Cost basis of shares sold Taxable capital gain Tax on gain
Average $4,000 (100 shares x $40) $6,000 ($10,000 – $4,000) $900 ($6,000 x 15%) 
FIFO $1,000 (100 shares x $10)  $9,000 ($10,000 – $1,000)  $1,350 ($9,000 x 15%)
LIFO $6,500 (100 shares x $65)  $3,500 ($10,000 – $6,500)  $840 ($3,500 x 24%) 
Low cost $1,000 (100 shares x $10)  $9,000 ($10,000 – $1,000)  $1,350 ($9,000 x 15%) 
High cost $6,500 (100 shares x $65)  $3,500 ($10,000 – $6,500)  $840 ($3,500 x 24%) 
Tax Lot Optimizer $6,000 (100 shares x $60)  $4,000 ($10,000 – $6,000)  $600 ($4,000 x 15%) 
Specified lot $6,000 (100 shares x $60)  $4,000 ($10,000 – $6,000)  $600 ($4,000 x 15%) 
Disclosure Title
Source

Schwab Center for Financial Research. The example is hypothetical and provided for illustrative purposes only.