United States Currency & Money Guide: Exchange, Cards, and Tips

The United States is a credit-card-centric society where the US Dollar (USD) is the only legal tender, and tipping is a deeply ingrained social requirement. To travel smoothly, rely on contactless payments for daily expenses while keeping a small amount of cash for tips, and use a Hello eSIM for the United States to manage your budget and stay connected on the go.

The official currency of the United States is the U.S. Dollar (USD), represented by the symbol '$'. Bills come in denominations of $1, $2 (rare), $5, $10, $20, $50, and $100, while coins include the penny (1¢), nickel (5¢), dime (10¢), and quarter (25¢). For travelers visiting from Singapore, the exchange rate in early 2026 is approximately 1.38 SGD to 1 USD, though this fluctuates daily based on global market conditions.

When exchanging money, avoid airport kiosks which often charge high commissions and offer poor rates. Instead, look for local banks or dedicated currency exchange offices in major city centers. Interestingly, many smaller businesses in the United States are hesitant to accept $50 or $100 bills due to counterfeiting concerns, so it is wise to request $20 bills when withdrawing cash. To keep your finances organized, the Hello app features a multi-currency tracker that automatically converts your spending into your home currency using live exchange rates. This is incredibly helpful for monitoring your budget without having to do mental math at every souvenir shop.

Credit cards are the lifeblood of the American economy, with Visa and Mastercard accepted almost everywhere, from high-end boutiques to rural gas stations. Contactless payment methods, including Apple Pay, Google Pay, and tap-to-pay physical cards, have become the standard at major retailers and public transit systems like New York City’s OMNY or Chicago’s Ventra as of 2026.

While digital wallets are convenient, you should still carry a physical credit card, as many hotels and car rental agencies require a physical card for security deposits. According to the Federal Reserve, over 80% of U.S. consumers used a credit card for at least some purchases in 2024, reflecting the nation's shift away from cash. If you are traveling with a group, the Hello app’s expense splitting feature is a lifesaver; it allows you to log group dinners or shared Uber rides and split the costs instantly. Since the app supports multiple currencies, you can enter the amount in USD and let Hello handle the conversion for your friends back home. To ensure your digital wallet works without a hitch, make sure you have a reliable data connection through a Hello eSIM, which provides instant activation upon arrival.

ATMs are ubiquitous across the United States, found in bank lobbies, grocery stores, pharmacies, and even small bars. However, using an ATM that is not affiliated with your specific bank usually incurs two fees: one from the ATM owner (typically $3.00 to $6.00 in 2026) and another from your home bank for an out-of-network transaction.

To save on fees, look for ATMs at major national banks like Chase, Bank of America, or Wells Fargo, which are generally more secure than the standalone machines found in convenience stores. Some international banks have partnerships that waive these fees, so check with your provider before departing. If you do need cash, try to withdraw larger amounts less frequently to minimize the impact of per-transaction charges. You can easily log these withdrawals in the Hello app using voice expense entry—just speak the amount into your phone, and the AI will categorize the transaction for you. This ensures that even your cash spending is accounted for in your total trip budget, helping you avoid any end-of-trip financial surprises.

Tipping in the United States is not optional; it is a vital part of the service industry where workers often earn a lower base wage in anticipation of gratuities. At sit-down restaurants, a tip of 18% to 22% is standard for good service, while 25% is common for exceptional experiences in major cities like New York or Los Angeles.

When you receive your bill, look closely to see if 'Gratuity' or 'Service Charge' has already been included, which is common for groups of six or more. If it hasn't, you can add the tip directly to the credit card slip before signing. Using the Hello app's AI receipt scanning can help you quickly identify if a service charge was already added, even if the receipt is cluttered with other taxes and fees.

While the U.S. is generally safe for travelers, you should remain vigilant against common financial pitfalls like credit card 'skimming' at outdoor gas pumps or ATMs. Always inspect the card reader for loose parts before inserting your card, or better yet, use contactless 'tap' options which are much harder to compromise. In major tourist hubs, be wary of 'street performers' who offer a 'free' CD or bracelet only to aggressively demand a donation once you've accepted it.

To keep your costs down, remember that the price you see on a tag is rarely the price you pay at the register. Sales tax is added at the point of sale and varies by state (e.g., 0% in Delaware, but over 10% in parts of Chicago). A meal that costs $20 on the menu in 2026 might end up costing $26 after tax and a 20% tip. To save money, consider purchasing a 'CityPASS' for major attractions or visiting grocery stores like Trader Joe’s for affordable snacks. Staying connected with a Hello eSIM also helps you save by allowing you to compare prices online and use navigation apps to find affordable local transport instead of expensive taxis.

Navigating the financial landscape of the U.S. often leads to questions about hidden costs and payment norms. One of the most frequent queries is whether you can get by without any cash at all. While possible in major cities, it is always recommended to carry at least $40-$50 in small bills for tips and emergency situations where card systems might be down.

Do I need to notify my bank before I travel? Yes, most banks require a travel notice to prevent your card from being flagged for suspicious activity when you make your first purchase in the U.S.

Is sales tax refundable for tourists? Unlike Europe, the U.S. does not have a national VAT refund system. Only a few states, like Louisiana and Texas, offer limited sales tax refunds for international shoppers at specific retailers.

How much should I budget for daily meals? In 2026, expect to spend $15-$25 for a casual lunch and $40-$70 for a mid-range dinner per person, including tax and tip. According to the U.S. Travel Association, international travel spending reached over $210 billion in 2024, highlighting the importance of planning your budget ahead of time. Using the Hello app to track these daily costs ensures you stay within your limits while enjoying everything the U.S. has to offer.