Cashing Out Crypto in 2026: The Tax Pitfalls to Avoid (and What to Do Instead)

A lot of people who bought crypto years ago are now sitting on real gains, and the question I hear most often is simple: "How do I cash out without getting crushed on taxes?"

The good news: with some planning, you can usually reduce the bill a lot. The bad news: most of the expensive mistakes happen before you sell, not when you file. Once the trade is done, the options shrink fast.

This guide walks through how crypto is taxed, the most common pitfalls I see, the strategies that actually work, and a FAQ at the end.

The basics: how crypto is taxed

The IRS treats crypto as property, not currency. That one rule drives almost everything else:

• Every disposal is a taxable event. Selling for dollars, swapping one coin for another, and paying for something with crypto all count.

• Your gain is what you received minus your cost basis (what you paid, plus fees).

• Holding period matters. Held one year or less: short-term gain, taxed at your ordinary income rate (up to 37% federal). Held more than one year: long-term gain, taxed at 0%, 15%, or 20% federal.

• Earning crypto (staking, mining, getting paid in it) is ordinary income at the value on the day you receive it. That value then becomes your basis.

2026 federal long-term capital gains brackets

• 0% rate: taxable income up to $49,450 (single) or $98,900 (married filing jointly)

• 15% rate: $49,451 to $545,500 (single) or $98,901 to $613,700 (married filing jointly)

• 20% rate: above $545,500 (single) or above $613,700 (married filing jointly)

These thresholds are based on total taxable income, including the gain itself. Higher earners also pay the 3.8% Net Investment Income Tax on investment income once modified AGI passes $200,000 (single) or $250,000 (married filing jointly).

And then there's California

California has no special rate for capital gains. Your crypto gain is taxed as ordinary income, at rates up to 13.3% for the highest earners. There is also no distinction between short-term and long-term. For a Californian, the combined federal and state rate on a large gain can easily land in the 30%+ range.

The 10 most common (and costly) pitfalls

1. Thinking only "cashing out to dollars" is taxable

Swapping Bitcoin for Ethereum, trading into a stablecoin, or buying something with crypto are all taxable disposals. Plenty of people have a tax bill from years of trading without ever moving a dollar to their bank account.

2. Trusting the 1099-DA blindly

Exchanges now send Form 1099-DA. For 2025 sales, brokers only had to report gross proceeds, not what you paid. Starting with 2026 sales, they report cost basis, but only for "covered" assets: coins bought on or after January 1, 2026 and kept at that same exchange until sold.

If you bought years ago, or moved coins in from another wallet or exchange, the form will likely show no cost basis. If you (or your software) don't fill it in, the IRS can treat the entire sale amount as profit. Reconciling the 1099-DA against your own records is now a must.

3. Selling a few days too early

The difference between holding 360 days and 366 days can mean going from your ordinary rate (say 32%) to 15% federal. Before you sell, check the purchase dates on the specific lots you're selling.

4. Ignoring the wallet-by-wallet rule

Since January 1, 2025, the IRS requires you to track cost basis separately for each wallet and exchange account. You can no longer pool all your coins together and pick the cheapest-looking basis from anywhere. If you want to sell specific high-basis lots (to lower your gain), you need to identify them properly at the time of the sale. The IRS has given temporary relief for broker-held coins through the end of 2026; after that, the rules get stricter.

5. One big sale in one big year

Cashing out everything in a single year can push you into higher federal brackets, trigger the 3.8% NIIT, and stack on top of your salary in California. It can also have side effects people don't expect: losing Covered California/ACA premium subsidies, or higher Medicare premiums a couple of years later if you're near retirement age.

6. Forgetting estimated taxes

No tax is withheld when you sell crypto. If you realize a big gain in March and wait until next April to pay, you can owe underpayment penalties on top of the tax. After a large sale, make an estimated payment for that quarter, both federal and California.

7. Moving out of California "right before" selling

Moving to Nevada or Texas before a big sale can work, but only if the move is real. The FTB looks closely at where you actually live: your home, family, driver's license, voter registration, where you spend your time. A move that looks like it was timed for the sale is a classic audit trigger. If you're considering this, plan it well ahead and talk to a professional first.

8. Missing staking and reward income

Staking rewards, airdrops, and interest from crypto platforms are taxable as ordinary income when you receive them, even if you never sell. Many people only find out when they reconcile years later.

