What Business Expenses You Can Deduct on a 1099

You can deduct ordinary business expenses from your 1099 income, which lowers the amount you owe tax on

When you receive a 1099 form, the income reported is what you earned before any business costs. The IRS lets you subtract legitimate business expenses from that income on Schedule C (the form where 1099 income goes). This is called taking a deduction. The key rule: the expense must be both ordinary (common in your line of work) and necessary (helpful to running your business).

You do not deduct these expenses on your main tax return. Instead, you list them on Schedule C, which calculates your actual profit. That profit is what gets taxed, not your gross 1099 income. This is why tracking expenses matters — a $50,000 1099 with $15,000 in deductions means you only pay tax on $35,000.

The IRS publishes a list of common deductible expenses in Publication 587 (for home-based businesses) and Publication 334 (for small businesses). Your expenses must be documented — receipts, invoices, bank statements, or credit card records. You keep these records for at least three years in case the IRS asks.

Key Takeaways

• Business expenses reduce your taxable income on Schedule C, so tracking them lowers your tax bill even though they do not appear on your 1099 form itself.
• An expense is deductible only if it is ordinary in your field and necessary to earn your income — a home office is deductible for a consultant but not for someone who works on-site.
• You must keep receipts and records for at least three years, because the IRS can ask to see proof of any deduction you claim.
• Some expenses are partially deductible — a car used partly for business, a phone used partly for personal calls — and you deduct only the business percentage.
• Certain large purchases (equipment, vehicles) are not fully deductible in one year; instead, you deduct them over several years using depreciation rules.

Common expenses you can deduct

Office supplies and materials are deductible if they are consumed or used up in your business. This includes paper, pens, ink, printer cartridges, software subscriptions, and website hosting. A desk or filing cabinet that lasts more than a year is not an office supply — it is equipment, and the rules are different (see the depreciation section below).

Home office is deductible if you use a room or space regularly and exclusively for business. You can deduct either the actual expenses (rent or mortgage interest, utilities, insurance, repairs) or use the simplified method ($5 per square foot, up to 300 square feet, for a maximum of $1,500 per year). You cannot deduct a home office if you also work elsewhere as your primary job.

Vehicle and mileage is deductible if the vehicle is used for business. You track either actual expenses (gas, oil, repairs, insurance, registration) or use the standard mileage rate (set by the IRS each year; check IRS.gov for the current rate). You cannot deduct commuting to a regular workplace, but you can deduct trips to client sites, supply runs, or bank deposits. Keep a mileage log with dates, destinations, and business purpose.

Professional services — accountant fees, legal fees, bookkeeper fees — are deductible. So are fees to contractors you hire to do work for your business (a graphic designer, a plumber if you run a contracting business, a virtual assistant). These are reported on Schedule C, not on a separate 1099 form you receive.

Advertising and marketing are deductible: website design, social media ads, business cards, flyers, local directory listings, and sponsorships. A personal website or social media account used only for personal posts is not deductible.

Insurance related to your business is deductible: liability insurance, professional insurance, vehicle insurance (for the business-use portion), and health insurance if you are self-employed (though this also has a separate deduction on the front of your tax return). Homeowners insurance is not deductible, even if you have a home office.

Education and training are deductible if they maintain or improve skills you use in your current business. A course to learn new software for your field is deductible. A course to change careers is not. Books, certifications, and conference fees count if they relate to your business.

Expenses that are not deductible

Personal expenses are never deductible, even if you use them sometimes for business. Groceries, gas for personal driving, rent on your home (unless you have a dedicated home office), and personal phone service are not deductible. A phone plan is deductible only if it is a separate business line or if you can document the business percentage of a shared plan.

Commuting is not deductible. Driving from your home to a regular workplace, even if you are self-employed, is a personal expense. Driving from your home to a client site is deductible. The distinction is whether you have a regular workplace or whether each job is a separate destination.

Meals and entertainment have strict rules. As of 2024, you can deduct 50% of meal expenses if they are directly related to your business (a working lunch with a client). Entertainment expenses (tickets, golf outings) are generally not deductible. Check the current rules on IRS.gov, as these have changed in recent years.

