If you intend to hold to maturity then you should accrue the bond coupons over time, that’s the modal case
If part of your bond portfolio is available for sale, then you should use mark-to-market accounting, which prices in the present value of future coupons and the discount rate as well.
IIRC this was one of the issues with the failure of SVB, they were forced to sell their bonds
and realize a huge MtM loss
If you intend to hold to maturity then you should accrue the bond coupons over time, that’s the modal case
If part of your bond portfolio is available for sale, then you should use mark-to-market accounting, which prices in the present value of future coupons and the discount rate as well.
IIRC this was one of the issues with the failure of SVB, they were forced to sell their bonds and realize a huge MtM loss