
Worksheet ON428 
2023 


Use this worksheet to calculate the amounts to enter on your Form ON428, Ontario Tax. 
Keep this worksheet for your records. Do not attach it to your return. 

Line 58080 – Age amount (if you were born in 1958 or earlier) 

If the amount from line 23600 of your return is: 
• $43,127 or less, enter $5,793 on line 58080 of your Form ON428 
• $81,747 or more, enter "0" on line 58080 of your Form ON428 

Otherwise, complete the calculation below. 

Maximum amount 


1 
Amount from line 23600 of your return 


2 

Income threshold 

– 
3 

Line 2 minus line 3 (if negative, enter "0") 

= 
4 

Applicable rate 

x 15% 
5 

Line 4 multiplied by the percentage from line 5 

= 
► 
– 
6 
Line 1 minus line 6 (if negative, enter "0") 

= 
7 

Enter the amount from line 7 on line 58080 of your Form ON428. 

Line 58185 – Ontario caregiver amount 

Complete one column for each dependant. If you have more than three dependants, use a separate sheet of paper. 


Dependant 1 
Dependant 2 
Dependant 3 

Base amount 






1 
Dependant's net income from line 23600 of their return 

– 

– 

– 
2 
Line 1 minus line 2 (if negative, enter "0") 







(maximum $5,593 per dependant) 

= 

= 

= 
3 
Amount claimed for this dependant on line 58160 







of your Form ON428, if any 

– 

– 

– 
4 
Allowable amount for this dependant: 







line 3 minus line 4 (if negative, enter "0") 

= 

= 

= 
5 

Add the amounts from line 5 for columns 1, 2 and 3 (and others, if any). 

= 
6 

Enter the total from line 6 on line 58185 of your Form ON428. 




Line 58440 – Disability amount for self 
Complete the following calculation if you were under 18 years of age on December 31, 2023: 

Base amount 


1 
Maximum amount 


2 
Total child care and attendant care expenses for you, 


claimed by you or another person 


3 
Threshold for child and attendant care expenses 

– 
4 
Line 3 minus line 4 (if negative, enter "0") 

= 
► 
– 
5 
Line 2 minus line 5 (if negative, enter "0") 

= 
► 
+ 
6 

Line 1 plus line 6 
(maximum $15,177) 

= 
7 

Enter the amount from line 7 on line 58440 of your Form ON428. 




5006D E (23) 
(Ce formulaire est disponible en français.) 
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