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Term 890 of 1038
1 min readTwo voicesInvesting

Specific Lot Identification.

Specific lot identification lets you choose exactly which shares to sell, so you can control the taxable gain or loss on the sale.
Verified June 2026 · Source: Internal Revenue Service
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Specific Lot Identification
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In plain English

When you buy the same investment more than once, each purchase is a separate lot with its own purchase date and price (its cost basis). Specific lot identification is a method where you tell your broker exactly which lots to sell, instead of letting a default rule decide. By choosing high-cost lots, you can shrink your taxable gain, and by choosing lots held over a year, you can qualify for lower long-term capital gains rates. It gives you the most control over the tax outcome of a sale, but you usually have to identify the lots at the time you sell.

Most useful ages
25 to 70

01Why it matters

Picking the right shares to sell can be the difference between a big taxable gain and a small one, so this method puts the tax outcome of every sale in your hands.

02The math, step by step

You own 100 shares of a stock bought at $20 and another 100 bought at $50, now worth $55 each. You want to sell 100 shares. If you specifically identify the $50 lot, your gain is only $5 per share. If you let the default first-in method sell the $20 lot, your gain is $35 per share, a much bigger tax bill.

03What this is NOT

Do not confuse with FIFO (first-in, first-out)

FIFO is a default that sells your oldest shares first whether you like it or not. Specific lot identification means you choose the exact shares, which often produces a better tax result but requires you to act at sale time.

04Receipts

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The Decoderby ClearMoneySchool

Plain-English answers from our glossary. Receipts included. Never advice.

Educational tool. Answers come only from ClearMoneySchool's published glossary and are not advice. Why we never give advice

Last reviewed June 11, 2026 · Reviewer Joseph Citizen, Founder