If you want the broader shortlist before choosing a fixed-income building block, start with best bond ETFs in Canada.
ZAG is Canada’s largest bond ETF with over $8 billion in assets, and for good reason — it offers broad exposure to 1,500+ Canadian government and investment-grade corporate bonds at a rock-bottom 0.09% MER. If you hold a balanced all-in-one ETF like VBAL or VGRO, you already own ZAG’s underlying index through Vanguard’s bond sleeve. For DIY investors building their own asset allocation, ZAG serves as the standard fixed-income building block: it pays monthly income, cushions equity drawdowns in most market environments, and benefits from falling interest rates as bond prices rise.
ZAG at a Glance
| Feature | Details |
|---|---|
| Full name | BMO Aggregate Bond Index ETF |
| Ticker | ZAG |
| Provider | BMO Global Asset Management |
| Inception | January 2010 |
| MER | 0.09% |
| Yield to maturity | ~3.8% |
| Distribution frequency | Monthly |
| Duration | ~7.5 years |
| Number of holdings | 1,500+ bonds |
| AUM | $8B+ |
| Exchange | TSX |
Holdings Breakdown
| Bond Type | Weight |
|---|---|
| Government of Canada | ~35% |
| Provincial bonds | ~25% |
| Investment-grade corporate | ~30% |
| Municipal & other | ~10% |
| Credit Quality | Weight |
|---|---|
| AAA | ~40% |
| AA | ~25% |
| A | ~20% |
| BBB | ~15% |
Monthly Income
| Investment | Annual Income (~3.8%) | Monthly Income |
|---|---|---|
| $50,000 | $1,900 | $158 |
| $100,000 | $3,800 | $317 |
| $200,000 | $7,600 | $633 |
| $500,000 | $19,000 | $1,583 |
ZAG vs Alternatives
| Feature | ZAG | VAB | XBB | ZDB |
|---|---|---|---|---|
| MER | 0.09% | 0.09% | 0.10% | 0.09% |
| Index | FTSE Canada Universe Bond | FTSE Canada Universe Bond | FTSE Canada Universe Bond | Discount bond |
| Duration | ~7.5 years | ~7.5 years | ~7.5 years | ~7 years |
| Tax efficiency | Standard | Standard | Standard | Better (more capital gains) |
| AUM | $8B+ | $5B+ | $4B+ | $1B+ |
ZAG vs GICs
| Feature | ZAG | 5-Year GIC |
|---|---|---|
| Return | ~3.5-4.0% + potential capital gains | 4.0-4.5% guaranteed |
| Liquidity | ✅ Sell anytime | ❌ Locked for term |
| CDIC insured | ❌ | ✅ Up to $100K |
| Price risk | ✅ Can lose value | ❌ No price risk |
| Benefit when rates fall | ✅ Bond prices rise | ❌ Locked at old rate |
If you are comparing cash-like options too, add best money market ETFs in Canada and gic vs bond ETF vs HISA to the decision.
Who Should Hold ZAG
| Profile | Suitable? |
|---|---|
| Fixed-income portion of balanced portfolio | ✅ Ideal |
| Want monthly income from bonds | ✅ Yes |
| Believe rates will fall (bond prices rise) | ✅ Good opportunity |
| Want guaranteed return | ❌ Use GICs |
| Short-term savings (1-2 years) | ⚠️ GIC or HISA may be better |
ZAG’s ~7.5-year duration means a 1% rise in interest rates will push the fund’s price down roughly 7.5%, while a 1% fall in rates would produce a similar gain. This makes ZAG a meaningful bet on the direction of interest rates. In 2022, rapid rate hikes caused ZAG to lose approximately 10–12% — an unusually poor year that reminded investors that bonds are not risk-free. Going forward, with rates elevated, ZAG offers both a decent yield (~3.8%) and the potential for capital gains if the Bank of Canada continues cutting. Compare that to GICs, which guarantee your rate but lock you in and don’t benefit from rate cuts.
That fixed-income sizing decision should sit inside your broader plan from asset allocation by age.
The Bottom Line
ZAG is the default Canadian bond ETF for a reason: broad diversification, monthly income, institutional scale, and the lowest MER in its category. It belongs in the fixed-income sleeve of any balanced portfolio and pairs naturally with a Canadian equity ETF like VCN and a global equity ETF like XAW for a classic three-fund portfolio. If you need certainty and can lock money away, a GIC ladder may serve you better. But for liquidity, potential capital appreciation, and portfolio insurance against equity crashes, ZAG remains the standard.
ZAG pros and cons
Pros:
- Lowest MER of any broad Canadian bond ETF (0.09%)
- 1,500+ bonds — excellent diversification across government and corporate issuers
- Monthly distributions — consistent income
- $8B+ AUM — one of Canada’s most liquid ETFs
- Serves as an effective equity hedge: bonds typically rise when stocks fall sharply
Cons:
- Duration of ~7.5 years — sensitive to interest rate increases (rising rates lower bond prices)
- In a rising rate environment, ZAG can lose value (as investors saw in 2022 when ZAG fell ~10%)
- Yield (~3.8%) is lower than GICs at many banks during periods of high rates
- No inflation protection — nominal bonds lose real value in high-inflation environments
Best for: Long-term investors building a balanced three-fund portfolio who need a low-cost, liquid Canadian bond exposure. Not suitable as a short-term savings vehicle (use a HISA ETF or GIC instead).
ZAG vs other Canadian bond ETFs
| ETF | MER | Duration | Yield | Difference |
|---|---|---|---|---|
| ZAG (BMO) | 0.09% | ~7.5 yr | ~3.8% | Cheapest broad market |
| VAB (Vanguard) | 0.09% | ~7.5 yr | ~3.8% | Near-identical to ZAG |
| XBB (iShares) | 0.10% | ~7.5 yr | ~3.8% | Marginally more expensive |
| ZDB (BMO discount bonds) | 0.09% | ~7.5 yr | ~3.8% | Defers distributions for tax efficiency |
| VSB (Vanguard short-term) | 0.11% | ~2.8 yr | ~3.5% | Lower interest rate risk |
ZDB is worth considering in non-registered accounts — it defers distributions through discount bond structure, improving tax efficiency. Inside a TFSA or RRSP, ZAG and ZDB are equivalent.