Introduction
When planning a buy-to-let investment, one of the most common questions landlords ask is what credit score for a buy to let mortgage is actually required. With so much conflicting information online, it’s easy to assume there’s a single number lenders look for, but the reality is more nuanced.
In the UK, buy-to-let lending places far more emphasis on overall credit behaviour and affordability than on a headline score alone. Whether you have a low score, past credit issues, or even no credit history, there may still be routes available with the right approach. Understanding how lenders assess risk can help you plan more confidently and avoid unnecessary rejections.
This guide explains how credit scores and credit history are viewed for buy-to-let mortgages, what options exist for landlords with imperfect credit, and how Mortgages RM supports borrowers in securing suitable, competitive deals.
Is There a Minimum Credit Score for a Buy-to-Let Mortgage?
There is no universal minimum credit score for a buy to let mortgage in the UK. Each lender uses its own internal assessment, meaning the score you see on a credit report is only one small part of the decision.
What matters more is whether your credit history shows responsible financial behaviour over time. Lenders are usually more concerned with patterns, recent activity, and the severity of any issues rather than a single numerical score.

Credit Score vs Credit History: What Lenders Really Look At
A credit score is simply a snapshot generated by a credit reference agency. Your credit history, however, tells the whole story. It shows how you’ve managed borrowing over the past six years, including any missed payments, defaults, or resolved issues.
For buy-to-let mortgages, lenders tend to focus on how recent any credit problems were, whether they were minor or more serious, and whether there is clear evidence of improved financial behaviour since. This is why borrowers with similar credit scores can receive very different outcomes.
Some applicants also worry that having little or no credit history is just as damaging as having bad credit. While a limited history can make assessment more cautious, it doesn’t necessarily prevent approval, particularly where affordability, rental income, and overall financial stability are strong.
Buy-to-Let Mortgages for Low Credit Scores
Having a low score does not automatically rule out borrowing. Buy to let mortgages for low credit scores are available where the wider application makes sense. Rental income strength, deposit size, and overall affordability often carry more weight than the score itself.
In many cases, landlords with lower scores still secure funding by choosing lenders whose criteria better reflect real-world circumstances rather than rigid scoring thresholds.
Buy-to-Let Mortgages With Bad Credit History
A bad credit score buy to let mortgage may still be possible if issues are historic or have been resolved. Lenders tend to view older or isolated problems far more favourably than recent or repeated ones.
Common credit issues considered include missed payments, defaults, CCJs, and previously discharged insolvency. What matters most is demonstrating financial stability since those events and showing that the mortgage is sustainable long-term.
How Deposit Size Impacts Credit Decisions
Deposit size plays a crucial role in mitigating risk. A larger deposit can significantly improve options for applicants with adverse credit by reducing loan-to-value and lender exposure.
Even a modest increase in deposit can unlock better rates or broader lender choice, making the overall deal more sustainable, particularly when credit history is less than perfect.
How Affordability Works Alongside Credit Issues
Buy-to-let affordability is primarily based on rental income rather than personal earnings. Lenders assess whether rent comfortably covers mortgage payments under stress-tested conditions.
For applicants with bad credit, higher interest rates can affect affordability calculations. In some cases, product structure or fees may be adjusted to ensure the rental income still meets lender requirements, which may slightly extend the timeframe for a buy-to-let mortgage while the lender completes its assessment.

Improving Your Chances Before You Apply
Small steps can make a meaningful difference when applying with imperfect credit. Reviewing your credit report for accuracy, understanding how lenders interpret past issues, and presenting a clear rental strategy all help strengthen an application.
Professional advice ensures your application is presented to lenders whose criteria best match your circumstances, reducing the risk of unnecessary declines.
Conclusion
There is no single answer to what credit score for a buy to let mortgage you need. UK lenders assess applications based on credit history, affordability, rental income, overall financial stability, and, in some cases, the age limit for buy to let lending rather than relying on a fixed number alone.
Even with low scores, bad credit history, or limited credit records, buy-to-let options may still be available with the proper structure and advice. Mortgages RM helps landlords secure solutions that support both immediate goals and long-term financial confidence. Book your mortgage consultation with Mortgages RM today and explore buy-to-let options with confidence and clarity.



