Self-Employed Tax Deductions: The Schedule C List for Your 2025 Return (and the Ones People Miss)

The spreadsheet wouldn't open. It was the middle of tax season, and the file holding months of my wife's small-business expenses was corrupted. Every row she'd typed by hand was gone.

She rebuilt it from scratch, from receipts scattered across her bag, the car and her inbox. Hours of it, and some receipts still slipped through. Each one was a deduction she was entitled to and couldn't prove. That's what stuck with me: most self-employed people don't lose money by claiming too much. They lose it by claiming too little.

So here's the full list of what freelancers, independent contractors and sole proprietors can deduct on a 2025 return (the one you file in 2026), line by line, plus the ones people forget. Filing in Canada instead? See the T2125 version of this list.

What can self-employed people deduct on Schedule C?

Here are the business expenses most self-employed people claim, with the Schedule C line each one goes on.

The 100% rows are the easy part. The money gets lost in the rows marked "Business %" and "Area %", and in the deductions that live outside Schedule C entirely.

Tracking these as they happen is the whole game. BookkeepAI sorts each receipt into its Schedule C category the moment you snap it.

What is the IRS test for a deductible expense?

An expense is deductible if it's ordinary and necessary for your trade or business. Ordinary means common in your line of work. Necessary means helpful and appropriate, not that you couldn't survive without it. A design subscription is ordinary for a designer. A boat usually isn't.

Two things fail the test every time: personal spending, like your gym or streaming subscriptions, and hobby activity. If you aren't really trying to make a profit, the IRS can treat the activity as a hobby, and hobby expenses aren't deductible.

// Next: the mixed-use costs, where most of the money hides.

How do I deduct my phone and internet?

You deduct the business-use percentage, not the whole bill. If about 60% of your cell phone use is for work, you deduct about 60%. The same goes for home internet and any subscription you use for both work and life.

One quirk: if you use a landline at home, the base rate of the first phone line into your residence isn't deductible, even if you use it for business. Business long-distance calls or a second, business-only line are.

Can I deduct my home office?

Yes, if you use part of your home regularly and exclusively for business, and it's your principal place of business. "Exclusively" is the word that trips people up: a guest room that's also your office fails the test.

You can calculate it two ways:

• Simplified method: $5 per square foot of office space, up to 300 square feet. The maximum is $1,500, and you don't need to track utility bills.
• Regular method (Form 8829): the office's share of your rent or mortgage interest, utilities, insurance, repairs and depreciation. More paperwork, often a bigger deduction for larger spaces or expensive homes.

Either way, the home office deduction can't exceed the income your business earned. Under the regular method, the leftover amount carries forward to next year. Under the simplified method, it doesn't.

Are meals and entertainment deductible?

Business meals are 50% deductible. Entertainment isn't deductible at all. A $120 client dinner is a $60 deduction. Tickets to a game with that same client are $0, and you can't get around it by moving the cost onto the food bill.

This is one of the biggest differences from Canada, where entertainment is deductible at 50%. On every meal receipt, note who you met and the business purpose.

How do vehicle expenses work for the self-employed?

You can use the standard mileage rate or your actual costs, and either way you need a mileage log. The standard rate is 70¢ per business mile for 2025 and 72.5¢ for 2026. Drive 8,000 business miles in 2025 and that's a $5,600 deduction, plus parking and tolls.

With actual costs, you deduct the business share of gas, insurance, repairs, registration and depreciation or lease payments. If you want the standard rate for a car you own, choose it in the first year you use the car for business, or you can lose the option later.

Log the date, miles, destination and purpose of each business trip. A log rebuilt from memory in April is the weakest record you can have.

Can I write off a laptop or equipment in one year?

Usually, yes, which is one of the biggest differences from Canada. You have three routes:

• De minimis safe harbor: elect to expense items costing up to $2,500 per item or invoice, like most laptops, phones and cameras.
• Section 179: deduct the cost of qualifying equipment in the year you start using it. The limit for 2025 is $2.5 million, far above what most freelancers spend.
• Bonus depreciation: 100% first-year depreciation is back for qualifying property acquired and placed in service after January 19, 2025.

You still deduct only the business-use share. A laptop used 70% for work is a 70% deduction.

// The next few deductions are the ones people miss, because they aren't on Schedule C.

What deductions don't go on Schedule C?

Some of the most valuable self-employed deductions go on your Form 1040 instead. Software and accountants usually catch them, but only if you know to ask:

• Half of your self-employment tax. Self-employment tax is 15.3% (Social Security plus Medicare), and you deduct half of it from your income.
• Self-employed health insurance. Premiums for you and your family, if you weren't eligible for an employer's plan.
• Retirement contributions. A SEP-IRA or solo 401(k) lets you put away far more than a regular IRA.
• The qualified business income (QBI) deduction. Up to 20% of qualified business income for many sole proprietors, subject to income limits.

What receipts does the IRS need?

You need records that support every deduction, and for travel, meals and gifts the rules are stricter. The IRS requires a receipt or similar documentary evidence for any lodging expense and for any other travel, meal or gift expense of $75 or more. Bank and card statements show you paid, but a receipt shows what you bought.

Keep records at least 3 years from the date you file. The IRS can go back 6 years if you under-reported income by more than 25%, and some records, like those for equipment you're still depreciating, should be kept for as long as you own the asset plus 3 years. Clear digital copies are fine.

Do I have to pay estimated taxes?

If you expect to owe $1,000 or more when you file, the IRS expects quarterly estimated payments. For 2026 income, they're due April 15, June 15 and September 15, 2026, and January 15, 2027. Every deduction you track lowers the amount you need to send.

What changes for 2026?

• Mileage: the standard rate rises to 72.5¢ per business mile.
• 1099-NEC: clients only have to send one when they pay you $2,000 or more, up from $600, for payments made in 2026.
• 1099-K: payment apps and marketplaces report at more than $20,000 and 200 transactions.

Fewer forms doesn't mean less taxable income. All of it still goes on Schedule C, which makes your own records more important, not less.

Why is under-claiming the bigger risk?

Audits get the headlines. But the quieter, more common loss is the deduction you were entitled to and couldn't prove. The receipt faded in a jacket pocket. The email confirmation got buried. The miles were never written down.

The fix is capturing each expense at the moment it happens, when the receipt is in your hand and the reason is obvious. Thirty seconds then saves an hour of rebuilding later.