Most Canadians who save have the same question sooner or later: should the next dollar go into a Tax Free Savings Account or a Registered Retirement Savings Plan? The honest answer is that it depends on a few facts about you, and those facts can be checked. This guide walks through how each account works, the 2026 limits, and a simple way to think about which one to fund first.
Both accounts shelter investment growth from tax. The difference is when the tax is paid. That single difference drives almost every other part of the decision.
How a TFSA works
A TFSA is funded with money you have already paid tax on. You get no deduction when you contribute. In exchange, growth inside the account is not taxed and withdrawals are not taxed. You can take money out at any time and for any reason.
The CRA is also clear that income earned in a TFSA and withdrawals from it do not affect your federal income tested benefits and credits, naming Old Age Security, the Guaranteed Income Supplement (GIS), Employment Insurance, the Canada child benefit, the Canada workers benefit and the GST credit.
2026 TFSA limit and how room is calculated
The CRA lists the TFSA dollar limit at $7,000 for 2026, the same as 2024 and 2025. But your room in any year is usually more than the annual limit. According to the CRA's TFSA room calculation, available room is:
- the current year's dollar limit, plus
- any unused room from earlier years, plus
- the amount of any withdrawals you made in the previous year, minus
- contributions you have already made this year.
The key detail is timing. A withdrawal does not give you room back right away. You regain that amount as new room on January 1 of the following year.
How an RRSP works
An RRSP works the other way around. Contributions are deductible, so they reduce your taxable income in the year you claim them. Growth inside the plan is sheltered while it stays there. When money comes out, the whole withdrawal is taxable income in that year.
The CRA's page on tax rates on RRSP withdrawals shows that the institution withholds tax at the time of withdrawal (10%, 20% or 30% outside Quebec, depending on the amount), and the withdrawal must be included on your return for that year. Withholding is only a prepayment. Your actual tax depends on your total income for the year.
2026 RRSP limit and the 18% rule
Your new RRSP room for a year is based on your earned income from the year before. The CRA describes the RRSP deduction limit as your unused room carried forward, plus the lesser of 18% of your previous year's earned income or the annual RRSP dollar limit, minus your pension adjustment if you belong to a workplace pension plan, with a few further adjustments.
The CRA lists the RRSP dollar limit at $33,810 for 2026 (it was $32,490 for 2025). Since 18% of about $187,800 is $33,810, most people's new room is set by the 18% rule rather than the dollar cap. Your notice of assessment and your CRA My Account show the exact figure, and that is the number to rely on.
Tax on the way in and on the way out
Here is the core idea. Ignore fees and assume the same investments grow at the same rate in either account. If your tax rate when you contribute is the same as your tax rate when you withdraw, the TFSA and the RRSP end up giving you roughly the same after tax amount. The RRSP deduction you get today is, in effect, paid back when you withdraw.
The accounts only diverge when those two rates differ.
- If your marginal rate today is higher than the rate you expect when you withdraw, the RRSP usually comes out ahead. You get the deduction at a high rate and pay tax later at a lower one.
- If your marginal rate today is lower than the rate you expect later, the TFSA usually comes out ahead. You pay tax now at the lower rate and never again.
- If the rates are similar, the two are close, and flexibility often decides it.
There is one practical condition for the RRSP to work as intended. The tax refund it creates needs to be saved or invested, not spent. If the refund disappears into everyday spending, much of the RRSP's advantage disappears with it.
The effect on income tested benefits
The marginal rate rule of thumb only looks at income tax. Several government benefits are reduced as income rises, and that can change the picture.
Old Age Security recovery tax
If your net income in retirement is above a threshold, part of your OAS pension is repaid through the OAS recovery tax. The repayment is 15% of income above the minimum threshold. The CRA lists that threshold as $93,454 for 2025 income (repaid from July 2026 to June 2027) and $95,323 for 2026 income (repaid from July 2027 to June 2028).
RRSP and RRIF withdrawals count toward that income. TFSA withdrawals do not. Someone who expects a large registered balance plus a workplace pension may find that heavy RRSP saving pushes later income toward the recovery zone.
