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Castle of Understanding × TaxSorted

How TaxSorted builds understanding

A tax answer should never be a loose number or a wall of jargon. We stack the question, exact words, supplied facts, derived values, unknowns, rules, sources and reasoning until the answer can stand — then show where it stops.

The building language

Six pieces, each with one job

Doors, bricks, rooms and open doors come from the public Castle method. TaxSorted adds windows and paths so a high-stakes answer carries evidence, limits and a useful way forward.

  1. Door

    A question begins the path.

    Start with what the person needs to understand or do, not with a product feature.

  2. Brick

    An exact word carries one stated meaning here.

    Define tax terms in plain words for this country, period and task, then keep that stated meaning across the page, calculation and API.

  3. Room

    A bounded answer gives the thought walls.

    Keep each answer inside its stated country, tax period, supplied facts and task.

  4. Window

    A source lets the reader look beyond our words.

    Show the official source, applicable date, legal force and evidence limit.

  5. Open door

    An unanswered question stays visible.

    Keep missing facts, uncovered rules and genuine disagreements explicit instead of guessing.

  6. Path

    Understanding should lead somewhere useful.

    End with a safe next action, correction route or clear reason to stop.

One answer

Stacked honestly from the foundation up

Each layer keeps its own meaning. A source supports a rule; it does not prove that a person's facts are complete. A calculation follows admitted facts and rules; it does not become an HMRC decision.

  1. 01

    Question

    The exact thing that needs answering.

  2. 02

    Supplied facts, derived values and unknowns

    What was supplied, what was derived and what is still missing.

  3. 03

    Rules and sources

    The authority, applicable period, scope and legal force.

  4. 04

    Reasoning

    The visible path from facts and rules to the conclusion.

  5. 05

    Answer and next step

    A bounded conclusion, its limits and the safest useful action.

  6. 06

    Correction

    A public route to challenge, repair and improve the answer.

Start where you are

Choose a door

You do not need to learn the whole system before taking one safe step.

What does the rule actually say?

Read a plain-words guide with the figures, official sources and scope kept together.

Read the open book

Why did TaxSorted reach this answer?

Inspect the supplied facts, derived values, unknowns, rules, sources, reasoning and escalation boundary.

See the tax-expert foundation

Who makes, runs and challenges the system?

Follow the rule into institutions, public money, accountability and official challenge routes.

Explore the UK system

How can software inspect the same foundations?

Begin at the read-only machine doorway for current datasets, evidence lanes, safety walls and typed next actions.

Open the machine doorway

The public bridge

What crosses it — and what does not

This map is inspired by the public Castle of Understanding: words are bricks, bounded thoughts become rooms, and questions open doors. Its public gate source at bee8c2b shows how that curated surface was made when we reviewed it on .

TaxSorted imports no Castle rooms and makes no live request to the Castle. Every tax claim must still stand on TaxSorted's own named authority, date, scope and review. The Castle is a way to organise understanding, not tax evidence or tax advice.

This integration adds no tax-data storage, telemetry or live Castle request. TaxSorted's shared shell may remember only your chosen language on this device. The page and its machine-readable twin ask for no account. The TaxSorted-authored map is CC-BY-SA-4.0; attribute TaxSorted (taxsorted.io). That licence does not relicense linked Castle material. Found a crack? Show us what needs repairing.