If you sell cards for more than you paid for them, the profit is generally taxable. The important word is profit. A 1099-K reports the gross amount that flowed through a payment platform, not what you made, and the gap between those two numbers is entirely your responsibility to document. That is the whole reason recordkeeping matters here.
The second thing to understand is that how you are taxed depends on what you are — a hobbyist, a collector holding for appreciation, or a business. Those are three different treatments with different rules, and the IRS looks at your actual behavior rather than what you call yourself.
This is a plain-English explanation of the mechanics so you can have a competent conversation with a tax preparer. It is not tax advice, and a preparer who knows your full situation is worth the fee, especially the first year.
What a 1099-K actually reports
Payment platforms — eBay, PayPal, Whatnot, and similar — issue a Form 1099-K to you and to the IRS when your payment volume crosses a reporting threshold. The threshold has changed repeatedly in recent years and differs in some states, so check the current one for the tax year you are filing. The live answer is on the IRS’s 1099-K page and in the tax-documents section of the platform you sold on — the platform’s stated threshold is what decides whether a form gets generated. Lower state thresholds are on your state revenue site.
Here is the part that catches people. The number on that form is gross payments. It typically includes:
- The full sale price of every item
- Shipping the buyer paid you
- Sales tax collected in some reporting setups
- Amounts you later refunded
- Amounts the platform deducted as fees before you saw a dollar
So a seller who moved $12,000 through a platform, paid $1,500 in fees, $900 in shipping, issued $400 in refunds, and originally paid $8,000 for the cards did not make $12,000. But $12,000 is the number the IRS received. Your records are what turn that into the real figure.
Getting a 1099-K does not by itself mean you owe tax. Not getting one does not mean you do not. Income is reportable whether or not a form was generated.
Hobby, investor, or business
These are treated differently, and the difference is significant.
| Hobby | Investor / collector | Business | |
|---|---|---|---|
| What it looks like | Selling off cards you collected, occasional sales, no profit motive | Buying cards to hold and sell later at a gain | Regular, continuous buying and selling to make money |
| Income treated as | Other income | Capital gains | Business income |
| Can deduct expenses? | Very limited — hobby loss rules restrict this sharply | Basis and selling costs offset the gain | Yes — ordinary and necessary business expenses |
| Self-employment tax? | No | No | Yes, on net profit |
| Can deduct a loss? | No | Capital loss rules apply, with limits | Yes, subject to rules on repeated losses |
The trade-off is real: business treatment lets you deduct supplies, grading fees, show table costs, mileage, and shipping, but it also brings self-employment tax on the net profit. Which category you fall into is a facts-and-circumstances question — frequency, continuity, how businesslike your records are, whether you depend on the income. Do not pick the one that sounds better; describe your actual activity to a preparer and let them classify it. Confirm the current self-employment rate and hobby-loss rules in the IRS instructions for Schedule C and Schedule 1. Guessing here is one of the pricier beginner mistakes.
Cost basis: the number that saves you money
Basis is what the card cost you. Gain is sale price minus basis minus selling costs. If you cannot document basis, the IRS position is effectively that your basis is zero, which means the entire sale price is gain. That is the expensive outcome, and it happens to people who sold for years without keeping receipts.
Basis generally includes:
- What you paid for the card, or the allocated cost if it came in a lot or a box
- Grading fees and the shipping to and from the grader
- Sales tax you paid on the purchase
- Shipping you paid to acquire it
Selling costs — platform fees, shipping to the buyer, supplies, payment processing — reduce the gain as well, though where they go on the return depends on your classification. A consignor’s cut is a selling cost too — keep the statements, since the way a consignment split is calculated sets what you can deduct.
Cards that came out of a pack or box
If you paid for a box and pulled ten cards, the cost of the box is spread across what came out of it. There are reasonable allocation methods, and consistency matters more than perfection. Write down which method you used and use the same one every year.
