Reseller Tax Calculator

Do Resellers Owe Taxes?

Yes. If you buy items and resell them for a profit, the IRS considers that taxable income regardless of whether you do it full-time or as a side hustle. Many new resellers assume they do not owe taxes because they sell on platforms like eBay, Poshmark, or Mercari "casually," but the IRS does not see it that way. If you are selling with the intent to make money and you do so regularly, you have a business — and businesses owe taxes on their net profit.

The good news is that you are taxed on your net profit, not your gross revenue. If you sold $20,000 worth of items but spent $12,000 buying that inventory, your taxable income from reselling is $8,000 (minus any additional deductions). This is why tracking your cost of goods sold and business expenses is critical — every deductible dollar directly reduces what you owe.

1099-K Thresholds: When Platforms Report Your Income

Starting in 2025, payment platforms and marketplaces are required to send you a 1099-K form if you received more than $2,500 in gross payments during the year. This threshold is set to drop to $600 in future years. The 1099-K reports your gross sales to the IRS, which means the IRS knows how much you received before you even file your taxes.

It is important to understand that the 1099-K reports gross payments, not profit. If you sold $5,000 on eBay, the 1099-K shows $5,000 — it does not account for what you paid for inventory, shipping costs, or platform fees. You report these deductions on your tax return (Schedule C) to arrive at your actual taxable income.

Even if you do not receive a 1099-K because you are below the threshold, you are still legally required to report the income. The 1099-K is an information return — it does not determine whether you owe taxes. Your obligation to report income exists regardless of whether a form is issued.

Hobby vs Business: How the IRS Decides

The IRS draws a line between hobbies and businesses, and the distinction matters significantly for your taxes. If your reselling is classified as a business, you can deduct all ordinary and necessary business expenses against your income. If it is a hobby, you report the income but cannot deduct expenses (as of current tax law).

The IRS considers several factors: Do you conduct the activity in a businesslike manner (keeping records, tracking inventory)? Do you depend on the income? Do you put in regular time and effort? Have you made a profit in at least 3 of the last 5 years? Do you have expertise in the area? No single factor is decisive, but if you are sourcing regularly, listing consistently, and intending to profit, you are running a business.

Most active resellers clearly operate a business. If you are going to thrift stores weekly, listing items daily, and tracking your inventory, you are a business in the eyes of the IRS. Treat it as one from the start — register as a sole proprietorship or LLC, get an EIN, and keep clean records. It protects you and maximizes your deductions.

Common Reseller Tax Deductions

Deductions reduce your taxable income, which directly lowers the amount of tax you owe. Here are the most common deductions resellers should be claiming:

• ✓ COGS (Cost of Goods Sold) — What you paid for items you resold. This is typically your largest deduction. Keep every receipt from thrift stores, garage sales, estate sales, liquidation pallets, and wholesale purchases.
• ✓ Mileage — $0.70/mile (2025 rate) for all business-related driving: sourcing trips to thrift stores, post office runs, supply store visits, and meetups for local sales. Track every trip with an app like MileIQ or a simple spreadsheet.
• ✓ Shipping supplies — Boxes, tape, poly mailers, bubble mailers, labels, printer ink, tissue paper, and a thermal printer. All deductible.
• ✓ Home office — If you have a dedicated space for photographing items, storing inventory, or packing orders, you can deduct a portion of your rent/mortgage, utilities, and insurance. The simplified method allows $5 per square foot up to 300 sq ft ($1,500 max).
• ✓ Phone & internet — The business percentage of your monthly phone and internet bills. If you use your phone 50% for reselling (photos, listings, research, communication), you can deduct 50% of the bill.
• ✓ Platform fees — eBay, Poshmark, Mercari, Whatnot, and other marketplace seller fees are deductible business expenses.
• ✓ Software & subscriptions — Listing tools, inventory management apps, accounting software, cloud storage for photos, and any paid tools you use for your reselling business.
• ✓ Equipment — Camera, ring light, mannequin, steamer, clothing rack, shelving, and storage bins used for your business.

