How to Read the Calculator Inputs and Results
Calculator inputs define the tax context, taxable total, rate, and display settings used by the reverse tax calculation. Calculator results then show the recovered original amount, the included tax amount, and the check values that rebuild the tax-inclusive total.
Tax Type
Tax Type identifies the percentage-based tax contained in the amount you want to reverse, such as VAT, sales tax, GST, HST, PST, QST, or another custom tax. The selected tax type establishes transaction context and helps align the country and tax-rate settings. The numerical result is calculated from the tax-inclusive amount and tax rate, so the selected type should match the tax shown on the receipt or invoice.
Country
Country identifies the tax jurisdiction connected to the transaction. The country selection links the chosen tax type to relevant local tax settings and determines how monetary results are presented. Because tax rates can vary by state, province, product, service, and transaction date, confirm the actual tax rate from the receipt or invoice instead of relying only on the country selection.
Tax Rate (%)
Tax Rate is the percentage originally applied to the amount before tax. The calculator converts this percentage into a tax factor and divides the tax-inclusive amount by that factor to recover the original amount. Enter the percentage as a number, such as 20 for 20% or 8.25 for 8.25%, rather than entering the monetary tax amount.
Tax-Inclusive Amount
Tax-Inclusive Amount is the final price after tax has been added. It is the starting value that the calculator separates into the original amount before tax and the tax amount included in the transaction. Enter the complete total from the receipt, invoice, or checkout, and exclude unrelated tips, fees, or differently taxed items when they are not part of the same taxable base.
Round Off
Round Off controls the number of decimal places shown in the calculator's monetary results. It applies the selected precision to the original amount, tax amount, and tax-inclusive total without changing the reverse-tax formula. A result may differ slightly from a receipt when the seller rounded each item separately but the calculator rounds the completed calculation.
Calculation Type
Calculation Type determines which reverse-tax output the result section emphasizes: the original amount, the tax amount, or both values. The setting changes the presentation of the result but does not change the relationship between the tax-inclusive amount and tax rate or the formula used to calculate them.
Show Breakdown
Show Breakdown controls the visibility of the detailed calculation steps. When enabled, the breakdown connects the entered tax-inclusive amount and tax rate with the calculated original amount and tax amount so the result can be checked. Hiding the breakdown does not alter or recalculate any value.
Calculate Reverse Tax
Calculate Reverse Tax processes the entered tax-inclusive amount and tax rate using the selected calculator settings. It recovers the original amount before tax, calculates the tax amount contained in the total, and updates the result, calculation breakdown, and visual breakdown.
Reset
Reset clears the current inputs and calculated outputs so a new reverse-tax calculation can begin. It removes the previous tax rate and tax-inclusive amount and restores the calculator's default selections without saving the earlier result.
Original Amount (Tax Exclusive)
Original Amount is the calculated price before tax was added. The calculator recovers it by dividing the tax-inclusive amount by 1 + Tax Rate / 100, because the entered rate was originally applied to this smaller pre-tax value. When combined with the calculated tax amount, the original amount reconstructs the complete tax-inclusive total.
Tax Amount
Tax Amount is the monetary portion of the entered total that represents tax. The calculator finds it by subtracting the original amount from the tax-inclusive amount, rather than applying the tax percentage directly to the larger final total. It connects the pre-tax price to the final price through the relationship Original Amount + Tax Amount = Tax-Inclusive Amount.
Tax-Inclusive Total
Tax-Inclusive Total displays the complete amount containing both the original amount and the tax amount. It should match the tax-inclusive amount entered at the beginning of the calculation and serves as a check that both calculated parts return to the original total.
Calculation Breakdown
Calculation Breakdown shows how the calculator converts a tax rate into a reverse-tax factor and applies that factor to the tax-inclusive amount. The breakdown lists the input total, rate, original amount, and tax amount so the calculation can be checked. Minor differences from a receipt can occur when different rounding methods were used.
Visual Breakdown
Visual Breakdown compares the original amount with the tax amount inside the final tax-inclusive total. The two shares represent the complete composition of the entered amount and should add to 100%, apart from minor display-rounding differences. This relationship lets users see both the monetary split and the relative size of each component.
What Is a Reverse Tax Calculator?
A reverse tax calculator is a tool that starts with a final tax-inclusive amount and works backward to find the original price before tax. In normal tax calculation, tax is added to a price. In reverse tax calculation, the tax is already inside the total, so the calculator separates it into two clear objects: the pre-tax price and the tax amount.
