Turning 18 changes the game for your family’s finances
When your child turns 18, they gain access to adult financial tools. Some can build long term wealth. Others can cause real damage if used incorrectly. This guide is written for Canada, with Ontario specifics where helpful. It is not legal advice. Use it as a practical checklist, then confirm anything complex with a tax professional or a lawyer.
1) TFSA. Start early. Avoid the one big mistake.
When TFSA room starts
TFSA contribution room begins when your child is 18 or older, a resident of Canada, and has a SIN. Even if they do not open an account right away, room can accumulate depending on eligibility.
2026 TFSA limit
The annual TFSA limit for 2026 is $7,000.
The mistake that causes problems
Overcontributions. CRA charges a tax of 1 percent per month on the highest excess amount for each month it stays in the account.
Practical rule
Do not contribute until you confirm the exact TFSA room in CRA My Account.
A parent move that works
Gift them cash and let them contribute themselves. Once they are 18, the minor child attribution issue no longer applies to TFSA contributions.
2) FHSA. The best new tool for first home savings. Easy to mess up.
Who can open an FHSA
Generally, they must be 18 or older, a Canadian resident, and a first time home buyer under the FHSA definition. In some provinces, contract capacity can affect when institutions allow an account to be opened.
FHSA limits
Up to $8,000 per year, with a $40,000 lifetime maximum.
The key detail people miss
FHSA room starts in the year the account is first opened. It does not build automatically like many people assume with TFSAs. If you want 2026 room, the account needs to be opened in 2026.
Overcontributions still hurt
FHSA excess amounts are also subject to a 1 percent per month penalty.
A simple parent priority
If home ownership is realistic within the next five to ten years, FHSA is often the first account to prioritize because it combines deductible contributions with tax free qualifying withdrawals.
Attribution in plain English
Parents can gift money to an adult child to contribute to an FHSA. There is no attribution of FHSA income back to the parent. The deduction belongs to the child, not the parent.
Timing the FHSA deduction
FHSA deductions can be claimed in a later year. If your child contributes early while income is low, they can defer the deduction until their tax rate is higher.
3) RRSP at 18. Usually not first. Sometimes smart.
Earned income is the gate
RRSP room is based on earned income after filing a tax return, generally up to 18 percent of earned income.
2026 RRSP maximum
The annual RRSP dollar limit for 2026 is $33,810.
When RRSPs make sense for young adults
RRSPs are rarely the first priority when income is low. They become useful when your child has meaningful earned income, a real tax rate to reduce, and no high interest debt.
Good parent habit
Have them file tax returns early in life. Even low income years help build RRSP room for the future.
4) File the tax return. Even if income is almost zero.
This matters long term. Filing creates the tax record CRA uses to calculate benefits, credits, and carryforwards.
Why filing at 18 matters
It creates a Notice of Assessment.
It establishes RRSP room.
It tracks tuition credits for future use.
GST HST credit timing
The credit generally applies starting at age 19, with limited exceptions. Filing at 18 ensures CRA has everything on file so payments start automatically when eligible.
Tuition planning
Up to $5,000 of the current year federal tuition amount can be transferred to a parent, grandparent, or spouse, but only after the student uses what they need to reduce their own tax to zero. Prior year amounts cannot be transferred.
5) CRA My Account. Set it up. Lock it down.
CRA My Account lets your child manage taxes and benefits online.
Registration
Follow CRA’s sign up steps carefully.
Security
Multi factor authentication is mandatory. Turn it on. Never share codes.
Scam rule to teach early
CRA does not demand immediate payment or threaten arrest. If something feels urgent or aggressive, pause and verify.
6) Benefits and family cash flow. What changes for parents.
Canada Child Benefit
CCB ends when a child turns 18. This can be a real cash flow change. Plan for it.
7) If your child works. Small tax moves that matter.
Pay slips and tax forms
Keep T4s and any other slips. File with them.
Student deductions and credits
There are many. Use CRA’s student checklist to avoid missing anything.
Student loan interest reality
Federal Canada Student Loan interest was eliminated starting April 1, 2023. Some provincial or older interest may still exist. Check carefully.
8) Business owners. Hiring your child at 18. Do it right or do not do it.
This is where CRA scrutinizes closely.
Make it real work
The work must exist, be documented, and make business sense.
Pay a reasonable wage
Compensation must be defensible and supported.
Employee or contractor
Misclassification creates payroll problems. Use CRA guidance.
CPP timing
CPP deductions start with the first pay dated in the month after the employee turns 18.
EI rules for related persons
Employment with related persons may be non insurable for EI unless CRA accepts it as arm’s length like.
Reporting matters
If you pay wages, you generally need proper payroll remittances and a T4.
Audit triggers
Large pay with vague duties, no time tracking, no remittances, no consistency.
9) Gifting and attribution. Where parents get confused.
The clean rule
Attribution rules target transfers to related minors. Once your child is 18, the minor child attribution issue generally stops being the problem.
Important nuance
Other rules can still apply in complex planning, such as certain dividend situations. Get advice before moving large sums.
10) Banking and credit. Build it slowly.
First credit card
Low limit. Autopay the full balance. Never carry a balance.
Co signing
Do not co sign without a clear plan. It can quickly become your debt.
11) Investing basics for new adults.
Simple rules that prevent long term damage.
No leverage.
No options.
No day trading.
Automate contributions.
Use diversified, low fee investments.
Teach process, not stock picks.
Parent checklist by timeline
Before 18
Confirm they have a SIN.
Teach basic CRA scam awareness.
Build a simple budgeting habit.
At 18
Open CRA My Account with MFA.
Confirm TFSA room before contributing.
Open an FHSA in the year you want room to start, if home ownership is realistic.
First 90 days
Start TFSA contributions slowly.
If they work in your business, set up proper payroll and documentation.
Begin building credit carefully.
First tax season after 18
File the tax return even if income is low.
Transfer tuition correctly if applicable.
Review benefit eligibility as they approach 19.
Action checklist
- Confirm TFSA room in CRA My Account before any deposit.
- Open an FHSA in the same year you want the $8,000 room to begin.
- File the first tax return to lock in tuition tracking and future RRSP room.
- Teach CRA scam rules early.
- If hiring your child, run real payroll with CPP starting after age 18 and check EI rules.
FAQs
Does TFSA room start at 18 in Canada
Yes. If the individual is 18 or older, a Canadian resident, and has a SIN.
What is the TFSA limit for 2026
$7,000.
Can an 18 year old open an FHSA
Generally yes, if they meet the residency and first time home buyer criteria.
What are the FHSA limits
$8,000 per year and $40,000 lifetime.
Should an 18 year old file a tax return with little income
Often yes. It establishes the tax record and supports future credits and benefits.
When does CPP start if you hire your child
With the first pay dated in the month after they turn 18.
Do you deduct EI when hiring your child
Possibly not. Related person employment can be non insurable unless CRA accepts it as arm’s length like.
Can parents gift money to an 18 year old for TFSA or FHSA
Generally yes. The minor child attribution issue is no longer the concern once the child is 18.
The Bottom Line
Setting this up correctly from day one saves years of cleanup. If you want help structuring accounts, filing first returns, or hiring your child properly in a corporation, YBL can help you handle the rules, payroll, documentation, and account strategy so you do not learn the hard way.