How many times have you looked at your credit card bill and were shocked to find you spent way more on your trip than what you anticipated? As you look through the charges, you notice that the small charges for a souvenir here or a cafe visit added up quickly. To add insult to injury, you also realise your dream trip to New York City actually cost several hundred dollars more than you anticipated thanks to the tips you had to give out for every bar drink, restaurant meal and cab ride. While some whimsical travel expenses are hard to anticipate, gratuity is a relatively easy expense to account for when budgeting for travel. In fact, if you don't leave room for it in your budget, you may end up overspending by 10-25%. To help you plan better for the smaller costs of travel, we broke down tipping expectations