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