What an expense account is and how it works

An expense account is money your employer gives you to spend on work-related costs, then you submit receipts to get reimbursed or to show the money was spent correctly. The employer either gives you cash upfront (called an advance), or you pay out of pocket and submit receipts later for reimbursement. Either way, you are not keeping the money — it is meant to cover actual business expenses.

The most common setup is that you spend your own money on things like travel, meals with clients, office supplies, or conference fees, then you turn in receipts and get paid back. Some employers give you a corporate card instead, which they pay directly, so you do not handle the money at all. Others give you a per diem — a flat daily amount for meals and incidentals when you travel — and you do not need receipts for that.

The key difference from a regular paycheck is that expense reimbursement is not taxable income to you, as long as you follow your employer's rules and submit proof. If you cannot show a receipt or if the expense does not fit the company policy, you may have to pay tax on it or cover the cost yourself.

Key Takeaways

  • An expense account covers work costs you pay for yourself or that your employer funds in advance, and you must show receipts to get reimbursed.
  • Reimbursement timelines vary by employer — some pay within one pay period, others take two to four weeks after you submit your report.
  • You need to keep receipts and follow your company's policy on what counts as a business expense, or you may owe taxes on the money.
  • If your employer does not reimburse you or disputes a claim, you may be able to deduct unreimbursed work expenses on your tax return, but rules are strict.
  • Corporate cards and per diems are alternatives to traditional reimbursement and have different tracking and tax rules.

How to submit an expense report and get reimbursed

The process usually starts with your company's expense management system — this might be software like Concur, Expensify, or a simple spreadsheet your HR department provides. You log in, create a new report, and enter each expense with the date, amount, category (meals, travel, supplies), and business purpose. Then you attach photos or scans of your receipts.

After you submit, the report goes to your manager for approval. They check that the expenses fit company policy and that the business purpose makes sense. Once approved, it moves to accounting or finance, who process the reimbursement. The whole cycle usually takes one to four weeks, depending on how often your company runs payroll and how quickly each step moves.

Reimbursement typically lands in your bank account as a separate check or direct deposit, or it gets added to your next paycheck. Check your company's policy or ask your HR department which method they use and how long to expect. Some employers reimburse within one pay period; others batch reports and process them monthly.

What counts as a business expense and what does not

Your company policy spells out what you can claim. Common categories include airfare and hotels for work travel, meals during business trips or client meetings, rental cars, parking, conference registration fees, and office supplies you buy for work. Some companies also cover professional development like training courses or certifications related to your job.

What does not count varies by employer, but generally excludes personal grooming, entertainment that is not business-related, alcohol beyond a meal, commuting to your regular office, and anything for personal use. Meals are often limited to a per-meal cap — for example, $15 for lunch or $25 for dinner — and some companies do not reimburse meals unless you are traveling or meeting a client.

If you are unsure whether something qualifies, ask your manager or HR before you spend the money. Submitting a claim for something outside policy wastes time and may get rejected, or worse, you could end up owing taxes on it if your employer counts it as taxable income.

Keeping receipts and documentation

You need a receipt for nearly every expense — a credit card statement alone is not enough. The receipt should show the date, what you bought, how much you paid, and the vendor name. For meals, write on the receipt or in your report who you met with and what you discussed, because the IRS requires a business purpose, not just a dollar amount.

Keep receipts for at least three to seven years, depending on your company's policy and tax law. Take photos or scan them as you go, rather than waiting until the end of the month. If you lose a receipt, some companies will let you file an affidavit swearing you made the expense, but this is harder to get approved and may be denied outright.

Store receipts in a folder — physical or digital — organized by date or category. When you submit your report, attach them in the order they appear in your report. This makes the approval process faster and shows you are organized, which helps if there is ever a question about your spending.

What happens if your reimbursement is late or denied

If your report is approved but the money does not arrive when expected, follow up with accounting. Ask for a status update and when you can expect payment. Most delays are simple — a report got lost in the queue, or payroll processing took longer than usual. A polite email usually gets a quick answer.

If a claim is denied, your manager or the approver will usually tell you why — the expense does not fit policy, the receipt is missing, or the amount exceeds the limit. You can ask for clarification and resubmit if you think there was a mistake, or you can accept the denial. If the expense was truly for work and your employer will not reimburse it, you may be able to deduct it on your tax return, but the rules are strict and the deduction is only available to certain workers.

If your employer consistently refuses to reimburse legitimate work expenses, that is a conversation to have with HR or your manager. You should not be out of pocket for required job costs.

Expense accounts and your taxes

Reimbursement for business expenses is not taxable income — your employer does not report it on your W-2, and you do not owe tax on it. This is true as long as you follow the accountable plan rules: you submit receipts, the expenses are for business purposes, and you return any excess money to your employer.

If your employer does not require receipts or does not have a formal reimbursement policy, the money may be taxable to you. Similarly, if you receive an advance and do not spend it all, you have to return the overage or it becomes taxable income.

If your employer will not reimburse a work expense you paid for, you generally cannot deduct it on your personal tax return unless you are self-employed or a statutory employee. W-2 employees have very limited options for unreimbursed work expenses. Talk to a tax professional if you have significant out-of-pocket work costs.

Corporate cards and per diems as alternatives

Some employers issue a corporate credit card instead of reimbursing you. You use the card for work expenses, the company pays the bill directly, and you do not handle the money. You still need to categorize each charge and provide business purpose notes, but there is no reimbursement wait. The downside is that you have less control over the card and may have spending limits.

A per diem is a flat daily allowance for meals and incidentals when you travel. You do not need receipts — you just get the amount and keep it, as long as you are traveling. The IRS sets standard per diem rates by location, and if your employer pays at or below that rate, it is not taxable to you. If they pay more, the excess is taxable income.

Per diems are simpler than tracking every meal receipt, but they do not work well if your actual costs are much higher or lower than the allowance. Corporate cards and per diems both reduce paperwork and speed up the process compared to traditional reimbursement.

Frequently Asked Questions

How long does it usually take to get reimbursed after I submit my expense report?

Most companies reimburse within one to four weeks. If your company processes payroll weekly, you might see the money in your next paycheck. If they batch expense reports monthly, it could take longer. Ask your HR or accounting department for their typical timeline so you know what to expect.

What if I do not have a receipt for a work expense?

Most companies require a receipt. If you lost it, ask your manager or HR whether they will accept an affidavit or a written explanation. Some will, some will not. Going forward, take photos of receipts as you go so you do not lose them.

Can I claim a work expense on my taxes if my employer will not reimburse it?

W-2 employees generally cannot deduct unreimbursed work expenses on their personal tax return. Self-employed people and certain statutory employees can. If you have significant out-of-pocket work costs, talk to a tax professional about your specific situation.

Is reimbursement money considered income and taxable?

No, as long as your employer has an accountable plan — meaning you submit receipts, the expenses are for business, and you return any overage. If your employer does not require receipts or you keep money you did not spend, it becomes taxable income.

What is the difference between a per diem and a reimbursement?

A per diem is a flat daily allowance you receive without needing receipts, usually for travel meals and incidentals. Reimbursement means you pay out of pocket and submit receipts to get paid back for actual costs. Per diems are simpler but may not cover your real expenses.