Thai utilities are cheap by Western standards until the air conditioning bill arrives. Electricity is the one cost that surprises most new arrivals. Everything else, water, internet, mobile, is low and predictable. This guide covers the real numbers and the landlord markup to watch for before signing a lease.
Monthly utility costs at a glance
Utility | Low usage | Moderate usage | Heavy usage |
|---|---|---|---|
⚡ Electricity (fans only) | 500 to 1,000 baht | — | — |
⚡ Electricity (A/C 8hrs/day) | — | 2,000 to 3,500 baht | — |
⚡ Electricity (A/C all day) | — | — | 4,000 to 6,000 baht |
💧 Water | 50 to 150 baht | 100 to 200 baht | 150 to 300 baht |
🌐 Home internet | 400 to 500 baht | 500 to 700 baht | 600 to 850 baht |
📱 Mobile SIM | 200 to 400 baht | 400 to 600 baht | 600 baht (AIS unlimited) |
🔥 Gas (cooking only) | 100 to 200 baht | 150 to 250 baht | — |
Total | 1,250 to 2,300 baht | 3,150 to 5,250 baht | 5,350 to 8,000 baht |
Electricity
Electricity in Thailand is managed by the Provincial Electricity Authority outside Bangkok and the Metropolitan Electricity Authority in Bangkok. The standard residential rate is approximately 4.22 baht per unit (kWh) for the first 150 units, rising to 5.05 baht per unit beyond that. This sounds cheap until air conditioning enters the calculation.
A single air conditioning unit running 8 hours per day in a studio apartment consumes around 250 to 400 kWh per month. At full Thai electricity rates this adds 1,500 to 2,500 baht to your bill. Two units running most of the day in a one-bedroom apartment during Bangkok's hot season push a monthly bill to 4,000 to 6,000 baht.
The most common landlord arrangement is a markup to 6 to 8 baht per unit rather than passing through the official rate. This is common and usually stated in the lease. Always ask what rate you will be charged and calculate the air conditioning impact before signing, the difference between the official rate and a landlord markup of 8 baht per unit adds 1,000 to 2,000 baht per month on heavy AC use.
Reducing electric bills
Setting the AC to 26 degrees Celsius instead of 23 degrees reduces consumption by 20 to 30 percent with minimal comfort loss in most circumstances. Running AC 16 hours per day during the March to May hot season costs 3,000 to 5,000 baht for a single unit. A ceiling fan used alongside AC at a higher thermostat setting is the most effective cost reduction strategy.
Electric meters are individual to the unit in most condos. If you move between properties frequently, check whether the new property has an existing meter registered to the unit or requires a new application. New applications take 3 to 5 business days and some landlords charge a slightly above-cost electricity rate if they hold the main meter and bill tenants separately.
Water
Water in Thailand is cheap. A single person uses around 5 to 10 cubic metres per month. At 9 to 14 baht per cubic metre for the first tier, monthly water bills run 50 to 150 baht. Many landlords include water in the rent. Even where it is separate, it is never a significant budget line.
Do not drink Thai tap water. Filtered water from the 20-litre refill jugs costs 20 to 40 baht at most convenience stores. Most apartments have a filtered water dispenser in the common area or you can buy a small counter filter unit for 300 to 600 baht.
Home internet
Fibre internet is widely available in Thai cities at reasonable prices. True Move, AIS Fibre, and 3BB are the main providers.
Plan | Speed | Monthly cost |
|---|---|---|
Basic fibre | 100 Mbps | 400 to 500 baht |
Mid-range fibre | 500 Mbps | 600 to 700 baht |
Premium fibre | 1 Gbps | 700 to 850 baht |
Installation fees apply but are sometimes waived on 12-month contracts. Speed in practice usually matches the advertised speed during off-peak hours. During peak evening hours from 6pm to 11pm, performance can drop 20 to 40 percent on congested lines. Fibre coverage is near-universal in Bangkok, Chiang Mai, and Phuket. Island coverage depends on the specific property, always test the connection speed before committing to a long stay.
Mobile phone
Thai SIM cards are cheap. AIS, DTAC, and True Move all offer SIM cards for 50 to 100 baht. A 30-day data package with 20 to 30 GB of 4G data runs 200 to 400 baht. The AIS Unlimited SIM at around 599 baht per month is the best option for heavy data users and works well as a hotspot backup when home internet is unreliable.
5G coverage is expanding in Bangkok and major cities. Outside major urban areas, 4G is the effective maximum. Koh Samui and Koh Lanta have reasonable 4G. Remote island areas have unpredictable connectivity that no SIM plan fully resolves.
Gas
Most Thai apartments and houses use bottled LPG rather than piped gas. A standard 15kg gas canister costs around 400 to 500 baht and lasts one person 2 to 4 months for cooking use only. Many expat apartments have electric cooktops instead, avoiding the canister logistics entirely.
Where to go from here
Utilities are one part of the monthly cost picture. These guides cover the rest.
For the full monthly budget: the cost of living in Thailand guide covers rent, food, transport, and utilities together at three spending levels across every major expat city.
For renting and what to check before signing: the renting in Thailand guide covers landlord electricity markups, what is included in most leases, and how to negotiate utilities into the rental price.
For city-specific costs: the cost of living in Bangkok guide and cost of living in Chiang Mai guide cover utility costs alongside rent and food at neighbourhood level.
