Should I prepay fuel for rental vehicles on business trips

15 Jul 2026 · 6 MIN READ

Every company wants its employees to feel comfortable on a work trip, right down to the small details like a smooth and easy rental car pick-up. It’s important that fuel policies cover the specific needs of your business, driver preferences, and find a happy medium between cost and convenience. 

Pre-paying for a tank of gas, allowing travelers to hit the road straight away without worrying about refueling later, or recording expenses, can be a tempting option. But what are the benefits of prepaying for gas when you rent a vehicle? This guide will explore all of the options and help you to decide what will suit your colleagues.

Your options for fuel policies on rental vehicles 

Car rental providers offer an array of choices when it comes to gas, depending on whether you value flexibility or cost. Let’s take a look at the most common options that you’ll encounter as a travel manager.

Should I Prepay Fuel For Rental Vehicles On Business Trips Us Graphic 1Full to full 

The most common fuel policy that you will encounter is known as full to full. Basically, a vehicle is collected with a full tank of gas, and the customer is expected to return it with a full tank.

Be sure to keep your receipt and a photograph of your dashboard gauge, as some policies require proof that the car was fuelled within a certain radius.

Scenario
Pat is visiting several regional branches over a three-day work trip in Pennsylvania, on a route that passes several local gas stations. Their car rental fuel policy is full to full, so they must fill up the tank themselves just before returning the car to the airport.

Full to empty or pre-paid fuel

This is sometimes known as a pre-purchase fuel policy, where you pay for your vehicle to have a full tank of gas on pick-up. The car is then returned with no expectation to refill. 

Scenario
Marco has to catch a 6:00 AM flight back to Atlanta after a week-long business trip, and needs to arrive at the airport well before dawn.His car rental has a full to empty policy, which means he can drive straight to the rental drop-off bay without needing to drive around and find a gas station to fill up on gas in the early hours.

Same to same

This option is a little more specific. The vehicle already has some gas in the tank when you collect it, such as half or a quarter full. You are expected to return the car at exactly the same level. 

Make sure you snap a photo of your fuel gauge on collection so you know the exact level to refuel at.

Scenario
Julia is picking up a car for a single, two-hour inspection at a warehouse located ten miles away from the car rental provider pick-up point. The car has a same to same fuel policy, which was chosen because she only needs to add a small amount of gas to match the quarter-tank level the car had when she picked it up.

Pre-purchase with refund

With a pre-purchase with refund gas option, you pay upfront for a full tank, and you get a refund for the gas that remains in the tank once the car is returned. This option sometimes comes with an additional convenience fee.

Scenario
Vikram is traveling between several client offices and isn't sure exactly how many miles he will cover. His rental car has a pre-purchase with refund fuel policy, so he can return the car and receive money back for any gas he didn't use.

Which fuel policy is best for business trips?

There are several elements to balance when choosing what’s best for your business and your colleagues. You’ll want to consider things such as:

  • How far do your colleagues travel? 

Are you a multi-national company where travelers cover hundreds of miles over a single trip? Or do your colleagues only need a car to travel to the airport and back? 

  • What time of day will travelers need to hire a car?

Are work trips usually within business hours, or will there be some early or late starts?

  • How tight is the work trip schedule?

Is there time to spare, or do your colleagues need to get to their destination for a defined appointment?

  • What’s the location like?

Is it rural with limited refueling options or in a city center?

  • What’s your company culture like?

Do your colleagues appreciate the freedom to choose when it comes to travel options, or do they prefer to have defined limits?

  • Is there a preferred gas supplier?

Do you allow flexibility on where a business traveler would purchase gas, or would you have a preferred outlet?

  • How are mileage expenses managed?

Do you use a corporate travel platform that easily allows colleagues to record expenses?

Fuel policy pros and cons

Once you’ve got an idea of the specific business needs, you can choose a gas policy that satisfies them. Here are some of the advantages and trade-offs for your team.

Fuel option
Pros
Cons
Full to full
You only pay for the gas you actually use and it’s usually the cheapest and most straightforward option. Plus you can refuel at the gas station of your choosing No need for the driver to record the gas level
Drivers have to remember to fill up near the drop‑off point to avoid extra fees
Full to empty
Very convenient for long trips or very early/late returns No need for the driver to record the gas level and potential for the worker not to need to refuel at all
If you don’t use most of the tank of gas, this is a wasted cost
Same to same
Only paying for the gas that you need, convenient for short trips
Requires the driver to record precise fuel consumption Fuel gauges aren’t always precise, so it’s easy to misjudge. If you mistakenly return the car with less gas, you may be charged
Pre‑purchase with refund
Saves time at the end of the trip, so it’s convenient when driving outside of business hours Potential for the driver not to need to refuel at all
Requires the driver to record precise gas consumption for a potential refund There’s sometimes an admin fee, and the refund amount is usually only an estimate

Is prepaid fuel for rental vehicles on a business trip worth it?

Pre-purchase with refund policies score highly for convenience, but if you’re budget-conscious, it may not be the most suitable option, as fees normally apply. The cost of the prepaid gas might also be higher than what’s available at local gas stations.

Best for convenience 

The convenience of being able to collect a car with a full tank and not having to worry about keeping track of how much has been used, or refueling, could mean that pre-paying for gas is worthwhile in circumstances where convenience is a higher priority than savings.

You also have to consider the possibility that if a meeting runs late and your colleague has to rush around to refuel, they could miss their flight. Balanced against the potential cost of a missed flight, it’s definitely a cost-effective option even with the admin fee added.

Pre-purchasing gas is a great option if budgets are not a concern and you want to make sure the business trip is as stress-free as possible, reducing the shadow work of business travel.

Best for budget

Overall, full to full is considered the most budget-friendly fuel policy if that’s the most important consideration. It has the added bonus that you can benefit from using gas loyalty schemes or your preferred supplier.  

Same to same can also be cost-effective, but because this relies on precision, it’s worth considering whether this will cause additional stress for the business traveler. If it’s been a busy trip of meetings and events, the last thing your colleagues will want to worry about is meticulously tracking their fuel gauge. It also relies on gas receipts being retained and returned.

What are the fuel policies for electric rental cars? 

Many businesses have sustainability policies in place regarding business travel. To extend this to car rental, companies can opt for business travelers to use electric cars rather than a conventional vehicle. 

When it comes to fuel policies, EVs are usually offered at a same to same rate, where a driver returns the car at the same level of charge it was collected at. If you return the EV with less charge, you can expect to pay a fee.

It’s important to consider the availability and reliability of nearby electric vehicle charging points if you choose this option. Costs vary too. Apps such as Chargepoint allow you to view a map of charging locations, including live availability status. The time required to charge an EV is also much longer than refuelling a conventional car.

Making business car rental easy

By using Perk to manage work travel, you can choose from our industry-leading car rental inventory, with the option to book long-term rentals and select tax-friendly options. Car rental costs can be added to expenses, which are instantly viewable through the app.

Explore the options to see how Perk can help you book and manage corporate travel all in one place.

Written by

Nick Roberts
Nick Roberts

Growth Marketing Director

Nick Roberts is Growth Marketing Director at Perk, where he brings deep experience from high-growth tech to the world of business travel. With a sharp commercial lens, he’s focused on helping modern companies travel better.
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