Tractor Supply propane cost varies by store, local propane prices, and whether a customer refills a cylinder or exchanges it. A typical 20-pound tank refill runs about $16-$25, while a filled-tank exchange commonly costs $20-$30; tank condition, taxes, and local availability can change the total.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| 20-pound tank refill | $16 | $20 | $25 | About 4.7 gallons at roughly $3.40-$5.30 per gallon |
| 20-pound tank exchange | $20 | $25 | $30 | Price for a filled replacement tank; local offers vary |
| 30-pound tank refill | $24 | $31 | $40 | About 7.1 gallons when nearly empty |
| New empty 20-pound cylinder | $40 | $55 | $75 | Tank purchase is separate from propane |
Estimates reflect common U.S. retail ranges, not a guaranteed Tractor Supply quote. Call the individual store to confirm service, current rates, and tank requirements.
What a 20-pound Tractor Supply refill usually costs
For a standard 20-pound grill cylinder, a refill typically costs $16-$25 before any applicable tax. A tank filled from empty holds about 4.7 gallons at the usual 80% fill limit, so an example rate of $4.25 per gallon produces a propane charge near $20. A cylinder that still contains fuel costs less because the customer pays for the gallons added, rather than a flat full-tank amount.
That is different from exchanging a cylinder. An exchange generally has a fixed price for a filled tank, often $20-$30, and the customer gives up the existing cylinder. Refilling can be less expensive when the tank is in good condition and has little fuel left; exchange can be convenient when a refill station is unavailable or the old tank is not accepted.
For a typical 20-pound cylinder, budgeting about $20 for a refill or $25 for an exchange is a reasonable starting point. Rates vary by location and date, and not every Tractor Supply store offers propane filling. Assumptions: standard 20-pound cylinder, ordinary access, and a typical retail propane rate.
How gallons, service charges, and tank purchase shape the bill
Propane refills are generally priced by the gallon, while exchanges are usually priced per cylinder. A receipt may also include tax or a separate charge, depending on the location and service. A new cylinder is a separate purchase: buying one empty can add roughly $40-$75, and a prefilled package may cost more than the tank alone.
| Quote component | Typical range | How it affects the total | Pricing basis |
|---|---|---|---|
| Propane refill | $3.40-$5.30 | Cost depends on gallons dispensed | Per gallon |
| 20-pound exchange | $20-$30 | Fixed charge for a filled replacement cylinder | Per exchange |
| Empty 20-pound cylinder | $40-$75 | One-time tank purchase if needed | Per tank |
| Tax or local fee | $0-$3 | May be added according to local rules and store pricing | Per transaction |
| Regulator or hose replacement | $15-$60 | Applies only if grill equipment needs replacement | Per part |
Ask whether the posted refill rate includes all charges and whether the store bills by actual gallons. The price per gallon may not reveal the final cost if the tank has fuel remaining, the customer needs a replacement cylinder, or the store only provides exchange service.
Compare the total bill, not just the advertised per-gallon rate. A refill at $4.50 per gallon costs about $21.15 for 4.7 gallons, before tax; a tank that takes only 3 gallons would cost about $13.50 at the same rate.
Why tank capacity and propane rate change refill prices
Tank size is the clearest cost driver. A 20-pound cylinder holds about 4.7 gallons at the standard maximum fill, a 30-pound cylinder about 7.1 gallons, and a 40-pound cylinder about 9.4 gallons. At $4.25 per gallon, a nearly empty 30-pound tank would cost around $30, while a nearly empty 40-pound tank would cost about $40. These estimates assume the cylinder can safely be filled to its permitted level.
Local propane pricing also changes the total. A difference of $1 per gallon changes the cost of a full 20-pound refill by about $4.70. Retail rates can reflect regional wholesale prices, transport distance, demand, and the store’s pricing policy. A summer grill refill and a winter refill in a high-demand area may not have the same rate.
Tank condition can affect whether filling is possible. Cylinders with expired qualification dates, damaged collars, leaks, or other safety issues may be refused. A typical 20-pound cylinder is subject to periodic requalification rules; the date stamped on its collar helps determine whether it can be filled. A refusal could mean arranging inspection or replacing the tank, rather than paying only for propane.
Capacity, price per gallon, and cylinder eligibility all matter more than the tank’s “pound” label alone. Before making a trip with a larger cylinder, confirm that the store fills that size and ask about any inspection or acceptance limits.
How long a cylinder refill takes and what can add charges
A straightforward refill commonly takes about 5-15 minutes once an attendant is available. Waiting time depends on staffing, customer volume, and whether the propane service is operating when the customer arrives. Some stores require an employee to handle the cylinder outside, so a self-service fuel-pump visit may not be enough to complete the transaction.
There is not usually a separate delivery charge for a customer bringing a portable cylinder to the store. The main potential extras are tax, a tank purchase, replacement fittings, or a separate exchange charge. If a cylinder fails a safety check, the store may decline to fill it; the customer should ask about the reason and alternatives before purchasing a replacement.
Large cylinders, permanently installed tanks, and residential propane deliveries are not the same service as a portable-cylinder refill. Delivery providers may charge for a minimum delivery, fuel, or service visit, and those charges should not be added to a simple Tractor Supply cylinder estimate unless the store confirms that it offers the service.
Confirm store hours for propane service, not just general store hours. A quick call can establish whether filling is available, whether the attendant is on duty, and whether the tank size is accepted.
When a refill beats exchanging a 20-pound cylinder
Refilling often provides better value when the cylinder is refillable, in date, and nearly empty. At a rate of $4.25 per gallon, filling 4.7 gallons costs about $20, which can be several dollars below a $25 exchange. Refilling also keeps the customer’s own cylinder rather than requiring a swap for a different tank.
