Cite as: Real Problem AI problem “Why does crypto cost basis still reset to zero every time you move ETH between MetaMask, Coinbase, and Ledger?”. Opportunity score 8.0 out of 10 (severity 8, AI feasibility 9, market signal 8, competition gap 7). Category FinTech. Trend LLM. Source signal: r/CryptoTax and Koinly support forum recurring threads on self-transfer mis-tagging.. Canonical URL: https://www.realproblem.ai/archive/why-does-crypto-cost-basis-reset-when-moving-eth-between-metamask-coinbase-and-ledger.
Why does crypto cost basis still reset to zero every time you move ETH between MetaMask, Coinbase, and Ledger?
CoinTracker and Koinly mis-tag self-transfers across MetaMask, Coinbase, and Ledger as taxable sales when the user forgets to mark them, inflating gains by tens of thousands.
Who has it: DeFi-active retail crypto holder with 5+ wallets.
Evidence
Users describe Koinly treating a move from their Ledger to Coinbase as a sale, creating gains that never happened, and spending weekends merging transactions that still come out wrong.
Our summary of a complaint that recurs in public posts, not a quote. Nobody submitted it to Real Problem AI.
Seen in: r/CryptoTax and Koinly support forum recurring threads on self-transfer mis-tagging.Why it is archived
Swapped out in AI-tool-builder content refresh (2026-08-26): generic vertical problem replaced by a more current, builder-relevant one.
Scoring breakdown
Existing players
- CoinTracker · Self-transfer matching is heuristic, often wrong on bridges.
- Koinly · Requires manual merging across chains and CEX.
- TokenTax · Human-assisted, expensive, slow.
What they are missing
A long-context LLM agent that reasons across on-chain timestamps, amounts net of gas, and CEX deposit memos to confidently auto-link self-transfers including bridges and wrapped tokens, with a confidence score per match.
Stack hint
#F19 · Canonical URL: https://www.realproblem.ai/archive/why-does-crypto-cost-basis-reset-when-moving-eth-between-metamask-coinbase-and-ledger