Business expenses: categories, tracking and deductions

Published Monday 30 March 2026

Table of contents

• What are business expenses?
• Types of business expenses
• Common business expense categories
• The importance of tracking business expenses
• How tracking expenses will lower your tax bill
• What are tax deductible expenses, anyway?
• Examples of non-deductible business expenses
• Methods to track business expenses
• What records should you keep?
• How to reimburse expenses
• Creating expense reports
• Develop a system for expense tracking
• Simplify expense tracking with Xero
• FAQs on business expenses

Key takeaways

• Track all business expenses through a single business bank account and maintain detailed records including receipts, invoices, and bank statements to reduce your taxable income and avoid paying more tax than necessary.
• Categorise your expenses into fixed costs (rent, insurance), variable costs (inventory, shipping), operating expenses (wages, supplies), and capital expenses (equipment, vehicles) to better forecast cash flow and identify cost-cutting opportunities.
• Establish a consistent expense tracking system that includes regular recording, clear categories, secure storage of receipts, and monthly reviews to keep your numbers accurate and tax filings correct.
• Create detailed expense reports for reimbursements that document what was purchased, who made the purchase, when it occurred, the business purpose, the amount paid, and include proof of purchase for all tax-deductible expenses.

What are business expenses?

Business expenses are the costs you incur to run your business. They include money paid for inventory, supplies, insurance, rent, and utilities. Expenses are subtracted from income to calculate profits.

Types of business expenses

Understanding how expenses are classified helps you organise your records and plan your budget. Here are the main types:

• fixed expenses: costs that stay the same each month, such as rent, insurance, and loan payments
• variable expenses: costs that change based on business activity, such as inventory, shipping, and utilities
• operating expenses: day-to-day costs of running your business, such as wages, supplies, and marketing
• capital expenses: purchases of long-term assets, such as equipment, vehicles, or property

Knowing the difference helps you forecast cash flow and identify where you can cut costs.

Common business expense categories

Organising expenses into categories makes tracking and tax reporting easier. Common categories for small businesses include:

• office and administrative: rent, utilities, office supplies, postage
• employee costs: wages, superannuation, training, recruitment
• sales and marketing: advertising, website hosting, promotional materials
• professional services: accounting fees, legal fees, consulting
• travel and transportation: fuel, flights, accommodation, vehicle maintenance
• technology and software: computers, software subscriptions, internet
• facilities and equipment: repairs, maintenance, equipment purchases
• insurance: business insurance, professional indemnity, workers' compensation

Check with your tax office or accountant to confirm which expenses are deductible in your situation.

The importance of tracking business expenses

Tracking your business expenses helps you stay profitable and compliant. It matters because it helps you:

• budget control: understand all your costs to stay on top of spending
• lower tax bills: claim deductible expenses to reduce what you owe
• accurate reimbursements: repay friends, family, and employees who buy things for the business

You can use accounting software like Xero to track and manage business expenses.

How tracking expenses will lower your tax bill

Tracking expenses reduces your taxable income. Your business pays taxes on profits, and you report those profits to the tax office at the end of each financial year.

If you miss an expense, your profits look bigger than they really are, and you pay more tax than necessary. Mistakes cost you money.

What are tax deductible expenses, anyway?

A tax deductible expense is a business cost that the tax office agrees was necessary to run your business. Only certain purchases qualify as deductions.

Check your tax office website for guidance on what qualifies, or speak to a tax professional for advice specific to your situation.

Examples of non-deductible business expenses

Not every business cost qualifies as a tax deduction. Knowing what you can't claim helps you avoid errors and potential penalties. Common non-deductible expenses include:

• personal expenses: costs that aren't related to running your business. If an expense has both business and personal use, you must split the cost and only deduct the business portion.
• entertainment: client entertainment and some meal expenses; in certain situations, businesses can deduct up to 50% of the cost of business meals, as long as the expense is not lavish.
• fines and penalties: parking tickets, late fees, and regulatory fines
• political contributions: donations to political parties or campaigns
• undocumented expenses: purchases without receipts or proof of payment

When in doubt, check with your tax office or speak to an accountant before claiming a deduction.

Methods to track business expenses

The simplest way to track expenses is to pay for everything through a single business bank account. You can then copy costs from your bank statement to your business ledger.

In practice, this rarely happens. Business owners, family members, and employees often pay for things with personal money. These expenses need to be reimbursed and recorded in your business accounts.

What records should you keep?

Keeping accurate records protects you during tax time and audits. Save the following:

• receipts and invoices: proof of every business purchase, including date, amount, and supplier
• bank and credit card statements: records of all transactions through your business accounts
• contracts and agreements: documentation for ongoing services, leases, and employment
• mileage logs: if you claim vehicle expenses, record dates, destinations, and kilometres travelled

How long to keep records: Keep general tax documents for at least three years, though some situations require you to keep them longer. For example, you should keep records for seven years if you have claimed a loss from bad debt. Check your local requirements to be sure.

Digital vs. paper: Digital records are easier to organise and back up. Use accounting software or a dedicated app to store receipts and invoices securely.

How to reimburse expenses

A reimbursement is when the business pays back someone who spent their own money on a business expense. Follow these three steps:

1. Repay: return the money to the individual who paid
2. Record: enter the cost into your business books
3. Document: keep proof of purchase for tax deductible expenses

You can only reimburse expenses when you know about them. Create a report that captures the information you need for all three steps.

Creating expense reports

An expense report documents what was purchased and why. Every report should include:

• what: description of the item or service
• who: the person who made the purchase
• when: the date of purchase
• why: the business purpose
• how much: the amount paid
• proof: receipt or invoice for tax deductible expenses

You can create a simple template for occasional claims. If people submit expenses regularly, an app works better. It lets employees photograph receipts and submit claims from their phone.

Develop a system for expense tracking

A consistent expense tracking system keeps your numbers accurate and your tax filings correct. Create a process that works for your business and stick to it.

A good system includes:

• regular recording: enter expenses weekly or as they happen
• clear categories: group expenses by type for easier reporting
• secure storage: keep digital or physical copies of all receipts
• routine reviews: check your records monthly to catch errors early

Simplify expense tracking with Xero

Accurate expense tracking reduces your tax bill, saves time, and gives you a clear picture of your business finances. Automate your expense tracking so you can focus on running your business instead of managing paperwork.

Simplify your expense tracking today. Get one month free and see how Xero helps you stay organised, compliant, and in control.

FAQs on business expenses

Here are answers to common questions about managing business expenses.

What are the most common business expenses for small businesses?

The most common expenses include rent, utilities, wages, insurance, office supplies, marketing, and professional services such as accounting and legal fees.

How long should I keep business expense records?

Keep general tax documents for at least three years, though some situations require you to keep them longer. For example, you should keep records for seven years if you have claimed a loss from bad debt. Check your local tax authority's guidelines for specific requirements.

Can I claim expenses if I paid with personal money?

Yes, you can claim business expenses paid from personal funds. Reimburse yourself through the business and keep the receipt as proof of purchase.

What happens if I miss claiming a business expense?

Missing an expense means your taxable income appears higher than it should, and you pay more tax. Review your records regularly to catch any missed deductions before you lodge your return.

Do I need receipts for all business expenses?

Yes, you should keep receipts for all business expenses to support your tax deductions. Without proof of purchase, you may not be able to claim the expense if audited.

Xero does not provide accounting, tax, business or legal advice. This guide has been provided for information purposes only. You should consult your own professional advisors for advice directly relating to your business or before taking action in relation to any of the content provided.