LIFO (Last In, First Out)
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Key Takeaway
A cost basis accounting method that assumes the most recently purchased cryptocurrency units are sold first, applying the newest acquisition costs to each disposal for tax calculation purposes.
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What Is LIFO (Last In, First Out)?
A cost basis accounting method that assumes the most recently purchased cryptocurrency units are sold first, applying the newest acquisition costs to each disposal for tax calculation purposes.
How LIFO (Last In, First Out) Works
Frequently Asked Questions
What is LIFO and when would a crypto investor use it?
LIFO — Last In, First Out — is a cost basis method that assigns the most recently purchased cryptocurrency lots to each sale. A crypto investor might consider LIFO when their most recent purchases carry higher cost bases than earlier ones — for example, if they bought near a price peak. In this scenario, LIFO assigns the highest-cost recent lots first, potentially reducing the taxable gain on each disposal compared to FIFO. However, LIFO also tends to produce short-term gains because recent lots are less likely to have exceeded the one-year holding threshold. Whether LIFO is advantageous depends heavily on specific purchase history, market conditions, and the investor's income bracket.
How does LIFO differ from FIFO for cryptocurrency tax purposes?
FIFO assigns the oldest purchased lots to each disposal, while LIFO assigns the most recently purchased lots. This difference in lot assignment produces meaningfully different tax outcomes. FIFO tends to produce long-term capital gains more often because older lots frequently exceed the one-year holding threshold. LIFO tends to produce short-term gains more often because recent lots are less likely to have been held for twelve months. In a rising market, FIFO may produce larger gains but at lower long-term rates, while LIFO may produce smaller gains but at higher short-term rates. In a declining market, LIFO's recent high-cost lots may reduce gains or increase losses compared to FIFO's older, lower-cost lots.
Is LIFO an accepted cost basis method for cryptocurrency in the United States?
The permissibility of LIFO specifically for cryptocurrency is not definitively settled under current IRS guidance. LIFO is explicitly prohibited for securities — such as stocks and bonds — under US tax law. Because the IRS classifies cryptocurrency as property rather than a security, some practitioners argue LIFO may be available, while others caution against it due to the unsettled regulatory landscape. The IRS has not issued formal guidance explicitly approving or rejecting LIFO for crypto. Given this ambiguity, applying LIFO to cryptocurrency carries regulatory risk. FIFO, HIFO, or specific identification are generally considered more defensible positions under current guidance. Consulting a qualified crypto tax professional before using LIFO is essential.
Common Misconceptions About LIFO (Last In, First Out)
LIFO always produces a lower tax bill than FIFO for cryptocurrency.
LIFO does not universally reduce the tax bill compared to FIFO. The outcome depends entirely on the specific purchase history and market conditions. In a market where recent purchases carry lower cost bases than older ones — such as when a token has been steadily declining — LIFO assigns the cheapest recent lots, potentially producing larger gains than FIFO's older, higher-cost lots. Additionally, LIFO frequently produces short-term gains because recent lots are less likely to have been held for more than twelve months, and short-term gains attract higher ordinary income rates. The net tax impact of LIFO versus FIFO must be calculated based on your specific transaction history.
LIFO is widely accepted and commonly used for crypto taxes, just like for inventory accounting.
LIFO is a common inventory accounting method in business contexts, but its application to individual cryptocurrency tax reporting is not straightforward or universally accepted. For securities, LIFO is explicitly prohibited by the IRS. For cryptocurrency — classified as property — formal IRS guidance on LIFO has not been issued, creating regulatory uncertainty. Many tax professionals advise against using LIFO for crypto due to this ambiguity and the risk that the IRS could challenge it. The business familiarity of LIFO in inventory contexts does not translate directly into its safe and accepted use for personal cryptocurrency capital gains reporting.
You can freely switch between FIFO and LIFO each year to choose whichever is more favourable.
Switching cost basis methods year by year to retrospectively choose the most tax-favourable outcome is not permitted. The IRS requires consistent application of a chosen cost basis method. Once a method has been applied to a set of transactions, switching requires formal approval from the IRS through a change in accounting method procedure. Selecting a different method going forward for new acquisitions may be possible in some circumstances, but cherry-picking between methods across prior years is not a valid tax strategy. The importance of choosing your cost basis method deliberately at the outset — and maintaining it consistently — cannot be overstated.