This dataset contains data on all registered income and expenditure of the province of Overijssel from 1604 until 1795. It consists of three main files. The first one contains descriptions of all registered items ('posten') regarding income and expenditure; the second file comprises data on the amounts of money; the third file contains (summaries of) complete descriptions of some items. The dataset is created for the project 'Provincial finances in the Dutch Republic'. It is used for the publication of Rijks Geschiedkundige Publicatiën, Volume I: Overijssel, Kleine Serie 86 (The Hague 1996), published by the Institute of Netherlands History (ING).