The complete guide to corporate mileage reimbursement

Corporate mileage reimbursement helps employees recover the cost of using a personal vehicle for work. For employers, a clear approach can support fair employee compensation, consistent expense management, and compliant tax treatment.

This guide explains how mileage reimbursement works, which journeys usually qualify, how to calculate and submit claims, how to build a mileage policy, and how car allowances and electric vehicles fit into the picture.

What is corporate mileage reimbursement?

Mileage reimbursement is a payment an employer makes when an employee uses their own car, van, motorcycle, or bike for eligible business travel.

Rather than asking employees to submit receipts for every gallon of fuel, repair, insurance payment, or maintenance bill, employers commonly reimburse a fixed amount for each business mile or kilometre travelled. The rate is intended to reflect the broader cost of operating a vehicle, not fuel alone.

Depending on the country and the reimbursement arrangement, the payment may cover costs such as:

• Fuel or electricity

• Insurance

• Maintenance and repairs

• Tires and routine servicing

• Vehicle tax, registration, and inspections

• Depreciation and wear and tear

Mileage reimbursement is different from a commuting benefit. The regular journey between an employee’s home and normal workplace generally does not qualify as business mileage.

How does mileage reimbursement work?

The basic calculation is straightforward:

Eligible business miles × approved reimbursement rate = mileage reimbursement

For example, an employee who drives 500 eligible business miles at a rate of $0.67 per mile would submit a claim for $335.

The operational and tax details are more important. A sound mileage programme should define:

1. Which employees and vehicles are eligible

2. What counts as business travel

3. Which mileage rate applies

4. What records employees must submit

5. When claims must be submitted and paid

6. How the business handles tax, payroll, and excess payments

In the United States, reimbursements generally need to be made under an accountable plan to be treated as non-taxable business-expense reimbursements. An accountable plan requires a business connection, adequate substantiation, and the return of any excess reimbursement.

What counts as eligible business mileage?

A journey should have a genuine, primarily business-related purpose. In the US, the IRS describes deductible business expenses as both ordinary—common and accepted in the trade or business—and necessary—helpful and appropriate for the business.

Common examples of eligible mileage include:

• Driving to meet an existing or prospective client

• Travelling between two workplaces or job sites

• Attending an off-site meeting, conference, or training session

• Visiting a supplier, partner, or another company location

• Collecting business supplies or equipment

• Running a business errand

• Visiting a colleague, manager, or executive for work purposes

• Travelling from a regular workplace to a temporary work location

What usually does not qualify?

The following are commonly excluded, although local rules and company policy can vary:

• Normal commuting between home and a regular workplace

• Personal detours during a business trip

• Trips that are primarily personal, even if they include a minor business errand

• Fines and parking tickets

• Mileage for a vehicle that is not eligible under the company policy

For example, if an employee drives 50 miles each way to a conference but normally commutes 10 miles each way to their regular workplace, the policy may require them to exclude the usual 20-mile round-trip commute. In that case, 80 miles would be eligible for reimbursement.

Keep a detailed mileage log

Employees should record mileage at the time of travel, rather than reconstructing it weeks or months later. A complete mileage log supports expense approval and helps the employer substantiate tax treatment.

Each entry should include:

1. Date of travel

2. Starting point and destination

3. Total business miles or kilometres travelled

4. Business purpose of the trip

Odometer readings can provide additional support, especially for employees who travel frequently. Businesses may use a spreadsheet, a mileage-tracking app, or an expense management system, provided the records are accurate and retained in line with applicable tax requirements.

Does an employer have to reimburse mileage?

In many countries, employers are not universally required to reimburse every business mile. However, employers may still have legal obligations to cover necessary business expenses under national, state, provincial, or local law.

In the United States, there is no general federal law requiring employers to reimburse mileage. Employers must ensure that unreimbursed business expenses do not reduce an employee’s pay below the applicable minimum wage. Some states, including California and Massachusetts, have broader employee-expense reimbursement requirements.

