A new 5,000 L bunded diesel tank with a pump costs roughly $18,000 to $21,000. Hiring a tank that size is about $500 to $800 a week. When you consider these numbers, the choice looks easy: hiring seems to be the sensible option for short-term projects. However, for most businesses in Australia, the decision is more nuanced.
If the tank will be in use year after year, buying usually works out cheaper. Cost isn’t the whole story, though. Diesel tank hire vs buying also comes down to maintenance, compliance paperwork and whether hiring ties you to one fuel supplier.
If you haven’t worked out what size you need yet, start with how big your on-site diesel tank should be. This guide covers a rough break-even check and the questions to ask a hire company before you sign.
What hiring a diesel tank involves
Hiring a tank is not the same as mobile refuelling services, which some suppliers call wet hire. That’s where a tanker comes to your site and fuels the equipment directly. Here we mean renting the storage tank itself.
Hire from an equipment hire company
You rent the tank, usually for the week or month, and it’ll get delivered to your site. Many are self-bunded, meaning the secondary containment is built in, and some come with a pump or meter. Dry hire means the tank only, so you have to arrange the diesel separately. Delivery and collection costs are often extra charges.
Hire from your fuel supplier
Some fuel suppliers put a tank on your site and keep it filled. In some arrangements the cost of the tank is built into the price of the fuel, so there’s no upfront payment. The trade-off is that now you’re tied to the same supplier for both the tank and the fuel supply.
Hire-to-buy
You might be able to negotiate a deal with a supplier to let you hire first and buy the tank later. If you’re not sure how long you’ll need it, ask whether any hire fees count toward the purchase price.
What buying involves
Buying a diesel tank means that you pay upfront and become the owner. As of October 2026, a new self-bunded 10,000 L tank is listed at roughly $11,000 to $26,500. Prices vary a lot with size, pump, cabinet and finish, and freight, site preparation and dispensing equipment can add to the bill. Some listings also exclude GST, so treat any price as a guide and get a current quote.
The tank itself is only part of what you’re buying. Most sites also need a pump and meter, a lockable cabinet or lid, and a level, stable base to stand it on. Some tanks come with these and others sell them separately, so compare like for like when you look at listings.
As the owner, you also take on maintenance and the paperwork. In return you choose the pump and meter, you can add security, and you get a valuable asset you can use for as long as you need or sell on.
Hire vs buy at a glance
| Hiring | Buying | |
| Upfront cost | Low, though delivery and collection are often extra | High, paid upfront |
| Ongoing cost | Weekly or monthly hire fees | Maintenance, no hire fees |
| Flexibility | Change size or return it when the job ends | Fixed, though you can resell it |
| Setup time | Often quick, delivered ready to use | Depends on stock, freight and site preparation |
| Maintenance | Check who handles it in your hire terms | You |
| Fuel supply | Your choice with dry hire, but a supplier-provided tank may tie you to one supplier | Your choice |
| Best for | Short or uncertain needs | Long-term, permanent use |
How to work out your break-even point
The break-even point is how many weeks of hire it takes to match the price of buying. Past that point, owning would have cost you less.
Say you need a 10,000 L tank for a one-off four-week project. Hiring costs roughly $3,200 to $4,800, while buying starts at around $11,000, so on paper hiring is the obvious choice. But what if the same project comes round every year? Those weeks keep adding up, and after a few years you’d have paid about what the tank costs. Every year after that, owning would have been cheaper.
| Break-even (weeks) = purchase cost ÷ weekly hire cost |
Considering rough estimates available online as of October 2026, we can calculate some break-even points.
| Tank | New purchase | Weekly hire | Break-even |
| 5,000 L | $18,250 to $20,950 (bunded, with pump) | $509 to $800 | about 23 to 41 weeks |
| 10,000 L | $11,250 to $26,480 (self-bunded, varying spec) | $800 to $1,200 | about 9 to 33 weeks |
So we have a rough range of between two and ten months. But purchase prices may leave out freight and a pump, hire rates leave out delivery, and GST treatment differs. Weekly rates are also short-term rates, so a long hire is probably cheaper per week than shown.
If you need the tank for longer than your break-even point, buying is cheaper on cost alone. Flexibility, resale value and maintenance count too, and your accountant can explain how a purchase vs hire is treated for tax. A quote for your own hire length will tell you more than any average.
Hiring a tank doesn’t change the rules for your site
A hired tank still has to sit on a site that meets the storage rules for your location and quantity. Hire companies commonly supply self-bunded tanks built to Australian standards, but it is up to you to make sure your site is compliant. Where you put the tank, how much you store and how far it sits from buildings and boundaries are all part of wider safety standards for bulk fuel storage.
If you are storing more than 1,000 Litres of diesel at any commercial, industrial, or agricultural premises, it is highly recommended to consult a licensed installer or consult your local council.
Questions to ask before you hire
- What’s the minimum hire period, and how is it charged?
- Are delivery, collection and set-up charged separately?
- Is a pump, meter and hose included?
- Who maintains the tank, and who’s responsible for damage?
- Does it come with compliance certification and the required placards?
- Do I have to buy my diesel from you?
- Can the tank be moved while full?
- Is there a hire-to-buy option, and does the hire cost count toward the price?
Which suits which site
Use these as examples to test against your own numbers.
Project site (a few months)
For a short job, hire usually wins by a wide margin, especially with a 5,000 L-class tank. With a 10,000 L tank it’s closer, because a few months of hire can cost nearly as much as the cheapest new tank, so compare before you decide.
For very short jobs there’s a third option as well: mobile refuelling. This way you don’t need a tank at all. On construction sites, fuel storage is temporary, but it needs its own delivery and compliance planning.
Farm with a harvest peak
If the tank is needed every year, buying tends to win within a few seasons. However, if your peak harvest periods are very short and the tank sits idle most of the year, you must confirm whether hiring just for the peak costs less than owning.
Fleet depot
For constant, year-round use like for transport fleets, numbers usually favour buying. A supplier-provided tank can still appeal if you’d rather avoid the upfront outlay, as long as you’re comfortable with the supply arrangement that comes with it.
Small workshop
Small tanks cost much more to hire per litre than large ones. That means the break-even point arrives sooner. If you refuel regularly and have a secure spot for a tank, buying is usually the better fit. Hiring still makes sense if you only need fuel on site for a short stretch, or you’re not sure the workshop will stay where it is.
Whichever route you take, the tank still needs fuel. Once you know your delivery volume and how often you’d like deliveries, get in touch for a bulk fuel quote.
Frequently asked questions
For short jobs, hiring usually costs less. For long or permanent use, buying usually does. On the rates we found, a tank pays for itself within a year or so, but your own quote will decide it.
It varies by provider. Some hire by the day or week, others by the month or longer, and some offer hire-to-buy. Ask about the minimum term and whether longer hire is discounted.
Some tanks are towable and are designed to be moved full, others must be emptied first. Check before you plan a relocation.
It depends on your state, how much diesel you store and your local council. For diesel stored on its own, a site licence is mandatory for diesel storage above 100,000 L in both Victoria and WA. Check the current rules with your regulator and council.
