When a fund advertises a yield two or three times the market’s, the money is coming from somewhere. This module is about finding out where — and the answer is usually option premium, your own capital, or credit risk that has not shown up yet.
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By the end of this module you'll be able to
Explain the mechanics of a covered call and draw its payoff.
Describe how a covered-call ETF manufactures a double-digit distribution.
Read a fund’s distribution breakdown and identify return-of-capital-driven NAV erosion.
State the conditions under which a covered-call strategy is and is not a good trade.
Recognise the common high-yield structures and the risk each one is really taking.
Apply three tests to any unusually high advertised yield.
How a covered call works
A call option gives its buyer the right to purchase a stock at a set strike price before a set date. Selling one obliges you to deliver the shares at that price if the buyer exercises. Selling a call against shares you already own is a covered call — covered because you can deliver the stock without buying it in the market.
Worked exampleYou own 100 shares at $50 — $5,000. You sell one call with a $55 strike expiring in a month and receive $1.20 per share, or $120, immediately. Three outcomes at expiry:
Stock at $48: the option expires worthless. You keep the $120 and your shares, now worth $4,800. The premium cushioned $120 of a $200 decline. Stock at $53: option expires worthless. You keep $120 plus $300 of appreciation. Best case. Stock at $62: the option is exercised. You deliver at $55, so you gain $500 plus the $120 premium — but you forfeited the $700 above the strike. You made $620 on a move that would have been $1,200.
That is the whole trade, and it is not complicated once stated plainly: you sold your upside above $55 for $120 in cash today. Whether that is a good deal depends entirely on what the stock does next, which you do not know.
The payoff, and what you gave up
The premium shifts the whole line up a little and then flattens it entirely. In a sideways market that is a good trade; in a strong bull market it is an expensive one.
The asymmetry is the point. Downside is fully retained — the premium cushions a small decline and does nothing against a large one. Upside is capped. So the strategy trades a small, certain gain for the loss of the occasional large one.
Over a long horizon this matters more than it first appears, because equity returns are themselves highly skewed: a modest number of very strong periods produce a large share of the total return. A strategy that systematically caps the best months keeps all the bad ones and forfeits a disproportionate share of the good ones. The result over decades is typically lower total return with lower volatility — which is a legitimate trade-off, provided it is the one you meant to make.
Covered-call ETFs
A covered-call ETF does this systematically: it holds a portfolio and writes calls against some proportion of it — often 25–50%, sometimes 100% — then distributes the premium. That is how a fund holding shares that yield 3% pays out 8–12%.
Feature
What it means for you
Distribution yield 7–12%
Mostly option premium, not dividend income
Overwrite ratio 25–100%
How much of the upside is sold. Higher yield, more capping
MER 0.65–0.85%
Substantially higher than a plain index ETF — you are paying for the option programme
Lower volatility
Genuine, and a real benefit for some holders
Lower long-run total return
The expected cost of capping upside in a market that trends up
The distribution is also not usually a “dividend” in the tax sense. Option premium is generally treated as capital gains or as return of capital rather than as eligible dividends, so none of the Module 5 dividend tax credit applies. In a taxable account the after-tax yield can be considerably less attractive than the headline suggests, and the treatment varies by fund — another reason to read the actual distribution breakdown.
Reading the distribution
This is the essential check, and it takes five minutes on the fund’s own website.
Find the distribution breakdown — every fund publishes the split between dividend income, capital gains and return of capital, usually in an annual tax characteristics document.
Look at the return-of-capital percentage. A modest amount is normal and can be a legitimate result of how option premium is characterised. A consistently large proportion, year after year, means much of what you are receiving is your own money coming back.
Chart net asset value per unit over five years. This is the decisive test. If the NAV per unit has fallen materially while the distribution held steady, the fund is paying you with capital. The yield stays impressive precisely because the denominator keeps shrinking.
The pattern to recognise. A fund launches at $20 with a 10% distribution. Five years later the unit price is $14 and the distribution per unit is lower, but the advertised yield is still around 10% because it is calculated on $14. An investor looking only at the yield sees an unchanged, attractive number. An investor looking at the NAV chart and the dollars per unit sees a position that has paid out a large portion of its own capital. Both are looking at the same fund.
None of this makes every covered-call fund a bad product. Some are well-run and do exactly what they claim. The point is that the headline yield cannot distinguish between the two, and the NAV chart can.
When it is a good trade
Reasonable circumstances:
You need income now and are willing to trade long-run growth for it — a retiree drawing on the portfolio, rather than someone in their thirties accumulating.
You expect a flat or moderately declining market for the holding. In sideways markets covered calls genuinely outperform.
Lower volatility is worth real money to you because it is what lets you stay invested.
It is held in a registered account, avoiding the messy tax characterisation.
Poor circumstances:
A long accumulation horizon. Capping the upside for decades is a large cumulative cost, and you do not need the income.
Reinvesting the distributions. You are paying a fee to convert your own upside into cash so you can buy it back — with tax friction in a taxable account.
Choosing the fund on yield alone, without reading the overwrite ratio or the NAV history.
Believing the distribution is “income” in the same sense a dividend is. It is a different thing with a different source.
Other high-yield structures
Structure
Where the yield comes from
The risk being taken
Covered-call ETFs
Option premium
Forfeited upside; possible NAV erosion
Split-share corporations
Structural leverage — preferred and capital shares carve up one portfolio
Distributions can be suspended if net asset value falls below a threshold; the capital shares are highly leveraged
Mortgage investment corporations
Interest on higher-risk mortgages
Credit risk concentrated in one property market; often illiquid
High-yield bond funds
Credit spreads on below-investment-grade debt
Default risk that appears suddenly in recessions, correlated with equities
Retail private credit
Lending to companies that cannot borrow cheaply elsewhere
Credit risk plus redemption gating — you may not be able to exit when you want
Leveraged income funds
Borrowing to hold more income assets
Everything in Module 8 of the risk course, applied to a yield product
“Monthly income” mutual funds
Often a fixed payout partly funded by return of capital
NAV erosion, hidden by a stable-looking monthly cheque
The common thread is that none of these is a free lunch and none is inherently illegitimate. Each is a compensated risk or a genuine trade-off, sold in a wrapper that emphasises the yield and de-emphasises what generates it. The problem is never that the product exists; it is buying it without knowing which of these rows you are in.
Three tests
Apply these to any yield materially above the market’s:
Where does the cash come from? Dividends from operating businesses, option premium, interest on credit, or your own capital. If you cannot answer this in one sentence, you do not yet understand the product.
What has the net asset value per unit done over five years? A steady yield on a falling NAV is a partial liquidation with a monthly statement.
What happens in a recession? Option premium falls when volatility normalises. Credit defaults rise. Leverage amplifies. Gating suspends redemptions. The answer for a broad dividend fund is “some companies cut”; for several rows above it is considerably worse.
Educational purposes only; not financial, investment or tax advice. Tax rules and rates change and depend on your province and circumstances — confirm your own numbers with the CRA and a qualified professional. Example companies and yields are illustrative. Always do your own research.