A22v2Delivery risk: AmberGate: pending
Property and land tax reform
A new scope of action A22 (A22v2); A22 itself is unchanged and nothing is inherited from it.
Provisional single-reviewer assessment; not an approved business case.
- Who and where
- Population not yet defined. Jurisdiction: not defined.
- Result so far
- Range if completed: 13.0–19.0 out of 30 (equal weights; not yet assessed: expected incremental benefit (Bn), incremental affordability (Co))
- Funded now (baseline)
- Funded baseline not yet stated
- The change assessed (marginal)
- Marginal change not yet defined
- Domain home: Tax options
- In the national plan: Equality and opportunity list
What the evidence supports—and the next decision
Revaluation, recurrent property taxation and land taxation have different incidence. A common label does not define a reform.
AI-assisted analytical follow-up · 8 October 2026. Proposed appraisal design; the attributed scores below are unchanged. No funding or delivery agreement is implied.
- Define the change
- Specify the tax base, jurisdiction, valuation date, rates and transition; compare revenue-neutral and revenue-raising designs separately.
- Test whether it works
- Bills by income, wealth, tenure and place; revenues, valuation accuracy, housing transactions and behavioural response.
- Establish the cost
- Valuation, administration, appeals and transition relief, with net receipts under alternative behaviour assumptions.
- Protect against harm
- Test cash-poor owners, renters and local-authority distribution; deferment must have transparent interest and recovery rules.
Read with the outcome evidence and sources in the full assessment. Monitoring proposals are not existing baseline measurements. A numerical benefit or cost score needs evidence for the defined increment, not just the scale of the problem.
Full assessment of Property and land tax reform: ten criteria, scenarios, delivery, costs and monitoring
The ten criteria (0–3)
Each criterion is scored 0 to 3 by the reviewer. “Not yet assessed” means unknown: it is never counted as zero.
Scale and severity (Sc)2 of 3 — Serious harm to a defined group or widespread moderate harm
Reviewer’s reason: Provisional problem-importance judgement from linked site pages; not the scale of achievable benefit.
Increment beyond baseline (Ad)3 of 3 — Substantial clearly distinct increment; not novelty alone
Reviewer’s reason: Separate council-tax revaluation, land/property tax and transaction-tax changes; model losers and deferral options. A missing rating requires a defined marginal change.
Confidence in the proposed action (Ev)1 of 3 — Indirect, mixed, modelled or weak causal support
Reviewer’s reason: Modelled designs exist; exact tax base, jurisdiction and transition are not specified.
Expected incremental benefit (Bn)Not yet assessed
Reviewer’s reason: Unknown unless a reasonably defined target-population benefit can be judged; no bonus merely for spanning domains.
Residual harms (Hm)1 of 3 — Material harm/unresolved mitigation
Reviewer’s reason: Concentrated losers and valuation disputes; revenue-neutral change funds no extra spending.
Incremental affordability (Co)Not yet assessed
Reviewer’s reason: Valuation, administration, transition relief, net receipts and behavioural response by jurisdiction.
Delivery capacity (Ca)2 of 3 — Stretched but plausibly obtainable
Reviewer’s reason: Separate council-tax revaluation, land/property tax and transaction-tax changes; model losers and deferral options.
Distribution (Fa)2 of 3 — Mixed or broadly neutral with safeguards
Reviewer’s reason: Provisional distribution judgement for the stated target; verify who pays, who gains and excluded groups.
Meaningful first outcome (Ti)1 of 3 — More than three but less than ten years
Reviewer’s reason: First meaningful outcome, not announcement: Household liabilities, liquidity hardship, mobility and revenue.
Readiness (Rd)1 of 3 — Legislation/external agreement or major enabling work
Reviewer’s reason: Treasury, valuation bodies and relevant governments; Distributional and transition appraisal
Four weightings
Normalised as 10 × weighted sum ÷ sum of weights, on a 0–30 scale. Where a criterion is not yet assessed, the range is the lowest and highest result if it were later scored 0 or 3 — not a score, a confidence interval or a rank.
- Equal weights: Range if completed: 13.0–19.0 out of 30. Not yet assessed: expected incremental benefit (Bn), incremental affordability (Co). Funding gate: not passed.
- Evidence doubled: Range if completed: 12.7–18.2 out of 30. Not yet assessed: expected incremental benefit (Bn), incremental affordability (Co). Funding gate: not passed.
