1099-DA SEASON ACTIVE · 2025 forms carry no cost basis — the worst year for mismatches · 8 EVM chains scanned simultaneously · Bridge misclassifications flagged automatically · No client signup needed — paste a wallet, get results in 60 seconds · HyperEVM · Arbitrum · Base · Polygon · Optimism · BNB · Avalanche · Ethereum · Free for tax professionals — no account required · 1099-DA SEASON ACTIVE · 2025 forms carry no cost basis — the worst year for mismatches · 8 EVM chains scanned simultaneously · Bridge misclassifications flagged automatically · No client signup needed — paste a wallet, get results in 60 seconds · HyperEVM · Arbitrum · Base · Polygon · Optimism · BNB · Avalanche · Ethereum · Free for tax professionals — no account required · 
1099-DA Mismatch Analysis

Your client's
1099-DA is
probably wrong.

2025 is the worst possible year for 1099-DA mismatches: brokers are required to report gross proceeds only — cost basis is not included on any form issued this season. Every client with assets acquired outside the reporting broker is exposed. Paste their wallet address. We scan 10 chains in 60 seconds and tell you exactly where the gaps are — no client login, no software to install, nothing for them to do.

Run a Free Analysis →See how it works
Sample Analysis — 0x4f8a…c2d1
3 chains active
Critical
Phantom Gains — Transferred Cost Basis
14 ETH sold on Coinbase with $0 cost basis. Originated in cold wallet — never on broker's books.
High
Bridge Misclassified as Disposal
Arbitrum→Base transfer via Stargate reported as taxable sale. Non-taxable transfer.
High
Unreported Staking Rewards
$12,400 in Lido stETH rewards not on any 1099-DA. Fully taxable as ordinary income.
Medium
DeFi Protocol Activity
Uniswap, Curve, Aave interactions on 3 chains. No 1099 issued. Documentation required.
4 issues · 3 chains · 847 transactions analyzed
Built for professionals at
National CPA FirmsRegional Tax PracticesCrypto Tax SpecialistsRIAs & Wealth ManagersTax Attorneys
01 — THE PROBLEM

The 1099-DA reports
what the broker can see.

Brokers only see activity on their own platform. They have no visibility into bridging, cold wallet transfers, DeFi protocols, or cross-chain activity — which is where most of the tax exposure lives.

📄
What the 1099-DA shows
$0
Cost basis reported for assets that moved from an external wallet. Broker had no record of the original purchase.
🔍
What actually happened
$48k
Assets were purchased two years ago in a hardware wallet, bridged to Arbitrum, then deposited to the exchange — all invisible to the broker.
⚠
Phantom gain reported to IRS
$48k
Without documentation, the IRS sees a $48,000 gain. Your client faces a bill they don't owe — and an audit risk they didn't know existed.
Why 2025 is uniquely bad

This is the only year brokers report proceeds with no cost basis whatsoever.

For 2025 transactions, mandatory basis reporting does not apply. Every 1099-DA issued this season shows gross proceeds only — no acquisition date, no cost basis, no gain calculation. Assets acquired before January 1, 2026 are permanently grandfathered out of broker basis reporting. The structural mismatch problem is larger this filing season than it will ever be again.

"But the IRS isn't penalizing this year"

The IRS is collecting the data now. The notices come later.

Penalty relief applies to brokers who miss filing deadlines — not to taxpayers who underreport income. The IRS is ingesting 1099-DA data and building its matching database right now. CP2000 underreporting notices arrive 12–18 months after filing. The time to establish documentation is before your client signs the return, not after the notice arrives.

8+
EVM blockchains scanned
simultaneously per wallet
200+
DeFi contracts, bridges &
protocols identified by name
12
Distinct mismatch types
flagged with documentation guidance
$0
Cost to run an analysis.
No account or login required.
02 — HOW IT WORKS

Three steps.
Under sixty seconds.

Paste a wallet address. We do the rest. No software to install, no account to create, no data retained.

STEP 01

Enter any wallet address

Paste your client's Ethereum, Bitcoin, or Solana address. Any EVM wallet address works across all 8 chains — you don't need a separate address per chain.

STEP 02

We scan all chains simultaneously

Our engine queries all supported blockchains in parallel, identifies every transaction type, and cross-references against 200+ known protocol and bridge addresses.

ETHARBBASEPOLYGONOPTIMISMBNBAVAXHYPEBTCSOL
STEP 03

Get a step-by-step remediation checklist for every issue

Each finding includes the specific transactions involved, a 5-step remediation checklist written for tax practitioners, and a downloadable PDF report formatted for your client file.

03 — HOW WE'RE DIFFERENT

Every other tool asks
your client to do the work.

Koinly, CoinLedger, Summ, ZenLedger — all built for the same workflow: client creates an account, imports their own wallets, hands the report to their CPA. FormTrace is the inverse.

