected province or territory. West Virginia tax rate on food scheduled to decrease to 1% on July 1, 2012. Validated addresses ensure accuracy in rates and delivery. Short term gains on stock investments are taxed at your regular tax rate; long term gains are taxed at 15% for most tax brackets, and zero for the lowest two. Tax rate information for car dealers and leasing companies. Amount without sales tax + GST amount + QST amount = Total amount with sales taxes Calculating taxes for Quebec residents to other provinces of Canada in 2019 Regarding the sale of the book, only the GST must be taken into account in this type of calculation. Sales Tax Calculator Partner with ConvertIt. Ontariotaxcalculator is a simple, efficient and easy to use tool in Ontario to calculate sales tax HST. 0775 for the percentage. Sales & Use Tax. Zip Code Search × Help. 6%, Maricopa County has a county sales tax rate of 0. Sales tax calculator. Food sales subject to local taxes. 3125 percent), a policy designed to help local retailers compete with neighboring Delaware, which forgoes a sales tax. To calculate a sales tax gain rate for the first time, the taxing unit must first contact the Comptroller's office to obtain an estimate of the last four quarters' total dollar-volume of business activity subject to sales tax. Remember these two important formulas: Final price = price before tax + sales tax. Tax Rates: Current & Historical; Tax Types. What is VAT? VAT (value added tax) is a type of indirect consumption tax imposed on the value added to goods or services, specifically during different stages of the supply chain, which may include production, wholesale, distribution, supply, or any other stages that add value to a product. 06 (6% sales tax) = 240. FHA LOAN CALCULATORS FHA mortgage calculator with monthly payment - 2019 California Florida Illinois Maryland. VAT calculator usage: Simply enter the gross sum, choose vat calculation operation (include or exclude), tax percentage and press «Calculate» or enter button to calculate VAT amount. Deshler will start a new 1% city sales and use tax rate. Please send any questions, suggestions, or complaints to me at [email protected] Answer 1 of 4: Could anyone explain what additional fee's and taxes would be added on to a hotel stay in Atlanta, Georgia ? The hotel reservation (payable on checkout) lists the following fee's: Room Rate Hospitality Tax - 8% per night Sales Tax. This script calculates the sales tax percentage of a given purchase amount and a given sales tax amount. Nevada's sales tax rate will fall to 6. While most taxable products are subject to the combined tax rate, some items are taxed differently at the state and local levels, so be sure to apply the correct. Retailer's Use Tax Permit. Sign up for one of our Sales Tax Webinars here. , understand the forms of sales taxes used in different regions of the world, or explore hundreds of other calculators addressing topics such as finance, math, fitness, health, and many more. 572: State and Local Sales Tax Rates, 2018 (PDF) Retail sales taxes are one of the more transparent ways to collect tax revenue. To calculate the amount you owe towards HUT, follow the guidelines below. People who live in a state that does not impose income taxes often benefit most from this deduction. and Canadian tax jurisdictions with the tax rate calculator. Sales Tax Rate in the United Kingdom averaged 16. What do businesses need to know about Colorado's new sales tax law? Sign up here to get tax email updates. Sales & Use Tax Information. The sales tax is comprised of two parts, a state portion and a local portion. However, registered and logged in users may save any. Our sales tax calculator will calculate the amount of tax included in a gross price as well as the amount you should add to a net price. Zip Code Search × Help. This would mean you'd need to pay a total of $2,450 in sales taxes to drive away in your shiny sports car. The state sales and use tax rate is 5. What We Offer. Simply enter your mortgage payoffs and expenses (including the transfer tax percentage) and the home sale calculator will estimate the ideal list price from the closing costs. New Wage Statement and Withholding Tax Filing Requirements. To look up a rate for a specific address, or in a specific city or county in Virginia, use our sales tax rate lookup. STEP ONE: Look up Sales Tax Rate. FHA LOAN CALCULATORS FHA mortgage calculator with monthly payment - 2019 California Florida Illinois Maryland. Administers the interpretation, collection and enforcement of the Arkansas Sales and Use tax laws. This script calculates the sales tax percentage of a given purchase amount and a given sales tax amount. The Excel decalculator makes this an easy task by using a simple formula. Retail Sales (Miss. 77 percent from 1977 until 2019, reaching an all time high of 20 percent in 2011 and a record low of 8 percent in 1978. Percentage Calculator. 