@Ryan4474 You are right! The amount shown on line 30800 is 83.1933% of the total actual base and 1st additional contributions on CPP pensionable earnings (T4s box 16). It's to calculate the actual base contribution on your CPP pensionable earnings.
If you are using TurboTax Desktop, you have the possibility to look at the calculation of line 30800 on the RC381 form, in Part 3 - CPP/QPP contribution on employment income.
For more information about this calculation you can visit this link:
Line 30800 – CPP or QPP contributions through employment income
Thank you for choosing TurboTax.
