An expense report is the document that turns a pile of receipts into money back in your account. It exists to answer three questions for whoever approves it: what did you spend, what was it for, and can you prove it. A report that answers all three cleanly gets paid. One that leaves any of them open comes back to you, and reimbursement slips another pay cycle.
This guide covers every field a complete expense report needs, the receipt rules that decide whether a line survives review, the categories finance teams expect, and the specific mistakes that get reports rejected. There is a copy-ready format at the end.
What an expense report is for
Two audiences read it, and they want different things.
Your manager is checking that the spending was reasonable and genuinely for work. They care about the business purpose more than the paperwork.
Finance or accounting is checking that each line is substantiated well enough to sit in the company's books and survive an audit. They care about the receipt, the date, the category and the amount matching exactly.
Most rejections happen because a report satisfies one of those readers and not the other. A line that says "client dinner — $180" with a receipt attached satisfies finance and tells your manager nothing. A line that says "dinner with the Henderson team to close the renewal" with no receipt does the opposite.
The header: fields every report needs
Before a single expense line, the report should identify itself. Missing header fields are the most common reason a report gets returned unread.
Your full name and employee or contractor ID
Department, team or cost centre — this decides which budget the spend lands against
Report period — the date range covered, not just the submission date
Purpose — a one-line summary: "Q3 client visits, Chicago" or "AWS Summit, 12–14 June"
Project, client or job code if your company bills work through to clients
Submission date
Approver — the person who signs it off
The line items: what each expense row must carry
Every individual expense needs its own row, and every row needs the same seven pieces of information. Grouping several purchases into one line is one of the fastest ways to get a report queried.
Date — the date of the transaction, which must match the receipt exactly
Vendor or merchant — who you paid
Category — from your company's list, not invented
Business purpose — the why, in a specific sentence
Payment method — personal card, company card, or cash. This determines whether you are actually owed anything
Amount, with the currency stated
Tax or VAT, separated out where your finance team reclaims it
The business purpose field is the one people rush, and it is the one that decides how fast a report moves. "Lunch" is not a business purpose. "Lunch with Maria Chen (Acme Corp) to discuss the renewal" is. The test is whether someone reading it in twelve months, during an audit, would understand why the company paid.
The totals block
Underneath the lines, the arithmetic has to be visible and correct.
Subtotal by category — helpful for the approver, and often required
Mileage, calculated as miles × your company's rate, shown as a separate line with the rate stated
Total expenses
Less any cash advance or amounts already paid on a company card
Total reimbursable — the number you are actually asking for
Signature and date, plus a space for the approver's
That "less advances" line matters more than it looks. If you took a float or put part of the trip on a company card, and the report shows only a gross total, finance has to work out what you are owed — and while they do, your report sits in a queue.
The categories finance expects
Use your company's category list where one exists. Where it does not, these are the standard groupings:
Travel — transport: flights, trains, taxis, rideshare, car hire, fuel, parking, tolls
Travel — mileage: personal vehicle use, claimed per mile rather than by fuel receipt
Accommodation: hotels and short-term stays. Usually needs an itemised folio, not just the card slip
Meals: often split into meals while travelling and client entertainment, because they are treated differently for tax
Client entertainment: normally requires you to name who attended
Office supplies and equipment
Software and subscriptions
Professional development: conferences, courses, memberships
Telecoms: phone and data, often a fixed monthly allowance instead
Never invent a category to make something fit. If a purchase does not belong anywhere on the list, that is a signal to check with finance before submitting rather than after.
Receipt rules: the part that gets reports rejected
This is where most reports fail, and where a receipt generator earns its place.
Itemised beats total. For meals and hotels especially, finance usually wants the itemised receipt showing what was actually bought — not the card terminal slip showing only the total. The itemisation is what lets them separate alcohol, room service or personal items that are treated differently.
There is almost always a threshold. Most policies require a receipt for anything above a set amount, commonly around $25 or $75 depending on the company, and many now require one for everything. Thresholds vary by employer and by jurisdiction, and tax rules on substantiation change — check your own policy and confirm anything tax-sensitive with your finance team or accountant rather than relying on a number you read online.
Legibility counts. Thermal receipts fade, sometimes within months. Photograph or scan them the day you get them, not the week the report is due.
A lost receipt is not automatically a lost claim. Most companies have a missing-receipt process: a signed declaration stating what was bought, when, from whom and why. Expect it to be scrutinised more closely, and expect a limit on how often you can use it. Our guide on what to do when you lose a receipt covers the options, and if you need to reconstruct a record from a card transaction, recreating a receipt from a bank transaction walks through it honestly.
One rule that should not need saying: reconstruct records of things you actually bought. Creating documentation for expenses that did not happen is expense fraud, and it is a dismissal-and-prosecution matter rather than a paperwork one.
What gets an expense report sent back
No business purpose, or one so vague it explains nothing
Missing or unreadable receipts
A total-only receipt where an itemised one was required
Dates that do not match between the line and the receipt
Personal items mixed in — the toothpaste bought alongside the client dinner
Duplicate submission — the same receipt claimed twice across two periods
Company-card spending claimed as reimbursable, which is the most common honest mistake
Foreign currency left unconverted, with no rate or date shown
Late submission past the policy window, which some companies decline outright
A copy-ready expense report format
Adapt this structure in a spreadsheet or your expense tool. The order matters less than the completeness.
Header
Name · Employee ID · Department / cost centre · Period covered · Purpose · Project or client code · Date submitted · Approver
Line items table
Date | Vendor | Category | Business purpose | Paid by | Amount | Tax |
|---|---|---|---|---|---|---|
12 Jun | United Airlines | Travel — transport | Flight to Chicago, Acme renewal meeting | Personal card | $412.00 | — |
12 Jun | Hilton O'Hare | Accommodation | 2 nights, Acme renewal meeting | Personal card | $318.40 | $31.84 |
13 Jun | Gibsons | Client entertainment | Dinner with M. Chen (Acme) — renewal terms | Personal card | $186.20 | $18.62 |
14 Jun | Mileage | Travel — mileage | Office to airport return, 46 miles @ rate | — | $30.82 | — |
Totals
Subtotal by category · Total expenses · Less cash advance · Total reimbursable · Employee signature and date · Approver signature and date
Practical habits that make this painless
Photograph the receipt at the table. The single highest-value habit. Thermal ink fades and paper receipts get lost, and the business purpose is easiest to write while you still remember it.
Write the purpose on the receipt image immediately, or in a note attached to it.
Keep personal and business payments separate. One card for work removes an entire class of problem.
Submit on a schedule rather than when you remember. Monthly beats "when it gets big enough".
Keep your own copies. Do not rely solely on the company system — if a claim is queried a year later, your records are what settle it. See how long to keep receipts.
If you are self-employed
There is no one to submit to, but the discipline is the same and the stakes are higher — the record you keep is what supports a deduction if your return is ever examined. You still want the date, vendor, amount, category and business purpose on every expense, and you still want the receipt itself. The difference is that nobody will send it back to you for being incomplete; you simply find out later, at the worst possible moment.
Our guides on simplifying expense tracking and organising receipts digitally cover the systems that work at that scale.
Rules on what is deductible, how long records must be kept, and what counts as adequate substantiation vary by country and change over time. Treat this page as a practical guide to building a complete report, and take tax questions to a qualified accountant.