IRS 1099-DA · Mandatory US Crypto Asset Tax Reporting
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This entry sits under fintech index. Read it with Japan Financial Regulation — Legal Framework for Tokens, Crypto Assets, and Payments for adjacent context and Three-Layer Structure of Japan's Stablecoin Regulatory Regime (JPYC, USDC, Project Pax) for the broader system boundary.
[!info] TL;DR IRS Form 1099-DA (Digital Assets) is the US mandatory crypto asset tax reporting form, effective 2025-01 , with full operation from the 2026 年 tax year. All brokers (including exchanges, wallets, DeFi front-ends, and certain payment channels) are required to report customer crypto transactions to the IRS. Coordination with CARF (OECD cross-border) = the complete end of cross-border crypto anonymity. 1099-DA + CARF + GENIUS §501 chain-level freeze = triple surveillance loop.
Key facts
- IRS 1099-DA 2023 final rule + 2024 amendments + effective 2025-01 •
- Full operation from 2026 年 tax year (filing deadline 2027-04 ) •
- DeFi broker definition revised multiple times through 2024-2026 ; fully decentralised protocols currently partially exempt •
- Coordination with CARF covers approximately 50 OECD countries •
- Broker scope: exchanges / wallets (custodial mandatory) / DeFi front-ends / stablecoin issuers / payment processors •
- Reporting content: transaction amount + time + asset type + customer KYC + cost basis + holding period + estimated capital gain •
- Sole exemption: fully decentralised protocol + no admin key + no front-end company •
Mechanism / How it works
Broker definition (IRS 2023 final rule + 2024 amendments):
- Exchanges (Coinbase / Kraken / Binance.US etc.)
- Wallet services (custodial mandatory · non-custodial partial)
- DeFi front-ends (contested → partially exempt under 2026 final rule)
- Stablecoin issuers (Circle / Tether in part)
- Payment processors (Stripe Bridge / Privy etc.)
- Cross-border transactions (coordinated with CARF)
Coordination with CARF (end of cross-border anonymity):
| Axis | 1099-DA (US domestic) | CARF (OECD cross-border) |
|---|---|---|
| Applicability | US brokers | Brokers in ~50 countries globally |
| Report to | IRS | Mutual exchange among national tax authorities |
| Start | 2025-01 | Phased rollout across countries 2026-2027 |
| Linkage | Overlap means cross-border component of US customers is also covered | Closes the loop on global crypto KYC |
Triple surveillance loop: 1099-DA (US domestic tax) + CARF (cross-border information exchange) + GENIUS §501 (chain-level freeze) = from 2026 年 onward, any “crypto anonymity” narrative is invalidated. For chain-level enforcement examples, see Chain-Level OFAC Freeze = Dollar Chain-Level Hegemony.
Origin & evolution
2014 IRS Notice 2014-21 defined crypto assets as property → mandatory capital gain reporting. 2021 Infrastructure Investment and Jobs Act created the legal basis for 1099-DA. 2023 IRS final rule + 2024 amendments refined the broker definition. 2025-01 1099-DA took effect. Through 2024-2026 the DeFi definition was revised multiple times; fully decentralised protocols are currently partially exempt. Coordination with OECD CARF (phased rollout by countries 2026-2027 ; details at CARF + 1099-DA = The Complete End of Cross-Border Crypto Anonymity) = globalisation of crypto tax transparency. For the full picture of US VASP regulation, see Global VASP regulatory 8 -pole comparison matrix — JP / KR / HK / SG / EU / US / UAE / UK.
Related
- Wiki Index
- CARF + 1099-DA = The Complete End of Cross-Border Crypto Anonymity
- GENIUS Act §501
- FATF Travel Rule · R.16 VASP $1,000 K KYC Information Transmission
- FATF Grey List / Black List and the AML/CFT Country Evaluation Mechanism
Sources
Discovery
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