Bangkok is one of the cheapest cities for travelers to land in, and also one of the easiest to overspend in once you're there. The baseline costs are remarkably low. The trap is in the tourist infrastructure built around making you pay more than you need to — tuk-tuk rides that cost three times the metered taxi, "closed" temples that redirect you to a tailor's shop, and sky-high hotel breakfast rates that cost five times what the same food costs a block away. This guide is about knowing the real numbers before you arrive.
Sukhumvit (particularly around Nana and Asok BTS stations) is the most convenient mid-range base — direct BTS access, near the airport rail link, and surrounded by good restaurants. Silom is the business district equivalent, slightly quieter. Banglamphu (Khao San Road area) is the traditional backpacker strip — cheap guesthouses for $8–$15/night but loud and aimed entirely at a tourist market.
Budget guesthouses in Banglamphu and Silom run $10–$25 for a private room with air-con. Mid-range hotels near BTS stations cost $45–$90. The jump to $150+ gets you a hotel with a rooftop pool, which in Bangkok's heat is a meaningful upgrade if your budget allows it.
The BTS Skytrain and MRT metro are air-conditioned, cheap, and fast. A single BTS journey costs ฿17–฿59 depending on distance (roughly $0.50–$1.70 USD). A day pass for unlimited BTS travel costs ฿140 ($4 USD) and pays off if you're making three or more journeys. The BTS covers most tourist areas: Chatuchak market, Siam, Sukhumvit, Silom.
For areas the BTS doesn't reach (including Khao San Road, Wat Pho, the Grand Palace), use Grab — Thailand's Uber equivalent. A typical 15-minute Grab ride costs ฿80–฿150 ($2.30–$4.30). Always use Grab or metered taxis rather than tuk-tuks for any journey with a fixed destination — the metered options are cheaper and you won't get taken to a gem shop en route.
Bangkok's street food is genuinely exceptional and costs a fraction of restaurant prices. A bowl of boat noodles costs ฿40–฿60 ($1.10–$1.70). Pad Thai from a wok on the street costs ฿60–฿80. Mango sticky rice is ฿80–฿120. Eating three meals from street stalls or basic shophouse restaurants runs ฿300–฿500 per day ($8.50–$14 USD).
The best street food is not on Khao San Road, where it's marked up significantly. Chinatown (Yaowarat) on evenings is genuinely excellent — the main strip fills with stalls selling crab fried rice, grilled seafood, and dim sum from around 6pm. Or Tor Kor market near Chatuchak is a covered fresh market used by locals, with an excellent cooked-food section. Silom Soi 20 is another reliable street food strip popular with office workers at lunchtime.
The Grand Palace and Wat Phra Kaew (the Temple of the Emerald Buddha) cost ฿500 ($14 USD) for foreigners and is one of the most impressive architectural complexes in Asia — worth paying for once. Wat Pho (the Reclining Buddha) costs ฿200. Wat Arun (Temple of Dawn) costs ฿100 and looks best from the river at sunset.
Many of Bangkok's Buddhist temples are free to enter and less famous but equally interesting. Wat Suthat, Wat Saket (the Golden Mount), and Wat Benchamabophit (the Marble Temple) each charge ฿20–฿50 and attract a fraction of the Grand Palace's crowds.
Bangkok has a small set of well-documented scams that target first-timers specifically. The "friendly stranger" who tells you a temple is closed and redirects you to a tuk-tuk tour — ignore them, the temple is open. The tuk-tuk that offers an impossibly cheap city tour that includes a stop at a tailor or gem shop — the driver gets a commission for delivering you there. The taxi driver who says the meter is "broken" — insist on the meter or take a Grab. None of these are dangerous, just expensive if you don't know about them in advance.