Most "how much can I borrow" buy-to-let (BTL) calculators differ significantly from residential ones because they prioritize over personal salary. 🛠️ How BTL Calculators Work

Several platforms offer specialized tools for different landlord needs:

Lenders typically require rent to be 125% to 145% of the monthly mortgage payment.

Calculators often "stress test" your application by assuming a higher interest rate (e.g., 5% to 5.5% ) to ensure you can still pay if rates rise.