People search for this in different ways. You might call it:
- remove tax from total
- calculate tax backwards
- find price before tax
- reverse sales tax
- reverse VAT
- reverse GST
- tax included calculator
- pre-tax price calculator
- find tax amount from total
These phrases point to the same basic task: you are not adding tax, you are unpacking a total that already includes tax.
Is Reverse Tax the Same as a Refund?
No. Reverse tax tells you how much tax is inside a total. It does not decide whether you can claim that tax back, deduct it, or get a refund.
For example, if a receipt total is $108.25 and the tax inside it is $8.25, the calculator can show the $8.25. Whether that $8.25 is refundable depends on the tax law, your business status, your records, and the type of purchase.
Is Reverse Tax the Same as Reverse Charge?
No. Reverse charge is a tax rule about who reports or pays VAT or GST. Reverse tax calculation is just the math used to split a total into pre-tax price and tax.
If your invoice says reverse charge, you may still need tax advice or an accounting rule. If your invoice simply includes tax in the total, this calculator can help you separate the numbers.
Need the simple definition first? Read what reverse tax means in plain English.
How Do You Use the Reverse Tax Calculator?
Use the calculator when you already know the final price and want to see what part was tax. You only need two numbers: the total amount after tax and the tax rate that was used. This is useful when a receipt says tax included, an invoice shows one final amount, a marketplace payout hides the tax inside the sale, or a customer asks how much of a refund is tax. If your total is specifically a store receipt, the Reverse Sales Tax Calculator gives you a sales-tax-only version of the same calculation.
Here is the simple flow:
- Choose the tax type, such as sales tax, VAT, GST, HST, PST, QST, or another percentage tax.
- Choose the country or location if you want the calculator to suggest common rates.
- Enter the tax-inclusive amount, which is the final amount on the receipt or invoice.
- Enter the tax rate, such as 8.25%, 13%, 18%, or 20%.
- Click calculate to see the price before tax and the tax amount.
The result should always pass this check:
Price before tax + Tax amount = Final totalIf it does not add back to the final total, something else may be happening, such as rounding, mixed tax rates, exempt items, tips, shipping, or local tax.
What If You Do Not Know the Tax Rate?
If you do not know the tax rate, do not guess first. Look at the receipt, invoice, checkout page, or tax summary because the rate charged on the transaction is the best starting point.
If you know the subtotal and the final total, you can work out the rate. If you only know the final total, there is no single exact answer because many tax rates can produce the same final amount.
| You have | You can find | Best next step |
|---|---|---|
| Final total + tax rate | Price before tax and tax amount | Use this reverse tax calculator |
| Final total + subtotal | Tax rate | Use the implied tax rate calculator |
| Final total + tax amount | Price before tax | Use the included tax amount calculator or subtract the known tax amount |
| Receipt with more than one tax rate | Separate pre-tax amounts | Group the items before calculating |
| CSV or many transactions | Batch tax split | Use a batch calculator |
Want the full walkthrough? Open the step-by-step reverse tax calculator guide.
How Does Reverse Tax Work?
Reverse tax works by dividing the final total by the tax factor. The tax factor is 1 + tax rate, written as a decimal.
Here is the idea in plain language. If a $100 item has 8.25% tax added, the seller multiplies $100 by 1.0825 and gets $108.25. To reverse that, you do the opposite and divide $108.25 by 1.0825.
Final total = Price before tax x 1.0825
Price before tax = Final total / 1.0825That is why reverse tax is a division problem, not a subtraction shortcut.
What Is the Reverse Tax Formula?
The reverse tax formula is:
Price before tax = Final total / (1 + Tax rate / 100)
Tax included = Final total - Price before taxExample with $108.25 and 8.25% tax:
Price before tax = 108.25 / (1 + 8.25 / 100)
Price before tax = 108.25 / 1.0825
Price before tax = 100.00
Tax included = 108.25 - 100.00
Tax included = 8.25So the final total is $108.25, the original price is $100.00, and the tax included is $8.25.
Why Does the Calculator Divide Instead of Subtract?
The calculator divides because the tax rate was applied to the original smaller price, not to the larger final total.
If you subtract 8.25% from $108.25, you are taking 8.25% of the wrong number. That gives $99.32, not $100.00. It is close enough to look believable, but it is still wrong.
Wrong method: 108.25 - 8.25% of 108.25 = 99.32
Right method: 108.25 / 1.0825 = 100.00Want to see the formula slowly? View the reverse tax formula with examples.
Why Is Subtracting the Tax Percentage Wrong?
