What is one of the rules concerning capitalizing interest?

Capitalizing interest refers to the process of adding interest costs to the carrying amount of an asset instead of recognizing them as an expense in the income statement. This practice is allowed under certain conditions, specifically for qualifying assets that require a significant period of time to get ready for their intended use, such as construction projects.

The correct choice emphasizes that capitalization is limited to the interest on costs specifically incurred during the construction or development of a qualifying asset. This means that only the actual interest expenses incurred on borrowings used to finance these specific costs can be capitalized, rather than all interest from total borrowings or projected future borrowing amounts. This approach aligns with the matching principle in accounting, ensuring that the costs associated with generating future benefits are accurately reflected in the financial statements.

The rationale behind the other options involves principles that are not applicable in standard accounting practices. For instance, capitalizing all borrowed amounts or projecting future borrowings does not align with the principle that only interest directly relating to the construction or development period should be capitalized. Therefore, the focus is always on the interest incurred on specific borrowings associated with qualifying asset expenditures rather than a blanket approach to all interest charges.