United Kingdom · system map
Follow the rules, the money and the power around tax.
Your tax position sits inside a public system. These maps connect the rules people face with the institutions that make, administer, fund, enforce and challenge them.
Start with your tax
Checks and practical journeys
Then zoom out
Public system and civic data
Source-linked and non-partisan. Official work contacts and public roles are kept separate from private life; publication status and evidence gaps stay visible.
Public money
How pooled tax becomes allocations, health and education delivery, accounts and audit.
Politics and power
Who makes the rules, how decisions travel and what the evidence can support.
Accountability
Who watches public bodies, who can challenge them and where coverage still stops.
The tax industry
Roles, qualifications, pay evidence, market gates and lawful routes into the work.
Charities
Registers, legal forms, conditional tax treatment, funding, duties and safe help routes.
Build on the commons
The same understanding, shaped for software
Read-only public doors need no account. Each door shows the coverage and version data it currently carries; public datasets also state their rights and publication status. An endpoint existing does not mean every candidate record has passed its publication gate.
Tax expert capabilities
Public capability JSON and links to the bounded assessment contracts.
Politics API guide
Dataset contracts, publication gates, source fields and safe reuse boundaries.
Public-funding API
Stable records, manifests, changes and machine-readable funding paths.
OpenAPI 3.1
The full deployed service contract for people, apps and agents.
See the publishing method for the separate evidence, rights and personal-data gate used by the politics work.