The Magic of Branchless in FinTech: How to Tame the NASD 30/360 Financial Standard and Solve the IRR Equation Without a Single IF

Calendar and interest calculations are a hidden "landmine" of the global financial system. Regulators and financiers have been unable to devise a simple date-calculation formula for several centuries. The US 30/360 NASD standard has been criticized multiple times and rewritten by various countries, while the built-in functions of Excel are completely frozen with February bugs, breaking the continuity and monotonicity of time at month boundaries.

The production-grade programmatic core, source files, and clean VBA modules for this framework are officially published and open-sourced on my GitHub repository: [GitHub: branchless-continuous-time-irr].

This article performs a complete mathematical and hardware deconstruction of this chaos. I will guide the reader through a rigorously verified chain of branchless discoveries: from computing the commercial NASD 30/360 standard to the complex mathematical framework that forms the basis of my peer-reviewed scientific paper published by Lomonosov Moscow State University, available for verification via direct link: ) and on the eLIBRARY platform (direct link: .