Subtracting the tax percentage is wrong because the final total already contains the original price plus tax. The tax percentage belongs to the original price, not to the final total.
Think of it like this:
Original price: 100.00
Tax at 8.25%: 8.25
Final total: 108.25The 8.25% tax was calculated from $100.00. If you take 8.25% from $108.25, you are using a bigger base. That removes too much money and gives a lower pre-tax price than the real one.
When Does the Subtraction Mistake Become a Big Problem?
The mistake grows when the total is large or the tax rate is high. A few cents on a small receipt can turn into dollars on invoices, rent, business purchases, ecommerce payouts, or imported goods.
For a 20% VAT-inclusive price of 120.00:
Wrong: 120.00 - 20% = 96.00
Right: 120.00 / 1.20 = 100.00That is a 4.00 difference on a simple 120.00 total.
Still tempted to subtract the percentage? See why subtracting tax from the total gives the wrong answer.
What Is the Difference Between Tax-Inclusive and Tax-Exclusive Price?
A tax-inclusive price already has tax inside it. A tax-exclusive price does not include tax yet.
If a store shows 120.00 including 20% VAT, the price is tax-inclusive. If a quote says 100.00 plus VAT, the price is tax-exclusive.
| Price type | What you see | What you do |
|---|---|---|
| Tax-inclusive | Final price already includes tax | Reverse the tax to find the original price |
| Tax-exclusive | Tax still needs to be added | Add tax to find the final price |
How Do You Know Which One You Have?
Look for words near the amount. Common clues include:
- includes tax
- tax included
- inclusive of VAT
- inc GST
- tax extra
- plus sales tax
- excluding VAT
- before tax
If the wording is unclear, use the receipt math. If subtotal plus tax equals the total, the subtotal is probably the pre-tax price. If the displayed price equals the final amount paid, it is probably tax-inclusive.
Unsure which price type you have? Compare tax-inclusive and tax-exclusive pricing.
What Is Pre-Tax Price vs Post-Tax Price?
The pre-tax price is the amount before tax is added. The post-tax price is the final amount after tax is included.
Here is a quick example:
Pre-tax price: 100.00
Tax at 10%: 10.00
Post-tax price: 110.00When you use a reverse tax calculator, you already have the post-tax price and you want to find the pre-tax price.
Is the Subtotal Always the Pre-Tax Price?
Usually, but not always. Some receipts use subtotal before discounts. Others use subtotal before tax. Some show service charges, delivery, tips, deposits, or fees in separate lines.
Before you calculate, check what the subtotal actually includes. If the receipt has taxable and non-taxable lines, the subtotal may not be the same as the taxable base.
Want receipt examples? Learn pre-tax and post-tax price with examples.
What Is Net Price vs Gross Price?
Net price often means the price before tax, and gross price often means the price after tax, but the meaning can change by country, industry, and document type.
For sales tax, VAT, and GST receipts, many people use:
| Term | Common meaning |
|---|---|
| Net price | Price before tax |
| Gross price | Price after tax |
| Tax amount | The tax included or added |
| Total | The amount paid |
Why Should You Be Careful With Net and Gross?
Because net and gross are not always tax words. In payroll, gross pay can mean pay before deductions. In accounting, net may mean after discounts or after returns. On invoices, net terms may refer to payment due dates, such as net 30.
If the document uses net or gross, do not rely on the word alone. Check whether the numbers add up.
Need help with invoice wording? Compare net price and gross price in tax calculations.
How Do You Find the Tax Amount from a Total?
To find the tax amount from a tax-inclusive total, first find the price before tax, then subtract it from the final total.
Formula:
Tax amount = Final total - (Final total / (1 + Tax rate / 100))Example with a 20% VAT-inclusive total of 120.00:
Price before tax = 120.00 / 1.20 = 100.00
Tax amount = 120.00 - 100.00 = 20.00For 20% VAT, there is also a quick shortcut:
VAT included = VAT-inclusive total / 6That shortcut works because 20 is one-sixth of 120. It does not work for every tax rate, so use the formula when you are unsure.
Can You Find Tax from the Total Without the Rate?
Not exactly. You need the rate, the subtotal, or the tax amount. Without one of those, the final total can be split in many possible ways.
For example, a total of 100.00 could be:
- 95.24 before tax with 5% tax
- 90.91 before tax with 10% tax
- 83.33 before tax with 20% tax
Same total, different tax splits.
Want the tax-only number? Use the guide to find tax amount from a total.
How Do You Find the Tax Rate from the Total?