An exchange can make sense when the existing tank is empty and the price is competitive, when a filling station is unavailable, or when the customer wants to replace a cylinder that a refill station will not accept. The exchange price includes a filled tank, but the customer may receive a cylinder with less than a full 20 pounds of propane; exchange cylinders are commonly filled to about 15 pounds. Check the label and compare the amount of propane, not just the container’s nominal capacity.
| Option | Typical charge | What the customer gets | Best price check |
|---|---|---|---|
| Refill | $16-$25 for near-empty 20-pound tank | Existing cylinder filled by measured gallons | Rate per gallon and amount dispensed |
| Exchange | $20-$30 per filled cylinder | Replacement cylinder, often with about 15 pounds of propane | Price per pound of propane received |
| Buy a new empty cylinder | $40-$75, plus propane | New tank that must then be filled | Combined tank and initial-fill total |
For a sound, nearly empty tank, compare the refill total with the exchange price and actual propane quantity. If the tank is partly full, a refill may be substantially cheaper because the customer pays only for the fuel added.
How local market prices move the Tractor Supply quote
Store prices are not a single nationwide rate. Rural locations may face higher delivery costs, while competition and local supply can influence prices in suburban or urban markets. As a practical planning allowance, a local quote may land 5%-20% above or below a broad national estimate, though the difference can be larger during supply disruptions or seasonal demand spikes.
Regional weather matters because heating demand competes with other propane uses. In colder areas, late fall and winter can bring tighter supply and higher delivered-propane prices; warm-weather areas may see more activity around grilling and recreational use. A retail cylinder refill does not necessarily move in lockstep with residential bulk prices, so a regional average is only a budgeting reference.
For a useful comparison, call two nearby retailers on the same day and ask for the refill rate per gallon, exchange price, and service availability. If a location gives only an exchange price, ask how much propane is in the replacement cylinder. Also confirm whether tax is included so the quotes are comparable.
A local phone quote is more reliable than applying a statewide or national average to a specific store. A few dollars of difference can change which option is cheapest for a single tank.
Three realistic cylinder quotes for common uses
A grill owner with a nearly empty 20-pound tank might pay $19-$23 for a refill at $4.00-$4.90 per gallon, assuming 4.7 gallons are needed. If the tank has roughly 1 gallon remaining, the bill could instead be around $15-$19 because only about 3.7 gallons are added. Taxes or a local fee could add a small amount.
A camper using a 30-pound cylinder could budget $28-$36 for a near-empty refill at $3.95-$5.05 per gallon, based on approximately 7.1 gallons. The final cost would be lower if the cylinder were not empty. The owner should confirm that the store fills 30-pound tanks before driving there.
A customer with an expired or damaged 20-pound cylinder may be unable to refill it. If an exchange is accepted, the immediate cost might be $20-$30 for a filled replacement. If the customer needs to own a new cylinder instead, an empty tank could cost $40-$75, with an additional $16-$25 or more for its first refill.
| Scenario | Estimated propane or tank charge | Assumption |
|---|---|---|
| 20-pound grill refill | $19-$23 | 4.7 gallons at $4.00-$4.90 per gallon |
| 30-pound camper refill | $28-$36 | 7.1 gallons at $3.95-$5.05 per gallon |
| Replacement by exchange | $20-$30 | One filled 20-pound cylinder; local exchange terms apply |
These examples separate propane charges from tank purchases so the budget does not confuse a refill with buying a cylinder. Actual costs depend on local rates, remaining fuel, taxes, and whether the store performs the requested service.
Ways to lower the refill bill without changing equipment
Call ahead and compare the refill price per gallon with the exchange price before leaving home. A nearly empty tank is the fairest comparison; with fuel remaining, a measured refill can cost less than swapping for a filled cylinder. For an exchange, check the stated propane weight, since the nominal 20-pound tank size does not always mean it contains 20 pounds of fuel.
Keep the cylinder’s date and condition in view. Protecting it from corrosion and avoiding damaged valves can reduce the chance that a retailer refuses service. Do not attempt repairs or filling yourself; propane cylinders require appropriate equipment and safe handling. If the tank is not eligible, compare replacement and exchange costs rather than paying for a refill that cannot be completed.
Plan routine grill refills before a holiday weekend or an urgent trip, when staffing and service availability may be limited. If several household cylinders need service, ask whether the location accepts each size and whether its pricing changes by cylinder. Avoid buying accessories or a new tank unless the existing equipment is unusable or incompatible.
The most controllable savings come from choosing refill versus exchange based on the tank’s condition, remaining fuel, and actual local quote. Record the price per gallon and date for future comparisons, because propane rates can change.
Questions to ask before driving to a Tractor Supply store
Not every Tractor Supply location offers cylinder refills, and service details can differ even between nearby stores. Ask whether the specific store fills portable propane tanks or only offers exchanges, what sizes it accepts, and whether service is available at the planned arrival time. These checks prevent a wasted trip with a cylinder the store cannot handle.
Ask for the current refill price per gallon and whether there is a minimum charge, tax, or other fee. For an exchange, confirm the total price and approximate propane weight in the replacement tank. If the existing cylinder is older, ask what condition or date requirements apply; staff may need to inspect it before deciding whether it can be filled.
Residential propane delivery, permanently installed tanks, and portable-cylinder refills can involve different suppliers, fees, and regulations. A store’s portable-tank service should not be assumed to include delivery or service for a home heating tank. Those jobs require a separate quote from a qualified provider.
Get a store-specific quote for the exact cylinder and service before budgeting around an advertised average. A short call can confirm availability, total price, and whether a refill, exchange, or new tank is the practical option.