Dining Etiquette Utility
Pre vs Post-Tax Tip Calculator
Beat the POS machine "tip inflation". Calculate exactly what you should tip before sales taxes are applied.
The Receipt
$
$
Gratuity
15%
18%
20%
22%
25%
%
Proper Etiquette
Pre-Tax Total
$0.00
Tip: $0.00
POS Machine Logic
Post-Tax Total
$0.00
Tip: $0.00
Bill Grand Total Subtotal + Tax (Before Tip)
$0.00
"Tip Inflation" Cost Extra money paid if tipping post-tax
+$0.00
Split Bill (Pre-Tax Tip)
-
2
+
$0.00
Etiquette Note: According to standard US dining etiquette, a tip should reflect the service provided and is traditionally calculated on the pre-tax subtotal. Modern digital Point-of-Sale (POS) screens frequently present suggested tip buttons (e.g., 20%) calculated on the grand total (including tax and fees), which artificially inflates the actual percentage you are tipping on the service.