--- title: "21310 – Tax Laws" url: https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/21310-tax-laws/ date: 2026-01-16 modified: 2026-10-01 lang: en author: "" description: "APN Codex Node 21310 21300 Series — Legislation & Policy Analysis Tax Laws CadenceAnnual TerminalFY2024-25 N14 Current Z−0.0934σ Position46.3, indicative 1Node Definition Tax Laws (21310) tracks the property-transaction tax burden..." word_count: 755 --- # 21310 – Tax Laws APN Codex Node 21310 21300 Series — Legislation & Policy Analysis ### Tax Laws CadenceAnnual TerminalFY2024-25 N14 Current Z−0.0934σ Position46.3, indicative 1Node Definition Tax Laws (21310) tracks the property-transaction tax burden borne by the Australian residential asset base — the ratio of duty collected on property transfers to the value of the residential dwelling stock those transfers move through. It is a trend index of transaction friction imposed by the tax system, not a forecasting instrument for any individual transaction's duty liability. **Known scope limitation:** the numerator (ABS conveyance duty) covers all property transfers — residential and commercial combined, since no residential-only split is published in the source data — while the denominator is the residential dwelling stock alone. Movements in the index can therefore partly reflect changes in commercial-property transaction activity rather than the residential tax burden alone. The node is usable as a trend index; it is not decomposable into a pure residential figure. 2Metric Definition **Primary metric: Conveyance Duty–to–Dwelling Stock Ratio Z-Score** Z-Score Construction Current (FY2024-25)−0.0934σ XtConveyance duty collected as a share of residential dwelling stock value, financial year t μ, σMean and sample standard deviation across the certified 14-year baseline (0.305841, 0.030742) **Metric typology:** annual trend index, ABS conveyance duty data (Taxation Revenue, cat. 5506.0) over the residential dwelling stock value series. **Measurement character.** ABS publishes conveyance duty on a rolling ten-year window, so its current release begins at the 2015-16 financial year. The 14-observation baseline joins two releases, which agree exactly over the five years they share, and runs on observed data throughout, with no extrapolated or proxied years. 3Data Sources Tier-1 sovereign source; no commercial data dependency exists in the node. Source Australian Bureau of Statistics, Taxation Revenue (cat. 5506.0) — conveyance duty on property transfers, annual, all jurisdictions combined; ABS Total Value of Dwellings series as the denominator. 4Analytical Interpretation At −0.0934σ, the FY2024-25 reading sits close to its 14-year baseline mean — the conveyance-duty burden relative to dwelling stock value is running near its historical norm, neither an unusually light nor unusually heavy transaction-tax year. Given the mixed residential/commercial scope of the numerator, this reading should be read as a broad property-transaction tax trend rather than a residential-specific burden figure. Node 21310 · PositionCertified Z-Score, FY2024-25−3σ0σ+3σThe marker shows the node's certified Z-score, −0.0934σ for FY2024-25, on a scale from −3σ to +3σ. The dashed centre line marks 0σ, the baseline average. The marker is a position on the Z-score scale. As a percentile, FY2024-25 sits at **46.3**: indicative position, empirical ranking begins at 20 observations (currently 14). 5Other Components The other seven components of Legislation & Policy Analysis (21300). [Node 21320Planning Regulations & Zoning PolicyReads the share of new dwelling approvals that are not detached houses, as a measure of how far the planning system permits medium- and higher-density supply.](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/21320-planning-regulations-zoning-policy/) [Node 21330Housing Policy (Affordable, Social)Reads social housing as a share of all residential dwellings, once a year at 30 June.](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/21330-housing-policy-affordable-social/) [Node 21340Foreign Investment PolicyRecords the rules that apply when a foreign person buys residential property, from Commonwealth fees and access rules to state and territory duty and land-tax surcharges.](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/series-21340/) [Node 21350Banking & Lending RegulationRecords APRA's rules for assessing and writing new home loans, and how much they reduce the largest loan a borrower can be approved for.](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/series-21350/) [Node 21360Sustainability & Environmental PoliciesCovers the energy and environmental requirements that apply to new homes. No standardised reading is published while a register of these settings is designed.](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/21360-sustainability-environmental-policies/) [Node 21370Tenancy & Consumer Protection LawCovers the rules governing residential tenancies. No standardised reading is published while a register of these settings across all eight jurisdictions is designed.](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/21370-tenancy-consumer-protection-law/) [Node 21380Housing Policy OutcomesGroups quarterly measures of what housing policy produces, as distinct from the policy settings read elsewhere in this series.](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/series-21380/) [Parent branch21300 — Legislation & Policy Analysis](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/) Series Distillation (EL1–EL6) The series explained in six tiers, from plain English to expert. [EL1 · Plain EnglishWhy Is Property So Hard Right Now?](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/el1-why-is-property-so-hard-right-now/) [EL2 · FoundationalHow Government Rules Shape the Property Market](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/el2-how-government-rules-shape-the-property-market/) [EL3 · PractitionerWhat the Laws Are Doing to the Australian Property Market](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/el3-what-the-laws-are-doing-to-the-market/) [EL4 · Advanced PractitionerThree Ways the Series Measures Policy](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/el4-the-regulatory-split/) [EL5 · ExpertThe 21300 Series in Detail: Constructs, Baselines and Positions](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/el5-structural-regulatory-configuration-q4-2025/) [EL6 · MasterfulMeasuring Policy: What a Legislative Series Can and Cannot Show](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21300/el6-structural-architecture-of-residential-policy-failure/) 6Certification Statement Tax Laws (21310) holds Active status. The current reading is certified against Tier-1 ABS sources with zero extrapolated or proxied observations across its 14-year baseline. The mixed-scope numerator limitation described in Section 1 is a permanent, disclosed feature of the certified construction, not a defect awaiting correction.