Cost to Fill a 20 Lb Propane Tank 2026

The cost to fill a 20 lb propane tank in the United States typically depends on the current propane price per gallon and the tank’s capacity. A standard 20 lb cylinder holds about 4.7 gallons, so the fill price aligns with per-gallon rates. Typical ranges reflect regional pricing and seasonal demand.

Understanding the cost helps buyers compare refill options, cylinder exchanges, and periodic maintenance fees that may apply.

Item	Low	Average	High	Notes
Propane per gallon	$2.25	$2.75	$3.25	Approximate market rates
Tank capacity (gal)	4.7	4.7	4.7	Standard 20 lb cylinder
Fill cost (tank)	$10.60	$12.93	$15.28	4.7 × price/gal
Exchange option	$15	$20	$25	New/recertified cylinder with refill
Delivery fee	$0	$5	$15	Some regions or retailers
Taxes & surcharges	$0	$2	$3	State/local taxes

Assumptions: region, tank release timing, and current fuel prices vary; totals reflect typical consumer options.

Overview Of Costs

When filling a 20 lb tank, buyers should expect total costs roughly in the range of $11 to $25, depending on local rates and service choices. The primary driver is the price of propane per gallon, multiplied by the tank’s usable gallons. Most customers pay at gas stations, propane suppliers, or hardware stores, with some choosing cylinder exchanges that may include a nominal fee or a full refill.

Cost Breakdown

Table below shows how the total is built, including a mix of fixed and variable charges.

Component	Low	Average	High	Notes
Propane	$10.60	$12.93	$15.28	4.7 gal × price/gal
Taxes	$0	$2.00	$3.00	State/local
Delivery/Service	$0	$5.00	$15.00	Optional or regional
Exchange fee (optional)	$15.00	$20.00	$25.00	New/recertified cylinder
Permit/Required inspections	$0	$0	$0	Usually none for refills
Contingency / Misc	$0	$0.50	$2.00	Small variances

What Drives Price

Propane price per gallon is the largest factor in cost, with regional variability and seasonal spikes. Additional price components include whether the tank is a refill or an exchange, and if a delivery or pickup option is chosen. Tank condition and certification can influence service fees, and some retailers apply a small festive or seasonal surcharge during peak demand.

Pricing Variables

Key variables to watch:

• Propane price per gallon: typical US range $2.25–$3.25, varies by supplier and region.
• Tank size and fill level: standard 20 lb cylinder ~4.7 gallons; some shops fill to 80–90% capacity for safety, affecting usable volume.
• Delivery vs pickup: delivery adds a fee in some markets, while pickup incurs no charge in others.
• Exchange vs refill: exchanges can carry higher upfront fees but provide a new or recertified cylinder.
• Taxes and environmental fees: vary by state and locality.

Ways To Save

Customers can save by shopping around and choosing refills over exchanges when possible. Several strategies potentially reduce costs without compromising safety:

• Shop major retailers and local gas stations to compare per-gallon prices.
• Refill instead of exchange if the current cylinder is safe and accepted for refill at the outlet.
• Combine a refill with other purchases to offset delivery charges in some stores.
• Check for loyalty programs or bulk pricing for seasonal outdoor cooking or heating needs.

Regional Price Differences

Prices vary across regions, with noticeable gaps between urban, suburban, and rural areas. In urban centers, propane may be pricier due to higher demand and delivery costs, while rural areas sometimes incur small surcharge for remote service. Suburban pricing generally sits between these two extremes.

Real-World Pricing Scenarios

Three scenario cards illustrate typical charges for common purchase patterns.

Assumptions: region, specs, labor hours.