Form 1099-DA and DEX trading: why no form does not mean no tax

Form 1099-DA is filed by brokers that take possession of the digital assets being sold. DEX and self-custody trading generates no 1099-DA at all, because the regulations that would have required it were repealed in April 2025. Your obligation to report every disposal is unchanged. Only the paperwork is missing.

That gap is not in your favour. The most likely way a memecoin trader hears from the IRS in 2026 and 2027 is a notice generated by a form reporting what you sold without knowing what it cost you.

This article describes the position as of 31 August 2026, covering the 2025 tax year (first with gross proceeds reporting, filed earlier this year) and the 2026 tax year (first with basis reporting, filed in 2027). It is US-focused.

What Form 1099-DA actually reports, and from when

Form 1099-DA is the digital asset equivalent of the 1099-B stockbrokers have filed for decades. It arrived in two stages, and knowing which stage you are in explains most of the confusion.

So the forms that landed in early 2026 showed what you sold and what it sold for, with no basis at all. Forms for the 2026 tax year will carry basis, but only for assets the broker can track — units acquired in its own custody after the rules bit.

Who files. A broker here is an entity that takes possession of the assets being sold: custodial trading platforms, hosted wallet providers, crypto kiosks, and certain digital asset payment processors. Possession is the hinge. If a business held your tokens and executed a sale for you, it is in scope. If it never held them, it generally is not.

What is carved out. Notice 2024-57 exempts a list of transaction types until further guidance: wrapping and unwrapping, liquidity provider transactions, staking, lending, short sales, and notional principal contracts. These are exactly where basis is hardest, which is why they were deferred, and their absence from a form says nothing about taxability.

Transition relief. Notice 2024-56 gave brokers penalty relief for good-faith compliance in 2025. Notice 2025-33 went further: backup withholding is deferred until 1 January 2027, brokers may use uncertified TINs for pre-2026 accounts where verified through the IRS TIN Matching Program, and there is penalty relief under IRC 6651 and 6656 for withholding-timing gaps in crypto-for-crypto exchanges. The machinery is still being assembled, and forms issued during the transition are more likely to contain errors than a mature 1099-B.

DEX trading is not reported, and that is now structural

The IRS finalised a second set of rules — the "DeFi broker" regulations, T.D. 10021 — pulling front-end trading service providers into the broker definition. Under them, an interface routing a swap could have been required to file 1099-DAs for its users.

Those regulations were repealed by Congressional Review Act resolution H.J. Res. 25, signed 10 April 2025.

Two consequences follow, and the second is the one that gets missed.

First, no 1099-DA is issued for DEX trading. Swapping on a Solana aggregator, buying on a bonding curve, trading an EVM pool, moving through a self-custody wallet — none of it generates a third-party information return. If your year runs through buying memecoins on Solana from a wallet you control, the IRS receives nothing from anyone.

Second, a CRA repeal is not a temporary reprieve. When Congress disapproves a rule under the Congressional Review Act, the agency is barred from issuing a rule in substantially the same form without new legislation. Absent an act of Congress, DeFi front-end reporting is not coming back through a Treasury rulemaking.

The error that costs people money

Here is the sentence that does the damage: "There is no 1099-DA for DEX trading, so it is not taxed."

The information return and the tax liability are separate things. A 1099-DA reports a transaction that was already taxable; removing the report removes the report. Every token-to-token swap remains a disposal at fair market value, every disposal remains reportable on Form 8949 and Schedule D, and the obligation sits on you rather than on a platform. Whether you pay tax on memecoin-to-memecoin swaps sets out that analysis in full.

Be clear too about what the IRS can see without a form. Blockchains are public and permanently queryable, chain analytics is a mature industry with government customers, and every custodial on-ramp and off-ramp you use is identity-verified and reporting. The gap is in convenience, not visibility — and the digital asset question sits at the top of Form 1040, where a wrong answer is a signed statement rather than an oversight.

The trap: a form that reports proceeds without basis

This is the specific fact pattern most likely to produce a notice, and it is worth understanding before it happens rather than after.

Consider a normal year. You buy $20,000 of SOL on a custodial exchange and withdraw it to a self-custody wallet. You trade memecoins for eight months across hundreds of swaps, ending with $26,000 of SOL. You send it back to the exchange and sell for dollars.

The exchange files a 1099-DA reporting $26,000 of gross proceeds. It does not know your basis, because the SOL that arrived was acquired through a chain of swaps it cannot see. Unknown basis is not treated as a mystery to be resolved — it can default to zero.

The IRS matching system then compares $26,000 of reported proceeds against your return. If you reported correctly, your return shows gains and losses netting to something quite different and the numbers do not tie. If you did not report at all, the system sees $26,000 of unreported proceeds and treats it as a $26,000 gain.

That is a phantom gain. It is rebuttable — you are entitled to substantiate your actual basis — but the burden is yours, and you rebut it with records you either kept at the time or reconstruct painfully afterwards.

