Hawaiʻi Home Costs

Hawaiʻi true cost-of-living calculator

See what a month on Oʻahu, Maui, Hawaiʻi Island, or Kauaʻi really costs, using current utility tariffs, USDA food costs, AAA gas prices, and more. Every line is sourced below.

Your household

Rent or own?
Cars

Your estimated monthly cost on Oʻahu

2 people, renting, 1 car

Hawaiʻi total / month
$4,782
$57,384 per year
Same lifestyle, U.S. average
$2,405
99% more in Hawaiʻi
CategoryHawaiʻiU.S. avg
Housing (rent)
Your input		$2,642$873
Electricity (~450 kWh/mo)estimate
Utility tariff, Oct 2026		$223$108
Water + sewerestimate
BWS + City sewer rates		$109$53
Groceriesestimate
USDA Thrifty Food Plan, Hawaiʻi		$778$573
Gasoline (1 car)estimate
AAA Honolulu price		$178$130
Car insuranceestimate
Hawaiʻi full-coverage average		$146$107
Health careestimate
BLS CE × MERIC health index		$443$430
Internet + phoneestimate
BroadbandNow HI avg + phone estimate		$164$131
Shipping / “Hawaiʻi premium” on goodsestimate
Extra cost vs mainland		$99$0
Total$4,782$2,405

The U.S. column divides each Hawaiʻi line by MERIC's Q2 2026 Hawaiʻi index for that category (housing 302.6, utilities 207.3, groceries 135.8, transportation 136.9, health 103.0, misc. 124.5). Taxes, childcare, dining out, and entertainment are not included.

Oʻahu housing at a glance

Honolulu Board of REALTORS, September 2026: median single-family price $1,110,000; median condo price $523,000. Oʻahu's general excise tax is 4.5% general excise tax (4% state + 0.5% county surcharge); businesses may pass on up to ~4.712%, and it shows up in most prices you pay.

Frequently asked questions

How much more expensive is Hawaiʻi than the mainland?

MERIC's Q2 2026 cost-of-living index puts Hawaiʻi at 185.8 (U.S. average = 100), the most expensive state, so overall costs run about 86% above average. Housing drives most of the gap (index 302.6), followed by utilities (207.3), transportation (136.9), and groceries (135.8). Health care is close to the national average (103).

How much is the electric bill on Oʻahu?

For October 2026, Hawaiian Electric's effective Oʻahu residential rate is about 45.8¢–49.5¢ per kWh depending on usage tier, and a household using 500 kWh pays about $246.45 a month. Maui and Hawaiʻi Island rates are similar, and Kauaʻi (KIUC) averaged about 40¢/kWh in August 2026. Rooftop solar, A/C use, and EV charging move your bill the most.

What is the median home price on Oʻahu?

According to the Honolulu Board of REALTORS, the Oʻahu median sales price in September 2026 was $1,110,000 for single-family homes and $523,000 for condos. HUD's FY2026 Fair Market Rent for a 2-bedroom in Honolulu County is $2,642 a month.

How much do groceries cost in Hawaiʻi?

USDA's Thrifty Food Plan, its lowest-cost home-cooking plan, cost $1,556.00 a month for a family of four in Hawaiʻi as of August 2026, priced from Honolulu. MERIC's grocery index for Hawaiʻi is 135.8, about 36% above the U.S. average. Most households spend more than the Thrifty plan.

How much is gas in Hawaiʻi?

On October 14, 2026, AAA's average for regular gas was $5.56/gal in Honolulu, $5.74 in Kahului (Maui), $5.71 in Hilo, and $5.90 in Lihue (Kauaʻi), versus a national average of $4.33.

Is car insurance cheaper in Hawaiʻi?

Usually, yes. Insure.com's 2026 rate survey puts Hawaiʻi's average full-coverage premium at $1,757 a year versus $2,578 nationally, among the lowest in the country. Hawaiʻi also bans insurers from using credit scores to set rates.

Sources & methodology

Data as of . Lines tagged estimate are derived from the sources below; the method appears with each one.

