Data Sources
Every record on this site comes from an official government transparency portal. This page lists each source, what it covers, and how current our copy is.
Ohio Checkbook
State of Ohio vendor payments, published at checkbook.ohio.gov.
Our current copy: 24,768,843 payment records dated Jan 3, 2022 through Jun 26, 2025 (state fiscal years 2022, 2023, 2024, 2025; the earliest may be partial, since coverage begins when the portal's bulk data begins), refreshed Jul 29, 2026.
Oklahoma OpenBooks
State of Oklahoma vendor payments, published at data.ok.gov.
Our current copy: 18,736,669 payment records dated Jul 2, 2007 through Jun 30, 2025 (state fiscal years 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025; the earliest may be partial, since coverage begins when the portal's bulk data begins), refreshed Jul 29, 2026.
Checkbook NYC
City of New York vendor payments, published at www.checkbooknyc.com.
Our current copy: 38,060,921 payment records dated Dec 22, 2009 through Jun 30, 2025 (state fiscal years 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025; the earliest may be partial, since coverage begins when the portal's bulk data begins), refreshed Jul 29, 2026.
Coverage grows over time as sources publish more history and as we add jurisdictions. Figures are shown as reported by each portal; see our methodology for what we do and don't do to the data, and the verification reports for how each source's numbers are checked.