Minimum Deposit Requirements
Most buy-to-let lenders require a minimum deposit of 25% of the property's purchase price. This means for a £200,000 property, you would need at least £50,000. Some lenders will accept 20% in certain circumstances, but the choice of deals at this level is very limited and rates will be higher.
The higher deposit requirement reflects the greater risk lenders associate with investment properties. Buy-to-let mortgages are more likely to default during economic downturns, and investment properties can be harder to sell quickly than owner-occupied homes.
How Deposit Size Affects Your Rate
As with residential mortgages, the more you put down, the better the interest rate you can access. BTL mortgage rates are tiered by loan-to-value ratio, with the best rates typically available at 60% LTV or below.
For example, at 75% LTV (25% deposit), you might pay around 4.5% to 5.5%. At 60% LTV (40% deposit), rates could drop to 3.5% to 4.5%. The rate difference on a £150,000 mortgage can amount to hundreds of pounds per month, making a larger deposit a powerful way to improve your rental yield.
Sources of Deposit Funding
Common sources for a BTL deposit include personal savings, equity released from your residential home through remortgaging, inheritance or gift, and profits from selling other investments. Some landlords use equity from existing buy-to-let properties by remortgaging to release cash for further purchases.
Most lenders will accept gifted deposits, though they may require a letter confirming the gift has no repayment conditions. Using a personal loan or credit card for a BTL deposit is generally not permitted — lenders want to see that the deposit comes from genuine savings or equity.
Stamp Duty Considerations
Remember that your upfront costs extend beyond the deposit. Buy-to-let purchases attract the additional 3% stamp duty surcharge on top of standard rates. On a £200,000 property, total stamp duty would be £7,500, adding significantly to the cash you need at completion.
Factor in stamp duty, legal fees, survey costs, and any immediate refurbishment needs when calculating how much cash you need for your investment. Many first-time landlords underestimate these additional costs and find themselves stretched before the first rental payment arrives.
Important: Your home may be repossessed if you do not keep up repayments on your mortgage. There will be a fee for mortgage advice. The actual rate available will depend on your circumstances. Think carefully before securing other debts against your home.