Future of Crypto Tax in 2027: The IRS Gets Your 1099-DA in February — 5 Dates That Decide What You Owe

Your exchange is about to hand the IRS both sides of your crypto gains — for the first time ever. In February 2027, Form 1099-DA arrives with your cost basis filled in, and from January 1, 2027, a missing tax ID can trigger 24% backup withholding on your sales. Add a wash-sale bill in Congress that could reach back to September 2026, and a global reporting net that starts sharing your foreign-exchange trades in 2027, and the message is simple: the era of crypto tax being something you could figure out later is over. This guide lays out the five dates that decide what you owe in 2027, the traps that catch even careful holders, and the checklist to run before December 31.

That is the core shift. The IRS is moving from asking you what you earned to already knowing — and checking your return against what it was told.

What Actually Changed: Crypto Tax Went From Honor System to Reported

For a decade, crypto tax in the United States ran largely on the honor system. The IRS has always treated cryptocurrency as property — selling, swapping or spending it is a taxable disposal, while buying and holding is not — but until recently your exchange did not tell the IRS what you sold. That changed with the Infrastructure Investment and Jobs Act of 2021, which pulled digital assets into the broker-reporting rules, and Treasury's final regulations of July 9, 2024, which built the machinery.

The rollout has been deliberately phased, and 2027 is the year the phases collide. For sales in 2025, brokers reported gross proceeds only — the money you received, with no word on what you paid. For sales in 2026, brokers must also report cost basis, but only for "covered" assets: coins you bought on or after January 1, 2026, in a custodial account, and kept in that same account until the broker sold them. Those forms land in your inbox in early 2027, and the IRS gets a copy of each one. From January 1, 2027, the relief that shielded brokers from backup withholding expires: if your broker lacks a certified taxpayer identification number for you, it must withhold 24% of your proceeds.

If you are still fuzzy on the basics — what counts as a disposal, how gains are calculated — start with our beginner's guide to how cryptocurrency works and the ADAPT Act explainer, which covers the 2026 US tax law changes in detail. The rest of this article is about what happens next.

The 5 Dates That Decide Your 2027 Crypto Tax Bill

1. January 1, 2027 — 24% Backup Withholding Begins

IRS Notices 2024-56 and 2025-33 gave brokers penalty relief and waived backup withholding on digital-asset transactions for 2025 and 2026, provided they were making good-faith efforts to comply. That waiver ends on January 1, 2027. From that date, a broker that does not have your certified taxpayer identification information must apply 24% backup withholding to your digital-asset proceeds. The fix is boring and free: make sure every exchange you use has your correct Social Security number or TIN on file, with the name matching your tax return exactly. A mismatch is the most common trigger, and it is entirely avoidable.

2. February 15, 2027 — Your First Full 1099-DA Arrives

Brokers must furnish your copy of Form 1099-DA by February 15 of the year after the sale (moved to the next business day when that date falls on a weekend or holiday). The forms arriving in February 2027 cover your 2026 sales — and for the first time, they carry cost basis for covered assets. OKX says its 2026 forms will be available by February 16, 2027. When yours arrives, check three things: that every sale listed is actually yours, that the cost basis box (Box 1g) is filled for coins you bought on that exchange in 2026, and that nothing is missing for coins you transferred in from elsewhere. A blank basis box does not mean zero basis — it means the broker does not know, and the burden of proving what you paid stays with you.

3. April 15, 2027 — Tax Day for 2026 Returns

Your 2026 federal return — Form 1040 with its digital-asset question, Form 8949 listing each sale, trade and spend, and Schedule D totaling the results — is due April 15, 2027. An extension moves the filing deadline to October 15, 2027, but it does not move the payment deadline: tax owed is still due April 15. The 2026 long-term capital gains rates are 0%, 15% or 20% depending on income, with the 0% rate applying up to $49,450 of taxable income for single filers and $98,900 for married couples filing jointly. Short-term gains — crypto held one year or less — are taxed at ordinary income rates of 10% to 37%.

