If you sell on eBay as a business, you can deduct the cost of your inventory, eBay and payment processing fees, shipping and packaging, mileage, a home office, equipment, and a range of other ordinary business expenses on Schedule C. Every legitimate eBay seller tax deduction lowers both your income tax and your self-employment tax, so the money you track carefully is money you keep. The IRS test is simple: an expense qualifies if it is ordinary (common in your type of business) and necessary (helpful and appropriate for running it).1Internal Revenue Service. Ordinary and Necessary
As a sole proprietor, you report eBay revenue and expenses on Schedule C (Form 1040). Net profit flows to your Form 1040 and is also hit with self-employment tax on Schedule SE.2Internal Revenue Service. Schedule C and Schedule SE That double effect is why deductions matter so much: each dollar you subtract reduces two taxes at once.
Cost of Goods Sold
For most sellers, the inventory you sell is the single biggest deduction. It doesn’t sit on the expense lines of Schedule C. It has its own section. You calculate it by starting with your beginning inventory, adding purchases made during the year (plus labor and materials if applicable), then subtracting your ending inventory.3Internal Revenue Service. Publication 334 – Tax Guide for Small Business The result is subtracted from gross receipts to give you gross profit.
If you buy specifically for resale, at thrift stores, estate sales, wholesale suppliers, or online, track every purchase price with a receipt. If you sell items you already owned, you can include the original cost, but only up to the sale price. You can’t generate a deductible loss on personal property converted to business use. The IRS will not accept a guess at what you paid three years ago.
eBay and Payment Processing Fees
Several eBay charges are fully deductible: final value fees on completed sales, insertion fees for listings, and monthly subscription fees for an eBay Store. Since eBay moved payment processing in-house in 2021, the processing fees now show up on your eBay account statements rather than a separate PayPal account. Any platform fee for handling buyer payments is deductible as an ordinary business expense.
eBay provides detailed fee summaries in Seller Hub, broken out monthly and annually. Download them before tax time. They’re the easiest records you’ll keep, because eBay does the tracking for you.
Shipping, Postage, and Packaging
Every dollar spent moving an item to a buyer is deductible. That covers postage, carrier fees (USPS, UPS, FedEx), shipping insurance, and delivery confirmation. Shipping software subscriptions like Pirate Ship or ShipStation count too.
On the packaging side: boxes, bubble wrap, poly mailers, packing tape, labels, and printer ink for shipping labels are all deductible. So are smaller items that are easy to overlook, like a postal scale, a label printer, measuring tape for calculating dimensional weight, and the tissue paper you wrap fragile items in. If you buy supplies in bulk at the start of the year, deduct them as you use them, or all at once if the amount isn’t large enough to inventory.
Mileage and Travel for Sourcing
Driving to thrift stores, estate sales, flea markets, storage units, or the post office counts as business use of your vehicle. For 2026, the IRS standard mileage rate for business use is 72.5 cents per mile.4Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents per Mile You can use that rate or track actual vehicle costs (gas, insurance, repairs, depreciation) apportioned by business-use percentage, but not both for the same vehicle in the same year.5Internal Revenue Service. Topic No. 510, Business Use of Car Under either method, tolls and parking on business trips are deductible on top.
Longer travel can qualify too. If you attend a trade show, visit a supplier, or take a buying trip to another city, you can deduct airfare, lodging, and 50% of meals while away from home overnight for business.6Internal Revenue Service. Topic No. 511, Business Travel Expenses The trip needs a clear business purpose. A vacation with one stop at a yard sale won’t cut it. Keep a log of where you went, what you sourced, and how it ties to your business.
Home Office
If you use a specific area of your home exclusively and regularly for eBay, whether that’s a spare bedroom turned into a packing station or a corner of the garage where inventory lives, you can claim the home office deduction.7Internal Revenue Service. Topic No. 509, Business Use of Home “Exclusively” is the word to watch. If the space doubles as a guest room, or the kids do homework at the same desk, it doesn’t qualify.
Two calculation options are available. The simplified method deducts $5 per square foot of dedicated business space, up to 300 square feet, capped at $1,500.7Internal Revenue Service. Topic No. 509, Business Use of Home The regular method calculates the business-use percentage of your home’s square footage and applies it to actual housing costs: rent or mortgage interest, utilities, insurance, repairs, and depreciation.8Internal Revenue Service. Publication 587 – Business Use of Your Home The regular method takes more bookkeeping but often produces a larger deduction, especially if your business space is a real chunk of the house. Inventory storage counts, even if it’s a closet, as long as it’s used regularly and only for that purpose.
