You will have a benefit in kind, based on the difference between interest calculated at the HMRC official rate and the amount actually paid to the company during the same year.
Therefore because you will not physically pay the interest until a later tax year, the accrued interest cannot be taken into account when calculating the benefit in kind.
The benefit in kind should therefore be reported on form P11D for each tax year until the year in which the loan is repaid and the accrued interest is settled.
Once the interest has been paid, a retrospective claim for relief can be made for up to six years after the tax year the benefit occurred in.
If you would like more advice on expenses and benefits or wish to discuss something else tax or accountancy related, please feel free to contact your local TaxAssist Accountant.