Expense policy best practices and what to include

Your expense policy is the single document that determines whether your team spends wisely or wastes money on gray-area purchases. A well-written policy gives employees clear guardrails, keeps your finance team out of arguments about what's reimbursable, and protects you during audits.

What is an expense policy?

An expense policy is a document that outlines how your company handles business expenses incurred by your employees. While expense policies can vary from one company to another, they should always communicate three basic elements:

1. The categories and specific employee expenses eligible for reimbursement
2. The format in which to write expense reports
3. The employee reimbursement process and workflow

Why you need an expense policy

Expense policies are a critical piece of your company's overall expense management process. They help you control costs, optimize cash flow, plan accurate budgets, and comply with industry and tax regulations.

Cost control and budget accuracy

A written policy prevents surprise expenses and gives you predictable spending data for budgets. When every employee knows the limits before they swipe, you don't discover a $4,000 conference registration in your monthly close.

Fraud and misuse prevention

Clear rules reduce gray areas that enable expense fraud. Expense reimbursement fraud appears in 13% of occupational fraud cases, according to the Association of Certified Fraud Examiners' (ACFE) 2024 Report to the Nations. Explicit categories, receipt requirements, and approval workflows make fraudulent claims harder to submit and easier to catch.

Compliance and audit readiness

Documented policies with receipt requirements keep you IRS-compliant and audit-ready. If the IRS questions a deduction, you can point to the company expense policy that required the documentation.

Employee clarity

When your team knows what they can and can't expense, they spend faster and submit fewer questions to finance. That means less back-and-forth for your accounts payable (AP) team and faster reimbursement cycles for everyone.

3 pillars of an effective expense policy

A fit-for-purpose expense policy sets parameters in advance while giving your employees the autonomy to operate within those bounds. Effective expense policies build on three foundational pillars:

1. Before spending happens: Set approval policies that give line-of-business (LOB) leaders the controls to approve expenses in advance. For example, require manager pre-approval for any purchase over $500 and set department-level monthly budgets.
2. When spending happens: Corporate cards with built-in policy rules block out-of-policy merchants or spending categories in real time, catching mishaps before they hit your books
3. After spending happens: Give your team multiple channels (email, Slack, and SMS) to submit receipts and ask policy questions without waiting for a finance team response

How to write a corporate expense policy

Whether you're starting from scratch or building on an existing framework, your policy should cover six key components:

1. Purpose and scope
2. Expense categories
3. Expense reporting and approval
4. Documentation requirements
5. Non-reimbursable expenses
6. Expense reimbursement

1. Purpose and scope

This is the introduction to your expense policy. It outlines the goals of your expense management policy and explains which team members and departments the policies apply to.

2. Expense categories

The expense categories section explicitly defines which types of expenses your business allows employees to spend company funds on, along with spending limits for each. This section should be detailed enough that there's no room for misinterpretation.

Consider breaking this section into subcategories, with specific guidelines and spending limits for each, including:

• Travel expenses (e.g., airfare, incidentals, and mileage reimbursement for business travel)
• Meals and entertainment expenses (e.g., meal per diem)
• Office supplies and equipment
• Software subscriptions
• Employee training and development, including trade organization memberships
• Health and wellness expenses (e.g., medical expenses)
• Client-related expenses

3. Expense reporting and approval

Once you cover your allowable business expenditures, outline your expense reporting and approval process. Identify the people and teams involved in approvals, and document your full approval hierarchy. That chain typically runs from the employee who incurred the expense up through management to the CFO.

It's also important to describe how employees submit expense reimbursement requests to your accounting or finance team.

Specify the timeline for submitting expenses, the medium to use (such as email or expense management software), and how long approvals should take.

4. Documentation requirements

Documentation is a crucial part of the expense approval process. Within your expense policy, specify what kind of documentation you accept as proof of a legitimate business purchase. Require itemized receipts at minimum, but invoices or credit card statements can work in certain scenarios.

If you plan on writing off your business expenses, it's especially important that your documentation policy reflects the most recent IRS requirements.

