Cost to Fill a 120 Gallon Propane Tank: Price Ranges and Budget Factors 2026
The cost to fill a 120 gallon propane tank varies with current propane prices, delivery fees, and regional charges. This article presents typical ranges in USD, with per-gallon and total estimates to help buyers budget accurately for a propane fill.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Propane price per gallon | $2.50 | $3.00 | $4.00 | Regional and market fluctuations |
| Delivery/Service fee | $0 | $25 | $60 | May apply on first fill or residential deliveries |
| Taxes/fees | $0 | $15 | $25 | State/local charges |
| Total fill cost (120 gal) | $300 | $360 | $480 | Based on 120 gal tank, varies by region |
Propane Fill Cost for a 120 Gallon Tank
Typical total cost ranges from about $300 to $480, depending on the current propane price per gallon and any delivery charges. A mid-point cadence often lands near $360-$380 for standard residential fills. Assumptions: a full 120 gallon tank capacity, standard residential delivery, Midwest to South region alignment, and standard consumer-grade propane quality.
Assumptions: Midwest labor rates, standard cylinders, normal access, and a full refill during regular business hours.
Major Cost Components in a 120 Gallon Tank Fill
Most of the price comes from the propane itself plus a delivery fee. The quote typically breaks into four to six parts, with propane and delivery dominating the bill. A compact view helps compare quotes quickly.
| Cost Component | Low | Average | High | Notes |
|---|---|---|---|---|
| Propane | $2.50/gal | $3.00/gal | $4.00/gal | Total depends on gallons dispensed |
| Delivery/Service | $0 | $25 | $60 | Flat or variable by distance |
| Taxes/Fees | $0 | $15 | $25 | Sales or environmental charges |
| Labor (if applicable) | $0 | $0 | $0 | Most fills include service without separate labor |
| Subtotal | $2.50×120=$300 | $3.00×120=$360 | $4.00×120=$480 | Propane total with fixed charges |
What Variables Most Change the Price
Two key drivers reliably shift the final quote: regional propane price per gallon and delivery distance. A regional delta of 20% or more between Northeast and Southeast pricing is common during peak demand. Another driver is access constraints: a blocked driveway or narrow entry can incur a surcharge or require an extra trip, altering the delivery fee.
Assumptions: standard tank access, single delivery, no container modifications.
Ways to Reduce the Fill Price for a 120 Gallon Tank
Price can be controlled by scope and timing without compromising safety. Consider scheduling during off-peak hours, consolidating deliveries, or opting for a price plan with fixed per-gallon rates. Keep the tank in good condition to avoid extra service charges for tests or refills after improper seals.
- Lock in a fixed-rate per gallon if available.
- Bundle deliveries with other propane needs to reduce per-delivery fees.
- Choose a nearby supplier to minimize travel costs.
- Use a properly serviced tank to prevent extra charges for seals or tests.
Assumptions: single tank footprint, standard valve health, no emergency delivery.
Regional Price Differences in Propane Refills Across the U.S.
Costs trend higher in coastal regions and seasonal peaks can push per-gallon prices up. In the Rocky Mountain region, lower transport costs may yield a modest discount, while urban coastal areas can see higher delivery surcharges. Expect regional spreads of roughly 0.50–1.50 USD per gallon on typical fills.
Assumptions: standard 120 gallon fill with residential delivery, no bulk contract.
Per-Gallon Pricing Details and Assumptions
Prices per gallon commonly range from $2.50 to $4.00, with variations by supplier, volume, and the season. The table shows how a 120 gallon fill translates to total costs at different per-gallon rates.
| Price per Gallon | Gallons | Total | Notes |
|---|---|---|---|
| $2.50 | 120 | $300 | Low price scenario |
| $3.00 | 120 | $360 | Average price scenario |
| $4.00 | 120 | $480 | High price scenario |