I currently have an RRSP through work that I contribute to. However, the amount is significantly smaller than my annual limit. I have a self-managed RRSP separately and contribute sizable amounts. Thus far, I have gotten a large refund every year come tax time, since I claim the full RRSP contribution I've made that year.
Is there any way I can notify the CRA of intent to contribute a large amount to my RRSP in the upcoming year in order to reduce the tax withholdings on each paycheck instead of receiving a large refund at tax time?