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What Is Employee Expense Reimbursement and How Does It Work?

Discover which circumstances employee reimbursement expenses are to be considered taxable income, and learn how to manage business expenses with an accountable plan.

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Jan 23, 20195 minutes

No matter whether a company is big or small, every business incurs costs and expenses that may reduce the business' taxable income. Sometimes, employees — not just employers — the ones who incur business expenses. That’s where expense reimbursement comes in.

Keep in mind that some states, like California and, more recently, Illinois require employers to reimburse employees’ reasonable work-related expenses. Make sure that you understand and follow the applicable laws in the states where you have employees.

Psst.. interested in learning more about creating an accountable expense plan? Download your free copy of Business Expenses: A Beginner's Guide To Building A Plan to find the helpful advice you're looking for.

What Is Expense Reimbursement?

The expense reimbursement process allows employers to pay back employees who have spent their own money for business-related expenses. When employees receive an expense reimbursement, typically they won’t be required to report such payments as wages or income.

These type of reimbursable expenses tend to occur when employees travel for work, but can be associated with other activities related to their employment, including, for example, certain purchases of work-related supplies or tools.

Most businesses reimburse such expenses, but are business expense reimbursements taxable income to the employee?

Page 15 of IRS_ Publication 15, (Circular E), Employer's Tax Guide_, states that expense reimbursements do not have to be included in an employee's wages if the business has an “accountable” plan.

Qualify Employee Expense Reimbursements

In order to have an accountable plan, an expense reimbursement policy or advance payment program must meet the following three conditions:

  1. Business connection: The expense must occur in the performance of services as an employee of the employer.

  2. Substantiation: The employee must substantiate his or her business expenses by providing the employer with evidence of the amount, time, place, and business purpose of the expense. The employee also must submit business expenses within a reasonable period of time after they occurred.

  3. Returning excess amounts: If any amounts the employer pays to the employee exceed the amounts the employee spent, the employee must return excess amounts to the employer within a reasonable period of time.

Business Expenses: A Beginner's Guide To Building A Plan

Why do businesses need an accountable expense plan?

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Know Valid Employee Business Expenses

When an employer reimburses an employee pursuant to an accountable plan, the reimbursement won’t count as wages or income to the employee. Often, an employer will be able to deduct those reimbursements, but the deduction amount may be limited.

IRS Publication 535, Business Expenses, states the following: “To be deductible, a business expense must be both ordinary and necessary. An ordinary expense is one that is common and accepted in your industry. A necessary expense is one that is helpful and appropriate for your trade or business. An expense does not have to be indispensable to be considered necessary.”

What are some examples of ordinary and necessary expenses that would require employer reimbursement? The most common are work-related supplies, travel, meals, and entertainment.


Supplies that an employee purchases for business purposes can be reimbursed at cost, provided that they are reimbursed pursuant to an accountable plan.

The cost of work-related travel is generally a reimbursable expense.


The cost of work-related travel, including transportation, lodging, meals, and entertainment that meet the criteria outlined in IRS Publication 463, Travel, Entertainment, Gift, and Car Expenses are generally reimbursable expenses.

Many employers will reimburse an employee who uses their personal vehicle for business at a standard mileage rate. Generally, this won’t include commuting expenses between an employee’s home and workplace. The standard mileage rate is set by the IRS each year. (The standard federal mileage rate for business in 2019 is 58 cents per mile.)

Meals & Entertainment

Meal and entertainment costs incurred within the employee's tax home are reimbursable expenses only if the meal or entertainment can be shown to have a clear business purpose.

Even though meals and entertainment can only be deducted by the employer at 50% of the cost, the employee should be reimbursed 100% if they are reimbursed pursuant to an accountable plan.

Implement an Accountable Plan

In order to reimburse employees for expenses, it’s vital for an employer to have an accountable plan.

If an employer does not have an accountable plan in place, then IRS Publication 15 states: “Payments to your employee for travel and other necessary expenses of your business under a nonaccountable plan are wages and are treated as supplemental wages and subject to the withholding and payment of income, social security, Medicare, and FUTA taxes.”

Building an expense plan will save employers time, confusion, and stress.

So, even if the expenses are ordinary and necessary, if the employer does not have an accountable plan, then any reimbursements are taxable income. Consider drafting a plan; doing so will likely save everyone time, confusion and stress.

On the other hand, if the employer has an accountable plan, but the employee fails to properly substantiate the expenses within a reasonable time, or the employee fails to return excess advance payments, then any reimbursements could become taxable income.

In addition, if any expenses are paid in excess of IRS limitations, then the excess is taxable income. For example, if an employer reimburses an employee for mileage at more than the standard mileage rate, then the excess is taxable income.

Comply with IRS’ Rules

Employees should only have to pay income taxes on the wages they earn and certain taxable fringe benefits. Expenses incurred by employees in the course of business should be costs incurred by the employer, not by its employees.

If the employer establishes a written accountable plan, and the employees submit properly documented expenses under that plan, then the reimbursements shouldn’t count as taxable income.

However, a key to maintaining any accountable plan is to properly and timely substantiate expenses. Having a business accountant and referring to employment counsel are two ways for businesses to ensure they’re deducting and reporting the right expenses.

This material has been prepared for informational purposes only, and is not intended to provide, and should not be relied on for, legal or tax advice. If you have any legal or tax questions regarding this content or related issues, then you should consult with your professional legal or tax advisor.