06 (6% sales tax) = 240. Local Sales and Use Tax Addendum. You can quickly calculate how much money you will have to pay using a calculator. Knowing your income tax rate can help you calculate your tax liability for unexpected income, retirement planning or investment income. 1,491 K zip for American State Sales Tax Calculator Java source, compiled class files, jar and documentation to run on your own machine either as an application or an Applet. The Ohio sales and use tax applies to the retail sale, lease, and rental of tangible personal property as well as the sale of selected services in Ohio. The student will be able to mentally calculate amount of discount, sale price, sales tax, and total cost for an item that is 10% off and 5% sales tax. 0 plus the sales tax rate. Zip Code Search × Help. com Yardeni Research, Inc. Based on applicable tax laws, eBay will calculate, collect, and remit sales tax on behalf of sellers for items shipped to customers in the following states:. Input the 'Before Tax Price' (price without tax added on). At times, sellers have additional expenses. Calculate the Sale Price of an Item on Sale. In order to determine sales tax burden we estimated that 35% of take-home (after-tax) pay is spent on taxable goods. Remember to convert the sales tax percentage to decimal format. You can quickly calculate how much money you will have to pay using a calculator. Sales Tax Rate Locator. This tax reform bill was the most comprehensive change to the United States tax code since 1986. Tax rate change notices. Don't let unexpected hotel taxes catch you by surprise. For state use tax rates, see Use Tax By State. The Tax Cuts and Jobs Act modified the deduction for state and local income, sales and property taxes. The result will not reflect your end-of-year result if you are entitled to tax credits, or have any other income such as untaxed income, interest, or dividends. Online mortgage calculator which helps to calculate how much commission rate or percentage you can get for sales. 77 KB) July 2019 Rate Chart (21. The phrases used for discounted items include, " off," "Save 50%," and "Get a 20% discount. Vertex is the leading and most-trusted provider of comprehensive, integrated tax technology solutions, having helped 10,000+ businesses since 1978. Estimate your monthly payments with Cars. The Sales Tax Calculator will calculate the sales tax for any item if you enter in the total purchase amount and the sales tax percentage. Apply the power of our sales tax calculator and automation tools to your website. For example, if you live in a state that does not impose a sales tax, you may still see tax calculated on your order if shipped to another state. Sales/Use/Lodging Tax Rate Charts The charts shown below are the City and County Rate and Codes for Sales and Use Tax. This free online Sales Tax Calculator will calculate the sales taxes on the price of a product or service given a sales tax percentage (price plus tax), and if you want, will also tell you the number of hours you will need to allocate to working in order to pay for those taxes. While tax rates vary by location, the auto sales tax rate typically ranges anywhere from two to six percent. Use this calculator to find the general state and local sales tax rate for any location in Minnesota. How to calculate HST for small businesses in Canada depends on which province or territory your place of business resides. October 2019 Rate Chart (18. The merchants collect the tax on behalf of Indiana and are held liable for the amount they should collect, even if no collection of the tax was made. The state sales and use tax rate is 5. The recent Supreme Court decision in South Dakota v. This calculator shows marginal rates for 2019. Multiply the net price of your vehicle by the sales tax percentage. Based on applicable tax laws, eBay will calculate, collect, and remit sales tax on behalf of sellers for items shipped to customers in the following states:. This page has the latest Arizona brackets and tax rates, plus a Arizona income tax calculator. Related Sales Tax Calculator. But at the point of sale, customers just pay standard sales tax. Contact the Tax Commission if you have questions about filing, paying, or what's taxable. Simple tax calculator. Sales tax is always a percentage of a product's value which is charged at the point of exchange or purchase and is indirect. Some provinces have harmonized their provincial taxes with the Goods and Services Tax GST and charge a Harmonized Sales Tax (HST) on taxable goods and services. In order to do this, though, you need to do one simple step: Convert the percent into decimal form. Tips and Guidance for Determining Sales Tax Deduction. For example, if the sales tax rate is 6%, divide the total amount of receipts by 1. Percentage Examples provided. If there's a secondary discount, enter its percent off or actual amount off. For a list of your current and historical rates, go to the California City & County Sales & Use Tax Rates webpage. The sales tax is determined by finding a percentage of the purchase price. 