This calculator provides indicative figures only and is for information purposes. It does not constitute mortgage advice or a guarantee of borrowing. Buy-to-let affordability is assessed by each lender using their own criteria, which may include (but is not limited to) stressed interest rates, ICR, maximum LTV, fees, property type, portfolio status, and borrower tax position. If you are unsure what stressed rate or ICR applies to your circumstances, please seek professional advice. For tax treatment, speak to a qualified accountant. For expert mortgage advice contact Mortgage One.