Last updated: 12 Oct 2026 All changes
wanasiasa

Open data

All published data is available to download. No account, no tracking.

These files contain verified data only. Private correspondence appears in no file at all.
Data Format Columns Updated Download
budget-line-items CSV 0 15 Oct 2026 Download - metadata
budget-line-items JSON 0 15 Oct 2026 Download - metadata
cost-of-office CSV 0 15 Oct 2026 Download - metadata
cost-of-office JSON 0 15 Oct 2026 Download - metadata
directory CSV 399 15 Oct 2026 Download - metadata
directory JSON 399 15 Oct 2026 Download - metadata
regional-comparison CSV 31 15 Oct 2026 Download - metadata
regional-comparison JSON 31 15 Oct 2026 Download - metadata

What each file contains

directory

Politicians, offices, and terms, with provenance per row.

Columns: politician_slug, full_name, party, office_slug, office_title, office_type, constituency, primary_region, start_date, end_date, currently_serving, source_name, source_url, document_reference, last_verified_at, confidence

cost-of-office

Statutory salary components by office type, effective-dated. Reported-unofficial figures are marked is_statutory=false and are never blended into a statutory total.

Columns: office_type, component_name, amount_tzs, frequency, annualised_tzs, is_statutory, effective_from, effective_to, source_name, source_url, document_reference, last_verified_at, confidence

budget-line-items

Budget line items per ministry and year, cited to the source PDF page.

Columns: ministry, vote_number, budget_year, vote_type, category, subcategory, amount_tzs, source_page_reference, source_name, source_url, document_reference, last_verified_at, confidence

regional-comparison

Cost of governance by region with methodology version. The contribution side is regional GDP, not tax collected. HDI reflects long-run development factors and must not be attributed to a current officeholder.

Columns: region, region_slug, fiscal_year, officeholder_compensation_tzs, officeholder_count, regional_secretariat_budget_tzs, economic_output_tzs, economic_output_year, output_is_proxy_for_tax, output_to_cost_ratio, methodology_version, methodology_note, computed_at

Licence

CC-BY 4.0. Use it as you wish, as long as you credit the source.

How to credit the source

Data from Wanasiasa (wanasiasa.com), licensed CC-BY.

Every file has a metadata file carrying sources, licence, and the date updated - machine readable.

Before you publish these figures

Regional output is the value of production, NOT tax paid. No official source publishes tax by region. Likewise, development figures describe a place over decades, not the performance of whoever is currently in office.