You can find the tax rate if you know both the final total and the price before tax. The rate is the tax amount divided by the price before tax.
Formula:
Tax rate = ((Final total - Price before tax) / Price before tax) x 100Example:
Final total = 108.25
Price before tax = 100.00
Tax amount = 8.25
Tax rate = (8.25 / 100.00) x 100
Tax rate = 8.25%Why Might the Rate Look Strange?
The rate may look strange because the receipt includes local taxes, special district taxes, environmental fees, mixed item rates, or rounding. In the United States, a receipt rate is often a combined state and local rate. In Canada, GST, PST, HST, or QST can appear depending on the province. In India, CGST, SGST, or IGST may appear separately.
If the calculated rate is close but not exact, check the line items before assuming the seller made a mistake.
Have the subtotal but not the rate? Learn how to find the tax rate from a receipt total.
What Tax Rate Should You Enter?
Enter the rate that was actually charged on the receipt or invoice. That rate is more useful than a general rate you found online because the real transaction may include local tax, reduced rates, exemptions, or special rules.
Ask these questions before entering a rate:
- Where did the sale happen or where was the item delivered?
- What product or service was sold?
- Was the buyer a consumer, a business, or a tax-exempt organization?
- Were there separate local taxes, provincial taxes, or district taxes?
- Did the transaction happen before or after a rate change?
- Did the receipt include tips, shipping, fees, or deposits?
What If Some Items Were Exempt or Zero-Rated?
If some items were exempt or zero-rated, please do not run the whole receipt through one rate. That will mix taxable and non-taxable amounts together and the result will not be reliable.
Instead, split the receipt into groups:
| Receipt group | What to do |
|---|---|
| Standard-rate items | Reverse with the standard rate |
| Reduced-rate items | Reverse with the reduced rate |
| Zero-rated items | Keep tax as 0 |
| Exempt items | Do not calculate tax on those lines |
| Tips or service charges | Check local treatment before including them |
| Shipping or delivery | Check whether the charge is taxable |
This takes a little longer, but it gives you a result you can explain later.
Not sure which rate to enter? Use the guide to choose the correct tax rate.
What Are the Standard Tax Rates by Location?
Use these rate tables as a starting point, then confirm the rate from your receipt or official tax authority. Tax rates can change, and the correct rate can depend on product type, local area, delivery location, date, and exemption status.
Canada
Canada can use GST, HST, PST, RST, or QST depending on the province. For a normal taxable purchase, the combined rate below is often the rate you reverse from a tax-inclusive total.
| Location | Tax system | Standard combined rate | What to watch |
|---|---|---|---|
| Quebec | 5% GST + 9.975% QST | 14.975% | GST and QST usually appear together when both apply |
| Ontario | HST | 13% | One harmonized rate |
| British Columbia | 5% GST + 7% PST | 12% | GST and PST exemptions can differ |
| Alberta | GST | 5% | No general provincial sales tax |
| Manitoba | 5% GST + 7% RST | 12% | RST rules can differ from GST rules |
| Nova Scotia | HST | 14% | Confirm the transaction date |
| Saskatchewan | 5% GST + 6% PST | 11% | PST and GST can apply differently |
If you bought online, the delivery province may matter. If the receipt separates GST from PST or QST, reverse the combined rate only when both taxes apply to the same taxable base.
Source: Canada Revenue Agency GST/HST calculator and rates.
United States
The United States does not have one national sales tax rate. The rate can include state, county, city, district, transit, and special local taxes.
| Location | State base or general rate | What to watch |
|---|---|---|
| New York | 4% | Local rates can raise the total, New York City is a common example |
| New Jersey | 6.625% | Some zones and exemptions can change the effective rate |
| Texas | 6.25% | Local tax can bring the combined rate up to 8.25% |
| California | 7.25% statewide base | District taxes can add more |
| Florida | 6% | County surtax can apply |
If your receipt shows a higher rate than the state rate, it may be correct because local sales tax was included. Reverse the combined rate that was actually charged.
Sources: New York State sales tax rates, California CDTFA sales and use tax rate guidance, and Texas Comptroller local sales and use tax guide.
View Full United States Tax Rates
United Kingdom
The United Kingdom usually uses VAT, and many consumer prices are already VAT-inclusive.
| VAT category | Rate | What to watch |
|---|---|---|
| Standard rate | 20% | Most taxable goods and services |
| Reduced rate | 5% | Certain qualifying goods and services |
| Zero rate | 0% | Taxable at 0%, not the same as exempt |
For a 20% VAT-inclusive price, divide the total by 1.20 to find the price before VAT. The VAT inside the total is one-sixth of the VAT-inclusive total.
