Topic: Investing Deep Dive · Part 1 of 8 · ⚫ Expert

In one sentence

The Couch Potato is a simple way to invest: you buy a few low-cost index funds, keep a fixed mix, and fix that mix about once a year.

Words to know

• Index: a list of many companies, like “the 250 biggest companies in Canada”. Its value goes up and down with those companies.
• Index fund: a fund that buys everything in an index. It does not try to pick winners.
• ETF (exchange-traded fund): a fund you buy and sell on a stock exchange, like a share.
• Asset allocation ETF: one ETF that holds a full mix of stock funds and bond funds from around the world.
• MER (management expense ratio): the yearly cost of a fund, shown as a percentage of your money in it.

Step 1: Know where the name comes from

The name did not start in Canada. A U.S. newspaper writer, Scott Burns, introduced the “Couch Potato Portfolio” in the Dallas Morning News on September 29, 1991.

His first version was very simple: half the money in stocks and half in bonds. The idea was that anyone could do it. You do not need to watch the news or pick stocks.

In Canada, the idea became well known through MoneySense magazine and the Canadian Couch Potato blog by Dan Bortolotti. Today, “Couch Potato” in Canada usually means a small portfolio of low-cost index ETFs.

Step 2: Understand the index idea

Many funds that pick stocks do not beat their index over long periods, once fees are taken out. An index fund does not try. It simply owns the whole market.

• You own hundreds or thousands of companies at once. One company failing does not sink you.
• Costs are low, because nobody is paid to pick stocks.
• Your result is close to the market’s result, minus a small fee. Index funds do not match the index exactly, because of fees and small differences in holdings.

The trade-off: you will never beat the market. You also accept every market drop. In a bad year, an index fund falls with the market.

Step 3: Pick a model portfolio

A model portfolio is a ready-made recipe. It tells you what percentage goes into each type of investment. There are two common ways to build one.

Option A: one asset allocation ETF. One fund holds everything. The fund company keeps the mix on target for you. Examples of this type include iShares XBAL and Vanguard VBAL (about 60% stocks, 40% bonds), and iShares XGRO and Vanguard VGRO (about 80% stocks, 20% bonds). Other fund companies offer similar funds. These are examples of the fund type, not recommendations.

Option B: a few separate index ETFs. For example, one Canadian stock ETF, one global stock ETF and one Canadian bond ETF. Costs can be a little lower. But you must keep the mix on target yourself.

Checked October 2026 on each fund company’s website:

Type of asset allocation ETF	Stocks / bonds	iShares example	Vanguard example
All-equity	100 / 0	XEQT	—
Growth	80 / 20	XGRO	VGRO
Balanced	60 / 40	XBAL	VBAL
Conservative balanced	40 / 60	XCNS	—
Income balanced	20 / 80	XINC	—

The mixes are targets. The fund company may adjust them from time to time. Choosing the mix that fits your goals is the topic of the next post.

Step 4: Rebalance once a year

Over time, stocks and bonds grow at different speeds. Your mix drifts. Rebalancing means moving it back to your target.

• With one asset allocation ETF, the fund does this inside the fund. You do almost nothing.
• With separate ETFs, pick one date each year. Check your mix. Sell a little of what grew, or put new money into what fell behind.

Step 5: Keep fees low

Fees come out every year, in good years and bad years. A small difference becomes a big amount over decades, because the fee also takes away future growth on that money.

Many Couch Potato funds cost well under 0.50% a year. Many traditional mutual funds in Canada cost much more. Always check the MER on the fund’s own page or fact sheet before you buy.

Example

Two people each invest $10,000 for 25 years. Before fees, both investments grow 6% a year. These are made-up round numbers to show the effect of fees.

• Person A pays a 0.25% fee. Their money grows 6% − 0.25% = 5.75% a year.
• Person B pays a 2.00% fee. Their money grows 6% − 2.00% = 4.00% a year.
• Person A after 25 years: $10,000 × 1.0575²⁵ ≈ $40,458.
• Person B after 25 years: $10,000 × 1.04²⁵ ≈ $26,658.
• Difference: $40,458 − $26,658 = about $13,800, from fees alone.

In the first year, the fee gap is only $175 ($200 − $25). Over 25 years, it grows to more than the original $10,000.

Common mistakes

• Changing the plan after every news story. The Couch Potato works because you leave it alone.
• Holding several asset allocation ETFs at once. Each one is already a full portfolio, so this adds nothing.
• Choosing a mix with too many stocks, then selling in panic when markets drop.
• Looking only at past returns and not at the fee.

✅ My checklist

☐ I understand that an index fund owns the whole market and does not try to beat it.
☐ I have chosen between one all-in-one ETF and a few separate ETFs.
☐ I have checked the MER on the fund’s own website.
☐ I have picked one date each year to check my mix.
☐ I accept that my investments will go down in some years.

Next in this topic → Part 2: Asset allocation and rebalancing

Back to the topic → Investing Deep Dive

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There are no affiliate or referral links in this post. This is general information, not financial, tax or legal advice; everyone’s situation is different. Figures were checked in October 2026 and can change.

Sources: MoneySense: An interview with the original Couch Potato · Canadian Couch Potato · iShares Canada: About asset allocation ETFs · Vanguard Canada: Vanguard Balanced ETF Portfolio (VBAL) · Vanguard Canada: Vanguard Growth ETF Portfolio (VGRO) · OSC GetSmarterAboutMoney: Types of ETFs