Over half of every additional dollar you earn goes to tax. Here's how to change that.
If you earn over $246,752 in Ontario, the federal and provincial government together take 53.53 cents of every additional dollar you earn. That is not a marginal curiosity — it is the primary financial reality of your income bracket, and it compounds every year you don't address it.
The good news: this rate is highly reducible using strategies that are not aggressive, not grey-area, and not dependent on complex offshore structures. Every strategy in this article is CRA-approved, used widely by high-income professionals across Canada, and available to you today.
| Ontario Income Level | Marginal Rate | Tax on Next $10,000 | RRSP Saves (per $10K) |
|---|---|---|---|
| $100,000–$110,000 | 43.41% | $4,341 | $4,341 |
| $150,000–$160,000 | 51.97% | $5,197 | $5,197 |
| $220,000–$230,000 | 53.53% | $5,353 | $5,353 |
| $300,000+ | 53.53% | $5,353 | $5,353 |
Max RRSP contributions — every year, without exception
At Ontario's top marginal rates, every dollar contributed to your RRSP saves 46–53 cents in immediate tax. The 2025 RRSP limit is $31,560 — the highest in Canadian history. A full contribution at the 53.53% rate generates a $16,891 tax refund. That refund, reinvested in your TFSA, generates another $7,256 in after-tax wealth.
The critical mistake: contributing to RRSP in low-income years and not contributing in peak-earning years. The strategy is to maximize contributions precisely when your marginal rate is highest — meaning contributions in your $200K–$400K earning years are worth nearly twice what they will be in retirement.
Spousal RRSP contributions to equalize retirement income
If your spouse earns significantly less than you, contributing to a spousal RRSP moves future retirement income from your tax bracket to theirs. You use your contribution room — and get the deduction at your 53.53% rate — but when the funds are withdrawn in retirement, they are taxed in your spouse's hands at their rate (often 20–30%).
A couple where one spouse earns $300K and the other earns $60K can save $8,000–$14,000 annually in retirement taxes by equalizing income through spousal RRSP contributions over their working years. The 3-year attribution rule applies: spousal RRSP withdrawals within 3 years of the last contribution are attributed back to the contributor.
Hold investments in the right account type
Account type determines how investment income is taxed. At 53.53%, holding the wrong investment in the wrong account is expensive. The hierarchy:
- TFSA first: High-growth assets (equities, ETFs) — all growth and dividends tax-free forever
- RRSP second: Fixed income, REITs, bonds — interest income is sheltered from your marginal rate
- Non-registered last: Canadian eligible dividends (taxed at ~25–39%) and capital gains (50% inclusion) — the most tax-efficient income types if you must hold anything here
- Never in non-reg: Foreign dividends, interest income, bond funds — these generate fully taxable income at 53.53%
A $500,000 non-registered portfolio generating 4% in interest income pays $10,700/year in unnecessary tax vs. a TFSA holding the same asset paying $0. Over 20 years, that's $214,000 plus compounding.
Shift income to capital gains — the 50% inclusion advantage
Employment and interest income are taxed at 100% inclusion — every dollar is fully taxable. Capital gains enjoy a 50% inclusion rate for gains under $250,000 (2/3 inclusion above that threshold as of 2024). At Ontario's top rate, a capital gain is taxed at 26.76% vs. 53.53% for salary — essentially half the rate.
Practical applications: selling appreciated investments instead of generating interest income, structuring business sale proceeds as capital gains (potentially eligible for the $1.25M Lifetime Capital Gains Exemption on qualifying shares), and timing asset dispositions across tax years to stay below the $250K threshold.
Starting in 2024, capital gains above $250,000 per year are taxed at a 2/3 inclusion rate rather than 1/2. For gains below this threshold, the 50% inclusion still applies. Planning large asset dispositions to stay below $250K per year — or spreading them across multiple years — remains a key tax strategy.
Incorporate and retain earnings at the 9–12.2% corporate rate
If you are self-employed, a contractor, or eligible for a professional corporation, incorporation allows you to leave earnings inside the corporation taxed at 9% (federal) to 12.2% (combined Ontario) — vs. your personal 53.53% rate. The deferral on $100K retained is $41,330 per year in Ontario.
This is the single highest-impact strategy for eligible earners — and the one most often underutilized simply because the decision to incorporate is deferred. Every year of delay at $300K+ income costs approximately $40,000 in forgone tax deferral.
Audit every eligible deduction — most high earners miss several
Many high earners leave significant deductible expenses unclaimed, particularly if their situation has changed (new role, home office, vehicle use, professional development). In 2025, fully audit your eligibility for:
- Home office expenses — detailed method (not the flat rate) if you genuinely work from home; utility allocation, maintenance, mortgage interest proportion
- Vehicle expenses — employment-use percentage of actual costs including insurance, fuel, repairs, and CCA if owned
- Professional dues and subscriptions — often overlooked in high-income professional filings
- Investment counsel fees — deductible when paid to manage non-registered investment income
- Carrying charges — interest on money borrowed to earn investment income
- Moving expenses — if you relocated for work in the past 24 months
Donate appreciated securities — the double tax benefit
Donating publicly traded securities directly to a registered charity (rather than selling them and donating cash) eliminates the capital gains tax on the appreciated amount entirely, while still generating the full donation tax credit. At Ontario's top rate, this creates a double tax benefit.
Example: you own $50,000 of stock with a $20,000 ACB. If you sell and donate cash, you pay ~$5,352 in capital gains tax on the $30,000 gain. If you donate the shares directly, you pay $0 in capital gains tax and receive a donation receipt for the full $50,000 — worth $26,765 in tax credits at the 53.53% rate.
Income deferral and timing — the strategy most advisors overlook
Many high earners have some control over when income is recognized — bonuses, consulting invoices, stock option exercises, deferred compensation, and business sale timing. Deferring income from a high-income year to a lower-income year can mean the difference between paying 53.53% and paying 43.41% on the same dollars — a 10-point rate difference.
Stock option timing is particularly powerful: the spread between grant price and FMV is taxable as employment income when exercised. Exercising in a year when total income is lower — or spreading exercises across years — can save substantial amounts on what is often one of the largest single income events in a high earner's life.
Combining all eight: what this looks like in practice
None of these strategies is individually exotic. The compounding power comes from implementing several simultaneously, coordinated across your salary, investments, corporation, and retirement accounts. A $300K Ontario earner who implements strategies 1, 2, 3, 5, and 6 in the same year can realistically reduce their effective tax rate from 53.53% marginal to an effective rate closer to 38–42% — a difference of $25,000–$35,000 annually in after-tax income.
The key word is "coordinated." RRSP contributions interact with marginal rate planning. Incorporation changes the optimal RRSP strategy. Capital gains timing affects income splitting. Every lever affects the others — which is why these strategies need to be modelled as a unified system, not implemented independently.