Budget 2024 makes a small move toward taxing the rich. Here’s why more is needed

Under the new rules, 66 per cent of the gains above $250,000 will be taxable. The primary residence exemption remains, with the lifetime exemption increased to $1.25 million.

This change is expected to raise $18 billion over the next five years and to be paid by only the 40,000 or so richest individuals. But even with the 2024 change, the income from buying and selling assets will be taxed less than from working.

These discrepancies lie at the heart of inequities in the Canadian tax system. The highest-income households benefit from several sources of untaxed or lightly taxed income. 

A fair tax system should tax the same amount of income at the same rate regardless of the source. Bay Street accountant Kenneth Carter, who headed a royal commission on taxation in the mid-1960s, captured this notion with his comment that “a buck is a buck.”

Carter and the other commissioners also advocated an overall progressive tax system. Have we achieved that? 

Our new study of Canada’s tax system, which examined all sources of income and all taxes across the income distribution, finds that we have not. 

Taxes at the bottom of the income distribution are modestly progressive. Then, there is a flat tax structure through the middle. Finally, it gets regressive at the top with the top 5 per cent paying a lower rate than the bottom 95 per cent, and the top 1 per cent paying an even lower rate. 

Part of the problem is the partial exclusion of capital gains because as you approach the top, ever more income is from owning rather than working. Further, many taxes, such as property taxes and payroll taxes, are not progressive.

Since 2004, Canada’s tax system has become less progressive, with rates in 2022 as much as 4.7 percentage points higher for the bottom two deciles. 

One positive development is that rates for the top 5 per cent of households are somewhat higher in 2022 than 2004, largely due to the addition of a new top income tax bracket in 2016. The new capital gains inclusion rate will help nudge up rates at the very top. 

Outside of the top 5 per cent, federal taxes were generally lower in 2022 than 2004. However, this reduction was more-than-offset by higher provincial taxes. Provincial tax distribution is more regressive across the whole distribution and has become more so. 

What should be done?

First, we need higher top rates and elimination of various tax preferences, like capital gains exclusion, that primarily benefit top earners.

In addition, we need to tax inheritances and wealth to level the generational playing field.

Finally, we need to increase corporate taxes with a focus on windfall taxes in sectors like groceries and oil and gas. 

A fair and decent society should have neither extreme of obscenely rich nor desperately poor citizens. Taxation of the wealthiest is a central means to reduce inequality, provide robust public infrastructure and services that benefit all, and create opportunities for all to live a decent life.