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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[0.3.1] - 2026-03-20

Added

  • Extended calibration to an 8-sector multi-industry model: Energy, Manufacturing, Construction, Trade & Transport, Information & Finance, Real Estate, Business Services, and Public & Other.
  • Added oguk/industry_params.py with get_industry_params() returning sector-specific capital shares, TFP, and production parameters calibrated from ONS data.
  • Computed sector-level TFP as Solow residuals using ONS capital stocks by industry (CAPSTK) and workforce jobs by SIC (JOBS02), normalised so GVA-weighted mean equals 1.0.
  • Added run_tpi_and_export.py to extract and export per-industry TPI results (Y_m, K_m, L_m, p_m) to tpi_results.xlsx.
  • Added tpi_charts_plotly.py with sector-level transition path charts anchored to ONS historical outturn (GVA, capital stocks, workforce jobs from 2000) and projected forward using OBR nominal GDP growth.

[0.3.0] - 2026-02-24

Changed

  • Calibrated fiscal parameters to OBR November 2025 Economic and Fiscal Outlook: steady-state debt ratio 95% of GDP, fiscal adjustment beginning in period 4 (matching 2029-30 fiscal rules).
  • Recalibrated tax parameters so model revenue/GDP matches OBR forecasts (~40% of GDP). Added wealth tax parameters (council tax, stamp duty, CGT proxy), raised effective indirect tax rate, and aligned capital depreciation allowances with economic depreciation.
  • Set non-pension welfare transfers (alpha_T) to 6% of GDP, separate from state pension which is modelled via OG-Core's pension system.
  • Replaced five legacy CI workflows (conda, Python 3.9, black, 3-OS matrix) with a single uv-based workflow on Python 3.13 using ruff for linting and formatting.
  • Modernised oguk/sources.py data-fetching to return calibrated tax rates consistent with OBR revenue shares.

[0.2.0] - 2023-01-16

Updated

  • Updated all OpenFisca references to PolicyEngine. This represents a big change in the underlying microsimulation dependency structure
  • Updated get_micro_data.py and test_get_micro_data.py with PolicyEngine references instead of OpenFisca.
  • Updated demographics.py to use the UN data portal. Also updated corresponding structures in calibrate.py
  • Added four .csv files to oguk/data/demographic/. This files allow for demographics.py to have the option to not download the data from the UN data portal.
  • Updated environment.yml and setup.py.
  • Updated run_oguk.py with more consistent specification, and updated references from openfisca to policyengine.
  • Small updates to .gitignore, README.md, demographics.rst, get_micro_data.rst, and tax_functions.md.
  • Deleted pyproject.toml which was just a reference to the black package.
  • Updates the CHANGELOG.md and updates the version number in setup.py.
  • Updates the GitHub Actions deploy_docs.yml, docs_check.yml, and build_and_test.yml.

[0.1.2] - 2022-07-29

Fixed

  • UK corporate tax rate schedule added.

[0.1.1] - 2022-07-19

Changed

  • Initial guesses at the steady state interest rate, initial_guess_r_SS, and transfer amount, initial_guess_TR_SS were changed so that the example script, ./examples/run_oguk.py solves with the latest OG-Core.

[0.1.0] - 2022-07-01

Changed

  • Firm parameters updated to be vectors and 2D arrays to be compatible with multiple industry model of ogcore 0.9.0. OG-UK now required ogcore >= 0.9.0.
  • environment.yml file set to install ogcore from PyPI

[0.0.3] - 2022-04-26

Changed

  • Budget window for microsimulation changed to 2022-27 (from 2019-22).

[0.0.2] - 2022-01-23

Added

  • Better handling and logging to the user of the status of microdata.

[0.0.1] - 2022-01-20

Fixed

  • OpenFisca-UK dataset handling.

[0.0.2] - 2022-01-24

Updated

  • Consolidate GitHub Actions.