5. Non-reimbursable expenses

Your expense policy also details the expenses you won't reimburse. This section should include an exhaustive list so that there's no room for misinterpretation. Clearly define each expense and provide examples wherever possible. Include things like:

• Personal expenses (make sure to provide a comprehensive list under this subcategory)
• Meals with no clear business purpose
• Over-the-limit expenses
• Late submissions
• Expenses without supporting documentation
• Personal penalties or fines
• Purchases from unauthorized suppliers or vendors
• Pending and unapproved expenses

6. Expense reimbursement

Lastly, outline your expense reimbursement process. Under this section, you should cover:

• An estimated timeline for how long reimbursement will take
• The payment method for reimbursing employees
• In which financial period you'll process reimbursements

Expense policy best practices

Most expense policies fail in three places: vague spending limits, missing documentation standards, and enforcement that breaks down at scale.

Set specific spending limits and per diem rates

Vague guidelines like "spend reasonably" create compliance gaps and employee confusion. Without specific numbers, your finance team has no objective basis for denying a claim, and your employees have no clear benchmark for what's acceptable.

Set dollar limits for common expense categories. For travel, that might mean economy class for flights under six hours, a $75 daily meal per diem, and a $150/night hotel cap. Per diem rates should follow General Services Administration (GSA) guidelines for domestic travel, with adjustments for high-cost cities like New York and San Francisco.

Publish these limits in a table your team can reference quickly. When the numbers are specific, employees stop guessing and finance stops arguing.

Require receipts and documentation for every expense

The IRS requires receipts for business expenses of $75 or more, but you should require them for every expense. A blanket receipt requirement creates a cleaner audit trail and eliminates the gray area around smaller purchases that add up over time.

Accept itemized register receipts, email confirmations, and digital photos or scans. Digital receipt capture eliminates lost-paper risk and speeds up the reimbursement process. Your team can snap a photo the moment they pay instead of digging through a wallet two weeks later.

Enforce submission deadlines

Set a clear submission window. Thirty days after the expense is incurred is the industry standard. You can extend to 60 days, but shorter deadlines reduce end-of-quarter bottlenecks and make reconciliation easier.

Delayed submissions are expensive. They're harder to reconcile, create budget surprises, and can result in missed tax deductions if they slip past the filing period.

Your policy should state that late submissions can be denied, but check your state labor laws first. Some states require reimbursement regardless of timing.

Build a clear approval workflow

Define who approves what and at which dollar threshold. A standard expense report policy uses a two- to three-level chain: employee submits, manager approves, finance or AP reviews.

Threshold-based routing makes the process faster. Auto-approve routine expenses under $100, require manager approval for $100–$1,000, and escalate anything above $1,000 to a VP or finance lead. Digital approval workflows replace email chains and cut reimbursement cycle times from weeks to days.

Keep your policy simple and accessible

A policy nobody reads is a policy nobody follows. Keep yours under five pages of plain language, with no legal jargon or ambiguous phrases. If a new employee can't understand a rule in one reading, rewrite it.

Store the policy in an easily accessible location: your company intranet, onboarding docs, or directly inside your expense management platform. Include real-world examples alongside rules. Telling employees that working lunches with clients are reimbursable but team happy hours need pre-approval is clearer than requiring meals to serve a legitimate business purpose.

Automate expense tracking and enforcement

Manual expense tracking is slow, error-prone, and doesn't scale past a handful of employees. Spreadsheets and email-based approvals create bottlenecks that delay reimbursements and let violations slip through.

Smart corporate cards with built-in policy rules block out-of-policy purchases before they happen. You can restrict merchant categories, set daily spending limits, and require pre-approval for specific vendors, all without your finance team reviewing every transaction manually. Automated receipt matching and categorization eliminate manual data entry and reduce the time between purchase and reconciliation.

Audit expenses regularly

You don't need to review every expense report, but you do need a system for catching problems. Risk-based sampling, where you audit a random 10–20% of expense reports monthly, balances thoroughness with efficiency.

Look for patterns: repeat round-number claims, duplicate submissions, and split transactions designed to stay under approval thresholds. These are the most common signs of policy violations or outright fraud. Regular compliance audits also surface policy gaps you can fix proactively, before they become recurring problems.

Expense policy examples and templates

You don't need to start from scratch. Adapt these sample clauses directly into your policy.

Sample meal policy

"Employees may expense business meals up to $75 per person per meal. Meals must include at least one client, prospect, or cross-functional colleague. Receipts are required for all meals regardless of amount. Alcohol is reimbursable only when accompanied by a qualifying business meal and capped at $25 per person."