- Scale doubled: Range if completed: 13.6–19.1 out of 30. Not yet assessed: expected incremental benefit (Bn), incremental affordability (Co). Funding gate: not passed.
- Cost ignored (the funding gate still applies): Range if completed: 14.4–17.8 out of 30. Not yet assessed: expected incremental benefit (Bn), incremental affordability (Co). Funding gate: not passed.
Funding gate: Not passed — the cost is not yet assessed or no allocation is committed for this scope. Ignoring cost in a weighting never removes the gate.
Delivery risk and gate
Delivery risk shown: AmberReview’s claim: Amber. Best the recorded evidence allows: Amber.
Review’s reason: Valuation, administration, transition relief, net receipts and behavioural response by jurisdiction.
Why it is not Green yet
- Scope (population, place and increment) not verified against the delivery baseline.
- No verified owner with the powers in place.
- Delivery capacity not verified.
- Lifetime incremental costs not complete.
- No credible funding (a committed allocation for the scope).
- Safeguards not specified.
- Monitoring lacks a metric, a data source or a baseline.
Green needs verified scope, a verified owner with the powers, verified capacity, complete lifetime costs with credible funding, specified safeguards and monitoring with a metric, source and baseline. Amber means appraisal gaps remain; Red means a material delivery obstacle. Red does not mean unimportant.
Gate: Pending — appraisal incomplete (review label: “Pending: incomplete appraisal”).
Why: Scores incomplete; Funding gate not passed (cost unknown or no credible funding).
The gate is separate from national list membership: being listed does not make an option eligible, and an eligible option need not be listed.
Cost and funding
Lifetime costing: Not established. Review: “Full incremental costing not established in reviewed material”.
Still to cost: Valuation, administration, transition relief, net receipts and behavioural response by jurisdiction.
Funding status: not established in review.
Owner, powers and capacity
Proposed owner: Treasury, valuation bodies and relevant governments (proposed, unverified).
Powers: needs legislation or external agreement. Capacity: unverified.
Powers and capacity read from the review’s Rd and Ca anchors; no proposed owner has agreed to act (the review: “Proposed owners have not agreed to act”).
- England:
- not assessed
- Scotland:
- not assessed
- Wales:
- not assessed
- Northern Ireland:
- not assessed
Not defined in the review.
Dependencies, safeguards and risks
Depends on: None recorded.
Safeguards
None specified yet.
Risks and residual harms: Concentrated losers and valuation disputes; revenue-neutral change funds no extra spending.
Monitoring and measured results
Metric: Household liabilities, liquidity hardship, mobility and revenue.
Data source: Not yet named. Baseline: Not yet established.
Measures already on the domain page
- Council tax: top-band bill as a multiple of the bottom band: latest 3× (valuation base April 1991 (still in use)); baseline not published (England).
A page measure is not necessarily the review’s metric; linking the two is an editorial decision still to be made.
Evidence for the outcome
Outcome: Household liabilities, liquidity hardship, mobility and revenue.
Modelled designs exist; exact tax base, jurisdiction and transition are not specified.
SWOT points it addresses
- Council tax bands in England still rest on April 1991 values, and the top band pays three times the bottom band although those homes were worth at least eight times as much in 1991. (Tax options)
- Property-tax reform creates concentrated losers: in the IFS modelling about 17% of London’s poorest fifth would pay over £200 a year more, which makes transition relief and deferral necessary and costly. (Tax options)
- Comparing a broad-tax package, a compliance package and a revenue-neutral property-tax reform on one baseline would show real choices — and that the property reform redistributes rather than raises money. (Tax options)
- Detailed household-level modelling of property-tax reform is published: the IFS modelled council-tax revaluation and reform for every income group and council. (Tax options)
Review record
Assessment status: Provisional single-reviewer assessment; not an approved business case.
Reviewer: Original assessment author (name not supplied). Reviewed: 6 October 2026.
Scored in the working review of 6 October 2026 on the shared ten-criterion scale (one reviewer); not independently calibrated.
First 90 days (review): Produce a signed scope and current-delivery baseline; Separate council-tax revaluation, land/property tax and transaction-tax changes; model losers and deferral options. Obtain incremental costs and an accountable decision before expansion.
Decision route: Distributional and transition appraisal
An editorial screening framework by one reviewer, not a formal appraisal or business case. Proposed owners have not agreed to act.