Even where reimbursement is not legally mandated, a fair mileage policy can help employers:

• Avoid employees personally subsidizing business activity

• Improve employee retention and satisfaction

• Establish consistent treatment across teams

• Reduce disputes over vehicle costs and travel expenses

• Maintain better expense documentation

Businesses should obtain local legal and tax advice before setting policy requirements across multiple jurisdictions.

How mileage reimbursement rates are calculated

Many employers use a government-approved standard mileage rate. In the US, the IRS sets a standard business mileage rate annually. Other countries use their own tax authority guidance, limits, or approved rates.

These rates are designed to account for the total cost of vehicle ownership and use, including both fixed and variable expenses. They are not simply fuel rates.

A standard rate may reflect:

• Fuel or electricity prices

• Maintenance and repairs

• Insurance

• Licensing and registration costs

• Vehicle depreciation

• Tires and other operating costs

Employers can often set their own reimbursement rate, but paying above an approved tax-free threshold can create taxable income or payroll obligations. Paying below an approved rate may leave employees able to seek tax relief on the difference in some jurisdictions.

Mileage reimbursement rates by country

Mileage rules differ substantially by country, so employers should verify the applicable rate and tax treatment with the relevant revenue authority before each policy year.

United States: IRS standard mileage rate

The IRS publishes a standard business mileage rate each year. It generally applies to eligible business use of a personal vehicle, including conventional, hybrid, and electric vehicles.

The rate changes periodically, so employers should use the current rate published by the IRS standard mileage rate guidance rather than relying on a historical figure.

The IRS also publishes separate rates for certain medical, moving, and charitable journeys. Those rates do not apply to ordinary employer business-mileage programmes.

United Kingdom: HMRC Mileage Allowance Payments

In the UK, Mileage Allowance Payments (MAPs) allow employers to reimburse employees tax-free up to approved amounts when they use their own vehicle for business travel.

For cars and vans, the commonly used HMRC-approved amount is:

• 45p per mile for the first 10,000 business miles in the tax year

• 25p per mile for additional business miles

Employees may also be able to receive an additional 5p per mile for each eligible passenger travelling on the same business journey, where that passenger is also an employee or company officer.

If an employer pays less than the approved amount, an employee may be able to claim Mileage Allowance Relief from HMRC on the difference.

Other European countries

Rates and tax rules vary by country. Some countries use a fixed per-kilometre rate, while others base reimbursement on vehicle type, engine size, distance travelled, fuel type, or local costs.

For example, tax treatment in countries such as France, Ireland, and the Netherlands can depend on the vehicle and the specific reimbursement arrangement. Employers operating internationally should avoid applying one country’s mileage rate to employees in another jurisdiction without reviewing local requirements.

Standard mileage rate vs. actual vehicle expenses

Employers and self-employed individuals may have a choice between a standard mileage method and reimbursement of actual vehicle costs.

Standard mileage method

Under this approach, the employer reimburses a fixed amount for each eligible mile or kilometre. Employees submit their mileage log, and the employer applies the agreed rate.

This method is often easier to administer because employees do not need to provide receipts for fuel, servicing, insurance, and depreciation separately.

Actual-expense method

Under an actual-expense approach, the employee tracks the real costs of owning and operating the vehicle, then calculates the business-use portion of those costs.

Eligible costs may include:

• Fuel or charging costs

• Repairs and maintenance

• Insurance

• Registration and licensing

• Lease payments or depreciation, where permitted

• Tires and servicing

This method can be more precise in some cases, but it requires stronger record-keeping and can be more time-consuming for employees and finance teams.

Fixed and Variable Rate reimbursement (FAVR)

In the US, some employers use a Fixed and Variable Rate reimbursement arrangement, commonly called FAVR.

FAVR separates vehicle costs into:

• A fixed payment for expenses such as insurance, registration, and depreciation

• A variable per-mile payment for costs such as fuel, maintenance, and tires

Because it can account for local vehicle costs, FAVR may be useful for organisations with employees in regions where fuel, insurance, or vehicle costs differ significantly. However, it is more complex to administer than a standard mileage rate and must meet specific IRS requirements to receive favourable tax treatment.

Does mileage reimbursement need to go through payroll?

