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Reverse Sales Tax & VAT Calculator

Calculate original pre-tax net prices and exact tax amounts from tax-inclusive receipt totals and invoice amounts.

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1. Receipt Total & Tax Rate

2. Pre-Tax Price & Tax Paid

Net Price (Before Tax)
$83.33
Exact Tax Amount: $16.67
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How to Use the Reverse Sales Tax & VAT Calculator

  1. 1
    Enter the Gross Total Amount (price paid including tax).
  2. 2
    Enter the Sales Tax or VAT rate (%) applied (e.g. 8.25%, 20%, 5%).
  3. 3
    Instantly view Original Net Price (before tax) and Total Tax Amount Paid.
  4. 4
    Copy clean breakdown for expense reporting and bookkeeping.

Practical Example & Use Case

Common Real-World Scenario

Extracting the pre-tax price ($83.33) and tax paid ($16.67) from a $100 restaurant receipt in a 20% VAT country for business expense reimbursement.

Technical Notes & Limitations

Browser Engine Architecture

Uses exact reverse tax formula: `Net = Gross / (1 + (TaxRate / 100))`.

Frequently Asked Questions

Why is reverse tax different from subtracting the percentage?

Because tax was added to the original net base, subtracting 20% from $100 gives $80, whereas the true net price was $83.33.