Ask five freelancers what counts as a business expense and you’ll likely get five different, half-confident answers. The confusion is understandable. The line between a personal cost and a business one isn’t always obvious, and getting it wrong in either direction causes real problems, missed deductions on one side, an audit red flag on the other.
Quick answer: the IRS standard is that a business expense must be both “ordinary” (common and accepted in your line of work) and “necessary” (helpful and appropriate for your business), per Internal Revenue Code Section 162. It doesn’t need to be essential to survival, just a reasonable cost of doing business. The categories and edge cases below cover what that actually means in practice.
The two-part test, explained simply
“Ordinary” means other people in your field would recognize the cost as a normal part of doing that kind of work. A graphic designer buying software licenses is ordinary. A graphic designer buying a commercial oven is not, unless their specific work somehow involves one.
“Necessary” is a lower bar than it sounds. It doesn’t mean indispensable or required for the business to function. It means helpful and appropriate for the business. A second monitor isn’t strictly required to do freelance writing, but it’s a reasonable, helpful purchase for the work, which is enough to clear the necessary test.
Both parts have to be true. An unusual expense that’s genuinely necessary for your specific business can still qualify even if it’s not common in your field generally, and a common expense that has nothing to do with what you actually do for income doesn’t qualify just because other businesses have similar costs.
Common categories that clearly qualify
Office supplies and equipment used for the business, including software subscriptions, a computer, or a desk. Professional services, an accountant, a lawyer, a bookkeeper, when their work relates to the business. Marketing and advertising, a website, business cards, paid ads, a portfolio platform. Business insurance, including professional liability or general business coverage. Business travel, transportation, lodging, and a portion of meals while traveling for client work, see our full breakdown of per diem rates for how the travel side of this works. Education directly tied to maintaining or improving skills used in the current business, a course, a certification renewal, industry conference fees. Business use of a vehicle, calculated either by tracking actual costs or using the IRS standard mileage rate.
The categories people get wrong most often
A home office. This one qualifies far more often than people assume, but only for space used regularly and exclusively for business. A corner of the living room that’s also where the kids do homework doesn’t meet the exclusive-use test, even if a lot of client work genuinely happens there. A dedicated spare room used only for work does qualify, and can be deducted either through simplified square-footage calculation or an itemized approach.
Client meals. Business meals with a client are generally deductible, but only at 50%, not the full amount, and only when there’s a genuine business purpose, not just any meal where work happens to come up in conversation. Keeping a note of who attended and what was discussed protects this deduction if it’s ever questioned.
Clothing. This is one of the most commonly misunderstood categories. Clothing is deductible only if it’s not suitable for everyday wear outside of work, a uniform, branded apparel, safety gear. A nice outfit bought specifically for client meetings doesn’t qualify just because it was purchased for work purposes, since it’s still generally wearable as regular clothing.
Subscriptions and memberships. A software subscription used for client work clearly qualifies. A general news subscription is a harder case, deductible only if there’s a real, specific connection to how it’s used for the business, not just “staying informed” in a general sense.
What clearly doesn’t qualify
Commuting between home and a regular place of work, even though it feels business-related, is treated as a personal expense, not a deductible one. Personal expenses that happen to occur during business hours or activities, a personal errand run during a work trip, don’t become deductible just from proximity to business activity. Fines and penalties, a parking ticket picked up during a client visit, are never deductible regardless of the business context around them.
Why the record matters as much as the expense
An otherwise legitimate expense can become a liability at tax time if there’s no record connecting it to the business. The habit that protects a deduction isn’t complicated: note what the expense was for and which client or project it relates to at the time it happens, not months later trying to reconstruct it from memory. A receipt with no context is far weaker than a receipt with a one-line note attached to it.
Keeping this organized as you go
Sorting business expenses from personal ones after the fact, digging through a bank statement in April trying to remember what a specific charge was for, is where most of the stress around this topic actually comes from. Categorizing as you go, tied to the client or project each expense relates to, removes that entirely. See our guide to small business bookkeeping for beginners for a simple system, and our quarterly estimated tax guide for how these deductions factor into what you actually owe.
ABsort lets you capture a receipt and tag it to a project the moment an expense happens, so the record exists before you have a chance to forget it, starting at $12/month.
This guide is for general informational purposes and isn’t a substitute for advice from a licensed tax professional, since individual situations vary and tax rules change.