5%,sale price? I need a formula to use in Excel that will take a total sale and remove the sales tax from it. Zip Code Search × Help. The calculator will also display the average tax rate and marginal tax rate. Sales & Use Tax Rate on Grocery Food. Please refer to the Texas website for more sales taxes information. You can quickly calculate how much money you will have to pay using a calculator. Tax Rates & Changes. Texas state rate(s) for 2019. This would mean you'd need to pay a total of $2,450 in sales taxes to drive away in your shiny sports car. Sales tax definition is - a tax levied on the sale of goods and services that is usually calculated as a percentage of the purchase price and collected by the seller. What do businesses need to know about Colorado's new sales tax law? Sign up here to get tax email updates. Calculate: tips, sales price, percent off, discounted price, price with sales tax, etc. The right sales tax rate for every order. In that case, the tax generally is called use tax rather than sales tax – and customers often simply did not pay use tax to the state. So if the sales tax in your area is 8 percent, you have: 100 + 8 = 108 percent. Sales Tax Rate in Japan averaged 6. Please send any questions, suggestions, or complaints to me at [email protected] To find out how much you'll have to pay at the checkout when you know the tag price, use this formula:. 1 to 1 percent and are added to the state sales tax rate as a surtax. I asked if I could just charge a flat sales tax rate, and eat the extra costs, no. Most Idaho sales tax exemptions also apply to use tax. GST sometimes knows as the GST (G ouge and S crew T ax). For example, if you live in a state that does not impose a sales tax, you may still see tax calculated on your order if shipped to another state. Tax Reform may affect your bracket, credits, deductions, and so on. The tax cuts and jobs act modified the deduction for state and local. Add or subtract a percentage. The sales tax due amount is 7 percent of total taxable sales. Besides the general tax levy that is frozen at 1 percent of property value, you might have to pay voter-approved bond indebtedness. The Sales Tax Gain Rate. The SalesTaxHandbook Sales Tax Calculator is a free tool that will let you look up sales tax rates, and calculate the sales tax owed on a taxable purchase, for anywhere in the United States. Sales/Use/Lodging Tax Rate Charts The charts shown below are the City and County Rate and Codes for Sales and Use Tax. The use tax rate and sales tax rates are the same. Calculate Sales Tax in Nevada. The sales tax is comprised of two parts, a state portion and a local portion. After that, it will calculate the compound interest, estimate tax and title. 6 percent and outputs in. The data format is a simple, fixed-length text file containing approximately 40,000 U. The percent off calculation formula is as follows Sale price = Original price. As of 10/1/2019. Sales and Use Tax Rates vary across cities and counties in addition to what is taxed by the State. Our sales tax calculator will calculate the amount of tax included in a gross price as well as the amount you should add to a net price. calculate the percent of a number. Tax Rate (TXT) File | [07/18/2019] Note: This file format has changed so please check it before use within software. Percentage Calculator. To calculate the tax on your property, assume you have a house with an APPRAISED VALUE of $100,000. The pre-tax option allows you to add sales taxes to the sale price of the item(s). If however, I under charge someone for sales tax, I have to make up the difference out of my income on the billing. Every state with a sales tax also has a use tax. Calculating sales tax is probably easier than you think. Municipal sales and use tax does not apply to the sale or use of motor fuels that are subject to the motor fuel excise taxes imposed by article 14C, chapter 11 of the Code. Without an employer withholding Social Security and Medicare taxes from your paycheck, you need to calculate and pay those taxes yourself. The data format is a simple, fixed-length text file containing approximately 40,000 U. Other counties in TN may have a higher or lower county tax rate (applied to the first $1600). The Income Tax Department NEVER asks for your PIN numbers, passwords or similar access information for credit cards, banks or other financial accounts through e-mail. org Property Tax Estimator uses county-level property tax statistics to estimate any property's tax burden based on the value of the property and the median percentage of home value collected as property tax in the applicable locality. Unadilla will start a new 1. I asked if I could