There are significant birthdays every DIY investor should be aware of. Did you know about all of them?

The list below is a gross simplification — like all things in the Canadian Tax code, the exceptions and caveats fill many pages, but this is roughly correct. I’ve included links so you can read the relevant sections yourself and see if you agree with my simplifications!

The day of your child’s birth

Per the feds, a birth certificate for your child is all you need to apply for a Social Insurance Number. And although their working days are far into the future, their RESP eligibility starts right away — but you can’t open an RESP for a child unless that child has a SIN. The lifetime limit for donations to an RESP is currently set at $50k/child. The sooner those contributions start, the sooner you can collect free money (the CESG, $500/year, $7200 per child lifetime), and the longer your contributions can benefit from the power of compounding.

Your 18th birthday

This is significant one for a number of reasons!

TFSA

Once you turn 18¹, you can open a TFSA and begin contributing. Even if you don’t start contributing, your TFSA limit starts to accumulate the year you turn 18. In 2025, that annual limit is $7000 per year, and it grows at the rate of inflation². It’s cumulative, so it’s not a “use it now or lose it forever” kind of proposition. At the start of every calendar year, there are a flurry of announcements indicating the new annual limit.

You can contribute to your TFSA forever, even in retirement. I am!

CPP contributions kick in

If you’re over 18 and earn more than $3500 a year, you’ll have to pay CPP contributions. While current you may balk at this sort of reduction in your take-home pay, future you will appreciate the inflation-index adjusted salary you can collect later in life.

FHSA

You can open a First Home Savings Account on your 18th birthday…or maybe your 19th birthday³. And the year you open it, you add $8000 in eligible contribution room…which continues every year, to a maximum of $40000.

Your 19th birthday

The so-called “age of majority⁴” in Ontario allows you to roll in free money in the forms of GST credits, Trillium benefits⁵ (in Ontario) and carbon tax credits⁶ . The cost of admission is filing a tax return. No excuses — plenty of online providers offer free returns for “simple” returns and my friends at Wealthsimple offer “pay what you want” tax filing.

This is also a time you are eligible to open an RRSP⁷, which may make sense if you’re already maxing out your TFSA contributions.

Your 35th birthday (or later)

An RESP can only be open for 35 years.

Your 60th birthday

This is the first year you can choose to collect CPP; generally speaking, most experts recommend that you delay collecting CPP for as long as possible, for two reasons:

• It may be the only inflation-protected income you have (this applies to me, I have no other pension)
• You get more money the longer you wait. (you lose 0.6% of payment for every month you start before your 65th birthday. That adds up to a reduction of 36% if you start on the day you turn 60).

My tools page includes the very helpful CPP calculator, which can help you make a decision concerning your CPP start date.

Your 65th birthday

This is the first year you can choose to collect OAS. Experts are a little more split on whether or not to delay this one — the benefits to delaying to age 70 are not as strong as for CPP⁸. My plan is to delay, as it’s another inflation-adjusted benefit.

If you’re collecting any sort of pension (RRIF payments, CPP, employer pension) this is the first age at which you can split that income with your spouse. This can reduce your tax bill.

Your 70th birthday

You have to start taking CPP and OAS by this time.

Your 71st birthday

You can no longer contribute to an RRSP and you have to open a RRIF. Lots of the literature out there seems to imply that this is the ONLY time you can open a RRIF, but rest assured, there’s no minimum age for opening a RRIF — I’ve been collecting from mine since the start of the year 🙂

Your 85th birthday

This is the last year you can start collecting from an ALDA (advanced life deferred annuity) you have set up. The ALDA is a vehicle I just learned about, and need to do a bit more research. It may be a way to fund income in your later years when the complexity of managing withdrawals in a DIY fashion may be too cognitively overwhelming.

What birthdays are you thinking about? Let me know at comments@moneyengineer.ca.

1. Or possibly 19, depending on where you live. ↩︎
2. But only in increments of $500. Even though inflation is drifting back down to more usual levels, doing the math indicates that we should expect more frequent increases in the TFSA limits in the years to come. Adding $500 to a $7000 limit (a 7% bump)is a lot easier than adding $500 to a $5000 limit (a 10% bump) ↩︎
3. Per https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/first-home-savings-account/opening-your-fhsas.html “certain provinces and territories, the legal age at which an individual can enter into a contract (which includes opening an FHSA) is 19 years old” ↩︎
4. This language is so opaque, it’s like a parody of government speak. Or maybe it’s a commentary on the aging demographic of Ontario? ↩︎
5. Some of the benefits even kick in earlier ↩︎
6. A limited time offer, presumably ↩︎
7. Per CRA, there is NO minimum age at which you can open an RRSP. Contributing to an RRSP requires that you enter into a contract (meaning you have to be of an age that permits this, either 18 or 19) and you have to earn money. ↩︎
8. It’s still 0.6% per month of delay, or 36% over 5 years. That’s pretty good RoI, in my view. ↩︎