Marginal Effective Tax Rate (METR)

In Canada, there are many government benefits where the amount you receive depends on your income, or on your net family income. In most cases, as your income increases, the amount of benefit you receive is reduced (clawed back). Since you are essentially paying back the government a percentage of your income, the effect is very similar to an income tax. Your marginal effective tax rate (METR) is taking your federal and provincial income tax rates and combining them with the effective tax rate from government benefits, credits and tax deductions that are dependent on your income. Once the impact of these income tested items are included, a common effect is that people earning average income levels actually pay effective tax rate similar to or higher than the highest income earners. This is particularly true for people with children under the age of 18, as there are many federal and provincial benefits paid to the parents.

An example METR chart is below. This example is for a married person living in Ontario with two kids and a spouse that does not earn any income. In this example, the person is paying an effective tax rate of 60.1% for their income between $49,000 and $56,500, which is actually a higher marginal tax rate that somebody earning $250,000. The 60.1% effective tax rate is made up of federal income tax (20.5%), provincial income tax (9.1%), Canada Child Benefit clawback (13.5%), Ontario Child Benefit clawback (8.0%), GST Credit clawback (5.0%), Ontario Sales Tax Credit clawback (4.0%). This means that 30.5% of the income in that range is being paid back in the form of reduction in benefits.

In the chart below, there are cases where the METR is actually lower than 0%. A negative METR actually means that there is a government benefit that pays you more as your income increases, almost like you are getting a bonus on top of your income. In this example, it drops to -26% once the income reaches $3,000. This is due to the Canada Workers Benefit, where the amount your get paid increases for a period once your income reaches $3,000.


Figure 1: Example Marginal Effective Tax Rate (METR) for a person living in Ontario, a spouse with no income and 2 kids.



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