Mark-to-market accounting lets you report gains and losses based on year-end market value, not actual sales.

But it’s only available to dealers and certain traders who make an irrevocable election. Most NFT investors don’t qualify and must use realization accounting (report gains only when you sell).

What Mark-to-Market Means

Under mark-to-market (MTM), you value your NFT holdings at fair market value on December 31 and recognize gain or loss as if you sold everything at year-end prices.

You hold 10 NFTs with $100,000 total cost basis. On Dec 31, they’re worth $150,000.

Mark-to-market: Report $50,000 gain, even though you didn’t sell. Next year, your new basis is $150,000.

Realization (normal investors): Report $0 gain. No sale happened. When you eventually sell, you’ll report gain/loss then.

Who Qualifies as a Dealer

A dealer is someone who buys and sells NFTs regularly as a business, with the intent to profit from frequent transactions—not from appreciation.

Dealer characteristics:

  • Buying NFTs to resell quickly (days/weeks, not years)
  • Frequent, regular purchases and sales
  • Trading is your primary source of income
  • You hold minimal long-term positions
  • You have a business entity for trading

Investor characteristics:

  • Buying to hold for appreciation
  • Infrequent sales
  • Trading is not your job
  • You hold many positions long-term

Most people are investors, even if they trade frequently.

The Mark-to-Market Election

If you qualify as a dealer (or trader in securities—harder for NFTs), you can elect MTM by filing an intent statement with your tax return.

The election is irrevocable unless you get IRS permission to change.

Once you elect MTM:

  • All gains and losses are ordinary income (no capital gains treatment)
  • You recognize gains/losses annually, even without selling
  • You can’t switch back without IRS approval

Why Dealers Choose MTM

MTM avoids wash sale rule complications (though NFTs don’t have wash sales currently, this matters for securities).

It also means losses are fully deductible as ordinary losses, not subject to the $3,000 capital loss limit.

You have a $200,000 loss year trading NFTs. You’re a dealer with MTM.

  • Ordinary loss: $200,000 fully deductible against other income
  • Reduces taxable income by $200,000 immediately

As an investor, you’d be limited to $3,000 loss per year, with $197,000 carrying forward.

Downsides of MTM

No long-term capital gains: Everything is ordinary income. Your big winner held 2 years? Taxed at 35%, not 15%.

Phantom tax: You owe tax on Dec 31 valuations even if you haven’t sold. If you can’t liquidate the NFTs to pay tax, you have a cash flow problem.

Irrevocable: You can’t switch back when it’s no longer beneficial.

Example: You elected MTM in 2023 when trading heavily. In 2024, you shift to long-term holding. Too bad—you’re still on MTM, marking to market every year and losing long-term capital gains treatment.

Most NFT Traders Are Investors

The IRS presumes you’re an investor unless you prove dealer status.

Even if you flip 100 NFTs per year, you’re likely still an investor under tax law unless:

  • It’s your full-time job
  • You’re operating as a business (registered entity, business bank account)
  • You hold inventory for resale, not appreciation

If you’re a software engineer who flips NFTs on the side, you’re an investor—even if you made $500,000 flipping.

Action Step

Don’t elect mark-to-market unless you’ve consulted a tax professional and confirmed you qualify as a dealer or trader.

The election has major consequences:

  • All gains become ordinary income (higher tax)
  • You can’t switch back easily
  • You owe tax on unrealized gains each year

For most NFT holders, realization accounting (report gains when you sell) is simpler and more tax-efficient.

If you’re genuinely running an NFT trading business full-time with frequent transactions and minimal long-term holds, MTM might make sense—but get professional advice first.

Mark-to-market isn’t something you casually choose. It’s a binding election that fundamentally changes how you’re taxed. Most investors don’t qualify, and even those who do should carefully weigh the trade-offs.