Sales tax and value-added tax rates vary enormously depending on where you are. A reverse tax calculation in Texas looks different from one in Quebec, and both differ from a reverse UK tax calculation. This guide covers the specific tax rates and reverse tax formulas for the most commonly searched jurisdictions — US states, Canadian provinces, and the United Kingdom — so you can accurately find the pre-tax price no matter where your transaction took place.
The Universal Reverse Tax Formula (Quick Reminder
Before diving into rates by location, the formula is always:
Pre-Tax Price = Total Paid ÷ (1 + Tax Rate)
For example, if you paid $113 in Ontario (HST = 13%):
Pre-Tax = $113 ÷ 1.13 = $100.00
Every location-specific example in this guide uses this same formula — only the rate changes.
United States: Reverse Tax by State
The US has no federal sales tax. Each state sets its own rate, and many states allow counties and cities to add additional local taxes on top, creating a combined effective rate. For a precise reverse sales tax calculation, always use the combined rate for the specific locality.
Reverse Tax — New Jersey (NJ)
New Jersey has a statewide sales tax rate of 6.625%. There is no additional local tax in most areas, making the reverse tax calculation in NJ straightforward.
Formula: Pre-Tax = Total ÷ 1.06625
Example: Total = $53.25 Pre-Tax = $53.25 ÷ 1.06625 = $49.94 Tax = $53.25 − $49.94 = $3.31
The reverse tax calculator NJ rate of 6.625% applies statewide, so this formula works consistently across the state.
Reverse Tax — New York (NY) and New York City (NYC)
New York State has a base rate of 4%, but counties and cities add their own surcharges. The reverse tax calculator New York calculation must account for the local rate.
- New York State only: 4%
- New York City (combined): approximately 8.875%
NYC Example: Total = $108.88 Pre-Tax = $108.88 ÷ 1.08875 = $100.00 Tax = $108.88 − $100.00 = $8.88
When doing a reverse sales tax calculation NY outside of NYC, check the county rate. For instance, Erie County (Buffalo) has a combined rate of 8%, while Nassau County is 8.625%.
Reverse Tax — Florida
Florida’s statewide sales tax is 6%, with counties adding between 0.5% and 2.5% in discretionary surtax. The reverse sales tax calculator Florida rate therefore ranges from 6% to 8.5% depending on the county.
Example (statewide rate only): Total = $53.00 Pre-Tax = $53.00 ÷ 1.06 = $50.00 Tax = $53.00 − $50.00 = $3.00
Miami-Dade County adds 1%, making the combined rate 7%:
Pre-Tax = $53.50 ÷ 1.07 = $50.00
Reverse Tax — Texas
Texas has a state sales tax rate of 6.25%, and local jurisdictions can add up to 2%, bringing the maximum combined rate to 8.25%. The reverse sales tax calculator Texas rate for most major cities (Dallas, Houston, Austin, San Antonio) is 8.25%.
Example: Total = $108.25 Pre-Tax = $108.25 ÷ 1.0825 = $100.00 Tax = $108.25 − $100.00 = $8.25
Reverse Tax — California
California has the highest state-level sales tax in the US at 7.25%, and combined rates in some cities can reach 10.75%. A reverse sales tax calculator California calculation must always confirm the local rate.
Example (Los Angeles, combined rate ~10.25%): Total = $110.25 Pre-Tax = $110.25 ÷ 1.1025 = $100.00 Tax = $110.25 − $100.00 = $10.25
Reverse Tax — Connecticut (CT)
Connecticut has a flat statewide sales tax of 6.35% with no local additions, making reverse sales tax calculator CT calculations simple and consistent.
Example: Total = $106.35 Pre-Tax = $106.35 ÷ 1.0635 = $100.00 Tax = $106.35 − $100.00 = $6.35
Canada: Reverse Tax by Province
Canada uses a combination of federal GST (Goods and Services Tax) and provincial taxes. Some provinces have harmonized their provincial tax with the federal GST into a single HST (Harmonized Sales Tax), while others collect GST and PST (Provincial Sales Tax) separately. A reverse HST tax calculation works the same as any reverse tax — divide by (1 + combined rate).
Reverse Tax — Ontario
Ontario uses HST at a combined rate of 13% (5% federal GST + 8% provincial component).
Formula: Pre-Tax = Total ÷ 1.13
Example: Total = $226.00 Pre-Tax = $226.00 ÷ 1.13 = $200.00 Tax (HST) = $226.00 − $200.00 = $26.00
The reverse tax calculator Ontario rate of 13% is applied uniformly across the province.
Reverse Tax — Quebec
Quebec has one of the more complex tax structures in Canada, combining federal GST (5%) and Quebec Sales Tax, or QST (9.975%). These are applied separately but can be combined for a reverse calculation.
