Line 13c – Installment sales
If, for regular tax purposes, you used the installment method to report a non-dealer disposition of property that occurred after August 16, 1986, but before January 1, 1990, and if the obligation that arose from the disposition was an installment obligation to which the proportionate disallowance rule applied, refigure your income for AMT purposes without regard to the installment method.
Enter the difference between your AMT and regular tax income on this line. If the AMT income is smaller, enter the difference as a negative amount.
Qualified small business stock (QSBS) exclusion (R&TC Section 18152.5). For taxable years beginning on or after January 1, 2008, and before January 1, 2013, taxpayers were allowed to exclude 50% of the gain from the sale or exchange of their QSBS held for more than five years. If you received installment sale payments in the current year for sales of QSBS made before January 1, 2013, and you excluded the gain as allowed under R&TC Section 18152.5, multiply the excluded amount by 50% and enter it on this line as a positive amount.