Three things make rebuttal much easier. Keep the withdrawal and deposit records that tie the exchange to the wallet, so the chain of custody is documented rather than asserted. Keep per-trade records with dollar values at the time of each swap — the part that cannot be recreated later from price history with any confidence on thin pairs. And confirm your basis tracking is per wallet and per account, mandatory since 1 January 2025 under Rev. Proc. 2024-28.

On that last point, a correction that matters in 2026: Rev. Proc. 2024-28's transitional safe harbor — the one that let taxpayers reasonably allocate unused basis across wallets — was a snapshot as of 1 January 2025, made on records in place by the filing of the 2025 return. The window has closed. It is not an election you can make now, it is a compliance state to check, and if your records do not reflect a per-wallet position as of that date the fix is a reconstruction with an accountant. Where crypto tax software breaks on memecoin data covers what that involves.

What to do when the form is wrong

Assume the 1099-DA you receive is inaccurate — during the transition described above, that is not remote.

Do not simply ignore it and file your own numbers with no explanation, because the matching system will flag the discrepancy. The conventional approach is to report the transaction as the broker reported it, then apply an adjustment on Form 8949 with the appropriate code showing the correct basis or proceeds, and keep the substantiation. Where the form is wrong on its face, the first step is a corrected form from the broker.

The mechanics depend on what is wrong and by how much, and this is where a crypto-literate CPA earns their fee. A mishandled adjustment invites the correspondence you were trying to avoid.

Where these rules come from

Outside the US

Form 1099-DA is a US instrument and nothing about its timeline transfers. What does transfer is the underlying obligation, because every one of the major jurisdictions taxes disposals on self-assessment regardless of what a platform files.

In the UK, disposals including token-to-token swaps are reportable for Capital Gains Tax through Self Assessment, which has carried a dedicated cryptoasset section since 2024/25. Canada treats disposals as barter transactions and puts the onus on the taxpayer, with the added question of whether frequent trading is business income rather than capital gain. Australia treats crypto-to-crypto as a CGT event. Germany taxes disposals inside the one-year holding period under §23 EStG. India goes further than reporting: 1% TDS is withheld at source under s.194S, so the deduction happens at the transaction rather than at year end, alongside the 30% flat rate under s.115BBH and no set-off of losses.

Check local requirements with a local adviser. The Canadian and Australian detail in particular is summarised here, not researched to the standard a return needs.

What this article does not tell you

It does not tell you whether a particular platform is a broker in scope. That turns on whether it takes possession, and some hybrid custodial-and-self-custody products are genuinely ambiguous. Ask the platform what it files.

It does not predict what a future Congress does; the CRA bar constrains Treasury, not Congress, and market structure bills could carry reporting provisions. And it does not cover a loss on a token you can no longer sell at all, which has its own strict rules in whether you can write off a worthless or rugged memecoin.

Frequently asked questions

Does the IRS know about my DEX trades?

There is no 1099-DA for them, but "no form" is not "no visibility". Blockchain data is public and permanent, chain analytics is widely used by tax authorities, and every custodial on-ramp and off-ramp you touch is identity-verified. Assume on-chain activity connected to a verified account is traceable.

Why does my 1099-DA show a huge gain I did not make?

Most likely because the broker reported gross proceeds without basis, and unknown basis can default to zero. If you deposited assets acquired elsewhere, the platform has no way to know what you paid. The gain is a reporting artefact, rebutted with your own records on Form 8949.

Will DeFi reporting come back?

Not through a Treasury rule in the same form. H.J. Res. 25 was a Congressional Review Act disapproval, which bars a substantially similar rule without new legislation. Congress could legislate reporting into existence, but as of 31 August 2026 nothing enacted restores it.

I trade only on DEXs and never cash out. Do I need to file anything?

Yes. Every swap is a taxable disposal regardless of whether dollars move, and Form 1040 asks a direct question about digital asset transactions that you answer under penalties of perjury. Not receiving a form removes the reminder, not the obligation.

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Records are easier to keep than to reconstruct

The hardest part of a memecoin tax year is proving what you paid for something eight months ago on a pair that no longer has a pool. Keeping a running record as you trade is the whole game, and so is buying fewer things you will later struggle to price — the Meme Central feed shows launches across five chains with a safety report on every token page, and where liquidity has been locked with Team Finance, the company that also builds Meme Central, the lock appears as a verified badge. It confirms the pool cannot be withdrawn. It does not make the token safe, and it does not produce a single line of your Form 8949.

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Nothing here is financial, legal or tax advice. Memecoins are extremely high-risk: most lose most of their value, and the majority of tokens launched never reach a decentralised exchange at all. Never spend money you cannot afford to lose entirely. Meme Central does not recommend any specific token. Data described as Meme Central's own reflects tokens indexed by Meme Central and is not whole-market data.

This article is general information about a fast-moving area of law and was last reviewed on 31 August 2026. It is not legal or tax advice, rules differ materially by jurisdiction, and your facts matter. Consult a qualified attorney or accountant before acting.