4. 2027 — CARF Goes Live Worldwide

The OECD's Crypto-Asset Reporting Framework (CARF) begins rolling out globally in 2027. Participating jurisdictions require crypto exchanges to collect full KYC information, identify users' tax residency, record tax identification numbers, and report all transactions to the user's home country. Unlike traditional financial reporting, CARF includes no minimum thresholds — exchanges must report every sale, swap and transfer, even small movements between wallets. The EU's DAC8 directive and the UK's CARF rules already took effect on January 1, 2026, so platforms are collecting 2026 transaction data now and will report it to tax authorities in 2027.

5. September 14, 2026 (Retroactive?) — The Wash-Sale Bill's Reach-Back Date

This is the date that could surprise the most people. The wash-sale rule — the stock-market rule that disallows a loss when you sell and buy back substantially identical securities within 30 days — does not currently apply to crypto you hold directly, because section 1091 of the tax code covers stocks and securities and the IRS has never extended it to digital assets. That loophole has made crypto tax-loss harvesting unusually generous: you can sell a losing position, buy it straight back, and still claim the loss.

Congress may close it. H.R. 10357, the Digital Asset Tax Certainty Act, advanced in committee on September 16, 2026, and would apply the wash-sale rule to any traded digital asset other than a qualified US dollar stablecoin. The committee's amended text applies the change to sales after September 14, 2026 — the day the bill was introduced. If it passes in that form, a loss harvested and bought back since mid-September could be disallowed retroactively, possibly after you have already filed.

Date	What happens	Who it hits
Jan 1, 2027	24% backup withholding if your broker lacks a certified TIN	Anyone with incomplete tax info on an exchange
Feb 15, 2027	First 1099-DA with cost basis for covered assets arrives	US users of custodial exchanges
Apr 15, 2027	2026 tax returns due (extension to Oct 15 for filing only)	Every US crypto holder with 2026 disposals
2027	CARF global reporting begins; EU/UK report 2026 data	Anyone using foreign exchanges
Sep 14, 2026*	Wash-sale bill's proposed reach-back date (if H.R. 10357 passes)	Loss harvesters who bought back within 30 days

*Proposed, not law — but the bill's text as amended in committee uses this date.

The Zero-Basis Trap: Why Your 1099-DA May Show a Gain You Never Made

The single most expensive misunderstanding in 2027 crypto tax is the blank basis box. For tax year 2025, every 1099-DA showed gross proceeds only — Coinbase, for example, marked every 2025 sale as noncovered. For 2026 sales, brokers report basis only for covered assets. Coins you bought before 2026, coins you transferred in from a self-custody wallet or another platform, and coins you moved between exchanges are noncovered: Box 1g arrives blank.

Blank does not mean your basis is zero. It means the broker does not know what you paid, and the IRS's matching system will still see the gross proceeds. If you report nothing — or if you report a gain calculated from a blank form — you risk a CP2000 notice proposing tax on the full proceeds as if you paid nothing for the coins. The defense is records: your own purchase history, wallet-by-wallet, is what proves your basis.

The December 2024 rule that would have treated many decentralized trading front ends as brokers was overturned by Congress under the Congressional Review Act — the House voted 292 to 132 on March 11, 2025, the Senate 70 to 28 on March 26, and the resolution became Public Law 119-5 on April 10, 2025. So DeFi trades from your own wallet generate no 1099-DA at all. That is not a free pass: the IRS's own FAQ is explicit that you report taxable sales whether or not anyone sends you a form.

What Most People Get Wrong About Crypto Tax in 2027

"I only owe tax if I cash out to dollars." Wrong. Swapping BTC for ETH, paying a merchant in crypto, or spending a stablecoin are all disposals. The IRS FAQ is explicit: exchanging virtual currency "for other property, including for goods or for another virtual currency" recognizes a gain or loss — even though no dollars appeared. Every coin-for-coin swap on an exchange is a taxable event.