Sample travel booking policy

"All flights must be booked economy class for trips under six hours. Business class requires VP pre-approval for flights over six hours. Hotel stays are capped at $150/night for standard markets and $250/night for high-cost cities (NYC, SF, LA, Boston, DC). Use the company's preferred booking tool when available."

Sample receipt requirement clause

"All business expenses require an itemized receipt submitted within 30 days of the transaction date. Digital photos, scanned copies, and email confirmations are acceptable formats. Expenses submitted without a receipt will be denied unless the employee provides a written explanation and manager approval within 48 hours."

Ramp's free expense policy builder lets you benchmark your policy against 10,000+ real company policies. You can generate a customized policy template based on your company size, industry, and expense categories, then refine it with the specific limits and rules that fit your team.

Common expense policy mistakes to avoid

Even a well-intentioned policy can fail if it's built on one of these common mistakes.

• Writing a policy that's too vague: "Use good judgment" invites inconsistency and gives your finance team no basis for denying out-of-policy claims. Replace vague language with specific dollar amounts, approved vendors, and clear examples.
• Making the policy too complex: A 30-page document nobody reads is worse than a three-page document everyone follows. Keep rules concise, organize them by category, and cut anything that doesn't directly address a spending scenario your team actually encounters.
• Not updating the policy regularly: Inflation, remote work, and new tax regulations make stale policies a compliance risk. A travel expense policy written in 2019 probably doesn't account for coworking space stipends, home office equipment, or updated IRS mileage rates.
• Skipping enforcement: A policy without consequences is a suggestion. Define what happens when employees violate it: verbal warning for a first offense, denied reimbursement for repeat violations, and escalation to HR for intentional fraud.

Maintaining your expense policy

Your expense policy isn't a one-and-done project. It needs regular updates as your team, spending patterns, and regulations change.

Schedule a review cadence, quarterly if you're growing fast, biannually if your team is more stable, so you're evaluating the full policy on a regular cycle.

Certain triggers should prompt an immediate review, even outside your regular cadence:

• Headcount growth past key thresholds (50, 100, or 500 employees)
• Geographic expansion into new states or countries with different labor laws

• A shift to remote or hybrid work that changes expense patterns
• New regulatory requirements, like updated IRS mileage rates or per diem changes
• Significant vendor changes or new procurement tools

In both cases, pay attention to employee feedback: common questions, repeated violations, and support tickets about gray areas all signal that a section of your policy needs clarification.

Setting clear roles for managing your expense policy

Employees fall into three roles within your expense policy: cardholders, card managers, and admins:

• Cardholders use virtual or physical corporate cards for company-related purchases and submit receipts for expenses over a set threshold. This empowers your employees and reduces the need for extensive monitoring.
• Card managers review their team's spending, approve purchases, and track departmental budgets. This lets your managers keep a close eye on expenses without centralizing the responsibility.
• Admins clarify expense policies, onboard employees, and define roles. Their primary function is to support your managers who oversee day-to-day spending, freeing admins to focus on strategic planning.

Spreading responsibilities across these three roles gives you better visibility into daily spending and makes spend management easier.

This framework scales with your company. At a 20-person startup, the admin and card manager might be the same person handling both roles. At a 500-person company, you'll have multiple card managers per department, each with visibility into their team's spending and the authority to approve within their budget.

Automate expense policy enforcement with Ramp

Even the clearest expense policy won't protect you if it's not consistently enforced. Manual review is tedious, inconsistent, and doesn't scale. Violations are bound to slip through when your finance team is stretched thin.

With Ramp's Policy Agent, you get automated expense review that reads your written policy and evaluates every transaction like a dedicated reviewer would:

• Catch 7x more violations: Ramp flags out-of-policy expenses that rules-based systems miss because Policy Agent reasons through gray areas, not just keywords
• Get 99% accuracy on recommendations: Every expense gets an approval, rejection, or escalation recommendation, with Policy Agent citing the exact policy clause
• Skip 85% of manual reviews: Ramp auto-approves routine, low-risk transactions, so you focus only on the exceptions that need your judgment
• Give employees instant policy answers: Your team can ask "Can I expense this?" via SMS, Slack, or web chat before they spend and get an answer instantly
• Strengthen your policy over time: Policy Agent surfaces ambiguities, contradictions, and gaps so you can tighten rules before they cause problems

Try an interactive demo to see how Policy Agent enforces your expense policy without the busywork.