Prior to 2005, budgetary procedures in Türkiye were, for the large part, governed by General Accounting Law No. 1050. Then, in order not only to promote greater accountability and fiscal transparency but also to mandate the more efficient and effective use of public funds, the Turkish legislature passed Public Financial Management and Control Law No. 5018 in 2003. This law, upon coming into effect in 2005, greatly revamped extant budget procedures. One of the more important outcomes of Law No. 5018 was the creation of an index that could be used to measure the degree to which Türkiye’s budgetary procedures have improved whilst also allowing analysts an opportunity to compare fiscal discipline before and after 2005. This study calculates budgetary procedure indices for two specific terms, 1998–2005 and 2005–2021. In this article, I employ the methodology developed by Dabla-Norris et al. (2010) to calculate two separate indices, one of which pertains to the different stages of the budget process (i.e., planning, approval, implementation) and the other to its categories (i.e., top-down procedures, rules and control mechanisms, sustainability and credibility, comprehensiveness, transparency). Since, however, minor adjustments too small to be considered true reforms were made to budgetary practices and procedural rules both prior to and after 2005, I have calculated separate index values for the periods during which these changes were in effect. The relevant indices reveal that Law No. 5018 has had a very significant impact on budgetary procedures. As such, while Law No. 5018 precipitated noticeable improvements to budgetary procedures, it was observed that these developments in the budget procedures did not affect the fiscal discipline.