Quick answer
HIFO is the tax optimiser's cost basis method — matching your highest-cost crypto first to minimise what the IRS sees as profit.
Accounting
United States
HIFO Method
Highest In, First Out — sells the highest-cost coins first to minimise taxable gains; permitted in the US with specific identification.
United StatesUnderstanding HIFO Method on crypto
Highest In, First Out (HIFO) is a cost basis method that treats the highest-cost units of a cryptocurrency as sold first. By matching disposals against the most expensive acquisitions, HIFO minimises the taxable gain (or maximises the deductible loss) on each disposal. In the US, HIFO is permitted under the specific identification election — meaning the taxpayer must have adequate records to identify each lot disposed of. HIFO is particularly valuable in bull markets where later purchases at higher prices can be matched against sales to reduce gains. Unlike FIFO, HIFO is not universally accepted — India, Australia, and Canada generally require FIFO or average cost.
Highest In, First Out (HIFO) is a cost basis method that treats the highest-cost units of a cryptocurrency as sold first. By matching disposals against the most expensive acquisitions, HIFO minimises the taxable gain (or maximises the deductible loss) on each disposal. In the US, HIFO is permitted under the specific identification election — meaning the taxpayer must have adequate records to identify each lot disposed of. HIFO is particularly valuable in bull markets where later purchases at higher prices can be matched against sales to reduce gains. Unlike FIFO, HIFO is not universally accepted — India, Australia, and Canada generally require FIFO or average cost.
What this means for your crypto activity
Lower gains in rising markets
HIFO consistently produces lower taxable gains than FIFO in a rising market.
Specific identification required
To use HIFO, you must maintain detailed lot-level records and make a specific identification election at time of disposal.
US-only method
HIFO is only permitted in the US under specific identification — not HMRC pooling, Australian FIFO, or Canadian ACB.
No retroactive changes
Changing from FIFO to HIFO retroactively is not permitted — consistency and documentation are required.
Short-term trade-off
HIFO may produce more short-term gains if recent (higher-cost) purchases haven't yet met the 12-month long-term threshold.
- HIFO consistently produces lower taxable gains than FIFO in a rising market.
- To use HIFO, you must maintain detailed lot-level records and make a specific identification election at time of disposal.
- HIFO is only permitted in the US under specific identification — not HMRC pooling, Australian FIFO, or Canadian ACB.
- Changing from FIFO to HIFO retroactively is not permitted — consistency and documentation are required.
- HIFO may produce more short-term gains if recent (higher-cost) purchases haven't yet met the 12-month long-term threshold.
Seeing it in action
Example scenario
David has accumulated ETH over 3 years: Lot A (2021, $1,500), Lot B (2022, $3,000), Lot C (2023, $1,800). He sells 1 ETH at $3,500 in 2024. Under HIFO, Lot B is matched first (cost $3,000): gain = $500. Under FIFO, Lot A is matched (cost $1,500): gain = $2,000. HIFO saves him from reporting $1,500 of additional gain. Lot B is also short-term (under 12 months depending on exact dates) — a potential trade-off.
How this works across jurisdictions
- United States
HIFO permitted under specific identification election; taxpayer must have adequate records to identify specific lots at time of disposal; reported on Form 8949 with 'specific identification' noted.
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