Mileage reimbursement that is properly substantiated and paid under an accountable plan can generally be handled as a business-expense reimbursement rather than taxable wages in the US.

However, payroll treatment may be required when:

• The employer does not have an accountable plan

• The employee does not provide sufficient mileage records

• The employer pays an amount above the applicable tax-free limit

• The employee does not return an advance or excess reimbursement

The excess amount may need to be treated as taxable compensation. Employers should ensure their payroll, finance, and HR teams agree on the process before launching or changing a mileage programme.

How to create a mileage reimbursement policy

A written policy removes uncertainty, helps employees claim correctly, and creates a consistent approval process. It should also sit alongside the company’s wider corporate travel policy.

1. Define the purpose and scope

Start by explaining who the policy applies to and why it exists. Clarify whether it covers employees, temporary staff, contractors, or other workers.

Define eligible personal vehicles. These may include privately owned or leased cars, vans, motorcycles, and bikes, provided they are registered to or lawfully used by the person making the claim.

Make clear that company cars, hired vehicles, and public transport are covered by separate rules where applicable.

2. Explain eligible and ineligible journeys

List the types of business journeys that qualify, such as client visits, meetings, temporary work locations, and trips to purchase supplies.

Also state that normal commuting does not qualify and explain how to treat mixed personal and business trips. Practical examples are especially helpful because employees often find travel-expense rules easier to apply when they can see a realistic scenario.

3. State the reimbursement rate and method

Your policy should specify:

• The mileage rate or rates used

• Whether rates vary by vehicle type, country, or employee location

• Whether the company uses a standard rate, actual expenses, or FAVR

• How often rates are reviewed

• Whether the company reimburses parking, tolls, congestion charges, charging costs, or other related expenses separately

If you use a government rate, explain that the rate is intended to cover more than fuel. This helps employees understand why they should not normally submit separate claims for standard operating costs that are already included in the mileage payment.

4. Set mileage-log and submission requirements

Tell employees exactly what information to submit, how to submit it, and when. Set a reasonable submission deadline, such as monthly or within a specified period after travel.

A standard mileage claim form or digital expense workflow helps ensure each request includes the date, destination, business purpose, and distance travelled.

5. Clarify approvals and payment timing

Explain who approves claims, when employees can expect payment, and what happens when a claim is incomplete or disputed.

It is also useful to state who employees should contact if they are unsure whether a journey is eligible before travelling.

6. Cover insurance, safety, and compliance

Employees who drive for work should maintain the insurance and licences required in their location. A policy may also require employees to confirm that their vehicle is roadworthy and appropriately insured for business use.

Download Perk’s mileage and car allowance policy template to help create a practical, consistent framework for your organisation.

Car allowance vs. mileage reimbursement

A car allowance and mileage reimbursement are often confused, but they serve different purposes.

A car allowance is a fixed cash payment, usually added to an employee’s salary, to help them buy, lease, and maintain a vehicle. A mileage reimbursement is a payment for the business miles an employee actually drives.

An employer may offer both. For example, an employee might receive a monthly car allowance because their role requires access to a vehicle, then submit mileage claims for eligible work journeys.

What does a car allowance cover?

A car allowance is generally intended to contribute to the costs of owning and operating a vehicle, including:

• Vehicle purchase or lease costs

• Fuel or charging

• Maintenance and repairs

• Tires and general wear and tear

• Insurance

• Registration, inspections, and taxes

• Depreciation

The appropriate allowance depends on factors such as the employee’s role, expected business travel, vehicle requirements, location, and the local cost of fuel, insurance, and repairs.

In the US, monthly car allowances are often cited in the range of $400 to $600, but employers should not treat that range as a universal benchmark. A role requiring frequent regional travel may need a different arrangement from one requiring occasional local client visits.

How to calculate a car allowance

To estimate a realistic allowance, consider the employee’s expected vehicle costs over a year:

1. Estimate fuel or charging costs using a tool such as FuelEconomy.gov.

2. Estimate routine repairs and maintenance using sources such as AAA repair estimates.

3. Obtain insurance estimates based on the employee’s location, vehicle requirements, and business-use needs.

4. Factor in depreciation, registration, inspections, taxes, and other ownership costs.

5. Add the annual costs and divide by 12 to calculate a monthly allowance.

Businesses should document the allowance in the employee’s contract or benefits terms, including the circumstances in which it may change or be withdrawn.

