It is undeniable that Tax-Free Savings Accounts (TFSAs) have unique advantages but I’m somewhat surprised by some recent reports that suggest that a lot of Canadians would be better off contributing to a TFSA instead of a RRSP. These arguments forget to take into account the unique advantages offered by RRSPs.

Defer income taxes

RRSPs allow taxpayers to defer their income tax obligations to a future year. Taxpayers with wildly fluctuating incomes can smooth out their income tax obligations by contributing to a RRSP in fat years and withdrawing from it in lean years.

Income splitting

When one spouse earns a much higher income than her partner, she can take advantage of income splitting opportunities offered by RRSP accounts. She can contribute to a spousal RRSP and get her income taxed at the hands of the lower income spouse. She can take advantage of income splitting available to seniors who withdraw from a RRSP or RRIF. The tax benefits of income splitting can be substantial.

Increase in income-tested benefits

It is true that withdrawals from a RRSP or RRIF may result in a reduction of income-tested benefits. But the flip side is often neglected. Contributions to a RRSP reduce one’s taxable income and increases income-tested benefits such as the Canada Child Tax Benefit.

Here’s an example. An Ontario couple with two children, earning $50,000 each will receive an annual CCTB of $335. If the couple contribute $9,000 each to their RRSPs their CCTB payments will increase to $1,055 per year.

Shelter foreign investments from tax

Investors who hold globally diversified portfolios should hold their US equities and US-listed ETFs in their RRSPs. Dividends from foreign equities in taxable accounts are taxed at marginal rates. US stocks and ETFs held in TFSAs are dinged a 15% withholding tax. When held in RRSP accounts, these assets are sheltered from tax until withdrawal.