Interest On Loans To Your Business
If you have made a loan to your business you should consider paying interest on the loan, as this will be an allowable deduction against the business profits. However, the interest will be taxable on the lender, so you need to consider the tax rate applicable to both parties.
For example, if the company pays tax at 20% and the director/shareholder pays tax at 40% this would clearly not make sense! If the loan is made to a company, the company will normally also need to deduct 20% tax at source and pay this to HMRC quarterly.