How to File a Travel Voucher in Plain English

What a Travel Voucher Actually Is

A travel voucher is the claim you submit after an authorized trip to get reimbursed for what you spent and what you're owed. Think of it as the settlement step: your travel authorization approved the trip in advance, and the voucher is where you reconcile the estimate against reality once you're back. If you traveled on official orders — whether you're a federal civilian on temporary duty (TDY) or a service member — the voucher is how the money finds its way back to you.

Most travelers today file through an electronic system rather than paper. Federal civilians commonly use their agency's booking and reimbursement platform, while the military uses the Defense Travel System (DTS). The exact screens, field names, and routing steps vary by agency and by system, so this guide sticks to the concepts that stay the same everywhere. When you hit a screen-specific question, your travel office or DTS help desk is the right place to confirm the details.

The core idea is simple: you claim certain costs at their actual amount (up to a limit), you receive certain allowances at a flat rate whether or not you spent that much, and you keep documentation to back up the parts that require it. Understanding which bucket each expense falls into is most of the battle.

What You Claim on the Voucher

Lodging is reimbursed as an actual expense, up to a cap. That means you claim what the room actually cost you, but only up to the maximum lodging rate for your destination and travel dates. If you paid less than the cap, you're reimbursed the lower amount you actually paid. If you paid more, the overage generally comes out of your pocket unless a higher rate was specifically authorized in advance. How lodging taxes are treated can vary by location, so confirm the local rule for your destination.

Meals and incidental expenses (M&IE) work differently. Rather than reimbursing your actual restaurant receipts, M&IE is paid as a flat daily allowance tied to your destination. You receive that set amount for each eligible day regardless of whether you spent more or less, which is why you generally don't need to hang onto meal receipts. The incidentals portion is a small, specifically defined allowance — chiefly tips for porters and hotel staff — bundled into the M&IE figure rather than claimed line by line.

If you drove your own vehicle (a privately owned vehicle, or POV) for official travel, you can typically claim mileage at the established per-mile rate for the distance driven, along with allowable related costs such as tolls and parking. Mileage is calculated on distance, not on your actual fuel spending, so you don't claim gas separately when you're being paid the mileage rate. Whether POV travel was the authorized mode, and how the distance is measured, depends on your orders and your agency's rules.

Other trip costs, such as airfare, baggage fees, rental cars when authorized, and certain official expenses, are generally claimed as actuals with supporting documentation. What's allowable and what limits apply depend on your authorization, so use your approved orders as the guide for what you can include.

Receipts: What to Keep and Why

The receipt rule follows the logic of the two buckets. Because lodging is reimbursed as an actual expense, you keep the lodging receipt. It's the proof of what you actually paid, and it's one of the most commonly required documents on any voucher. Save the itemized hotel folio — the version that shows the nightly rate, taxes, and any separate charges — not just a credit card slip.

Because M&IE is a flat allowance rather than a reimbursement of what you spent, you generally do not need meal receipts. This trips people up constantly: travelers hoard every restaurant receipt and skip the one document that actually matters. Focus your receipt-keeping energy on the expenses that are reimbursed at actual cost.

Beyond lodging, keep receipts for other actual-cost items your rules require, which often includes larger expenses and any single expense above a certain threshold. Agencies and systems set their own documentation thresholds, so when in doubt, keep it. A receipt you didn't need costs you nothing; a missing receipt can hold up your entire payment. Confirm your specific requirements in your travel system or with your travel office.

The 75% First and Last Day Rule

On your first and last days of travel, you don't receive the full daily M&IE allowance. Instead, you receive 75% of the M&IE rate for those two travel days. The reasoning is that on a departure or return day you're only traveling for part of the day, so you're not entitled to a full day's worth of meals and incidentals.

This applies specifically to the day you depart and the day you return, regardless of what time of day you actually left or got back. Full travel days in the middle of a trip are paid at the full applicable M&IE rate. So a five-day trip is typically paid as three full days plus two days at 75%.

This is the one specific numeric rule worth memorizing, because it's consistent and it explains a common source of confusion: travelers often expect their M&IE total to be the full daily rate multiplied by every calendar day of the trip, then wonder why the paid amount comes in lower. The first-and-last-day reduction is usually the reason. A good calculator applies this automatically so you can see the correct total before you ever file.

Common Mistakes That Delay Payment

The most frequent error is misunderstanding the two buckets: claiming meals as actual expenses, or expecting to be reimbursed for lodging above the cap without prior authorization. Remember that lodging is actuals-up-to-the-cap and M&IE is a flat allowance. Getting this straight prevents both over-claims that get kicked back and under-claims that leave money on the table.

The second big one is the missing lodging receipt. Because it's a required document in most cases, a voucher without it — or with a non-itemized credit card slip instead of the full folio — is a classic reason for a return. Grab the itemized folio at checkout.

Other recurring problems: forgetting to apply the 75% first/last day reduction and then disputing a "short" payment that was actually correct; entering mileage figures that don't match an authorized method of measuring distance; claiming an expense that wasn't authorized in your orders; and simple mismatches between the dates or amounts on the voucher and the supporting documents. Small inconsistencies force a human reviewer to send it back, and each round trip adds days.

The best habit is to reconcile before you submit: check that lodging is at or under the cap, that your travel days reflect the 75% rule, that receipts match your claimed amounts, and that everything you're claiming was covered by your authorization. Running your trip through a per-diem calculator first gives you a clean expected total to compare against, so surprises get caught before a reviewer catches them. When any detail is genuinely unclear, confirm it in your travel system (such as DTS) or with your travel office rather than guessing.

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