Every other crypto tax tool
✕

Client must create an account on a third-party platform

✕

Client imports their own wallets and exchanges — often incomplete

✕

CPA waits for client to share access or export a report

✕

Optimized for the investor filing their own return, not for professional review

FormTrace
✓

No client action required. The CPA pastes a wallet address and gets results in 60 seconds

✓

Read-only blockchain analysis — no accounts, no API keys from the client

✓

Run it before the client meeting — surface issues before they become surprises

✓

Built specifically for the practitioner workflow, not the retail investor

✓

Download a PDF workpaper report — formatted for the client file, with findings, evidence, and 5-step remediation checklists

04 — WHAT WE FLAG

Every mismatch type
the 1099-DA misses.

These are the scenarios brokers structurally cannot report correctly — and the ones most likely to generate IRS notices.

Critical
Phantom Gains from Transferred Cost Basis
Assets purchased in a non-custodial wallet and later deposited to an exchange. The broker sees a disposal with $0 cost basis. FormTrace surfaces the gap and provides a 5-step checklist for documenting the full transfer chain and correcting Form 8949.
ALL CHAINS
High
Cross-Chain Bridge Misclassified as Disposal
Bridging ETH from Ethereum to Arbitrum via Stargate, Hop, or Across is a non-taxable transfer. Brokers often report these as sales. FormTrace identifies both legs of the bridge and gives you the exact steps to match outbound and inbound hashes and reclassify on 8949.
ETHARBBASEOPHYPE
High
Unreported Staking & Yield Income
Lido stETH rebases, Rocket Pool rewards, and yield protocol distributions are taxable as ordinary income when received. None appear on any 1099-DA. FormTrace flags each event and provides a step-by-step guide for pricing rewards at receipt and reporting on Schedule 1.
ETHPOLYGON
High
HyperCore ↔ HyperEVM Transfer Misclassification
Moving HYPE between HyperCore (the perp trading layer) and HyperEVM (the smart contract layer) is a non-taxable asset transfer. Frequently misreported as a disposal or income event by brokers unfamiliar with the architecture.
HYPEREVM
Medium
Unreported DeFi Protocol Activity
Token swaps on Uniswap, Curve, or 1inch are taxable disposal events. LP deposits and withdrawals may be taxable. None are reportable by custodial brokers. All require transaction-level documentation.
ETHARBBASEPOLYGON
Medium
Multi-Wallet Activity Gap
When a client operates multiple wallets, each broker reports independently with no visibility into transfers between them. Assets moved between owned wallets create apparent disposals that are actually non-taxable self-transfers.
ALL CHAINS
05 — WHO IT'S BUILT FOR

Professional-grade tools
for serious practices.

Built for practitioners advising clients with meaningful crypto exposure — not for retail investors doing their own taxes.

⚖
CPA Firms
Run a pre-filing check on any crypto client before you sign. Catch mismatch risk before the IRS does. Works as a first-pass screen or deep-dive supplement to your existing workflow.
  • Identify phantom gain exposure before signing
  • Document bridge and DeFi positions for client files
  • Generate findings reports for engagement letters
📊
RIAs & Wealth Managers
Clients with concentrated crypto positions are increasingly your highest-risk accounts for tax liability. Identify issues before they become surprises — and before they become your problem.
  • Pre-meeting wallet review for HNW clients
  • Identify undocumented DeFi and staking income
  • Surface issues for referral to tax counsel
🏛
Tax Attorneys
IRS examination or voluntary disclosure cases involving crypto require complete transaction reconstruction. Use FormTrace as a rapid triage tool before committing to a full forensic engagement.
  • Rapid triage for examination response
  • Identify scope of blockchain activity
  • Support voluntary disclosure documentation
What practitioners are saying
We ran it on a client's wallet before a review meeting. Found $340,000 in phantom gains the broker had misreported. That conversation changed the entire engagement.
Senior Tax Partner
Regional CPA Firm — Mid-Atlantic
The bridge transaction analysis alone is worth it. Half our DeFi clients have at least one Arbitrum bridge that's been classified wrong on their 1099.
Crypto Tax Specialist, CPA
Boutique Tax Practice — West Coast
I used to spend two hours per client pulling blockchain data manually. This runs in under a minute and catches things I would have missed. It's a different category of tool.
Managing Director
RIA — $2.4B AUM

Run your first
analysis today.

No account. No software. No commitment. Paste a wallet address and get a complete 1099-DA mismatch report in under 60 seconds — completely free for tax professionals.

Free Analysis
Analyze a client wallet
Enter any wallet address to run a full 10-chain 1099-DA audit. Results in under 60 seconds.

Read-only. We never request private keys or seed phrases.
Data is not stored or shared.