I want to increase my tax payment

As per TurboTax "

To change the amount of income tax deducted by your employer, fill out a Form TD1. The form is available for download online from CRA although your employer may already have this form available to you. Simply fill in the blanks for credit amounts such as spousal or dependant credits, tuition, disability and caregiver amounts. These amounts give your employer a view into how much income tax should be deducted at the source and your employer can adjust your tax withholding accordingly. Return this form to your employer – not CRA.

In addition to totalling all of your anticipated credits, the form TD1 is also the way to have extra income tax deducted if you think you will have a balance owing at tax time due to other income circumstances."

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