Republic of Korea is being the top country by structural balance in the world. As of 2016, structural balance in Republic of Korea was 18,707 national currency (billions) that accounts for -2.79 % of the world's structural balance. The top 5 countries (others are Singapore, Luxembourg, Estonia, and Lithuania) account for -2.79 % of it. The world's total structural balance was estimated at -671,240 national currency (billions) in 2016.
The structural budget balance refers to the general government cyclically adjusted balance adjusted for nonstructural elements beyond the economic cycle. These include temporary financial sector and asset price movements as well as one-off, or temporary, revenue or expenditure items. The cyclically adjusted balance is the fiscal balance adjusted for the effects of the economic cycle; see, for example, A. Fedelino. A. Ivanova and M. Horton "Computing Cyclically Adjusted Balances and Automatic Stabilizers" IMF Technical Guidance Note No. 5, http://www.imf.org/external/pubs/ft/tnm/2009/tnm0905.pdf.