Ontario Marginal Tax Rate
| Component | Bracket Rate | Tax on Additional Income |
|---|---|---|
| Federal income tax | — | — |
| Ontario income tax | — | — |
| Ontario surtax (if applicable) | — | — |
| CPP contributions | Up to 5.95% + 4.00% CPP2 | — |
| EI premiums | 1.64% | — |
| Ontario Health Premium | Tiered | — |
| Total deducted from additional income | — | |
What This Calculator Does
The Ontario Marginal Tax Rate Calculator tells you the combined rate you'll pay on an additional dollar (or chunk) of income in 2026 — not just your average rate across all earnings. This is the number that matters when deciding whether to take on extra work, make an RRSP contribution, accept a bonus, or withdraw from a registered account.
It combines:
- Federal income tax — using the 2026 brackets from CRA (14% to 33%)
- Ontario income tax — using the 2026 provincial brackets (5.05% to 13.16%)
- Ontario surtax — an additional 20% or 56% layered on top of provincial tax once it exceeds $5,818 or $7,446
- CPP contributions — both CPP1 (5.95% up to $71,200 YMPE) and CPP2 (4.00% between $71,200 and $81,500)
- EI premiums — 1.64% up to $65,700 maximum insurable earnings
- Ontario Health Premium (OHP) — a tiered levy on taxable income
Once it knows your total tax at the new income level versus the original, it computes what percentage of the additional amount goes to government — that's your marginal rate. It also shows your net kept (dollars in pocket) and your overall effective rate across total income for context.
How Marginal Tax Works in Ontario
Canada uses a progressive tax system: each slice of your income is taxed at a different rate. The rate that applies to the last dollar you earn is called the marginal rate. Your marginal rate is higher than your effective (average) rate — and understanding this distinction changes how you think about every extra dollar you earn.
Federal Brackets (2026)
- 14% on the first $58,523
- 20.5% on $58,523 to $117,045
- 26% on $117,045 to $181,440
- 29.29% on $181,440 to $258,482 (effective rate: 29% + 0.29% BPA phase-out)
- 33% on income above $258,482
The federal Basic Personal Amount is variable for 2026: $16,452 for most taxpayers, phasing down to $14,829 when net income exceeds $181,440. The credit is worth the BPA × 14%.
Ontario Brackets (2026)
- 5.05% on the first $53,891
- 9.15% on $53,891 to $107,785
- 11.16% on $107,785 to $150,000
- 12.16% on $150,000 to $220,000
- 13.16% on income above $220,000
Ontario also applies its Basic Personal Amount credit: $12,989 × 5.05% = approximately $656 off your Ontario tax.
Ontario Surtax — the Hidden Rate Boost
Once your Ontario basic tax (after BPA credit) exceeds $5,818, an additional 20% is added. Once it exceeds $7,446, another 36% stacks on top. This makes the effective Ontario marginal rate substantially higher than the headline bracket for mid-to-upper income earners. For example, in the 9.15% Ontario bracket where the first surtax threshold has been crossed, the effective Ontario rate becomes 9.15% × 1.20 = 10.98% on each additional dollar.
CPP and EI — Marginal Payroll Contributions
If your income is still below the CPP Year's Maximum Pensionable Earnings ($71,200) or Maximum Insurable Earnings for EI ($65,700), each additional dollar of employment income also triggers CPP and EI deductions. CPP1 costs you 5.95 cents on every dollar, CPP2 costs 4.00 cents on earnings from $71,200 to $81,500. EI costs 1.64 cents per dollar up to the ceiling. These are hard to ignore at lower incomes — at $50,000, CPP and EI alone add roughly 7.59 percentage points to your marginal rate.
Example Calculations — Real Ontario Numbers (2026)
The following examples show what happens to $10,000 of additional employment income at three common income levels. All figures use 2026 rates sourced from CRA and ESDC.
Example 1: $55,000 → $65,000 (cross the federal bracket)
At $55,000 of current income, the next $10,000 straddles the $58,523 federal threshold:
- Federal tax on the first $3,523 (at 14%): $493.22
- Federal tax on the remaining $6,477 (at 20.5%): $1,327.79
- Ontario tax on $10,000 at 9.15% (bracket applies throughout): $915.00
- CPP1 on $10,000 at 5.95%: $595.00
- EI on $10,000 at 1.64%: $164.00
- OHP: minimal additional at this income range
Approximate combined marginal rate: ~35–37%. You keep roughly $6,300–$6,500 of the $10,000.
Example 2: $80,000 → $90,000 (mid-range, CPP2 zone)
At $80,000 current income, you are past CPP1's YMPE ($71,200) and earning CPP2-eligible income. For the $10,000 added:
- Federal tax at 20.5%: $2,050.00
- Ontario tax at 9.15% (with surtax): approximately $1,098 (surtax applies)
- CPP2 on $1,500 (up to $81,500 YAMPE ceiling): $60.00
- EI: capped out past $65,700, so $0
Approximate combined marginal rate: ~33–34%. You keep roughly $6,600–$6,700.
Example 3: $200,000 → $210,000 (top brackets, Ontario surtax fully active)
At $200,000, you are in the 29.29% federal bracket and the 12.16% Ontario bracket. The Ontario surtax is fully engaged (both 20% and 36% layers).
- Federal tax at 29.29%: $2,929.00
- Ontario basic tax at 12.16%: $1,216.00
- Ontario surtax (56% of Ontario basic increment): approximately $681
- CPP: capped out, $0
- EI: capped out, $0
- OHP: at max tier, $0 incremental
Approximate combined marginal rate: ~48–50%. You keep roughly $5,000–$5,200.
| Income Range | Federal Bracket | Ontario Bracket | Approx. Marginal Rate | Net Kept of $10K |
|---|---|---|---|---|
| $55K → $65K | 14% / 20.5% | 9.15% | ~35–37% | ~$6,300 |
| $80K → $90K | 20.5% | 9.15% + surtax | ~33–34% | ~$6,650 |
| $200K → $210K | 29.29% | 12.16% + full surtax | ~48–50% | ~$5,100 |
Note: "Approximate" figures reflect the incremental tax method used by this calculator. Minor differences from year-end T1 filing may occur due to rounding and mid-bracket transitions. For tax-planning decisions, verify with a CPA or tax advisor.