How we verify
Every figure carries a citation to the primary source it came from — a CRA page, a Revenu Québec table, ontario.ca — and the date we last read it. Not a general disclaimer: a specific link and a specific date, per number, the same standard you’d want on your own working papers.
Before anything ships, a second person re-derives the number by hand from the same sources and checks it against the calculator’s output, independent of whoever built the page. This month that pass caught a Quebec QPIP split error on the self-employed page before it shipped.
Every calculator ships with a plain Node test file in the open repository, asserting its output against figures worked out by hand from the cited sources — no framework, no fixtures. Run it yourself instead of taking our word for it. How we verify, in your vocabulary →
- Formula last verified8 September 2026
- SourcesEvery Canadian jurisdiction, dated
- Tests36 suites, run from one command
- FoundersMeet the team
- Client referencesnone published yet — we would rather show none than invent one
The tools your clients ask about
Salary vs Dividends
ON · BC · AB · QC live — other provinces in progress.
Compares taking corporate income as salary or as eligible dividends after personal tax, CPP and the dividend tax credit, for the province you pick.
Self-Employed Tax
What a sole proprietor keeps after both halves of CPP (the employer half as a deduction, the employee half as a credit), optional EI or mandatory QPIP in Quebec, and federal and provincial tax on the correct base — with an employee earning the same gross shown beside it so the difference is explained to the cent.
Take-Home Pay
Your net pay in every province and territory after federal and provincial income tax, CPP (including the second ceiling), EI — and QPP, QPIP and the abatement in Quebec — on the annual method CRA publishes in T4127. Shows the effect of an RRSP contribution and your average and marginal rates.
GST/HST
Add or remove sales tax for every province and territory, split into GST, PST/QST or HST, with the 2026 rates and their sources.
RRSP Refund
The refund an RRSP contribution produces in your province — tax with and without the deduction, using the same engine as the take-home calculator.
Tax Refund
Enter your T4 income, the tax your employer deducted and any RRSP contribution, and see whether you are owed a refund or have a balance to pay for the 2026 return, with the reasons the two numbers differ. Uses the same federal and provincial engine as every other page here.
Capital Gains
Tax on a sale at the 50% inclusion rate, computed as the extra tax the taxable gain adds to your income in your province.
Rates
$300 a year is less than one billable hour.
The 20% yearly re-verification is the same maintenance ratio Dinkytown/KJE has charged institutions for decades.
Questions
How do I know this is right?
Each figure carries a dated citation to the government page it came from, a second person re-derives it by hand before release, and a plain Node test file ships with the calculator so you can check it yourself instead of taking our word for it.
Is this another widget I have to maintain?
No. It's an embed or a link, not code you own or patch. When CRA reissues the payroll formulas each January, the tool updates on our side and every firm using it gets the corrected figure at the same time.
Will it look like an ad on our site?
A white-label embed takes your firm's colours and name, not ours. There are no ads, no upsells and no third-party branding inside it — just the calculator.
What happens to a client's numbers when they are typed in?
Nothing. There's no analytics, no storage and no server call — the calculation runs in the browser and the figures never leave the page. See our privacy page for the full policy.
If a number is wrong and I relied on it, who is responsible?
Our calculators are provided as tools, not advice, and without warranty — the professional using one remains responsible for verifying a figure before relying on it for a client. We don't claim any CPA endorsement; we claim a sourced, dated, tested number you can check yourself.