"Stablecoins are tax-free because they stay at $1." Mostly wrong. Selling a stablecoin at $1 when you bought at $1 produces no gain, but the disposal still has to be reported, and a stablecoin that depegged — even briefly — can produce a gain or loss.

"The wash-sale rule doesn't apply to crypto, so I can harvest losses freely." True today, fragile tomorrow. The rule does not apply to coins you hold directly under current law — but H.R. 10357 would apply it retroactively to sales after September 14, 2026, and tokenized securities are already covered (Form 1099-DA even has a box, 1i, for wash-sale losses disallowed on them). If you harvested a loss and bought back within 30 days after mid-September 2026, keep the documentation and watch the bill.

"Moving crypto offshore hides it from the IRS." Wrong in 2027. CARF's rollout means foreign exchanges in participating jurisdictions report your transactions to your home tax authority, with no minimum threshold. The EU's DAC8 and the UK's CARF rules are already collecting 2026 data for reporting in 2027.

"If I don't get a form, I don't owe anything." Wrong. The IRS says so directly: no form is not no tax. Wallet swaps, DeFi trades and small rewards are taxable without any 1099, and the 1099-MISC threshold for staking and other rewards rose to $2,000 for 2026 (up from $600) — but the income is taxable whether or not a form is issued.

The 2027 Crypto Tax Checklist: 7 Moves Before the Deadlines Hit

Run this checklist before December 31, 2026, and again before you file.

1. Verify your TIN on every exchange. Log in to each custodial platform, confirm your Social Security number or TIN and legal name match your tax return exactly. This is the single cheapest way to avoid the 24% backup withholding that starts January 1, 2027.
2. Harvest losses carefully — and mind the 30-day window. Selling losers before December 31 puts the loss on your 2026 return, and losses offset gains dollar-for-dollar, with up to $3,000 a year deductible against ordinary income and the rest carried forward. But if you buy back the same coin within 30 days, assume H.R. 10357 could disallow the loss. How tax-loss harvesting works for crypto is worth reading before you sell anything.
3. Reconstruct your basis now, not in April. Gather purchase records for every coin you hold — especially pre-2026 purchases and coins transferred in from self-custody, which will arrive as noncovered with a blank basis box. Wallet-by-wallet records are what Revenue Procedure 2024-28 expects.
4. Export your full transaction history from every platform and wallet. Include DeFi trades, staking rewards, airdrops and NFT sales. Brokers report only what they see; the IRS expects everything. Staking and mining rewards are ordinary income at fair market value on the day you receive them.
5. Check your 1099-DA the day it arrives. When the February 2027 forms land, compare every line against your own records before filing. If a basis box is blank for a coin you bought on that exchange in 2026, or a sale is listed that was actually a transfer between your own wallets, raise it with the broker immediately — correcting it after a CP2000 notice arrives is slower and more expensive.
6. Decide your reporting method and stick to it. Whether you use FIFO, specific identification or another permitted method, apply it consistently across wallets and keep the records. Switching methods mid-stream is how mismatches happen.
7. Put April 15, 2027 in your calendar — and budget for the payment. An extension to October 15 covers filing, not payment. If you realized gains in 2026, set the cash aside now; penalties and interest start accruing after April 15 regardless of any extension.

If you hold crypto in a wallet rather than on an exchange, our beginner's guide to crypto wallets explains the self-custody side, and the complete stablecoin guide covers the dollar-pegged coins most people use to move in and out of positions — including how their tax treatment works.

What Happens Next: Three Scenarios for 2027

Bull case — orderly compliance. H.R. 10357 stalls, CARF rolls out without major enforcement actions, and the first full 1099-DA season runs smoothly. Exchanges' basis reporting improves, tax software reconciles most returns automatically, and crypto tax becomes as routine as stock tax.

