Tipping in the United States is an economic anomaly with deep historical roots in both British custom and post-Civil War labor exploitation. The practice arrived from England in the 17th century, where coffeehouses posted boxes labeled 'To Insure Promptness' (supposedly the origin of 'TIP'), though etymologists dispute this backronym. Tipping became entrenched in the U.S. restaurant industry after the Civil War when restaurant owners — particularly those employing newly freed Black workers — adopted European tipping conventions as justification for paying below-poverty wages on the premise that tips would supplement. Federal law still allows a 'tipped minimum wage' of $2.13/hour for tipped workers, though employers must make up the difference if tips don't reach standard minimum wage.

Standard tipping norms have inflated significantly. The customary restaurant tip in the 1970s was 10-15%; it rose to 15-20% through the 1990s-2000s; today 20% is widely considered standard, with 25-30% common at upscale establishments. Tablet-based point-of-sale systems (Square, Toast) have accelerated this through 'tip creep' — default buttons presenting 25%, 30%, and 35% options rather than 15%, 20%, and 25%. Research by Cornell's Center for Hospitality Research found that people tip higher when presented with higher anchoring options, even when aware of the manipulation. The expansion of tip prompts into non-traditional contexts (coffee shops, retail counters, rideshares) has generated significant consumer pushback.

The economic debate over tipping vs. service-included pricing is substantive. Restaurant operators who eliminated tipping (Danny Meyer's 'Hospitality Included' model at Union Square Hospitality Group, briefly adopted 2015-2020) faced both business challenges and staff preferences. Servers at tip-based restaurants often earn $50,000-$80,000+ in major markets — more than many management roles — creating incentive misalignment where eliminating tips means top servers leave. No-tip models that raise menu prices by 20-25% typically attract fewer customers despite lower total spend, because 'price increases' feel different than 'adding a tip.' Behavioral economics explains this as the pain of paying being more acute when prices are higher.

Tipping varies dramatically by country and culture. Japan has a strong no-tipping norm — offering a tip can be considered rude, implying the server can't survive on their salary. Most of Europe includes service charges in the bill and views additional tipping as optional and modest (rounding up, not percentage calculation). Australia and New Zealand have no tipping expectation, with servers earning $20-$25/hour in regulated wages. These different systems reveal that American tipping culture is not a universal economic inevitability but a contingent historical arrangement, maintained partly by inertia and partly by the financial interests of the restaurant industry, which benefits from shifting wage risk from employer to customer.