Combined rate = 5% + 9.975% = 14.975%
Formula: Pre-Tax = Total ÷ 1.14975
Example: Total = $114.98 Pre-Tax = $114.98 ÷ 1.14975 = $100.00 Total Tax = $114.98 − $100.00 = $14.98 (GST portion = $5.00, QST portion = $9.98)
Quebec reverse sales tax calculations are among the most searched in Canada precisely because of this dual-tax structure. Whether you call it a reverse taxes calculator Quebec or a Quebec sales tax reverse, the formula above handles both layers at once.
Reverse Tax — British Columbia (BC)
BC charges 5% GST federally plus 7% PST provincially — a combined 12%.
Formula: Pre-Tax = Total ÷ 1.12
Example: Total = $112.00 Pre-Tax = $112.00 ÷ 1.12 = $100.00 Tax = $112.00 − $100.00 = $12.00
The reverse tax calculator BC rate is 12% for most goods. Note that some items are PST-exempt (basic groceries, prescription drugs), so the effective rate depends on what was purchased.
Reverse Tax — Alberta
Alberta is unique in Canada — it has no provincial sales tax. Only the federal 5% GST applies, making it the lowest-tax province for consumer purchases.
Formula: Pre-Tax = Total ÷ 1.05
Example: Total = $105.00 Pre-Tax = $105.00 ÷ 1.05 = $100.00 Tax = $105.00 − $100.00 = $5.00
The Alberta reverse tax calculation is the simplest among Canadian provinces.
Reverse Tax — Manitoba
Manitoba applies 5% GST plus 7% PST (called Retail Sales Tax or RST), for a combined rate of 12%.
Formula: Pre-Tax = Total ÷ 1.12
The reverse tax calculator Manitoba rate mirrors BC at 12% combined.
Reverse Tax — Canada General (HST Provinces)
Nova Scotia, New Brunswick, Prince Edward Island, and Newfoundland and Labrador all use HST at 15%. The reverse income tax calculator Canada for these provinces uses:
Pre-Tax = Total ÷ 1.15
United Kingdom: Reverse VAT Calculation
The UK uses Value Added Tax (VAT) rather than a point-of-sale sales tax. The standard VAT rate in the UK is 20%, with a reduced rate of 5% applying to certain goods (domestic energy, children’s car seats) and 0% for others (food, books, children’s clothing).
A reverse UK tax calculation to extract VAT from a VAT-inclusive price uses the same formula:
Pre-VAT Price = Total ÷ (1 + VAT Rate)
Standard Rate (20%)
Example: Total = £120.00 Pre-VAT = £120.00 ÷ 1.20 = £100.00 VAT = £120.00 − £100.00 = £20.00
Reduced Rate (5%)
Example: Total = £105.00 Pre-VAT = £105.00 ÷ 1.05 = £100.00 VAT = £105.00 − £100.00 = £5.00
The reverse UK tax calculator is widely used by UK businesses and sole traders who need to record net (ex-VAT) income and expenses separately for their VAT returns. A UK reverse tax calculator is also useful for consumers checking whether a retailer charged the correct VAT rate.
Australia: Reverse GST Calculation
Australia applies a flat 10% GST on most goods and services. The reverse calculation is among the simplest:
Pre-GST Price = Total ÷ 1.10
Example: Total = AUD $110.00 Pre-GST = $110.00 ÷ 1.10 = $100.00 GST = $110.00 − $100.00 = $10.00
The australia reverse tax calculation is straightforward because the rate is uniform and there are no local additions.
Quick Reference Table: Rates by Jurisdiction
| Location | Tax Type | Rate | Formula |
| New Jersey, US | Sales Tax | 6.625% | ÷ 1.06625 |
| New York City, US | Sales Tax | 8.875% | ÷ 1.08875 |
| Florida, US | Sales Tax | 6–8.5% | ÷ 1.06 to 1.085 |
| Texas, US | Sales Tax | 8.25% | ÷ 1.0825 |
| California (LA), US | Sales Tax | 10.25% | ÷ 1.1025 |
| Connecticut, US | Sales Tax | 6.35% | ÷ 1.0635 |
| Ontario, Canada | HST | 13% | ÷ 1.13 |
| Quebec, Canada | GST + QST | 14.975% | ÷ 1.14975 |
| BC, Canada | GST + PST | 12% | ÷ 1.12 |
| Alberta, Canada | GST only | 5% | ÷ 1.05 |
| Manitoba, Canada | GST + RST | 12% | ÷ 1.12 |
| UK | VAT | 20% | ÷ 1.20 |
| Australia | GST | 10% | ÷ 1.10 |
Conclusion
No matter which jurisdiction you are in, the reverse tax calculation follows the same logic: divide the total by (1 + the applicable tax rate). The only thing that changes is the rate itself. Use the table above to find the right rate for your location, apply the formula, and you will always arrive at the correct pre-tax price. For the most accurate results, always verify the current combined rate for your specific city or county, as local rates can change over time.
