You have the bill in your hand and a tip line to fill in. The subtotal is at the top, tax is added below, and the total is at the bottom. Which number should your tip percentage be based on? It is one of the most common tipping questions, and the honest answer is simpler, and less dramatic, than online arguments suggest.
The short answer
Etiquette guides in the U.S. have traditionally said it is fine to tip on the pre-tax subtotal. The tip is a thank-you for service, and sales tax is a government charge, not part of what the server delivered.
That said, tipping on the after-tax total is also perfectly acceptable and is what many people do because it is the number in front of them. Many card terminals and payment screens calculate suggested tips on the total including tax.
Neither choice is rude. The difference is usually small, as you will see below.
How much difference does it make?
The gap between the two methods equals your tip percentage multiplied by the tax amount. Since tax is a fraction of the bill, the effect on the tip is a fraction of a fraction.
Example: a $60.00 subtotal with an 8% sales tax rate (used here only as a round example; your local rate may differ).
- Tax = $4.80, total = $64.80
- 18% of the subtotal = $10.80
- 18% of the total = $11.66
- Difference = $0.86
| Subtotal | Example tax (8%) | 20% pre-tax tip | 20% post-tax tip | Difference |
|---|---|---|---|---|
| $25.00 | $2.00 | $5.00 | $5.40 | $0.40 |
| $60.00 | $4.80 | $12.00 | $12.96 | $0.96 |
| $120.00 | $9.60 | $24.00 | $25.92 | $1.92 |
| $300.00 | $24.00 | $60.00 | $64.80 | $4.80 |
On everyday bills, the difference is often less than the cost of a coffee. On large group dinners it becomes a few dollars, which is where some people prefer to be precise.
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Open the free tip calculator →When to tip on the pre-tax amount
- You want to follow the traditional etiquette strictly.
- The bill is large and tax is significant.
- You are splitting a bill and want everyone to calculate from the same, cleaner number.
When tipping on the total makes sense
- It is simpler: one number, one calculation.
- The payment screen does it for you and the difference is a few cents.
- You want to round up and be generous; rounding up from the total is easy.
A useful habit is to calculate on the pre-tax subtotal and round up to a convenient number. You get the etiquette-correct base and a generous result, without fuss.
Discounts, coupons and gift cards
Here etiquette guides are more consistent: tip on the original price, before discounts.
If you used a coupon for 50% off or a "buy one, get one" deal, your server still carried, served and cleared the full order. Tipping only on the discounted amount effectively cuts their tip because of a promotion they did not choose.
- Original subtotal: $80.00
- Coupon: −$30.00
- You pay: $50.00 plus tax
- Suggested approach: tip on the $80.00 pre-discount amount
The same logic applies to gift cards, loyalty rewards and comped items. If the restaurant took something off the bill as an apology, many people still tip on the full value as a gesture of goodwill.