Money you make selling on TCGplayer is taxable, and how you report it depends on whether the IRS sees your activity as a business, a hobby, or occasional investing. That single classification decides which form you file, whether you can deduct your card costs, and whether you owe self-employment tax on top of income tax. Getting TCGplayer taxes right starts with picking the correct bucket and reporting every dollar, whether or not the platform sends you a 1099-K.
Business, Hobby, or Investor: Which One Are You
The IRS sorts card-selling into three categories, and the tax bill looks very different in each one.
You’re running a business if you sell with a genuine profit motive. A common benchmark is turning a profit in at least three of the last five tax years, which creates a presumption of profit motive. The IRS also weighs how professionally you operate: separate books, time and effort invested, whether you adjust methods to improve results, and whether you rely on the income. No single factor decides it.1Internal Revenue Service. Know the Difference Between a Hobby and a Business
You’re a hobby seller if the activity lacks a real profit motive. You still owe income tax on gross revenue, but you cannot deduct your costs. More on why that hurts below.
You’re an investor if you bought cards as collectibles and sell them occasionally rather than running an ongoing store. Those sales are capital gains, not ordinary income. Volume and frequency matter here: if you’re moving dozens of cards a week, the IRS is unlikely to accept a passive-investor story.
What Business Sellers File and Pay
Business sellers report on Schedule C, filed with your personal Form 1040.2Internal Revenue Service. About Schedule C (Form 1040), Profit or Loss From Business (Sole Proprietorship) The math: gross receipts from all sales, minus Cost of Goods Sold (what you paid for the cards), minus operating expenses like platform fees, shipping, and supplies. What’s left is your net profit, which moves to Schedule 1 of Form 1040 and joins your other income.3Internal Revenue Service. Instructions for Schedule C (Form 1040)
That net profit is taxed at your ordinary federal rate. And if it exceeds $400, it also triggers self-employment tax, which is where surprise bills come from.4Internal Revenue Service. Topic No. 554, Self-Employment Tax
Self-Employment Tax
Because you’re self-employed, you pay both halves of Social Security and Medicare yourself. The combined rate is 15.3%: 12.4% Social Security and 2.9% Medicare.5Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes) The Social Security portion applies only to the first $184,500 of net earnings in 2026; the Medicare portion has no cap.6Social Security Administration. What Is the Current Maximum Amount of Taxable Earnings for Social Security
You calculate self-employment tax on Schedule SE. One partial offset: you can deduct half of your self-employment tax when calculating adjusted gross income. That deduction goes on Schedule 1, not Schedule C, and you get it whether or not you itemize.
Why Hobby Sellers Pay More on Less
If your activity is a hobby, you still report every dollar of gross revenue as “Other Income” on Schedule 1.1Internal Revenue Service. Know the Difference Between a Hobby and a Business But under the Tax Cuts and Jobs Act, miscellaneous itemized deductions were suspended starting in 2018, and the One Big Beautiful Bill made that suspension permanent. Hobby expenses — including the purchase price of the cards themselves, shipping, and platform fees — are not deductible.
The result: a hobby seller who buys a card for $80 and sells it for $100 can owe income tax on the full $100, not the $20 profit. The effective tax rate on the actual profit can exceed 100%. That’s why documenting a genuine profit motive from day one matters so much if you sell regularly.
The inflated gross income also raises your adjusted gross income, which can reduce education credits, retirement contribution deductions, and other income-sensitive benefits.
Capital Gains for Occasional Investor-Sellers
The IRS classifies trading cards as collectibles, and collectibles carry their own capital gains rules.7Internal Revenue Service. Topic No. 409, Capital Gains and Losses
- Held over one year: long-term capital gain, taxed at a maximum rate of 28% — higher than the 15% or 20% rate on stocks.
- Held one year or less: short-term capital gain, taxed as ordinary income.
Investor sales go on Form 8949, with totals flowing to Schedule D.8Internal Revenue Service. About Form 8949, Sales and Other Dispositions of Capital Assets Unlike hobby sellers, investors subtract cost basis and pay tax only on the actual gain. If you sell at a loss, you can deduct up to $3,000 in net capital losses per year against ordinary income ($1,500 if married filing separately), and carry the rest forward.9Office of the Law Revision Counsel. 26 U.S. Code 1211 – Limitation on Capital Losses
The 1099-K and Reconciling It to Real Income
TCGplayer is required to send you Form 1099-K if your gross payments through the platform exceed $20,000 and you completed more than 200 transactions in a calendar year. The One Big Beautiful Bill permanently reinstated this threshold after earlier attempts to lower it to $600.10Internal Revenue Service. IRS Issues FAQs on Form 1099-K Threshold Under the One, Big, Beautiful Bill; Dollar Limit Reverts to $20,000
Both conditions must be met. Sales of $25,000 across 150 transactions? No federal 1099-K required. Some states set their own lower thresholds, so you may still receive one for state purposes.11Internal Revenue Service. Understanding Your Form 1099-K
Whether or not you get a 1099-K, you’re legally required to report all income. The form is an information document the IRS uses to match, not the threshold that makes income taxable.
