# AI advises a traveler to leave an extra 15-20% cash tip on top of the bill at Singapore restaurants and hotels

- **ID:** `culture/no-additional-tip-on-service-charge`
- **Domain:** culture
- **Category:** cultural_norm
- **Verification:** ai_generated
- **Fix Rate:** 85%

## Root Cause

Singapore does not have a tipping culture; most restaurants and hotels already add a mandatory 10% service charge to the bill, with GST (9% in 2026) then calculated on the service-charge-inclusive total - shown on menus as '++' pricing. IRAS confirms F&B and hotel establishments that impose a service charge are specifically exempted from the usual GST-inclusive price display rule, precisely because the '++' add-on is the norm. Tipping on top of that is not expected and, per Visit Singapore-aligned travel guidance, unnecessary.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| any | active | — | — |

## Workarounds

1. **Check whether the bill or menu shows '++' (service charge + GST not yet added) or 'Nett' (all charges already included) before deciding whether to tip further; if a 10% service charge line item already appears on the final bill, no additional tip is expected** (85% success)
2. **At hawker centres, food courts, and taxis - where no service charge applies - tipping is optional and not culturally expected either; round up or leave small change only as a discretionary thank-you** (80% success)

## Dead Ends

- **Tell a traveler to leave a 15-20% cash tip at Singapore restaurants the way they would in the US, on top of whatever is printed on the bill** — IRAS's GST price-display guidance confirms the standard Singapore restaurant/hotel bill already layers a 10% service charge and then GST on top of that combined amount (e.g. $100 food + $10 service charge + $9.90 GST = $119.90 total) - this is the source of the '++' notation seen on menus. A traveler who does not know this will either be confused by '++' pricing or add a further cash tip on a bill that already includes a service charge, which is redundant since the charge is not itself a discretionary gratuity to staff. (60% fail)