just charge a flat sales tax rate, and eat the extra costs, no. samsonite94. To use the rate calculator, type in the name of the city where the store is located (not necessarily the same city where you live). The rate charts range from 7. As of 2012, the sales tax rate was 6 percent. It is enough to fill the available sections - Description, Quantity, Price, Per (number of items), Delivery Charge, VAT rate % and Discount Percent. If your business is not a C corporation (aka a flow-through entity), your tax rate will depend on your taxable income and your filing status. During data inputting our calculator will immediately display the total sum. 9% Medicare tax on the amount that your annual income exceeds $200,000 for single filers, $250,000 for married filing jointly, and $125,000 married filing separate. Easy and Simple to use. EarthOdyssey, LLC, is a company in the business of innovation. Knowing your income tax rate can help you calculate your tax liability for unexpected income, retirement planning or investment income. The result will not reflect your end-of-year result if you are entitled to tax credits, or have any other income such as untaxed income, interest, or dividends. To calculate your North Carolina tax liability, multiply your North Carolina taxable income by 5. State Administered Local Tax Rate Schedule; Monthly Tax Rates Report; Monthly Lodgings Tax Rates Report; Notices of. To calculate the sale price, subtract the discount from original price. Remember these two important formulas: Final price = price before tax + sales tax. How do I calculate the amount of sales tax that is included in total receipts? Sales Tax Calculation. What is % of ? % is what percent of ? % What is the percentage increase. We have sales tax calculator for you which you can use anytime sitting anywhere just by entering the amount and sales tax rate. Though tax rates vary by state and city, the formula to calculate your vehicle tax is: purchase price times the sales tax percentage. The general state tax rate is 7%. Sales tax is always a percentage of a product's value which is charged at the point of exchange or purchase and is indirect. This free online Sales Tax Calculator will calculate the sales taxes on the price of a product or service given a sales tax percentage (price plus tax), and if you want, will also tell you the number of hours you will need to allocate to working in order to pay for those taxes. The Texas's tax rate may change depending of the type of purchase. District tax rates range from 0. $255 divided by 1. The calculator will show you the total sales tax amount, as well as the county, city, and special district tax rates in the selected location. Calculate a simple single sales tax and a total based on the entered tax percentage. Sales Tax Calculator Partner with ConvertIt. edu/oktax/ to download the files. I know the shipping/handling charge is 7%. If you itemize deductions on Schedule A, your total deduction for state and local income, sales and property taxes is limited to a combined, total deduction of $10,000 ($5,000 if married filing separately). Total Price is the final amount paid including sales tax. Reduces the State and Local Tax Deduction: State and local property taxes up to $10,000 can be deducted, in addition to income taxes or sales taxes. Knowing your income tax rate can help you calculate your tax liability for unexpected income, retirement planning or investment income. We multiplied the average sales tax rate for a county by the household income less income tax. The next portion of your income is taxed at the next tax bracket of 12 percent. There are two ways of calculating sales tax backwards from the total: Either you can use the post-tax cost of the item and the tax rate to figure out how much tax you paid, or use the post-tax cost of the item and the amount of tax paid to calculate the tax rate. and Canadian tax jurisdictions with the tax rate calculator. Sales Tax Interest Rate (APR). If there's a secondary discount, enter its percent off or actual amount off. 5% is just 2. July 2019; Tax Rates: Current & Historical; Rate Charts; Special Taxes ; 911 Emergency Surcharge. Download FISCAL FACT No. Tax rate change notices. Access tax rates for over 11,000 U. The tax applied on the sale of goods is referred to as sales tax. To use this sales tax calculator, enter the Subtotal amount that is taxable. The percentage calculator allows you to find out what the amount, the percentage, the percent amount, the percent increase or the percent decrease is, if you know any of the two. Sales tax is collected on the sale of merchandise within Indiana. Sales tax or consumption tax is the value percentage of goods, leases or service collected by governments. The Sales Tax Calculator will not only calculate sales tax but also show you the total amount that you will have to pay after including the sales tax. The