Quarterly Estimated Tax Payments

As a self-employed reseller, taxes are not withheld from your income the way they are from a W-2 paycheck. Instead, the IRS expects you to make quarterly estimated tax payments throughout the year. If you expect to owe $1,000 or more in taxes for the year, you are required to make these payments or face underpayment penalties.

• ✓ Q1: April 15 — covers income from January through March
• ✓ Q2: June 15 — covers income from April through May
• ✓ Q3: September 15 — covers income from June through August
• ✓ Q4: January 15 (of next year) — covers income from September through December

You can make quarterly payments using IRS Direct Pay (irs.gov/payments) or by mailing Form 1040-ES with a check. The simplest approach is to set aside 25-30% of your net profit each month in a separate savings account, then pay quarterly from that account. This prevents the painful surprise of a large tax bill at year-end.

Record Keeping Tips for Resellers

Good record keeping is the foundation of minimizing your tax burden and surviving an audit. At minimum, you should track: every item you purchase (date, source, cost), every item you sell (date, platform, sale price, fees), all business expenses (shipping, supplies, mileage), and all business-related receipts.

A simple spreadsheet works for many resellers. Track each item with columns for: purchase date, source, cost, listing platform, sale date, sale price, platform fees, shipping cost, and net profit. Apps like Whatnot, eBay, and Mercari provide transaction history exports that make this easier. For mileage, use a dedicated app that logs trips automatically via GPS.

Keep receipts for at least 3 years (the IRS statute of limitations for most audits) and up to 7 years if you want extra protection. Digital photos of paper receipts are acceptable — snap a photo of every thrift store receipt immediately after purchase. Many resellers use apps like Expensify or simply a dedicated Google Drive folder organized by month.

State Sales Tax Obligations for Resellers

State sales tax is separate from income tax. In most states, if you sell physical goods, you are required to collect and remit sales tax. However, major platforms like eBay, Poshmark, Mercari, and Amazon now collect and remit sales tax on behalf of sellers in most states (called marketplace facilitator laws). This means the platform handles sales tax collection for you on sales made through their marketplace.

Where it gets more complicated is if you sell locally (Facebook Marketplace, Craigslist, in-person) or through your own website. In those cases, you may need to collect sales tax yourself. Most states require you to obtain a sales tax permit (often called a resale certificate or seller's permit) if you are regularly selling goods.

A resale certificate also allows you to buy inventory without paying sales tax at the point of purchase, since you will be collecting sales tax when you resell the item. This is particularly useful when buying from wholesale suppliers, liquidation companies, or retail stores for the purpose of resale.

When to Get an Accountant

Many resellers handle their own taxes with software like TurboTax Self-Employed or FreeTaxUSA when they are first starting out. This works fine when your reselling income is straightforward — one platform, clear expenses, no inventory complications. However, as your business grows, a tax professional becomes increasingly valuable.

Consider hiring a CPA or enrolled agent when: your reselling revenue exceeds $50,000/year, you sell across multiple platforms and states, you have significant inventory at year-end, you want to form an LLC or S-Corp for tax benefits, or you receive an IRS notice or audit letter. A good accountant often saves you more in taxes than they charge in fees by identifying deductions you missed.

When choosing an accountant, look for one familiar with e-commerce or self-employment. Ask if they have experience with resellers or small online businesses. The cost for a CPA to prepare a Schedule C return typically ranges from $200-500, which is itself a deductible business expense.

IRS Audit Triggers for Resellers

While IRS audits are relatively rare (less than 1% of returns), certain patterns increase your chances of being selected. For resellers, the most common audit triggers include: reporting gross revenue that does not match your 1099-K forms, claiming deductions that are disproportionately large relative to your income, reporting losses year after year (which signals a hobby rather than a business), and failing to report income from platforms that issued 1099-K forms.

The home office deduction is another audit flag, but only if you cannot substantiate it. If you genuinely have a dedicated space for your reselling business, claim it — just be prepared to prove it with photos and measurements if asked. The same applies to mileage: keep a log with dates, destinations, and business purpose for every trip you claim.

The best audit protection is accurate, well-organized records. If every number on your tax return is backed by a receipt, bank statement, or transaction record, an audit is just an inconvenience rather than a crisis. Keep digital copies of everything and maintain organized records from day one.

Frequently Asked Questions