Allowable Business Investment Loss	ABIL
Step 1 Business investment loss in 2023 (enter this amount on line 21699 of your return) $ A Step 2 If you claimed a capital gains deduction in a previous year, you have to reduce your business investment loss. To determine the reduction, complete the calculation below and enter the result from line 17. Otherwise, enter "0" - B Line A minus line B = $ C Step 3 Allowable business investoment loss Amount from line C  $  x 1/2 = $ D Enter the amount from line D on line 21700 of your return. Step 4 Attach a note to your return that states the: name of the small business corporation; amount of the proceeds of disposition; number and class of shares, or the type of debt you disposed of; adjusted cost base of the shares or debt; insolvency, bankruptcy, or wind-up date; outlays and expenses on the disposition; date you bought the shares, or the date you acquired the debts; amount of the loss.                         Calculation of the business investment loss reduction   The reduction calculated below is considered to be a capital loss for the year.   Total of all capital gains deductions claimed from 1985 to 2022 1. For 1985 to 1987, total of the amounts from line 254 of your returns for these years $  x 2   $  1  2. For 1988 and 1989 (other than for eligible capital property gains), total of the amounts from line 254 of your returns minus any amounts reported on line 543 and 544 on Schedule 3; if negative enter "0" $ (a)  x 3/2 +  2  3. For 1988 and 1989 for eligible capital property gains, total of the amounts from line 254 of your returns minus the amount calculated at line (a) above; not the exceed lines 543 and 544 on Schedule3 $  x 4/3 +  3  4. For 1990 to 1999, total of the amounts from line 254 of your returns for these years $  x 4/3 +  4  5. For 2000, amounts from line 254 of your return IR $  x 1/IR* +  5  6. For 2001 to 2018, total of the amounts from line 254 of your returns for these years $  x 2 +  6  7. Amount from line 25400 of your 2019 return $  x 2 +  7  8. Total of lines 1 to 7 = $  8    Total of all other business investment loss reductions from 1986 to 2022 9. Total of the amounts reported on line 535 of Schedule 3 of your 1986 to 1994 returns $  9  10. Total of the amounts reported on line 034 of Schedule 3 of your 1994 to 1996 returns +  10  11. Total of the amounts reported on line 178 of Schedule 3 of your 1997 to 1999 returns +  11  12. Total of the amounts reported on lines 293, 178 and 5668 of Schedule 3 of your 2000 return +  12  13. Total of the amounts reported on line 178 of Schedule 3 of your 2001 to 2018 returns +  13  14. Amount reported on line 17800 of Schedule 3 of your 2019 return +  14  15. Total of lines 9 to 14 = $   - $  15  16. Line 8 minus line 15 = $  16    Business investment loss reduction 17. Line 14 or line A from Step 1 above, whichever is less Enter this amount on line B in Step 2 above and on line 17800 of Schedule 3 $  17    * This rate is from line 16 in Part 4 of Schedule 3 for 2000, or from your nortice of assessment or latest notice of reassessment for 2000.