Publisher identity
One publisher behind five national tax sites.
TaxTools Network is the publisher of 5 independent tax calculator sites, one for each of Australia, Canada, New Zealand, the United Kingdom and the United States. The sites share a single set of published standards for where their numbers come from, how those numbers are versioned, and what happens when one of them is wrong.
This site carries no calculators, no articles and no advertising. It exists so that a reader, a search engine or an answer engine that meets one of the five sites can find out who stands behind it.
5
countries covered
1,300+
calculators & tools
ATO · IRS · CRA · HMRC · IRD
every figure from an official source
Counted from the five repositories on 2026-08-16 and rounded down, so the figures stay true between refreshes. Method and exact numbers on the accuracy page.
The five member sites
Each site is built for one country's tax system on that country's own tax calendar, and implements the rules published by that country's tax authority.
-
Australia
AusTax Tools
austax.tools
Income tax · Take-home pay · Superannuation · Capital gains
- 350+
- calculators & tools
Sources: Australian Taxation Office, plus each state and territory revenue office
Tax year: 1 July – 30 June
-
Canada
CA Tax Tools
catax.tools
Income tax · CPP & EI · RRSP · TFSA
- 200+
- calculators & tools
Sources: Canada Revenue Agency, Revenu Québec and the provincial finance ministries
Tax year: Calendar year
-
New Zealand
NZ Tax Tools
nztax.tools
PAYE · KiwiSaver · Student loan · ACC levy
- 100+
- calculators & tools
Sources: Inland Revenue (Te Tari Taake) and ACC
Tax year: 1 April – 31 March
-
United Kingdom
UK Tax Tools
uktax.tools
Income tax · National Insurance · Take-home pay · Stamp duty
- 150+
- calculators & tools
Sources: HMRC and GOV.UK, plus the Scottish and Welsh rate resolutions
Tax year: 6 April – 5 April
-
United States
US Tax Tools
ustax.tools
Federal income tax · State tax · Paycheck · Retirement accounts
- 400+
- calculators & tools
Sources: Internal Revenue Service, Social Security Administration and state revenue departments
Tax year: Calendar year
The TaxTools Network Standard
Five commitments that apply to every calculator on every site. They are written down here so they can be checked against what the sites actually do.
- 01
Official sources
Every rate, threshold and cap traces to the tax authority that set it.
- 02
Transparent calculation
Each tool shows the working, not just the answer.
- 03
Year-versioned rules
Tax years are separate data; past years are never silently overwritten.
- 04
Checked against official examples
Results are verified against the tax authority's own worked examples before release.
- 05
Independence
No advertiser, sponsor or affiliate influences a result.
What each site declares
Every member site carries the same declaration in its footer, with its own name substituted, linking back to this site:
[Site name] is part of the TaxTools Network
That is the whole of the relationship. The sites are not rebranded, they do not share content, and the footer links between them are navigation for readers, not a ranking tactic — the declaration exists so that the publisher behind them is identifiable, not to move traffic between them.