Base case — a messy first year. The likeliest outcome. Millions of 1099-DAs arrive with blank basis boxes for pre-2026 holdings, the IRS's matching system flags thousands of mismatches, and a wave of CP2000 notices lands in the second half of 2027. The wash-sale bill passes in some form, catching late-2026 harvesters by surprise. Prepared holders are fine; unprepared ones pay penalties and professional fees.

Bear case — the retroactive trap snaps shut. H.R. 10357 passes with its September 14, 2026 reach-back intact, disallowing losses harvested in the final quarter of 2026 by anyone who bought back within 30 days. Backup withholding catches holders whose exchanges have stale or mismatched TINs. And the IRS, armed with its first complete year of basis data, starts auditing the gap between 1099-DA proceeds and reported gains.

None of these scenarios changes the underlying trend: crypto tax is becoming reported, verified and enforced, on a timetable set by law rather than by the market. The 2027 dates are fixed. The only variable is whether you are ready for them.

FAQs: Crypto Tax in 2027

When will I get my 1099-DA for 2026?

Brokers must furnish your copy by February 15, 2027 (the next business day if that falls on a weekend or holiday). Some platforms publish earlier — OKX says its 2026 forms will be available by February 16, 2027. The form covers your 2026 sales, and for the first time it includes cost basis for covered assets bought on that exchange on or after January 1, 2026.

Does the wash-sale rule apply to crypto in 2027?

Not under current law — section 1091 covers stocks and securities, and the IRS has not extended it to crypto held directly. But H.R. 10357, which advanced in committee in September 2026, would apply the rule to digital assets (except qualified US dollar stablecoins) for sales after September 14, 2026. Until it becomes law, harvesting losses and buying back quickly is legal — but the retroactive risk is real.

What is a "covered" asset on Form 1099-DA?

A coin you acquired in a custodial account on or after January 1, 2026, and kept in that same account until the broker sold it. Brokers must report cost basis for covered assets. Coins bought before 2026, or transferred in from your own wallet or another platform, are noncovered — the basis box arrives blank, and you must prove your basis with your own records.

What is the 24% backup withholding starting in 2027?

From January 1, 2027, brokers must withhold 24% of your digital-asset proceeds if they do not have your certified taxpayer identification information. Notices 2024-56 and 2025-33 waived backup withholding for 2025 and 2026 sales. Making sure your TIN and legal name are correct on every exchange is the fix.

Do foreign exchanges report my crypto to the IRS?

Increasingly, yes. The OECD's Crypto-Asset Reporting Framework (CARF) rolls out globally in 2027, requiring participating jurisdictions' exchanges to collect KYC and tax-residency data and share transactions with your home tax authority — with no minimum threshold. The EU's DAC8 and the UK's CARF rules took effect January 1, 2026, and 2026 data gets reported in 2027.

When are my 2026 crypto taxes due?

April 15, 2027 for your federal return (Form 1040, Form 8949, Schedule D). A filing extension runs to October 15, 2027, but any tax owed is still due April 15. Long-term gains are taxed at 0%, 15% or 20%; short-term gains at ordinary rates of 10% to 37%.

Conclusion: 2027 Is the Year Crypto Tax Grows Up

The story of crypto tax in 2027 is not a crackdown — it is a system arriving. Form 1099-DA with cost basis, 24% backup withholding, CARF's global reporting net, and a wash-sale bill that may reach back to September 2026 all point the same way: the IRS will know what you sold, what you paid, and whether your return matches. The holders who come out fine are the ones who treat the next two months as preparation time.

Bitcoin at $73,700 means a lot of portfolios carry losses right now, and losses are genuinely valuable — they offset gains and up to $3,000 of ordinary income a year. But only if they are claimed correctly, with records to back them up.

This article is educational only and is not tax, legal or financial advice. Crypto tax rules vary by country and change frequently — consult a qualified tax professional for your specific situation.