30 free calculators for Canadian businesses and their owners — corporate and personal tax, GST/HST, payroll, savings room and CRA deadlines. Every one uses 2025 tax year federal and provincial rates, works in every province, and needs no signup or email address.
All 30 calculators
Corporate Tax Calculator
Estimate the federal and provincial tax your Canadian corporation owes.
Open calculatorPersonal Income Tax Calculator
Estimate your federal and provincial income tax and take-home pay.
Open calculatorSalary vs Dividend Calculator
Compare paying yourself salary or dividends from your corporation.
Open calculatorBreak-Even Calculator
Find the units and revenue you need each month to cover your fixed costs, from your price and unit costs.
Open calculatorCapital Gains Tax Calculator
Estimate the tax on selling an investment or property: half the gain is taxed at your marginal rates on top of your other income.
Open calculatorCCA Calculator
Work out the CCA claim on an asset by class — accelerated first year or steady-state on the remaining balance.
Open calculatorChild Care Expense Deduction Calculator
Work out how much of your child care spending is deductible and the tax it saves.
Open calculatorCorporate Tax Instalment Calculator
Check whether your corporation must pay tax instalments and what each monthly or quarterly payment is.
Open calculatorCPP & EI Contribution Calculator
Work out your CPP base, CPP2 and EI contributions for the year, as an employee or self-employed.
Open calculatorDividend Tax Calculator
See the personal tax on an eligible or non-eligible dividend after the gross-up and dividend tax credits.
Open calculatorEmployee Cost Calculator
Turn a salary into the true annual cost of the hire: employer CPP match, EI at 1.4×, and Ontario EHT where it applies.
Open calculatorFHSA Room Calculator
Work out your 2025 First Home Savings Account room: $8,000 a year plus up to $8,000 of carryforward, inside the $40,000 lifetime limit.
Open calculatorGST/HST Calculator
Add GST, HST and PST to a price, or work out the price before tax from a total.
Open calculatorGST/HST Registration Checker
Check whether your sales have crossed the $30,000 small-supplier threshold and GST/HST registration is now mandatory.
Open calculatorHome Office Deduction Calculator
Work out your home office deduction under the detailed method: workspace percentage times eligible home costs.
Open calculatorLate-Filing Penalty Calculator
Work out the exact CRA late-filing penalty on a balance owing, for first-time and repeat late filers.
Open calculatorMarginal Tax Rate Calculator
See the combined federal and provincial tax rate on your next dollar of income, and your average rate, for any province.
Open calculatorMarkup & Margin Calculator
Turn a cost into a selling price by target margin or markup, and see both percentages so they never get confused.
Open calculatorMileage Allowance Calculator
Turn 2025 business kilometres into the tax-free allowance at the CRA's 2025 per-kilometre rates — 72¢ for the first 5,000 km, 66¢ after.
Open calculatorPayroll Remittance Schedule Checker
Find your CRA remitter category and when payroll remittances are due from your average monthly withholding.
Open calculatorPersonal Tax Instalment Checker
Check whether the $3,000 two-of-three-years test makes you owe CRA quarterly instalments, and how much.
Open calculatorGST/HST Quick Method Calculator
See what you would remit under the GST/HST Quick Method and how much of the tax you collected you keep.
Open calculatorRRSP Tax Savings Calculator
See what an RRSP contribution saves in tax at your income and province, measured as the true tax difference.
Open calculatorRRSP vs TFSA Calculator
Send the same pre-tax dollars down the RRSP route and the TFSA route, compound both, and compare what each is worth after tax.
Open calculatorSalary for RRSP Room Calculator
Find the T4 salary an owner-manager must pay this year to create a target amount of next year’s RRSP room.
Open calculatorSmall Business Deduction Grind Calculator
See how passive investment income shrinks the $500,000 small business limit and what the grind costs in extra corporate tax.
Open calculatorSelf-Employed Tax Calculator
Turn net self-employment income into the income tax and CPP you should be setting aside.
Open calculatorTake-Home Pay Calculator
Turn an annual salary into the net amount landing in your account each paycheque, for any province.
Open calculatorTax Deadline Calculator
Filing and payment deadlines for personal T1, self-employed, corporate T2 and GST/HST returns.
Open calculatorTFSA Contribution Room Calculator
Estimate your cumulative TFSA room from the year you turned 18 — up to $102,000 since 2009 — minus what you have contributed.
Open calculatorNo calculator matches that search.
Which calculator do you need?
If you are working out what your company owes on its profit, start with the corporate tax calculator, then the salary vs dividend calculator for how to pay yourself. If you are on a payroll, the personal income tax calculator shows what actually lands in your account.
The Sales tax tools add or back out GST, HST and PST for any province. Payroll & employment covers CPP, EI, employer costs and remittance schedules. Savings & investing works out RRSP, TFSA and FHSA room and what a contribution saves. Deadlines & compliance answers when things are due and what filing late costs.
Every tool is an estimate for planning. When you need the number you will actually file, talk to a professional tax accountant — fixed fee agreed before any work starts.
Rates and method reviewed by Udit Gupta
Ex Big 4 — Ernst & Young, Deloitte · International & cross-border tax specialist · CPA Canada (In-Depth Tax Program) · Chartered accountant, ICAI & MIA
Udit Gupta has over 15 years of experience helping corporations and business owners with corporate structuring, corporate tax filing, bookkeeping, payroll, GST/HST, cross-border tax and CRA representation. He is Big 4 trained, at Ernst & Young and Deloitte, and qualified as a chartered accountant in India and again in Malaysia. In 2014 he founded his accounting practice to serve entrepreneurs, startups and non-resident business owners across Canada. View full member bio.
The Institute of Chartered Accountants of India — member 521458 · Malaysian Institute of Accountants — member CA 44667 · Ex Big 4: Ernst & Young, Deloitte · CPA Canada (In-Depth Tax Program), completed 19 Dec 2023 · In-Depth GST/HST Part I, 12 Jul 2022 · Part II, 5 Jul 2023
Editorial policy. Every page is researched against primary sources — the Income Tax Act, CRA publications and CPA Canada guidance — and every rate or threshold is stated with the tax year it applies to.
Sources. CRA — Businesses · Income Tax Act (Justice Laws Website)