Countworthy for Business

Math your clients can check.

Seven calculators you can put on your own site — each sourced, dated, independently re-derived and tested. Nothing a visitor types ever leaves the page.

Ask about a custom calculator Ask about a white-label embed

Live, unbranded. Every one of these takes your name and colours from the embed code. Build the snippet

Choose your industry

For accounting and bookkeeping firms

Numbers your firm can hand to a client without re-deriving them.

Salary vs Dividends · Self-Employed Tax · Take-Home Pay · GST/HST · RRSP Refund · Tax Refund · Capital Gains

For mortgage brokers and agents

A branded closing-cost calculator for your site today, and a straight answer about what it is not yet.

Land Transfer Tax · Mortgage Affordability

For credit unions and small fintechs

Savings calculators for your member site that never send a single number anywhere.

TFSA Contribution Room · RRSP Refund · GIC

For financial planners and advisors

The retirement math you already check by hand, done the same way and dated.

Retirement · OAS Clawback · CPP Start Age · Capital Gains

For payroll and HR teams

The one-off pay calculation your payroll system has no screen for.

Bonus Tax · Vacation Pay · Pro-Rata Salary · Raise · Overtime Pay · Take-Home Pay · Two Jobs Tax

Formulas last verified3–11 October 2026, dated on each calculator
SourcesEvery Canadian jurisdiction, dated
Tests55 suites, run from one command
FoundersMeet the team
Client referencesnone published yet — we would rather show none than invent one
Security reviewWhat runs, what is stored, where

Land transfer tax, last verified: 7 October 2026 — every jurisdiction’s primary source (statute, regulation, by-law or government fee schedule) was read again on that date, Prince Edward Island’s on 6 October 2026, and each bracket schedule, rate, fee formula and first-time-buyer rebate, exemption or credit compared with it; the audit trail lists the source read for each jurisdiction and the date that source carries. See the full audit trail →

What's included

Spec: We write the spec with you. Every figure carries a dated primary source, and you approve the spec before anything is built.
Build: The same pipeline that built the 36 public tools on this site — no shortcuts for a private build.
Re-derivation: A second, independent pass reproduces every number by hand from the sources before release. This week that pass caught ten money defects on our own pages before they shipped.
Tests: A plain-Node test file ships with the calculator. You can run it yourself — no framework, no fixtures.
Accessibility: Labelled inputs, live results announced once, and the whole thing usable end to end from a keyboard.
Privacy: No scripts, no cookies, no analytics in the embed. Ever.
Delivery: An embed snippet (iframe) or a standalone page — your colours, your name, our credit line optional.
Maintenance: Rates re-indexed every January, under a yearly re-verification plan.

Rates

Offer

What it is

Price

Turnaround

Custom calculator, single jurisdiction

Built to your spec, for one province or one rule set

from $1,500 CAD

5 business days

Custom calculator, all provinces and territories

Built to your spec, covering every Canadian jurisdiction

from $4,000 CAD

10 business days

White-label embed of an existing tool

One of our 22 Canadian tools, in your colours and name

$300/yr

1 business day

White-label embed, the whole Canadian suite

All 22 Canadian tools, in your colours and name

$1,500/yr

1 business day

Engine and API licence

The verified Canadian tax engine and data, for your own product

from $2,000/yr

talk to us

Yearly re-verification

Rates re-indexed every January, sources re-checked, tests re-run

20% of the build price per year

January

Prices exclude HST. 50% deposit, balance on delivery. You own the delivered code; the underlying engine stays ours to reuse.

Terms for professional use

Countworthy's calculators and the figures they produce are provided as tools, not as advice, and without warranty of any kind.

The professional using a calculator remains responsible for verifying any figure before relying on it for a client or member.

No calculator is guaranteed to fit a specific situation; nothing here overrides your own judgment or your own numbers.

To the maximum extent permitted by law, Countworthy accepts no liability for any loss arising from the use of a calculator or a figure it produces.

The code delivered for a custom build is the client's; the underlying engine, tax tables and verification pipeline remain Countworthy's to reuse elsewhere.

Under a yearly re-verification plan, sources are re-checked and rates re-indexed each January.

These terms, and any agreement between Countworthy and a client, are governed by the laws of the Province of Ontario.

How it works

The question your clients askWhat number are people asking you for that they can’t get anywhere else on your site?
The spec, with sourcesWe write out every input, every formula and every source, dated. You read it before anything is built.
Your sign-offYou approve the spec, or send it back. Nothing is built on a guess.
Build and independent re-derivationWe build it, then a second person re-derives every number by hand from the sources and checks it against the build.
Delivery, and the January planYou get the embed or the page, plus a standing plan to re-verify it every January when rates change.

Questions

Who owns it?

You own the calculator we deliver — the specific page or embed built to your spec. We keep the right to reuse the underlying engine, including the tax tables and verification pipeline, in other work such as our own public tools.

What happens when a rate changes?

For custom builds, a yearly re-verification plan (20% of the build price) re-reads every source each January and corrects anything that moved — the same freshness system that runs the public site. White-label embeds update automatically wherever they’re embedded, at no extra cost.

Can it match my brand?

Yes — colours, name and whether our credit line shows are all part of the spec. The demo above is our public land transfer tax calculator, re-skinned for a mortgage brokerage: same math, different name.

Does it track my visitors?

No. No scripts, no cookies and no analytics ship inside the embed or the delivered page, and nothing typed into it ever leaves the visitor’s browser — see our privacy page for the whole policy.

I run a credit union or regulated firm. What does your security review look like?

Our security and privacy practices page describes what actually runs, what is stored and where, quoting the real headers, content-security policy and Firestore rules rather than a marketing summary. We do not claim SOC 2 or ISO 27001 certification — a two-person team does not have one, and we would rather say so than imply otherwise.

Talk to us

Ask about a custom calculator Print the rate sheet Security practices See a calculator on a client’s site

Harbourline Mortgage Group is a fictional brokerage, used only to demonstrate a white-label embed — it is not a real business.