Since the CPP is a taxable benefit, you may want to hold off applying for your CPP benefits until you have stopped working, have a lower overall income and thus fall into a lower tax bracket.
You are also allowed to share your pension income with your spouse or common-law partner, which could potentially reduce your taxable income overall and put you in a lower bracket. You can use the government’s Canadian Income Retirement Calculator to explore your options.
Note that you can also open a registered retirement savings plan (RRSP) to contribute to and receive government tax benefits. You can then move your RRSP funds to a registered retirement income fund (RRIF), another tax-deferred account, to avoid a hefty tax bill when you turn 71.