Buy to Let Mortgage Calculator

Property and mortgage

Purchase price (£) Deposit percent (%) ⓘStandard BTL deposit is 25% to 35% This equals £0 upfront Mortgage type Interest Only Repayment

Rent and costs

Monthly rent (£) £0/year after voids Empty weeks per year (voids) ⓘTypical: 1 to 2 weeks per year Letting agent fee ⓘTypical range 8% to 12% % £/mo Maintenance allowance ⓘBudget for repairs: 5% to 10% % £/mo Landlord insurance (£ per month) Service charge (£ per month) Ground rent (£ per month) Other monthly costs (£) ⓘUtilities, subscriptions, etc.

Tip: Many landlords plan for 1 to 2 empty weeks per year in strong rental areas and 5% to 10% for maintenance.

Tax and ownership

Individual: 20% tax credit on mortgage interest (Section 24). Company: Full interest deductibility. Applies to UK residential buy-to-let properties subject to Section 24 mortgage interest rules.

Upfront cash

Stress test

Lenders use a higher rate to check if rent covers mortgage payments under adverse conditions.

Stress rate (%) ⓘCommon range: 5.5% to 8%