Equipment and Technology
Cameras for product photography, computers, printers, barcode scanners, dedicated business phones, and lighting are all deductible. Ordinarily, equipment costing more than a few hundred dollars with a useful life beyond one year would be depreciated over several years. Section 179 lets you deduct the full purchase price of qualifying equipment in the year you buy it instead. The 2026 limit is well over $2 million, far more than any eBay seller would ever spend. Bonus depreciation offers a similar first-year write-off for qualifying property placed in service during 2026.9Internal Revenue Service. Depreciation and Recapture
Mixed-use items follow the business-use percentage. A smartphone you use 60% for eBay? Deduct 60% of the cost and 60% of the monthly service bill.
Smaller Categories That Add Up
- Advertising, including eBay promoted listings and social media ads driving buyers to your store.
- Business insurance premiums covering inventory or business liability.
- Professional fees paid to an accountant, bookkeeper, or lawyer for business work.
- Interest on business debt, including a business credit card or a loan used for inventory or equipment. Personal credit card interest never qualifies, even if some purchases were business-related, so keep business spending on a separate card.
- Software subscriptions for accounting, inventory management, listing tools, and cloud storage of business records.
- Education that improves skills you already use in the business, such as courses on product photography, e-commerce strategy, or inventory management. A degree program that qualifies you for a new career does not count.
Self-Employment Tax and the Half-SE Deduction
This is the tax that blindsides first-year sellers. On top of income tax, your Schedule C profit is subject to self-employment tax covering Social Security and Medicare. The combined rate is 15.3% on net earnings: 12.4% for Social Security on the first $184,500 in 2026, and 2.9% for Medicare with no cap.10Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)11Social Security Administration. Contribution and Benefit Base An employer would normally pay half. Self-employed, you pay it all.
The offset: you can deduct the employer-equivalent portion (half of your SE tax) as an adjustment to your adjusted gross income.10Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes) It doesn’t reduce SE tax itself, but it does reduce income tax. And every Schedule C deduction pulls double duty here, lowering the profit subject to income tax and the profit subject to SE tax.
Qualified Business Income Deduction
Sole proprietors may also qualify for the qualified business income deduction under Section 199A, worth up to 20% of net business income. The deduction has been made permanent.3Internal Revenue Service. Publication 334 – Tax Guide for Small Business It’s taken on your personal return against taxable income, and you don’t need to itemize to claim it.12Internal Revenue Service. Qualified Business Income Deduction
The deduction phases out at higher income levels, and some service businesses face extra limits. For a typical reselling operation with taxable income below roughly $200,000 (single) or $400,000 (married filing jointly), the full 20% is generally available. On $50,000 of net eBay profit, that’s a $10,000 reduction in taxable income on top of every Schedule C deduction.
None of This Works If the IRS Calls It a Hobby
Before any deduction applies, the IRS needs to see a business, not a hobby. If your eBay activity is classified as a hobby, you still owe tax on the income, but you cannot deduct losses against your other earnings.13Internal Revenue Service. Know the Difference Between a Hobby and a Business Full tax on revenue, no offset for what you spent.
The factors that carry the most weight for eBay sellers: whether you keep accurate books and records, whether you change your methods to improve profitability, how much time and effort you put in, and whether you’ve earned a profit in at least three of the last five years.13Internal Revenue Service. Know the Difference Between a Hobby and a Business No single factor decides it. Sellers who treat the activity casually, keep no records, and lose money year after year are the ones most at risk. Run the operation like a business from day one: track every purchase, log your mileage, keep a separate bank account.
Records That Hold Up
The IRS requires you to keep records supporting your income and deductions for at least three years after filing.14Internal Revenue Service. How Long Should I Keep Records Save purchase receipts for inventory, shipping receipts, eBay fee statements, bank and card statements showing business transactions, a mileage log with dates and destinations, and photos or scans of sourcing receipts that might fade. The sellers who lose at audit time usually aren’t the ones who claimed the wrong thing. They’re the ones who claimed the right thing and couldn’t prove it.