Interests accrued previously to investment in bonds

[fr.perezca]

Hello community, I have a question for which I ask for your help, please.

Let's assume that we invested in a corporate bullet bond on April 20, 20x1 that pays coupons quarterly, and that the last coupon was paid on March 31, 20x1. My question is: What happens in accounting terms with the interest that has accumulated between the date of the last coupon and the acquisition date? If you could respond to me with accounting entries, in addition to giving me the reasons for your response, I would appreciate it, please.

[JakobLavrod]

When you buy the bond, the initial fair value (which typically will be what you buy the bond for) is the principal (see IFRS 9 4.1.3a). If company A sells the bond to company B, it means in simplified terms that accrued interest for company A becomes principal in the accounting for company B.