Is a car allowance taxable?

A car allowance is usually treated as taxable income because it is paid as cash compensation rather than as a substantiated reimbursement of specific business expenses.

In the US, employers may be able to reimburse documented business mileage without treating the payment as taxable wages when the arrangement meets accountable-plan requirements. In the UK, the tax treatment depends on the allowance and reimbursement structure, while approved Mileage Allowance Payments can be paid tax-free up to the applicable limits.

Because rules vary, employers should confirm the tax treatment in each jurisdiction where they operate.

Company car vs. car allowance

Employers deciding between a company car and a car allowance should consider cost, administration, tax, employee experience, and control.

Company car

With a company car, the employer owns or leases the vehicle and remains responsible for managing the fleet, maintenance arrangements, insurance, storage, and reassignment when an employee changes role or leaves.

A company car can be easier to standardise across a field team or sales organisation. It can also give the employer more control over branding, safety features, vehicle suitability, and emissions.

Car allowance

With a car allowance, the employee normally owns or leases the vehicle and is responsible for sourcing, maintaining, and storing it. This can reduce fleet administration for the employer and give employees more flexibility.

However, a fixed allowance may not reflect the different travel demands of every employee. It can also mean the employer contributes to costs associated with personal use of the vehicle.

Pros and cons of car allowances

Benefits of a car allowance:

• Relatively simple to set up and administer

• Predictable monthly cost for the business

• Greater vehicle choice for employees

• No need to operate or maintain a company fleet

• Employees can use the vehicle for commuting and personal travel

Potential drawbacks:

• A flat amount may not be equally fair for employees with different travel needs

• The allowance is generally taxable

• Employees may choose vehicles that do not suit business requirements

• The business has less control over vehicle condition, safety features, and branding

• Employees who do not need a vehicle may view the benefit as inequitable

Mileage reimbursement for electric cars

Employees can claim business mileage when using an electric vehicle, provided the journey meets the same eligibility requirements as any other personal vehicle.

Electric personal vehicles

In the US, the IRS standard business mileage rate generally applies regardless of whether the employee drives a petrol, diesel, hybrid, or fully electric vehicle. Employers do not normally need a separate electric-vehicle mileage rate unless they choose to introduce one as part of their own policy.

In the UK, employees using their own electric cars for business travel are generally eligible for the same Mileage Allowance Payments rules that apply to petrol and diesel cars.

Electric company cars

The position can differ when an employee drives a company-owned electric vehicle. In the UK, HMRC publishes an Advisory Electricity Rate for reimbursing electricity used for business travel in a company electric car. This rate is reviewed periodically, so employers should consult current HMRC advisory fuel rate guidance before setting the reimbursement amount.

Should your policy have a separate electric-vehicle rate?

A separate rate may be useful where an employer wants to reflect local charging costs, company sustainability targets, or the use of company-owned electric vehicles. However, a separate policy is not always necessary.

If you introduce different treatment for electric vehicles, clearly explain:

• Which vehicles qualify

• Whether the rate applies to personal or company-owned vehicles

• Whether home charging and public charging are treated differently

• What records employees must keep

• How frequently the rate will be reviewed

Mileage reimbursement for independent contractors

Independent contractors and self-employed people may be able to deduct eligible business vehicle costs, but they generally do not submit mileage reimbursement claims to an employer in the same way as employees.

Eligible trips may include:

• Driving between work sites

• Travelling from a regular place of business to a client location

• Meeting clients or suppliers

• Attending off-site meetings

• Collecting supplies or equipment

• Returning to a regular workplace after an eligible business trip

As with employees, ordinary commuting between home and a regular workplace is typically not deductible.

Self-employed individuals may generally calculate vehicle deductions using a standard mileage rate or an actual-expense method, depending on local tax rules and the method selected for the vehicle. They should maintain detailed mileage records and seek professional tax advice where needed.

Frequently asked questions