7% Tax on $120
Tax amount, total price, step-by-step formula, and regional context.
Tax Amount
$8.40
Total Price
$128.40
Effective Rate
6.5421%
$120 × 1.07 = $128.40
Formulas
Add tax (total):
Price × (1 + Rate/100)
Tax amount only:
Price × Rate/100
Remove tax (pre-tax):
Total ÷ (1 + Rate/100)
Effective rate:
(Tax ÷ Total) × 100
Step-by-Step
1
Convert to decimal
7 ÷ 100 = 0.07
2
Calculate tax
$120 × 0.07 = $8.40
3
Add to price
$120 + $8.40 = $128.40
4
Verify (reverse)
$128.40 ÷ 1.07 = $120 ✓
Pre-tax
$120
Tax added
$8.40
Total
$128.40
Eff. rate
6.5421%
Reverse: Remove 7% from $128.40
If you have a tax-inclusive total of $128.40 and need to extract the 7% tax:
$128.40 ÷ 1.07 = $112.15 pre-tax
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Where is 7% used? — US state sales tax
Common base rate in North Carolina and South Carolina.
Real-World Context
A $120 purchase with 7% tax costs $128.4 all-in. The $8.4 is what the retailer collects and remits — it doesn't stay with the seller.
Frequently Asked Questions
How much is 7% tax on $120?
7% tax on $120 is $8.40. Total including tax: $128.40. Formula: $120 × 0.07 = $8.40, then $120 + $8.40 = $128.40.
How do I remove 7% tax from $128.40?
Divide by 1.07: $128.40 ÷ 1.07 = $112.15 pre-tax. Tax component: $16.25.
Why is the effective rate (6.5421%) lower than 7%?
The 7% rate applies to the pre-tax amount ($120). The effective rate — tax as a share of the total ($128.40) — is always lower because the denominator is larger.
Where is 7% tax used?
US state sales tax: Common base rate in North Carolina and South Carolina. Always verify the current rate with your local tax authority.
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