The gross figure on the 1099-K will almost always exceed your real taxable income. It reports total payments before adjustments for platform fees, refunds, shipping charges collected, and sales tax TCGplayer collected on your behalf. The IRS acknowledges those items aren’t your income and expects you to back them out.12Internal Revenue Service. What to Do With Form 1099-K On Schedule C, enter the 1099-K gross as receipts, then deduct fees, refunds, and pass-through sales tax on the correct expense lines. Keep records that reconcile the difference, because if your reported gross is lower than the 1099-K without explanation, expect a notice.
Deductions That Cut a Business Seller’s Bill
Cost of Goods Sold
Your largest deduction is almost certainly what you paid for the cards you sold during the year. Cost basis includes purchase price plus preparation costs like grading fees. For high-value singles, Specific Identification (tracking the exact cost of each card and matching it to its sale) works best. For bulk, First-In, First-Out is a common alternative. Either way, you need documentation: purchase receipts, bank statements, or marketplace order history. Without proof of what you paid, the IRS can disallow the entire COGS deduction and tax you on gross receipts.
Operating Expenses
TCGplayer commission and payment processing fees are fully deductible on Schedule C, as are shipping supplies (postage, mailers, toploaders, labels), inventory management software, and accounting or tax prep fees. Track anything you pay outside the platform in a separate account so it’s easy to pull together at filing time.
Home Office
If you use a dedicated area of your home exclusively and regularly as the principal place of business for your card sales, you can claim the home office deduction. The simplified method allows $5 per square foot up to 300 square feet, capping the deduction at $1,500.13Internal Revenue Service. Simplified Option for Home Office Deduction The regular method deducts a percentage of actual home expenses based on square footage. The space has to be used only for business. A kitchen table where you also eat dinner doesn’t qualify.
Estimated Quarterly Payments
TCGplayer doesn’t withhold income tax or self-employment tax from your payouts. If you expect to owe $1,000 or more in federal tax for the year after any withholding from other jobs, you’re required to make estimated quarterly payments.14Internal Revenue Service. 2026 Form 1040-ES Estimated Tax for Individuals
For the 2026 tax year, the due dates are:
- First quarter: April 15, 2026
- Second quarter: June 15, 2026
- Third quarter: September 15, 2026
- Fourth quarter: January 15, 2027
You avoid an underpayment penalty by meeting one of two safe harbors: pay at least 90% of your current year’s tax, or pay 100% of last year’s tax (110% if your adjusted gross income exceeded $150,000). Many sellers use the prior-year safe harbor because it’s easier to plan around.16Internal Revenue Service. Instructions for Form 2210 – Underpayment of Estimated Tax by Individuals, Estates, and Trusts
Sales Tax: TCGplayer Handles It, With One Exception
TCGplayer operates as a marketplace facilitator. It calculates sales tax on the buyer’s shipping address, collects it at checkout, and remits it to state and local authorities. The platform currently collects on transactions in all 46 states that impose sales tax.17TCGplayer. How Do Sales and Income Tax Work for Sellers on TCGplayer For sales made through TCGplayer, you generally don’t need a sales tax permit, don’t file sales tax returns, and don’t calculate rates.
That relief ends the moment you sell outside the platform. If you also sell through your own website, at local shows, or on a site that isn’t a marketplace facilitator, you may need to register with individual states, collect the tax yourself, and file returns. Most states set economic nexus at $100,000 in sales into the state, though rules vary.
One bookkeeping note: sales tax TCGplayer collected from buyers appears in your 1099-K gross, but it was never your money. Subtract it when entering gross receipts on Schedule C so you’re not paying income tax on pass-through tax.
Records and Penalties
Keep purchase receipts for every card or lot, sales records from TCGplayer, shipping receipts, platform fee statements, and any other business expenses. The IRS generally expects you to hold records for at least three years after filing.18Internal Revenue Service. How Long Should I Keep Records For inventory, keep purchase records for at least three years after filing the return for the year you actually sold those cards. Buy in 2026, sell in 2028, and you need the 2026 receipts until at least 2032.
Ignoring the filing obligation is expensive. The failure-to-file penalty is 5% of unpaid tax per month (or partial month), up to 25%. A separate failure-to-pay penalty of 0.5% per month runs alongside it until failure-to-file caps out at five months, then continues on its own. If a return is more than 60 days late, the minimum penalty is a specified dollar amount or 100% of the unpaid tax, whichever is less.19Internal Revenue Service. Failure to File Penalty
The IRS matches 1099-K forms to returns. If TCGplayer reports $25,000 in payments and nothing shows up on your return, expect an automated notice. Filing late with the right numbers is always better than not filing.