9. Lost or incomplete records

If you can't prove your cost basis, the IRS can treat it as zero. That's the worst-case outcome. Exchange history exports, old bank statements, and crypto tax software (Koinly, CoinTracking, CoinLedger, etc.) can usually rebuild the picture, but it's much easier to do before you sell than during an audit.

10. Answering "No" to the digital asset question

Form 1040 asks every filer whether they received, sold, exchanged, or otherwise disposed of a digital asset. If you did, the answer is yes. With exchanges now reporting directly to the IRS, a "no" next to a stack of 1099-DAs is an easy mismatch for them to catch.

Strategies that actually reduce the bill

Hold for more than a year. The simplest and most powerful one. Long-term treatment can cut your federal rate roughly in half.

Spread the sale across tax years. Selling part in December and part in January splits the gain across two years, keeping more of it in lower brackets. The same logic works over three or four years for larger positions.

Use low-income years. If you're between jobs, on sabbatical, or recently retired, you may be able to realize long-term gains at the 0% federal rate (California will still tax it).

Pick your lots. Selling the coins you paid the most for (within the same wallet, identified properly) reduces the gain on the sale.

Harvest losses. Selling coins that are down lets you offset gains. Losses beyond your gains can offset up to $3,000 of ordinary income per year, with the rest carried forward.

Heads up on wash sales: Right now, the wash sale rule (no loss if you rebuy within 30 days) applies to stocks but not to crypto held directly. That may change. A House bill, the Digital Asset Tax Certainty Act (H.R. 10357), passed the Ways and Means Committee in September 2026 and would apply wash sale rules to crypto. It isn't law yet, but as written it could reach back to sales made after mid-September 2026. If you're harvesting losses now, plan conservatively.

Donate appreciated crypto. Giving long-term crypto directly to a charity (or a donor-advised fund) generally lets you deduct the full market value and never pay tax on the gain. For donations over $5,000 you'll need a qualified appraisal.

Make your estimated payments. Not a way to reduce tax, but it avoids adding penalties on top.

FAQ

Is moving crypto between my own wallets taxable?

No. Transferring between wallets or exchanges you own is not a sale. Keep records, though: the receiving exchange often doesn't know your original cost, which is how the "missing basis" problem starts.

I just bought crypto and haven't sold. Do I owe anything?

No. Buying and holding is not taxable. You do still answer "yes" to the digital asset question if you bought during the year.

I didn't get a 1099-DA. Do I still have to report?

Yes. The requirement to report comes from the sale, not the form. Foreign exchanges, DeFi platforms, and self-custody wallets often won't send one.

My 1099-DA shows a huge number. Do I owe tax on all of that?

Probably not. That number is usually gross proceeds (what you sold for), not your profit. You report your cost basis on Form 8949 to get to the actual gain.

Are stablecoins taxable?

Yes, technically. Swapping into or out of a stablecoin is a disposal. The gain on the stablecoin itself is usually tiny, but the swap from Bitcoin into the stablecoin is where the real gain is realized.

Is there a small-transaction exemption, like for buying coffee?

Not yet. Several proposals exist, and the current House bill includes a small exemption for network fees of $10 or less, but none of it is law as of this writing.

Does California tax crypto differently?

Yes: no lower rate for long-term gains. Everything is taxed as ordinary income at your California rate.

What if I didn't report crypto in past years?

Fix it before the IRS finds it. Amending prior returns proactively is almost always cheaper and less stressful than responding to a notice. With exchanges reporting directly to the IRS now, the odds of it being caught keep going up.

Can I gift crypto to family to avoid tax?

Gifting isn't a taxable sale for you, but the recipient generally takes over your cost basis, so the gain doesn't disappear; it moves to them. That can still make sense if they're in a lower bracket. Large gifts may require a gift tax return.

When should I talk to someone?

Before you sell. Once the trade is done, most of the planning options are gone.

Thinking about cashing out?

If you're planning a large crypto sale, a 30-minute planning call can often save many times its cost. We'll look at your holdings, holding periods, and income picture and map out the most tax-efficient way to get to cash, while staying fully compliant.

Schedule a consultation with Cardiff Tax

This article is for general information and reflects the rules as of September 2026. Tax law in this area is changing quickly, and it isn't advice for your specific situation.