state sales and use tax rate is 5. If a dealer charges and. Use this app to split bills when dining with friends, or to verify costs of an individual purchase. The tax rate applied to your order will be the combined state and local rates of the address where your order is delivered to or fulfilled from. 725 percent in Tuba City, Ariz. Free calculator to find any value given the other two of the following three: before tax price, sales tax rate, and after-tax price. You may also want to try our markup/margin with VAT calculator or the markup/margin with sales tax calculator. How much is tax and the final retail price including tax? Firstly, if the tax is expressed in percent, divide the tax rate by 100. samsonite94. Sales Tax Rate in Japan averaged 6. Important Information When Municipalities Pass Tax Rate Changes. • No sales tax on clothing or footwear under $110. Please send any questions, suggestions, or complaints to me at [email protected] In order to determine sales tax burden we estimated that 35% of take-home (after-tax) pay is spent on taxable goods. Calculate Sales Tax in South Dakota. This free online Sales Tax Calculator will calculate the sales taxes on the price of a product or service given a sales tax percentage (price plus tax), and if you want, will also tell you the number of hours you will need to allocate to working in order to pay for those taxes. Texas imposes a 6. This calculator helps you estimate your average tax rate, your tax bracket, and your marginal tax rate for the current tax year. Current Tax Rates, Tax Rates Effective April 1, 2018, Find a Sales and Use Tax Rate by Address, Tax Rates by County and City, Tax Rate Charts, Tax Resources, The following files are provided to download tax rates for California Cities and Counties. Tax Rate Charts show how much sales tax is due based on the amount of a sale. Tax Treaty calculator for non-resident professionals (232KB) Check eligibility for tax treaty exemption and complete IR586 online. The calculator takes into consideration, wages, salaries, income, adjustments to income, deductions, as well as exemptions. Check table bellow what kind of sales tax applies to each Canadian province/territory. For purchases in person from your store, input the store City & Zip Code. The rate you charge your. Practice solving percent word problems involving price discounts, price markups, and commission fees. Sections 27-65-17, 27-65-20 & 27-65-25) The following are subject to sales tax equal to 7% of the gross proceeds of the retail sales of the business, unless otherwise provided:. The tax rate in Arizona is 5. Sales tax = sales tax rate x price before tax. 43 percent from 2006 until 2019, reaching an all time high of 10 percent in 2019 and a record low of 5 percent in 2007. This also includes a general listing of items that are exempt from the Massachusetts sales and use. Keep on reading to find out what is markup, how to calculate markup and what is the difference between margin vs markup. Sales = 551,000. This calculator helps you estimate your average tax rate for. However, registered and logged in users may save any. A free sales tax calculator can save you the trouble of pondering over complex sums and figures. , for 6%, enter 6) and the calculator will include sales tax in its calculations. Is something on sale, advertised at "so much" percent off? How much is it going to cost? This page will show you how to. You can also calculate the total purchase price using the Sales Tax Calculator or generate a table of sales tax due for various prices using the Sales Tax Table. Calculate the Sale Price of an Item on Sale. How to calculate sales tax? Learn how to calculate sales tax by following these examples: 1) You buy a item on Ebay for 100 dollars and pay 7. 125 and 6 percent would equal. If you want to sell or advertise an item at a price that includes sales tax, you cannot use the sales tax rate (percentage) to calculate a deduction from the sale price to know the net selling price. 41 KB) January 2019 Rate Chart (289. Sales calculators online for calculations related to sales including sales variables in marginal analysis for gross margin, gross profit, markup, revenue and cost. Tax Rate Charts show how much sales tax is due based on the amount of a sale. Enter sales tax if applicable and you want it reflected in the final price; Sales tax is applied after all discounts. Nevada sales tax rate is scheduled to fall to 6. Then hitting the calculate button will give you the total sum after sales tax. Sales Tax Calculator (Add Tax) ? This script calculates the Final Price including Tax and the Sale Tax value to be added. Access tax rates for over 11,000 U. To calculate a sales tax gain rate for the first time, the taxing unit must first contact the Comptroller's office to obtain an estimate of the last four quarters' total dollar-volume of business activity subject to sales tax.