Source: UK Government VAT rates
View Full United Kingdom Tax Rates
Australia
Australia uses GST, and the standard GST rate is 10%. For a fully taxable GST-inclusive sale, the GST portion is usually one-eleventh of the total.
| Australia GST item | Rate or rule | What to watch |
|---|---|---|
| Standard GST | 10% | Most taxable sales |
| GST-inclusive shortcut | 1/11 of total | Works for fully taxable 10% GST-inclusive sales |
| GST-free sales | 0% | Not the same as input-taxed |
| Input-taxed sales | GST usually not charged | Common in some financial supplies and residential rent |
| Receipt wording | Includes GST, GST included, inc GST | Usually means the displayed total already includes GST |
Example: if the GST-inclusive total is A$110, the price before GST is A$100 and GST is A$10.
Source: Australian Taxation Office GST overview
India
India uses GST with multiple rate slabs. Intra-state invoices often split GST into CGST and SGST. Inter-state invoices usually show IGST.
| GST rate | Common split on intra-state sales | What to watch |
|---|---|---|
| 5% | 2.5% CGST + 2.5% SGST | Reduced rate items |
| 12% | 6% CGST + 6% SGST | Selected goods and services |
| 18% | 9% CGST + 9% SGST | Common standard slab |
| 28% | 14% CGST + 14% SGST | Higher slab items |
Do not assume 18% applies to every Indian invoice. Many bills mix slabs, and each slab should be reversed separately.
Source: CBIC GST goods and services rates
Pakistan
Pakistan can have federal sales tax on goods and provincial sales tax on services. The correct rate depends on what was sold and which authority applies.
| Category or location | General rate | What to watch |
|---|---|---|
| Federal standard-rated goods | 18% | Applies under federal sales tax rules |
| Punjab services | Generally 16% | Service type can change treatment |
| Sindh services | Generally 15% | Check provincial rules |
| Khyber Pakhtunkhwa services | Generally 15% | Check service category |
| Balochistan services | Generally 15% | Check service category |
| Islamabad services | Generally 15% | Check invoice wording |
For Pakistan, do not use the federal goods rate for every service invoice. Check whether the invoice points to FBR or a provincial revenue authority.
Source: Federal Board of Revenue sales tax overview. For provincial services, confirm the rate with the relevant provincial revenue authority before reversing the invoice total.
Which Reverse Tax Calculator Should You Use for VAT, GST, HST, PST, and QST?
VAT, GST, HST, PST, QST, and sales tax use the same reverse-tax relationship when one percentage rate applies to one taxable base. The right page depends on the tax label, country, and receipt structure. Use the homepage calculator for a simple single-rate total, then move to a focused calculator when the receipt needs a clearer tax label or a different calculation path.
| Your situation | Use this page | Why |
|---|---|---|
| VAT-inclusive price, such as a UK or EU-style receipt | Reverse VAT Calculator | Uses VAT wording and VAT-inclusive examples |
| Canadian receipt with GST, HST, PST, RST, or QST | Reverse GST/HST/PST/QST Calculator | Matches Canadian tax labels and combined-rate cases |
| US store receipt with state and local sales tax | Reverse Sales Tax Calculator | Keeps the task focused on sales-tax receipts |
| Receipt has more than one tax line or stacked taxes | Multiple and Stacked Tax Calculator | Handles combined, separate, or compounded tax structures |
| You know subtotal and total but not the rate | Implied Tax Rate Calculator | Finds the rate instead of forcing a guessed percentage |
If GST and QST, GST and PST, or state and local sales tax are charged on the same taxable base, the combined percentage can usually be reversed as one rate. If the receipt uses different taxable bases, exemptions, or item groups, separate the lines before calculating.
What If Your Receipt Has More Than One Tax?
If your receipt has more than one tax, first check whether the taxes were added to the same pre-tax amount. If they were, you can often add the rates together. If one tax was applied after another tax, the effective rate is compounded and you should not simply add them. When the receipt has stacked tax lines or separate taxable groups, the Multiple and Stacked Tax Calculator is the better fit than a single-rate reverse calculation.
Additive example:
5% GST + 7% PST = 12% combined rate
Reverse factor = 1.12Compounded example:
1.05 x 1.08 = 1.134
Effective rate = 13.4%How Should You Handle Mixed Rates on One Receipt?
