Check a receipt subtotal
Work backward from the final Saint Louis total when the receipt shows tax but the original subtotal is unclear.
Tax included calculator
Saint Louis Reverse Sales Tax Calculator
For receipts associated with the local taxing jurisdiction, start with Saint Louis's 9.679% reference rate. For the most accurate result, replace it with the exact combined rate shown on the transaction.
Reference location: Missouri local jurisdiction. Confirm current address-level rates with Missouri Department of Revenue.
Calculate in seconds
Enter the total you paid and the tax rate
$
The final price you paid%
Saint Louis, MO combined rateReverse the included tax
Divide the total by 1.09679
The rate was added to the original price. Dividing by the tax multiplier reverses it correctly; subtracting 9.679% from the final total does not.
Saint Louis pre-tax formula= Total paid / 1.09679Included tax = Total paid - Original price
Use the calculator carefully
Three checks before reversing a total in Saint Louis
Local boundaries and product rules can matter more than small differences in the formula, so confirm the input before relying on the result.
Prepare an expense report
Separate the pre-tax business expense from the tax portion without estimating by subtraction.
Review a refund
Compare the returned subtotal and tax with the amount originally paid in Saint Louis.
State and local rate combined
Saint Louis rate breakdown
Saint Louis's reference rate combines a 4.225% state portion with 5.454% in local taxes. City, county, transit, and special-district boundaries can affect the exact local mix.
| Rate component | Reference rate | What it represents |
|---|---|---|
| Missouri state portion | 4.225% | State-level portion used by this city record |
| Local combined portion | 5.454% | City, county, transit, or district taxes combined |
| Saint Louis reference total | 9.679% | Missouri local jurisdiction |
City boundaries and special districts can change the exact rate. Use the transaction rate or verify the address with Missouri Department of Revenue.
Worked with 9.679%
Saint Louis reverse-tax examples
Each amount below is treated as a final price that already includes the 9.679% reference rate. Results are rounded to the nearest cent.
| Total paid | Price before tax | Tax included |
|---|---|---|
| $35.00 | $31.91 | $3.09 |
| $90.00 | $82.06 | $7.94 |
| $200.00 | $182.35 | $17.65 |
| $1000.00 | $911.75 | $88.25 |
Local context
Saint Louis compared with the Missouri average
Saint Louis's 9.679% reference rate is 1.24 percentage points above Missouri's 8.44% average. A statewide average is useful for context, but the transaction location is more useful for checking a receipt.
Saint Louis ranks #1 by combined rate among the 3 supported Missouri city pages.
On a $100 tax-inclusive total$91.18estimated pre-tax price at 9.679%
Questions answered
Saint Louis Sales Tax Questions
What sales tax rate should I use for Saint Louis?
Start with the 9.679% combined reference rate shown here, but use the exact rate on the receipt or the official address lookup whenever it is available.
How do I remove Saint Louis sales tax from a total?
Divide the tax-inclusive total by 1.09679. For example, a total of $109.68 at 9.679% becomes $100.00 before tax.
How is the Saint Louis reference rate built?
It combines a 4.225% state portion with 5.454% in local taxes. The local total may include more than one taxing jurisdiction.
Why might a Saint Louis receipt show a different rate?
The purchase may fall outside city limits, use a different local district, involve an exempt or specially taxed item, or follow delivery and sourcing rules. The receipt and official address lookup are the best checks.
Can I use this Saint Louis calculator for refunds or expenses?
Yes. It can separate a final amount into the estimated pre-tax price and included tax. Keep the original receipt and official rate evidence when documentation is required.
Official rate check
Verify before filing or collecting tax
This page is for receipt checks and estimates. Use the official state authority for current address-level rates, exemptions, sourcing rules, and compliance decisions.
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