GIS in retirement
GIS is aimed at lower income seniors and is reduced as other income rises. For someone who expects modest retirement income, taxable RRSP withdrawals can reduce GIS, while TFSA withdrawals do not affect it according to the CRA. This is one of the clearest cases where a lower earner may prefer the TFSA.
The Canada child benefit
The CCB uses your adjusted family net income from the previous year's return. An RRSP deduction lowers net income, so for families receiving the CCB, an RRSP contribution can have a second effect beyond the tax refund: it may increase the following year's benefit. The size of that effect depends on your income and number of children, so it is worth calculating rather than assuming.
Buying a first home: the HBP and the FHSA
If a first home is on the horizon, a third account belongs in the conversation.
The First Home Savings Account combines features of both. Contributions are generally deductible, and qualifying withdrawals for a first home are not taxable. The CRA sets participation room at $8,000 in the year you open your first FHSA, with a $40,000 lifetime limit and up to $8,000 of unused room carried forward. If you never buy, a direct transfer from the FHSA to your RRSP does not use up your RRSP room, provided the conditions on that CRA page are met.
The Home Buyers' Plan lets you withdraw up to $60,000 from your RRSP toward a qualifying home, which you then repay to the RRSP over 15 years. Temporary rules currently delay the start of repayment for some first withdrawals, and the CRA page sets out which years qualify. You can use both the HBP and the FHSA for the same qualifying home, as long as you meet the conditions of each.
For many first time buyers, the FHSA is worth considering before either the TFSA or the RRSP, because it offers a deduction going in and no tax coming out for its intended use. You can read more on our FHSA page.
Common mistakes to avoid
Recontributing a TFSA withdrawal in the same year. This is the most common TFSA error. Because withdrawn amounts only come back as room on January 1 of the next year, putting the money back in the same calendar year can create an excess if you have no other room.
Overcontributing to a TFSA. The CRA states that any excess amount in a TFSA is taxed at 1% per month for as long as it remains in the account. Withdraw an excess promptly, and keep your own records rather than relying only on the figure in My Account, which can lag recent transactions.
Overcontributing to an RRSP. The CRA applies a tax of 1% per month on contributions that exceed your deduction limit by more than $2,000. That cushion is not a target; it is a margin for error.
Spending the RRSP refund. As noted above, the refund is part of how the RRSP works.
Holding only cash. Either account can hold a range of qualified investments. A shelter does little work if the money inside it barely grows over a long horizon.
Ignoring benefits. Looking only at tax brackets can miss the OAS, GIS and CCB effects described above.
Simple scenarios by income
The scenarios below are illustrations, not recommendations. Provincial tax rates, pensions, family situation and future rules all matter, and the right order for you may differ.
| Situation | Often worth a closer look | Why |
|---|---|---|
| Early career, lower income, expects income to rise | TFSA first | Today's rate may be lower than later; RRSP room keeps carrying forward for higher income years |
| Saving for a first home within a few years | FHSA first, then TFSA or RRSP | Deduction going in, no tax on a qualifying withdrawal |
| Middle income, no workplace pension | A mix of both | Rates now and later may be similar; flexibility and benefits can break the tie |
| Higher income, expects lower income in retirement | RRSP first | Deduction at a high rate, withdrawals possibly at a lower one |
| Family receiving the CCB | Compare both carefully | An RRSP deduction may affect next year's benefit as well as this year's tax |
| Expects modest retirement income and may qualify for GIS | TFSA weighted | TFSA withdrawals do not reduce federal income tested benefits |
Many households end up using both accounts. A common pattern is to make RRSP contributions sized to the deduction that is most valuable, and direct the rest, and often the refund, into the TFSA.
How to decide in practice
Start with three questions. What is your marginal tax rate this year? What do you realistically expect your taxable income to be when you draw on the money? And how likely are you to need the money before retirement? Then check your actual room in CRA My Account before you contribute.
If those questions are hard to answer, that is normal. Projecting retirement income depends on pensions, the age you stop working and how you plan to draw down your savings. A licensed advisor can model these with you using your real numbers, and coordinate with your accountant where tax filing is involved. To compare the accounts in more detail, see our pages on the TFSA and the RRSP.