Business
GST/HST, payroll, incorporation tax
Canadian Small Business Tax and Payroll Calculators
Canadian small businesses benefit from the Small Business Deduction (SBD), which taxes the first $500,000 of active business income at a combined federal-provincial rate of approximately 12–13% (varying by province), compared to the general corporate rate of 26–31%. This significant tax deferral advantage is the primary reason many self-employed professionals incorporate.
Business owners must register for GST/HST once annual taxable revenue exceeds $30,000. The Quick Method of accounting can simplify filing for businesses under $400,000 in revenue, often resulting in net tax savings since you keep the difference between collected HST and the reduced remittance rate.
Employer payroll obligations include remitting CPP (matching employee contributions), EI (1.4x the employee premium), and income tax withholdings. Remittance frequency depends on your average monthly payroll — from quarterly for small payrolls to twice monthly for large ones.
GST/HST Business Calculator Canada
Calculate GST/HST to remit, input tax credits and net tax for your Canadian business. Covers all provinces, territories and filing periods in detail.
Self-Employment Tax Calculator Canada 2026
Calculate income tax and double CPP contributions for self-employed Canadians. Updated for 2026 rates. Free, private — your data stays on your device.
Canadian Payroll Calculator 2026
Calculate total employer costs including salary, CPP, EI and benefits for Canadian employees. Updated for the 2026 contribution rates and maximums.
Profit Margin Calculator
Calculate gross, operating and net profit margins for your business. Enter your revenue and costs to see margin percentages and dollar amounts.
Employee vs Contractor Calculator Canada
Compare the true cost of hiring an employee versus an independent contractor in Canada. Includes CPP, EI, benefits and payroll tax obligations.
HST Quick Method Calculator Canada
Calculate GST/HST using the Quick Method versus the standard remittance method for your Canadian small business. See which option saves you more.
Incorporation Tax Calculator Canada 2026
Compare personal versus corporate tax rates for Canadian small business income. See if incorporating saves you tax. Updated for the 2026 tax year.
CCA Depreciation Calculator Canada
Calculate Capital Cost Allowance for business assets using CRA depreciation classes. Find the correct CCA rate and claim for your tax return.
Invoice Calculator Canada
Calculate invoice totals with GST/HST, discounts and multiple line items for your Canadian business. Preview and tally amounts before you send.
Break-Even Calculator
Find how many units or how much revenue your business needs to break even. Enter your fixed costs, variable costs and selling price to see results.
Provincial Payroll Tax Calculator Canada
Calculate provincial payroll tax and employer health tax by Canadian province. See thresholds, rates and your annual obligation at a glance.
Markup Calculator
Calculate selling price from cost and your desired markup percentage. See the difference between markup and margin to price your products correctly.
Small Business Deductions Calculator Canada 2026
Estimate common tax deductions for self-employed Canadians and small businesses. Covers home office, vehicle and supply write-offs for 2026.
Frequently Asked Questions
Should I incorporate?
Incorporation makes sense when you consistently earn more than you spend personally, allowing you to defer tax on retained earnings at the low SBD rate. If you spend everything you earn, incorporation offers minimal tax benefit and adds compliance costs ($2,000–5,000/year).
What business expenses can I deduct?
Legitimate business expenses include office supplies, rent, vehicle costs (business-use portion), professional fees, advertising, insurance, and home office expenses. The CRA requires reasonable documentation for all deductions.