Canada has five major registered accounts. Each exists to encourage a different kind of saving, and each has its own set of rules - but the shapes are easier to keep straight than most people think.

1. TFSA (Tax-Free Savings Account) - the Swiss Army knife. Money goes in AFTER tax, grows tax-free, comes out tax-free. Good for: emergency funds, flexible long-term investing, anyone.

2. RRSP (Registered Retirement Savings Plan) - the tax-deferred retirement account. Money goes in BEFORE tax (deducted), grows tax-free, taxed on the way OUT. Good for: high earners building retirement savings where their future rate will be lower.

3. FHSA (First Home Savings Account) - the newest and most powerful. Deductible going in (like RRSP) AND tax-free coming out for a first home (like TFSA). Good for: anyone who hasn't owned a home and might buy one within 15 years.

4. RESP (Registered Education Savings Plan) - for kids' post-secondary education. Contributions aren't deductible but the government MATCHES 20% via the CESG. Good for: parents, grandparents, godparents with a child under 17.

5. RDSP (Registered Disability Savings Plan) - for people approved for the Disability Tax Credit. Up to 300% government matching grants and unconditional bonds for low-income families. The most generous account in Canada, quietly.

All five shelter investment growth. The difference between them is WHEN the tax happens and WHAT the withdrawal rules are. Pick the account that matches the goal, not the other way around.

The word 'registered' simply means the account is registered with the Canada Revenue Agency. CRA knows it exists, tracks your contributions, and applies special tax rules to what happens inside it.

Without registration, every dollar of investment income - interest, dividends, capital gains - is taxable in the year it is earned. With registration, some or all of that tax disappears, depending on the account type.

The registration is what creates the magic. A regular brokerage account holding XEQT is taxable. A TFSA holding the exact same XEQT is tax-free. The investment is identical - the wrapper changes the tax outcome.

Every registered account has contribution limits enforced by CRA. Exceed them and you pay penalties (1% per month for TFSAs and RRSPs). CRA tracks your room through your tax return and Notice of Assessment. Always check CRA My Account before contributing to any registered account.

Every registered account has three knobs that determine its tax treatment. Understanding these three knobs is the entire framework you need.

KNOB 1 - CONTRIBUTIONS: is the money going in before tax (deductible) or after tax? RRSP and FHSA contributions are deductible - they reduce your taxable income. TFSA and RESP contributions are after-tax - you already paid income tax on that money.

KNOB 2 - GROWTH: is investment income inside the account taxed? For all five major registered accounts, the answer is NO. Interest, dividends, and capital gains accumulate inside the account without triggering any tax. This is the single biggest advantage of registration - tax-free compounding.

KNOB 3 - WITHDRAWALS: is money coming out taxed? TFSA and FHSA (for a home) withdrawals are tax-free. RRSP withdrawals are taxed as regular income. RESP withdrawals split: your original contributions come out tax-free, but growth and grants are taxed in the student's hands (usually at 0% because students earn little).

Once you understand these three knobs, every account comparison boils down to: which knobs are turned to 'tax-free' and which are turned to 'taxable'? TFSA: taxable in, free growth, free out. RRSP: free in, free growth, taxable out. FHSA: free in, free growth, free out (for a home). That is the whole picture.

Imagine you hold $10,000 of XEQT in three different accounts. Same investment, same returns. But the tax treatment is completely different.

IN A TFSA: your $10,000 grows to $19,700 over 10 years at 7%. You withdraw the full $19,700 tax-free. You keep $19,700.

IN AN RRSP: same growth to $19,700. But when you withdraw, it counts as income. At a 30% marginal rate, you pay $5,910 in tax. You keep $13,790. (The trade-off is you got a $3,000 tax deduction when you contributed.)

IN A NON-REGISTERED ACCOUNT: growth is the same, but every year you owe tax on distributions. Capital gains at 50% inclusion, dividends at the gross-up rate. Over 10 years, the drag reduces your final balance to roughly $17,500 before a final capital gains tax on the sale. You keep roughly $16,000-$17,000.

The gap between $19,700 (TFSA) and $16,000 (non-registered) is $3,700 - entirely caused by the account type, not the investment. This is why financial planners say 'max your registered accounts first.' The tax shelter is worth thousands of dollars on the same underlying investment.