What Business Expenses Are Tax Deductible? (Complete Guide)

One of the most important parts of managing your business finances is knowing what you can deduct.

Because every missed deduction means:

👉You’re paying more than you should

The challenge is that many business owners either:

• Don’t know what qualifies
• Or don’t track expenses properly

This guide breaks it down clearly. 

What Makes an Expense Deductible?

In general, a business expense is deductible if it is:

• Necessary for your business
• Related to your work
• Used to generate income

If an expense meets these criteria, it’s usually considered deductible.

Common Deductible Expense Categories

Here are the most common ones

Supplies

Everyday items needed for your work 

Travel & Transportation

Fuel, parking, transport costs

Meals

Business-related meals

Equipment

Tools, devices, and work-related gear  

Marketing & Advertising

Ads, website costs, branding

Professional Services

Accountants, consultants

Software & Subscriptions

Business tools and apps

Expenses That Are Often Confusing

Some expenses fall into gray areas:

• Mixed personal and business use
• Occasional business-related purchases
• Shared costs

In these cases, only the business portion is typically deductible. 

Why Tracking Matters More Than Knowing 

Knowing what’s deductible isn’t enough. 

If you don’t track it:

👉You can’t claim it

Missing receipts or incomplete records are one of the biggest reasons people lose deductions.  

This is why many business owners rely on tools like Peydo — by automatically tracking and categorizing expenses, it ensures deductible costs are recorded and ready when needed.

Understanding deductible expenses helps you save money.

But tracking them consistently is what actually makes the difference.