According to customs in the Dominican Republic, it is appropriate to leave a tip of around 10% at restaurants. If you receive outstanding service, a tip of 15-20% is more appropriate. It is important to understand the exchange rate and to tip in pesos rather than in USD. Tipping for a Butler is typically $10-20, bartenders receive $1, and taxi drivers are not usually tipped but $5 is appreciated for exceptional service. At spas, no tip is expected but rounding up to 10-20 pesos is customary. In restaurants, a mandatory 10% tip is added to the final bill, known as the propina legal in Spanish, but this goes to the workers.