
In a job context, per diem is a daily allowance paid by an employer to cover work-related expenses like meals, lodging, and incidental costs while an employee is traveling away from their home base.
It’s not a part of your salary or hourly wage. Instead, it’s a fixed amount meant to reimburse you for costs you incur on a business trip. Companies often use a standard rate, like the U.S. General Services Administration (GSA) rates, which vary by city and time of year. For example, a per diem of $100 for meals and incidentals means you get that money each day of your trip, regardless of what you actually spend. If you spend $80, you still keep the $20. If you spend $120, you cover the extra $20 yourself.
The key advantage for you is simplicity: no need to save every receipt for meals under $75. The employer benefits because it’s predictable and easy to administer.
Here’s a quick breakdown of the two main types:
| Per Diem Type | What It Covers | Tax Treatment |
|---|---|---|
| Meals & Incidentals | All food, tips, and small purchases like snacks or laundry. | Not taxable if at or below the GSA rate. |
| Lodging | Hotel or rental costs. | Not taxable if at or below the GSA rate. |
The key takeaway is that per diem is a reimbursement tool, not a form of compensation. It keeps your out-of-pocket costs low during work travel without the hassle of detailed expense tracking.

Think of per diem as a "travel budget" your employer gives you. It’s a flat daily rate, so you don’t have to nickel-and-dime your expenses. The best part? If you’re frugal, you pocket the leftover cash. It’s pretty common in construction or consulting jobs where you’re on the road constantly. Just remember, it’s not a bonus—it’s meant to cover your costs, so you’re not paying for dinner out of your own pocket.

Per diem is basically your daily expense money for work trips. It’s set, it’s simple, and it’s tax-free if it’s within the government rate. The main thing to know is that it’s separate from your salary. I’ve seen it used a lot in nursing and field service roles. If you’re ever offered a job with per diem, ask about the specific rate for the city you’ll be in—it can vary a lot.

From a hiring manager’s perspective, per diem is a straightforward tool to keep travel costs predictable. We set a flat daily rate, often based on the GSA schedule, and that’s it. No reviewing dozens of receipts. For a candidate, it means you have a clear, upfront understanding of what your travel budget is. It’s a big plus for roles that require frequent trips, because it removes the guesswork from your personal finances.

Per diem is a daily allowance for work travel expenses. It’s not extra pay—it’s a reimbursement. The real value is that it’s simple and predictable. You get the same amount each day, and you often keep any leftover money. This is great for roles like traveling sales or IT support. Just be careful: if your per diem is higher than the official IRS rate, the extra amount becomes taxable income. Always check the limits.