Inherited cards
Inherited property generally gets its basis reset to the fair market value at the date of the previous owner’s death, rather than what they originally paid. That is often a very large difference for a collection built decades ago, and it can turn what looks like an enormous gain into a modest one. It also means the collection should be valued at that date, ideally with documentation — a good reason to confirm the big cards are genuine first, since a counterfeit valued as real distorts the estimate. Ask a preparer how the step-up applies to collectibles for the year of death; that detail sets your number.
Gifted cards
Gifts generally carry over the giver’s original basis rather than getting a reset. This is the opposite of inheritance and surprises people.
The collectibles rate
Cards are generally treated as collectibles for capital gains purposes, and long-term gains on collectibles are taxed at a maximum rate that is higher than the rate on long-term stock gains. Short-term gains — assets held one year or less — are taxed as ordinary income. This matters if you flip quickly. The maximum collectibles rate and the exact holding-period cutoff are in the IRS instructions for Schedule D — look them up for your filing year.
What to track, starting now
A spreadsheet is enough. These columns cover almost everything a preparer will ask for:
- Date acquired and date sold — the holding period depends on these
- Card description — year, set, player, number, grade, cert number
- Purchase price and where you bought it
- Added costs — grading, inbound shipping, supplies attributable to that card
- Sale price and platform
- Platform fees and outbound shipping
- Refunds or returns
Alongside it, keep the yearly transaction reports every platform lets you download, plus bank and payment-processor statements. Download them in January for the prior year — platforms do not keep detailed history forever, and reconstructing three years of sales from memory is miserable.
Also track the expenses that are not card-specific if you are operating as a business: show table fees, travel and mileage to shows, supplies bought in bulk, subscriptions to pricing tools, shipping materials. These are ordinary costs of the activity and they are frequently left on the table.
Where you buy matters too: an invoice is basis documentation you never have to reconstruct. A distributor, a manufacturer account, or a dealer wholesale program like ours all generate one; cash at a show does not, so write those buys down.
Common mistakes
- Reporting the 1099-K gross as income. It is a starting point, not the answer. Reconcile it down to actual net with your records.
- Ignoring a 1099-K because “it was just my old collection.” The IRS received a copy. Unreported forms generate notices. Report it and show the basis.
- No basis documentation. Start keeping receipts today even if the past is a mess. Partial records beat none.
- Assuming a loss offsets other income. Hobby losses generally do not, and capital losses are subject to annual limits.
- Forgetting state tax. States have their own rules, and some have lower 1099-K thresholds than the federal one.
- Mixing personal and selling money in one account. Open a separate account for card activity. It costs nothing and it makes the whole exercise tractable.
What to do next
Do two things this week. First, download your full transaction history from every platform you sold on this year. Second, start the spreadsheet — even if the only rows in it are sales from here forward. The people who get hurt at tax time are not the ones who made a lot of money. They are the ones who cannot prove what they paid.
Selling the whole collection at once? Those records do double duty — read up on how a collection sale gets handled first.
Then find a preparer who has handled collectibles or resale clients before, and bring them the spreadsheet rather than a shoebox. The classification question — hobby, investor, or business — is worth getting right in year one, because changing it later invites questions.
Common questions
Do I owe tax if I sold cards for less than I paid?
If you genuinely sold at a loss, there is no gain to tax. Whether you can deduct that loss depends on your classification: hobby losses generally are not deductible, while investor and business losses have their own rules and limits.
I got a 1099-K but I was just cleaning out my closet. What do I do?
Do not ignore it. Report the transactions and document your basis so only the actual gain, if any, is taxed. Personal items sold at a loss are handled differently from items sold at a gain, so bring the form to a preparer.
How do I figure basis for cards I bought thirty years ago?
Reconstruct what you reasonably can — pack prices from the era, receipts, catalog records — and document your method in writing. If the cards were inherited rather than bought, the stepped-up basis rules likely apply instead, which is usually far more favorable.
Do I need to charge sales tax when I sell?
On major marketplaces, the platform generally collects and remits sales tax for you under marketplace facilitator rules. Selling directly — at a show, or person to person — can create your own obligation depending on your state. Search your state revenue site for “occasional sale” and for its registration threshold; those two pages answer it.
