Guides/Sales tax vs tip percentage
Sales tax vs tip percentage
Sales tax is a government percentage on taxable goods/services. A tip is a discretionary (or auto-added) percentage for service — not a tax.
Bases
- Tax ≈ taxable subtotal × tax rate (set by jurisdiction).
- Tip ≈ tip base × tip% — groups choose pre-tax or post-tax as their rule.
- Neither is “percent off.” Seepercent off vs percent of.
Worked examples
- $80 food, 8% tax, 18% tip on pre-tax: tax $6.40; tip $14.40; total ≈ $100.80.
- Same tip on post-tax: tip base $86.40 → tip ≈ $15.55 — slightly higher.
- Auto-gratuity: may appear near tax lines but is still service-related —gratuity vs tip.
Common mistakes
- Calling tip a tax (or refusing tax thinking it was tip).
- Applying tip% to tax alone instead of the agreed food/drink base.
- Double-counting when auto-gratuity is already printed.
Tools
Tip Calculator·Percentage Calculator·US tip etiquette basics