Does adjusted cost basis include accrued interest paid?

Adjusted cost basis typically does not include accrued interest paid. The cost basis generally reflects the purchase price of an asset plus any associated costs related to acquiring it, like commissions or fees. Accrued interest, on the other hand, is considered a separate expense related to the debt and is not part of the asset's cost basis. Therefore, when calculating adjusted cost basis for tax purposes, accrued interest is usually excluded.