How to Remove Tax from a Price (Step by Step)

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By Bikash Roy

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Bikash Roy

Online Research Specialist · SEO Strategist · Web Developer

Bikash personally verifies every calculator against official standards (WHO, NIH, government data). Online research specialist, SEO strategist, and web developer with 10+ years building accurate digital tools.

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· May 29, 2026 · Updated August 14, 2026

When You Need This

• You have a receipt showing a total that includes tax, and want to know the original price
• You’re reconciling an expense and need the pre-tax amount separately
• You want to verify that the correct tax rate was charged
• You’re doing bookkeeping or VAT reclaim and need to separate the tax component

Step 1 — Find the Tax Rate

Check the receipt. Most receipts show the tax rate or the tax amount separately. If the tax amount is shown:

Tax rate = Tax amount / Pre-tax subtotal × 100

If neither is shown (some simplified receipts or international purchases), find your local combined rate:

• US: check your state + local rate (use the preset dropdown in the calculator)
• UK: standard VAT = 20%
• Australia: GST = 10%
• Canada: GST = 5%, or your province’s HST rate

Step 2 — Apply the Formula

Pre-tax price = Total ÷ (1 + tax rate as decimal)

Convert the percentage to a decimal first: 8% = 0.08, 20% = 0.20.

Example: $54.00 total, 8% tax:

Pre-tax = $54.00 ÷ 1.08 = $50.00
Tax     = $54.00 − $50.00 = $4.00

Step 3 — Verify

Check: Pre-tax × (1 + rate) = Total?

$50.00 × 1.08 = $54.00 ✓

Handling Multiple Items at Different Rates

Some receipts apply different rates to different categories (e.g., food vs. non-food in the UK, or luxury goods at a higher VAT rate). Calculate each item separately:

1. Grocery items at 0% VAT: pre-tax = total (no tax applied)
2. Standard items at 20% VAT: pre-tax = total / 1.20
3. Add all pre-tax amounts together for the invoice total

Use the calculator’s “Add another item” feature for this — each row can have its own rate.

Common Rates Cheat Sheet

For Businesses: Bookkeeping Notes

When entering expenses in accounting software:

• Credit card statement shows the total (tax-inclusive)
• Your ledger entries need the pre-tax amount in the expense account
• The tax portion goes into a VAT Reclaim, GST Input Credit, or Sales Tax Expense account

Always record the pre-tax amount as the expense, not the total. Using the total overstates your deductible expenses by the tax amount.

The Reverse Tax Calculator does each of these steps in one pass and handles multi-item receipts. For the algebra behind the division, see the reverse sales tax formula; if you are doing this across a full set of books, reverse tax for small business bookkeeping covers reconciling a whole period at once.