Your 1099-DA arrived. Now prove what you actually owe.
Brokers report what you sold for. They rarely know what you paid. We work with US crypto investors to reconstruct cost basis, reconcile every Form 1099-DA against real wallet and exchange history, and file a Form 8949 position that survives IRS matching. Tell us what you traded and where, and we'll map the fastest route to a defensible return.
// 1099-DA & COST BASIS SPECIALISTS
CountDeFi.
Leaders in 1099-DA reconciliation and cost basis reconstruction.
CountDeFi provides specialised tax accounting for US crypto investors dealing with broker-reported digital asset activity. We're not just CPAs, we're data scientists who rebuild your full acquisition history across exchanges, self-custody wallets, and on-chain protocols, then reconcile it line by line against the forms your brokers sent the IRS.
If your 1099-DA shows zero basis, if you moved assets between platforms, or if you're holding forms from three exchanges that don't agree with each other, CountDeFi can help with affordable plans.
We operate online and in your timezone.
Proceeds minus nothing equals a 100% gain
For the 2025 tax year, brokers were required to report gross proceeds and nothing else. If you bought SOL in 2021, held it in cold storage, then moved it to an exchange and sold, that exchange never saw the purchase. Your form shows the full sale price against zero basis. The IRS sees pure profit. You see a tax bill on money you never made.
The matching trap that starts the notice
The IRS holds a copy of every 1099-DA issued to you, and its automated systems compare those proceeds against your Form 8949. Mismatches don't need to involve any error on your part. Wrapping, lending, staking and stablecoin transactions sit outside the form. DeFi never appears at all. Your software totals and the broker's totals can both be right, and the gap between them still triggers a CP2000.
The relief window closes on 31 December 2026
Notice 2026-20 lets you identify which units you sold using your own records while brokers finish building the systems to accept those instructions. That relief ends with the 2026 tax year. From 1 January 2027, identification has to be communicated to the broker, or FIFO applies by default and takes your lot selection with it. The work you do on your records this year decides what you're allowed to claim next year.
// who we are
"A 1099-DA tells the IRS what left your account. It does not tell them what it cost you. Our job is to rebuild the half of the picture the broker never had."
Chris Herbst
Founder
// 1099-DA TAX EXPERTS
Defensible cost basis calculations when your 1099-DA disagrees with reality
Broker reporting was meant to make crypto filing simpler. In its first two years it has done close to the opposite. We've been reconstructing complex trading and on-chain activity since 2017, and this filing season we've handled everything from a single delayed Coinbase form to investors reconciling twenty thousand transactions across eight platforms. The problem isn't the IRS tax rate. It's that basis doesn't travel. Transfer statements between brokers, the mechanism that keeps this straight for stocks, were postponed under the final regulations and still don't exist for digital assets. So the moment an asset moves off the platform where you bought it, the acquisition trail breaks.
Cost basis reporting starts with 2026 transactions, but only for covered assets: crypto acquired on or after 1 January 2026 and sold through the same broker that holds it. Everything bought before that date, and everything transferred in, stays noncovered indefinitely. That leaves most investors carrying the burden of proof. Not for one tax year, but for as long as they hold assets acquired before the covered-asset window opened. CountDeFi rebuilds incomplete acquisition histories, traces assets across wallets and exchanges, allocates basis under the Revenue Procedure 2024-28 safe harbour where it applies, and produces a Form 8949 you can support with documentation.
Getting your IRS 1099-DA sorted properly doesn't have to cost a fortune. At CountDeFi we don't bill by the hour. Our pricing scales with transaction volume and complexity, and every plan includes software fees, transaction reconciliation, and a complete tax report.
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Clients Worldwide
Crypto Tax Reports Completed
Crypto Transactions Reconciled
// services
Our prediction markets accounting services
Form 1099-DA reconciliation
Every form you received, matched against your own transaction records, with each difference identified and explained before it reaches the IRS matching system.
Form 8949 and Schedule D preparation
Correct checkbox treatment for proceeds reported without basis, adjustment codes where the broker figure needs correcting, and totals that tie to Schedule D.
