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Your sole-proprietor tax estimate.

For 2026 Saskatchewan residents whose only personal income comes from one business they own entirely. Enter your figures below to estimate income tax and CPP.

Your figures stay in this browser tab. No account or upload. Refreshing or closing the page clears your entries.

Step 1 of 4 · 2026 · Canadian dollars

Start with your business income.

Use annual amounts. Blank amount fields count as zero. Enter only eligible costs and keep your supporting records.

Income category

This sets the T1 income-line reference. Tax rates are the same.

Annual sales or professional feesCAD

Include sales taxes and unpaid invoices earned this year. Professional fees include taxable work in progress. T2125 3A / 3H

Sales taxes included aboveCAD

GST/HST and PST already included in sales. Do not subtract them again if your sales figure was already net of tax. T2125 3B / 3I

Returns, discounts and allowancesCAD

Enter positive amounts already included in your sales figure. T2125 3B / 3I

Other taxable business incomeCAD

Eligible business assistance or other operating income. Leave out personal income and asset-disposal adjustments. T2125 8230

Inventory and cost of goods sold, if applicable

Use consistent tax inventory values and exclude recoverable GST/HST. Professional income does not use this T2125 section.

Opening inventoryCAD

Tax cost of stock on hand at the start of the year. T2125 8300

Purchases for resale or raw materialsCAD

Net business purchases, excluding recoverable GST/HST. Do not claim the same cost again under expenses. T2125 8320

Direct production wagesCAD

Wages included in the cost of goods. Do not also claim them under employee wages. T2125 8340

Direct subcontract costsCAD

Subcontracts included in producing goods; do not duplicate them elsewhere. T2125 8360

Other direct inventory costsCAD

Other eligible costs of goods. Keep a supporting breakdown. T2125 8450

Closing inventoryCAD

Tax cost of stock remaining at year-end, including applicable work in progress. T2125 8500

Who can use this calculator?

You own 100% of one unincorporated business, with no partner. All of your personal income comes from this business.
You are a Canadian resident all year and a Saskatchewan resident on December 31, 2026.
You are aged 18–64 throughout 2026, with 12 months of CPP contributions and no CPP pension, disability or exemption adjustments.
You use calendar-year accrual reporting, without the GST quick method, special reserves or asset-disposal adjustments.
This is not a farming, fishing, rental, partnership or corporate activity.

You will confirm these conditions before calculating. Other situations need a tailored estimate.

What this estimate includes—and leaves out

This calculator is a T2125 preparation aid and general planning tool, not the official form or tax-filing software. It calculates business profit, federal and Saskatchewan income tax, and both self-employed CPP components under the stated scope.

Only basic personal and base CPP non-refundable credits are included. Canada Workers Benefit, other refundable benefits, spouse/dependant, disability, tuition, medical and donation claims can change your final return. FHSA, child-care, special loss relief, alternative minimum tax, voluntary self-employed EI, interest and penalties are not calculated.

GST/HST and Saskatchewan PST payable are separate. The sales-tax field only removes taxes already included in revenue. Enter a separately calculated allowable CCA claim and passenger-vehicle lease/interest amount where applicable; asset classes, acquisition incentives, recapture and terminal losses are outside this tool.

Home-office costs are allocated by space and time and cannot create or increase a business loss. The vehicle schedule handles one vehicle. Amounts and tax components are rounded to cents; filed-return rounding may differ slightly.

Figures remain in this tab’s memory, without being stored on this website or sent to Mazier CPA. Do not enter names, SINs, account numbers or confidential documents. An inquiry does not include the figures you entered.

2026 rates, calculation approach and official sources

Prepared with automated assistance. Sources checked September 23, 2026. This is a 2026 planning estimate; T2125 line references and Schedule 8 treatment use the latest available 2025 forms and should be rechecked when 2026 filing forms are issued.

Federal rates are 14%, 20.5%, 26%, 29% and 33%, with bracket ceilings of $58,523, $117,045, $181,440 and $258,482. The federal basic personal amount is $16,452, reduced to $14,829 as net income rises between $181,440 and $258,482.

Saskatchewan rates are 10.5%, 12.5% and 14.5%, with bracket ceilings of $54,532 and $155,805. The basic personal amount is $20,381.

Self-employed CPP is calculated on business profit before CPP and RRSP deductions: base plus first additional CPP is 11.9% between $3,500 and $74,600, to a maximum of $8,460.90. CPP2 is 8% between $74,600 and $85,000, to a maximum of $832. Half the base CPP contribution supports a tax credit; that same half plus both full enhanced contributions is deducted from income. An allowable RRSP deduction is limited here to remaining positive income. No Canada employment amount is claimed.

Review your records, deductions and applicable credits with Mazier CPA before filing or relying on an estimate for a tax decision.