If you’re reading this blog, you’re likely curious about retirement planning and what it actually involves. Like many things tied to the future, retirement can feel vague. We know the day will come when work income stops and our savings need to take over. What most people do not know is how much savings that takes – or how to build it.

To help answer those questions, the financial world has long leaned on simple rules of thumb. One of the most common is the 10% Rule: the idea that saving 10% of your gross income each year can help build adequate retirement savings.

Sounds simple enough.

But retirement is personal. It depends on when you start saving, when you stop working, and the lifestyle you want. So, is it wise to rely on a rule this generic?

You cannot know unless you first understand what saving 10% is likely to get you.

This blog is meant to unpack what the 10% rule may realistically provide in retirement and help you decide whether it is the right fit.

Note: “Personal savings” in this blog refers to retirement savings outside of government pensions and may include employer-sponsored retirement plans and employer contributions, where available.

What Will 10% Get You?

Using a simplified model, someone who saves 10% of their income from age 30 to 65 may be able to replace roughly 60% of their working income in retirement until age 85.

This projection uses broad assumptions, including steady income during working years, a growth-oriented investment mix before retirement, a more conservative mix in retirement, and consistent 2% inflation.

That estimate should be viewed as a guideline, not a promise. Real life is more complex. Investment returns are not guaranteed, and income can change over time.

Still, this simplified model helps us turn the 10% rule into something tangible.

Is That Enough?

For many retirement lifestyles, it often is.

Retirement spending rarely mirrors working-life spending.

Some costs may decline or disappear altogether: debt may be paid off, children may have moved out, and downsizing can reduce housing costs. At the same time, new expenses may emerge, such as travel, hobbies, and long-term care needs.

Financial planning guidelines suggest that replacing roughly 70% of pre-retirement income can support a comfortable retirement (Government of Canada, 2025).

That is where the math becomes encouraging.

If personal savings replace around 60% of income, government pensions may bridge the remaining gap.

We won’t go too deep into government programs here, but in 2026 the maximum a retiree could receive from Canada’s two main public pension programs is approximately $26,990 per year – about $18,090 from CPP and $8,900 from OAS.

You are not guaranteed to receive the maximum. Actual amounts depend on contribution history, residency, age benefits begin, and personal income circumstances. For more details, visit Canada.ca.

Where the 10% Rule Falls Short

The picture above comes with one quiet assumption: you started early.

That matters more than many people realize.

The 10% rule works best when saving begins in your 30s, giving compounding decades to do the heavy lifting.

If saving begins later, the same 10% contribution rate will likely be insufficient to produce the same outcome.

In simple terms: the later you start, the higher your savings rate may need to be.

That does not mean you are behind beyond repair. It simply means the math changes and more precise guidance may be needed.

If you are starting later in life, it is wise to use a retirement calculator, such as Fidelity’s. This will help you identify a more accurate contribution rate to reach your goals, rather than relying solely on a general rule of thumb.

Overview

In a nutshell, the 10% rule is a strong guideline, but it is most effective for younger workers starting early in their careers.

At that stage of life, retirement often feels distant and abstract. The rule was designed to be simple, memorable, and easy to act on. Its purpose is to encourage immediate saving for those who feel retirement is too far away to think about.

As retirement draws closer, the value of this generic rule begins to decline. In your 40s and 50s, retirement becomes more tangible, your goals become more specific, and your planning should as well.

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Written by:
Erica D’Alesio
Group Retirement and Pension Education Specialist
Selectpath Benefits & Financial