New Brunswick levies provincial income tax on top of federal income tax. The 2026 combined top marginal rate is 52.50%, applied at the top federal bracket. New Brunswick has four provincial brackets and one of the higher Atlantic combined top rates at 52.5%. The province offers a non-refundable Low-Income Tax Reduction for residents below specified income thresholds. The calculator above applies both layers of tax for 2026 and shows the combined total, marginal rate, average rate, and after-tax income.
How much income tax does a New Brunswick resident pay on $65,000?
At $65,000 of taxable income in 2026, a New Brunswick resident owes approximately $7,218 in net federal income tax and $6,027 in net provincial tax, for a combined total of approximately $13,245. The after-tax income is approximately $51,755. The combined marginal rate at $65,000 is approximately 34.50%.
How New Brunswick income tax is calculated
Federal component
The federal calculation is identical across all provinces and territories. Five brackets apply for 2026: 14% on the first $58,523, 20.5% on $58,524 to $117,045, 26% on $117,046 to $181,440, 29% on $181,441 to $258,482, and 33% on income above $258,482. The federal Basic Personal Amount is $16,452, generating a non-refundable credit of approximately $2,303 at the 14% rate. The BPA phases down to $14,829 for incomes above $258,482.
New Brunswick provincial brackets
New Brunswick applies 9.4% on the first $52,333; 14.0% on income from $52,334 to $104,666; 16.0% on income from $104,667 to $193,861; and 19.5% on income above $193,861. The Basic Personal Amount is $13,664, generating a non-refundable credit of approximately $1,284 at the 9.4% lowest-bracket rate. Both layers of tax apply to the same taxable income, and credits are computed independently.
Combined marginal rate
The combined marginal rate at any income equals the federal marginal rate at that income plus the NB marginal rate at that income. At the top of the schedule, the 33% federal rate combined with the 19.5% NB rate produces the 52.50% top combined marginal rate. The combined marginal rate determines the tax cost of an additional dollar of income, RRSP contribution, or RRIF withdrawal.
Verified against source
Bracket thresholds and rates: New Brunswick Department of Finance and Treasury Board. Federal brackets and Basic Personal Amounts: Canada Revenue Agency — Canadian income tax rates for individuals. Payroll formula reference: CRA T4127 Payroll Deductions Formulas, 122nd Edition (January 2026).
New Brunswick tax brackets at a glance
| Taxable income | Provincial rate |
|---|---|
| $0 – $52,333 | 9.4% |
| $52,334 – $104,666 | 14.0% |
| $104,667 – $193,861 | 16.0% |
| $193,862 + | 19.5% |
Worked example: a $100,000 earner in New Brunswick
At $100,000 of taxable income, federal tax is calculated by applying the 14% rate to the first $58,523 ($8,193) and the 20.5% rate to the remaining $41,477 ($8,503), for gross federal tax of approximately $16,696. The federal BPA credit reduces this by 14% of $16,452, or approximately $2,303, leaving net federal tax of approximately $14,393.
Provincial tax is calculated by applying the NB bracket schedule to the same $100,000 of taxable income and subtracting the NB BPA credit of approximately $1,284. The combined federal-plus-provincial total at $100,000 is the figure shown in the “Combined tax” row of the calculator.
Edge cases and rules not captured
New Brunswick Low-Income Tax Reduction
New Brunswick offers a non-refundable Low-Income Tax Reduction for residents with net family income below threshold amounts set annually. The reduction can eliminate provincial tax payable for low-income residents but does not produce a refund. The credit is not modelled in the base bracket calculation above.
RRSP and RRIF withdrawals
RRSP and RRIF withdrawals are taxable income in the year received and are taxed at the resident’s combined marginal rate. A New Brunswick resident drawing a $40,000 RRIF withdrawal at $50,000 of other income faces taxable income of $90,000 and a combined marginal rate set by the bracket schedule. The withdrawal increases tax payable by the marginal rate multiplied by $40,000.
Capital gains and dividends
Capital gains are 50% taxable up to $250,000 of net capital gains per year (2026 inclusion threshold). Eligible Canadian dividends receive a federal dividend tax credit and a NB dividend tax credit; non-eligible dividends receive smaller credits. The calculator above reflects ordinary income (employment, pension, RRSP/RRIF) and does not adjust for the dividend gross-up or the capital gains inclusion rate.
Quebec residents are calculated separately
Quebec residents file a separate provincial return with Revenu Québec and are subject to a 16.5% federal tax abatement that reduces federal tax payable. New Brunswick residents file a single combined federal-and-NB return with the CRA, and the abatement does not apply.
Federal and New Brunswick tax interaction
Federal income tax applies to all Canadian residents regardless of province or territory of residence. The federal brackets and rates are the same for all Canadians: 15% on the first $57,375, 20.5% on $57,376 to $114,750, 26% on $114,751 to $177,882, 29% on $177,883 to $253,414, and 33% above $253,414 (2025 rates). New Brunswick tax is calculated separately and added to the federal amount to arrive at the combined tax. The combined marginal rate at any income level is the sum of the federal marginal rate and the applicable New Brunswick bracket rate. The federal Basic Personal Amount (BPA) is $16,129 for 2025, generating a 15% federal credit of $2,419. New Brunswick’s own basic personal amount generates a separate provincial credit at the lowest New Brunswick rate.
Using the calculator for RRSP decisions in New Brunswick
The most practical use of the combined income tax calculator for New Brunswick residents is to estimate the immediate tax saving from an RRSP contribution. Enter the current taxable income, note the marginal rate, then subtract the planned RRSP contribution amount and note the revised tax. The difference is the expected refund from the RRSP contribution. For example, if the marginal rate is 28% at $70,000 of income, a $5,000 RRSP contribution generates a combined tax saving of approximately $1,400 ($700 federal + $700 provincial, depending on the New Brunswick rate at that bracket). This calculation is the correct way to assess an RRSP contribution — not the average rate.
Residency and New Brunswick taxation
Province of residence for tax purposes is determined by where the individual is ordinarily resident on December 31 of the tax year. A person who moved from New Brunswick to another province on December 15 is still taxed as a New Brunswick resident for the full year (except for the provincial portion, which follows the province of residence on December 31). Individuals who move during the year must ensure they update their address with CRA by December 31 to be taxed under the correct provincial rates. This is particularly relevant for New Brunswick residents in employment that involves frequent inter-provincial moves.