Multi-exchange consolidation
Three exchanges means three forms, and none of them can see the others. We bring the whole picture into one reporting position.
CP2000 and IRS notice support
If a mismatch has already produced a notice, we assemble the records and calculations needed to answer it properly.
Cost basis reconstruction
Acquisition history rebuilt from exchange exports, wallet records, and on-chain data, so transferred and pre-2026 assets carry real basis instead of a zero.
Covered vs noncovered asset mapping
A clear split between assets your broker will report basis for and assets you remain responsible for, so you know exactly where the burden of proof sits.
Self-custody and DeFi gap reporting
Decentralised platforms don't issue 1099-DAs and never will after the 2025 repeal. The activity is still taxable. We capture what the forms leave out.
Prior year cleanup
Broker reporting gives the IRS a view of activity that was invisible before. Coming forward voluntarily with accurate numbers is a stronger position than waiting.
// EXPERT SKILLS
Why US crypto investors hire CountDeFi for 1099-DA corrections
Most people who come to us this year arrive with the same two problems. The first is data. A form arrives showing hundreds of thousands in proceeds and a basis column full of blanks, and the records needed to fill it sit scattered across old exchange accounts, hardware wallets, and chains they stopped using in 2022. Some of those platforms no longer exist.
The second is what happens next. Missing basis on a 1099-DA does not make a sale fully taxable, and you don't need the exchange to correct anything before you file. You are expected to report your own figure. But "expected to" only helps if you can produce the working behind it. We reconstruct the history, calculate the basis, and document the method, so the number on your return is one you can stand behind if the IRS asks how you got there.
// TAILORED PRECISION
Why tax software struggles with Form 1099-DA
Tax software is a good starting point. It handles clean, single-platform histories well. What it doesn't do is reconcile in two directions at once: matching the proceeds your broker reported while also capturing everything the form excluded. Import a 1099-DA showing zero basis and most tools will tax the full proceeds. We've caught clients this season who were on track to overpay by tens of thousands because nobody questioned the import. That's where CountDeFi comes in. We rebuild the data, review the activity, and set a reporting position you can defend.
CountDeFi is Koinly's #1 Global Partner and we use Koinly's calculation engine as part of our workflow. If you already have a Koinly portfolio, we can work directly from it.
// WORK WITH US
How to work with CountDeFi to calculate your
Polymarket taxes
At CountDeFi we use our proprietary Precision 7 System to take you from data chaos to crypto tax clarity. We ingest data from exchanges, wallets, and DeFi protocols, identify what's missing, reconcile it against every broker form you received, and prepare a complete filing position. Where records are incomplete, we investigate. Where the broker figure is wrong, we correct it on the return and document why. It starts with a free 15-minute consultation to discuss your activity and recommend the right pricing plan. We work remotely with clients across the US and globally. Book an obligation-free call today.
It starts with a free 15-minute consultation to discuss your trading activity and recommend the right pricing plan for your needs. We work remotely with clients across the US and globally. Book an obligation-free call today.
// FIVE STAR Global REVIEWS
What our clients say
Margaret
This company took the stress out of dealing with the IRS when it came to my Crypto account. They met over a video call the first day after I contacted them, set up a plan and by the end of a week, I had all the necessary documents to clear up my tax returns. Along the way they sent emails updating me as to the progress.
US
Anon
I tried CountDeFi to navigate the chaotic mess of tracking my crypto transactions, gains, and losses. Initially skeptical, CountDefi came through. I found other crypto calculators lacking in complete blockchain analysis, but CountDeFi effectively traced my complex crypto journey and ultimately systematized order from disorder. Massive weight off my shoulders! The result was well worth the cost.
US
Scott
Most of the regular CPA's in my area had no knowledge of how to report crypto tax. With the help of Bianca and the team at Count DeFi, we were able to do a deep dive into my entire transaction history from Day 1 and compile accurate tax reports based off of my entire transaction history across all exchanges and wallets.
US