  1. Hawaiian Electric: Effective Rate Summaries, effective Oct 1, 2026 (Oʻahu, Hawaiʻi Island, Maui) (as of 2026-10-01)
  2. Hawaiian Electric: Oʻahu Energy Cost Recovery Factor filing for Oct 2026 (500 kWh typical bill $246.44) (as of 2026-09-28)
  3. KIUC Board of Directors minutes, Aug 27, 2026 (average rate 40¢/kWh in August) + Schedule D residential tariff · related (as of 2026-08-27)
  4. Honolulu Board of Water Supply: Rate Schedule FY2024–FY2029 (as of 2026-07-01)
  5. City & County of Honolulu ENV: Sewer Fee Rates (as of 2026-07-01)
  6. U.S. EPA WaterSense: Statistics and Facts (82 gallons/person/day at home) (as of 2026-10-14)
  7. USDA: Official Thrifty Food Plan Costs, Alaska and Hawaii, August 2026 (as of 2026-08-31)
  8. AAA Gas Prices: Hawaiʻi state and metro averages (as of 2026-10-14)
  9. BLS: Consumer Expenditures in 2024 (report and news release) · related (as of 2025-12-19)
  10. U.S. EIA: Retail prices for regular gasoline, 2024 annual average ($3.304/gal) (as of 2025-01-01)
  11. Insure.com: Most and least expensive states for car insurance (as of 2026-09-25)
  12. City & County of Honolulu DTS: TheBus and Skyline fares starting July 1, 2026 (as of 2026-07-01)
  13. MERIC (C2ER data): Cost of Living Data Series, Q2 2026 (as of 2026-06-30)
  14. BroadbandNow: The Cost of Staying Connected in 2026 (avg plan price by state) (as of 2026-03-25)
  15. Honolulu Board of REALTORS: Oʻahu Monthly Statistical Report, September 2026 (as of 2026-10-06)
  16. HUD Fair Market Rents FY2026 (2-bedroom, by county) (as of 2025-10-01)

How the estimates are made

  • Electricity usage (kWh): Assumed monthly usage, anchored on HECO's 500 kWh 'typical residential customer' benchmark and scaled up or down by household size. Your use depends on A/C, EV charging, water heater, and rooftop solar.
  • Kauaʻi electricity: KIUC reported an average rate of 40¢/kWh for August 2026 (board minutes). Applied as a flat rate plus the Schedule D customer charge ($11.42). Actual residential bills vary by month with fuel costs.
  • Water use: EPA WaterSense: the average American uses about 82 gallons a day at home (82 × 30.4 days ≈ 2,494 gal/month per person).
  • Water/sewer dwelling type: Renters are modeled at multi-unit (condo/apartment) rates and owners at single-family rates. Many Oʻahu rentals and condos include water and sewer in rent or HOA dues.
  • Water/sewer off Oʻahu: Oʻahu rates (Board of Water Supply + City sewer). Used as a proxy for the other islands, which have their own county water departments.
  • Groceries: USDA Thrifty Food Plan cost for Hawaiʻi (Aug 2026, reference family of four) ÷ 4 × household size. The Thrifty plan is USDA's lowest-cost plan (all meals cooked at home), so most households spend more. Statewide figure based on Honolulu prices.
  • Gasoline: BLS CE 2024: avg U.S. household spent $2,411/yr on gasoline with 1.9 vehicles; ÷ EIA 2024 avg regular price $3.304/gal ≈ 384 gal per vehicle per year ≈ 32 gal/month. Island driving is often shorter, so this may run high.
  • Car insurance: Insure.com 2026 average full-coverage premium for Hawaiʻi (40-year-old, clean record). Private rate survey; your quote will vary.
  • Bus pass: No-car households: TheBus adult monthly pass ($90 from July 1, 2026) for up to 2 adults. Neighbor islands have their own county bus systems; the Oʻahu price is used as a placeholder there.
  • Health care: BLS CE 2024 average healthcare spending ($6,197/yr per household of 2.4 people: premiums, medical services, drugs, supplies) per person × MERIC Hawaiʻi health index 103.0. Many Hawaiʻi workers get employer coverage under the Prepaid Health Care Act, so your own out-of-pocket cost may be lower.
  • Phone: BLS CE 2024 cellular phone service ≈ $1,359/yr per household ÷ 2.4 people ÷ 12. National figure, not Hawaiʻi-specific; the $1,359 line item should be re-checked against the BLS detailed table.
  • Shipping premium: Shipped-goods premium. BLS CE 2024 household spending on apparel ($2,001) + household furnishings & equipment ($2,414) + housekeeping supplies ($877) = $5,292/yr, × 24.5% (MERIC Hawaiʻi misc. goods & services index 124.5 vs 100). Scaled by √(household size ÷ 2.4).