Mixed rates need separate calculations. Food, clothing, digital services, alcohol, lodging, shipping, and marketplace fees can be taxed differently depending on location.
Use this simple rule:
One rate, one calculation.
Two rates, two calculations.
Exempt items, keep them out of the taxable base.Have more than one rate on the receipt? Use the multiple tax reverse calculation guide.
Why Does Your Result Not Match the Receipt?
Your result may not match the receipt because the receipt was rounded differently, used local tax, included exempt items, or calculated tax on each line instead of the final total. A mismatch does not always mean the calculator or seller is wrong.
| What you notice | Likely reason | What to try |
|---|---|---|
| Off by 1 cent | Per-line rounding | Reverse each taxable line |
| Off by a small percentage | Missing local tax | Use the combined rate |
| Large difference | Mixed taxable and exempt items | Split the receipt into groups |
| Difference equals a tip or fee | Charge was treated separately | Remove it before calculating |
| Two tax lines | More than one tax system | Check whether taxes share the same base |
| Old receipt does not match | Rate changed | Use the rate from the transaction date |
Why Are You Off by One Cent?
One-cent differences usually come from rounding. A seller may calculate and round tax for each item. A calculator may calculate tax on the total and round once. Both methods can create a tiny difference.
If you need to match a receipt exactly, copy the receipt method: item by item, same rate, same rounding, same decimal places.
Result looks different from the receipt? Troubleshoot why the reverse tax result does not match.
When Would You Use a Reverse Tax Calculator?
You use a reverse tax calculator when the tax is already included in the number in front of you and you need the split. That happens more often than people think.
How Do You Check a Receipt?
Use the calculator to confirm whether the tax amount looks reasonable. If the receipt has one taxable rate, the total and rate may be enough. If the receipt has mixed items, calculate each group separately.
How Do You Verify an Invoice?
Use the reverse result to recreate the supplier's tax base. If your result does not match, check discounts, shipping, exempt items, currency conversion, and rounding before you challenge the invoice.
How Do You Process a Refund?
For a refund, use the tax rate and item treatment from the original sale. A partial return should reverse the returned item, not the entire receipt.
How Do You Separate Revenue from Tax?
If you sell tax-inclusive products, the full amount collected is not all revenue. The calculator helps split sales income from tax collected so your records are cleaner.
How Do You Reconcile Marketplace Payouts?
Marketplace payouts can include sales, tax, fees, refunds, shipping, and withheld amounts. Separate those pieces first. Then reverse only the tax-inclusive sale amount that belongs in the calculation.
Want examples like your situation? See worked reverse tax examples for receipts, invoices, refunds, and payouts.
How Do You Calculate Reverse Tax in Excel or Google Sheets?
Use Excel or Google Sheets when you have many totals to split. Put the tax-inclusive total in one column and the tax rate in another column.
If A2 contains the final total and B2 contains a percentage like 8.25%, use:
=A2/(1+B2)If B2 contains the plain number 8.25, use:
=A2/(1+B2/100)To find the tax amount:
=A2-(A2/(1+B2))How Should You Format a Spreadsheet?
Keep these columns:
| Column | What to store |
|---|---|
| Transaction date | Needed if rates changed |
| Location | Helps confirm local tax |
| Tax-inclusive total | Final amount |
| Tax rate | Rate used |
| Price before tax | Formula result |
| Tax included | Formula result |
| Notes | Rounding, exemption, receipt reference |
Working in a spreadsheet? Copy the reverse tax Excel and Google Sheets formulas.
Can You Use This Calculator for Income Tax or Payroll Tax?
Not for a full income tax or payroll calculation. This calculator is built for percentage-based taxes such as sales tax, VAT, GST, HST, PST, and QST.
Income tax and payroll tax can involve brackets, deductions, credits, allowances, social contributions, benefits, and employer rules. Those need a different calculator. If you are working from take-home pay toward a gross pay target, use the Reverse Payroll / Net-to-Gross Calculator instead.
Use a reverse income tax calculator when you are trying to estimate gross income from take-home pay. Use a reverse payroll calculator when deductions and payroll rules are involved.
Need after-tax income instead? Open the reverse income tax calculator guide.
About This Calculator
This calculator is designed to make a tax-inclusive total easier to understand. It shows the original price, tax included, tax rate, formula, and check calculation so you can see where each number came from.
Use it when you want a quick, clear split. If the receipt is complicated, slow down and separate the parts first. That is the difference between a number that looks right and a number you can actually trust.
Ready to go deeper? Start with the reverse tax calculator guide.