Clothing is not deductible unless it is a uniform required for your job and unsuitable for everyday wear. Business casual clothing is not deductible. A nurse's scrubs or a security guard's uniform is deductible.

Fines and penalties are not deductible. If you pay a parking ticket or a late fee to a vendor, you cannot deduct it.

How depreciation works for equipment and vehicles

Large purchases — a computer, a camera, a vehicle, furniture — are not fully deductible in the year you buy them. Instead, you deduct them over several years using depreciation. The IRS assumes these items lose value over time, and you deduct a portion of the cost each year.

The number of years depends on the type of asset. A computer is typically depreciated over five years. A vehicle is typically depreciated over five years. Furniture is typically depreciated over seven years. You do not choose the timeframe — the IRS publishes these schedules in Publication 946.

There is an exception: Section 179 allows you to deduct the full cost of certain equipment and vehicles in the year you buy them, up to a limit (the limit changes yearly; check IRS.gov). This is useful if you buy a used vehicle or computer for your business. You must use the item more than 50% for business to claim Section 179.

Depreciation is calculated on Schedule C, and the math can be complex. Many people use tax software or a tax professional to handle it. If you are unsure whether an item qualifies, ask your accountant before you buy it.

Partial deductions for mixed-use expenses

If an expense is partly business and partly personal, you deduct only the business portion. A vehicle used 60% for business and 40% for personal driving means you deduct 60% of the actual expenses (or 60% of the mileage if you use the standard rate).

A phone plan used for both business and personal calls can be deducted if you can reasonably estimate the business percentage. Keep a log for a few weeks to establish the split, then use that percentage for the year. A home office deduction is based on the square footage of the office divided by the total square footage of your home.

The IRS expects you to be honest about these percentages. If you claim 90% business use for a vehicle but your mileage log shows 50%, the IRS can disallow the entire deduction and assess penalties. Document your estimate and keep records to support it.

Record-keeping and documentation

You must keep records for at least three years after you file your return. The IRS can ask to see proof of any deduction. For most expenses, a receipt or invoice is enough. For vehicle mileage, you need a log with the date, destination, miles driven, and business purpose.

Digital records are acceptable. A photo of a receipt, a credit card statement, or a bank transfer record all count as documentation. Many people use accounting software (QuickBooks, FreshBooks, Wave) or spreadsheets to organize expenses by category. This makes it easier to fill out Schedule C and faster to find records if the IRS asks.

If you lose a receipt, a credit card or bank statement showing the charge is usually acceptable as backup. The IRS is more interested in whether the expense is legitimate than in the exact format of your records.

Frequently Asked Questions

Can I deduct a home office if I also work at a client's location?

Yes, if you use a dedicated space in your home regularly and exclusively for business. The fact that you also work on-site does not disqualify a home office. Many consultants, freelancers, and contractors have both a home office and work at client locations. The key is that the home space must be used only for business, not for personal activities.

What if I use my personal car for business sometimes?

Track the business miles separately from personal miles. You can deduct either the actual expenses (gas, insurance, repairs) multiplied by the business percentage, or use the standard mileage rate for the business miles only. Keep a log with dates and destinations. If you cannot document the business percentage, the IRS may disallow the deduction.

Do I need to deduct expenses, or can I just report the 1099 amount?

You can choose not to deduct expenses, but that means paying tax on more income than you actually kept. If you earned $50,000 on a 1099 but spent $15,000 on legitimate business expenses, reporting the full $50,000 means paying tax on money you never had. Deducting the expenses is the legal way to report your actual profit.

Can I deduct a loss if my business expenses exceed my income?

Yes. If you spent $20,000 on a business that earned only $15,000, you have a $5,000 loss. This loss can reduce other income on your tax return (wages from a job, for example). However, if you report losses for several years in a row, the IRS may question whether you are running a real business or a hobby. Keep records showing your efforts to make the business profitable.

What happens if I deduct an expense and the IRS disagrees?

The IRS may disallow the deduction and ask you to pay back taxes plus interest. If the disallowance is large or the IRS thinks you were intentionally dishonest, you may also owe penalties. This is why documentation matters — if you can show a receipt and explain why the expense is ordinary and necessary for your business, the IRS is more likely to accept it.