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Refill Cost Guide  ·  By Region, Season and Usage

500 Gallon Propane Tank Refill Cost

The 500 gallon propane tank refill cost averages $750 to $1,000 at standard propane prices. The exact 500 gallon propane tank refill cost depends on your region, current propane prices, and whether you use a budget plan or spot pricing. This guide covers everything that affects the 500 gallon propane tank refill cost and how to reduce it.

Avg Refill Cost
$750 to $1,000
Working Fill Volume
400 gallons
Price Per Gallon
$1.50 to $2.50
Annual Fills
1 to 2

Refill Cost by Region

National averages actual prices set by your local supplier
Region
Avg Price Per Gallon
Approx 400 Gal Refill Cost
Midwest
$1.50 to $2.00
$600 to $800
South
$1.60 to $2.20
$640 to $880
Northeast
$2.00 to $2.80
$800 to $1,120
West
$1.80 to $2.50
$720 to $1,000
Mountain / Rural
$2.00 to $3.00
$800 to $1,200

Why the 500 Gallon Propane Tank Refill Cost Varies

The refill cost is not set by the tank supplier it is set entirely by your local propane delivery company. Propane is a commodity priced in real time like gasoline. The price per gallon fluctuates with crude oil markets, seasonal demand, and local competition between suppliers.

Winter months typically see the highest 500 gallon propane tank refill cost because demand spikes as heating season peaks. Summer fills are often the cheapest. Many suppliers offer budget billing programs that average your annual cost into equal monthly payments, which helps avoid large winter refill bills.

How Much Does a Full 500 Gallon Tank Hold?

A 500 gallon tank is filled to 80% capacity per NFPA 58 regulations. That means a full fill is 400 gallons, not 500. This is an ASME Section VIII certified tank requirement. The 80% rule allows for propane expansion as temperature rises. At $2.00 per gallon the 500 gallon propane tank refill cost for a full 400 gallon fill is $800.

Ways to Reduce Your Refill Cost

The most effective way to reduce the 500 gallon propane tank refill cost is to fill in summer when demand is low and prices typically drop. Lock-in pricing contracts from local suppliers can also protect against winter price spikes. Owning your tank rather than renting gives you the freedom to shop multiple suppliers for the best per-gallon rate. View 500 gallon tank purchase prices.

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Season
Winter fills cost more due to peak demand. Fill in late spring or summer to get the lowest per-gallon rate. Some suppliers offer pre-buy contracts in summer at locked prices.
Region
Rural and mountain regions typically pay more per gallon due to longer delivery distances. Northeast prices tend to be highest. Midwest prices tend to be lowest.
Supplier Competition
Areas with multiple propane suppliers have lower prices due to competition. Get quotes from at least two local suppliers before committing to a delivery contract.
Tank Ownership vs Rental
Owning your tank lets you switch suppliers freely. Rented tanks typically lock you into the landlord supplier’s pricing. Tank ownership pays for itself within a few years of lower fill prices.
Fill Level
Some suppliers charge a delivery fee per visit regardless of volume. Letting the tank get low before filling means paying delivery charges more often. Topping up in summer avoids this.
Crude Oil Market
Propane is a byproduct of natural gas processing and crude oil refining. Prices move with the broader energy market. High crude oil prices mean higher refill costs.

500 Gallon Propane Tank Refill Cost FAQ

Common questions about refill pricing
What is the average 500 gallon propane tank refill cost?

The average 500 gallon propane tank refill cost is $750 to $1,000 at national average propane prices of $1.50 to $2.50 per gallon for a 400 gallon fill. The exact cost depends on your region, your supplier, and current market prices. Rural and Northeast locations typically pay more. Midwest locations typically pay less.

How often do you need to refill a 500 gallon propane tank?

Most residential properties refill once or twice per year depending on usage. A home using propane for heating only typically needs one refill per heating season. A home using propane for heating, hot water, cooking, and a generator may need two fills per year. The 400 gallon working capacity of a 500 gallon tank is sufficient for most residential properties through a full winter in moderate climates.

Does the 500 gallon propane tank refill cost include delivery?

Delivery charges vary by supplier. Some suppliers include delivery in the per-gallon price. Others charge a separate delivery fee per visit. Ask your supplier how delivery is priced before committing to a contract. Owning your tank lets you shop multiple suppliers for the best all-in rate.

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