What is the difference between box 18 and 19?

[hebertedie]

If I enter only 18, it tells me to go back and enter 19.

[Nav]

Which slip are you entering on

[TC Canadian Tax Filer]

assuming you are on T4, box 19 wont need to be entered, as it wont affect your tax refund, as it is the employeer's contributions

[chris_mulholland · Accepted solution]

Line 18 - Employee's EI premiums
Total of box 18 from all T4 slips.

Line 19 - Employer's EI premiums
Employer's share of EI premiums (the employees' total premiums multiplied by the employer's premium rate).