Small Business Earnings Retention Act of 1980

Small Business Earnings Retention Act of 1980 - Amends the Internal Revenue Code to: (1) permit business to accumulate up to $500,000 of earnings without incurring liability for the tax on accumulated earnings; (2) increase from $100,000 to $500,000 the dollar amount of used investment property eligible for the investment tax credit; and (3) permit business with gross receipts of less than $1,000,000 for the last two preceeding taxable years to elect to use the cash method of accumulating in reporting inventories.