One of the first things would-be landlords discover is that buy-to-let needs a bigger deposit than buying a home to live in. This guide explains how much deposit you need for buy-to-let: the usual minimum, how a bigger deposit helps, where the money comes from, and the other upfront costs to plan for.
Bigger than a residential deposit
Buy-to-let deposits are significantly larger than residential ones. While you might buy your own home with a 5% or 10% deposit, buy-to-let lenders usually want much more, because letting is seen as higher risk. This larger deposit requirement is one of the main barriers to entry for new landlords, so it is important to know what you will need before planning a buy-to-let purchase.
Usually at least 25%
Most buy-to-let lenders require a minimum deposit of 25% of the property's value, giving a maximum loan-to-value of around 75%. Some specialist lenders accept smaller deposits, up to around 80% or even 85% loan-to-value, but these are less common and come with higher rates. For most landlords, planning for a deposit of at least a quarter of the property's price is a sensible starting point.
A bigger deposit means better rates
As with residential mortgages, a bigger deposit unlocks better buy-to-let rates. The best deals typically come with deposits of 40% or more, meaning a loan-to-value of 60% or below. Putting down more reduces the lender's risk and your interest rate, improving your rental profit. So if you can afford a larger deposit, it can pay for itself through a lower rate and better cash flow over time.
Where the deposit comes from
The deposit for a buy-to-let often comes from savings, releasing equity from another property, or the proceeds of selling an asset. Some landlords remortgage their own home or an existing rental to raise a deposit, as our guide to releasing equity explains. However you raise it, lenders will want to see the deposit is genuinely yours and lawfully sourced, so be ready to evidence where it has come from.
Deposit plus other upfront costs
The deposit is not the only money you need upfront. You also have stamp duty, including the 5% surcharge, plus arrangement, valuation and legal fees, as our guide to buy-to-let mortgages explained explains. These can add a substantial sum on top of the deposit, so budgeting for the full upfront cost, not just the deposit, is essential to avoid falling short before completion.
Why lenders want more
Lenders ask for larger deposits on buy-to-let because rental property is considered higher risk than an owner-occupied home: rent can be interrupted, tenants can cause issues, and the loan often relies on the property's income. A bigger deposit gives the lender more security and the landlord more equity as a buffer. Understanding this helps explain why buy-to-let needs more upfront than buying your own home.
An example of the deposit
To put it in numbers, on a £200,000 buy-to-let at 75% loan-to-value, you would need a 25% deposit of £50,000. At 60% loan-to-value, for the best rates, you would need £80,000. These are substantial sums, and they sit on top of stamp duty and fees, so the cash required to start in buy-to-let is considerable, which is worth planning for well in advance of buying.
Releasing equity for a deposit
Many landlords fund a buy-to-let deposit by releasing equity from their own home or an existing rental, remortgaging to free up cash, as our guide to releasing equity explains. This can be an efficient way to raise a deposit if you have built up equity, though it increases the borrowing on the property you release from. Weighing this extra borrowing against the new investment is part of the decision.
Higher loan-to-value options
While 75% loan-to-value is standard, some specialist lenders offer buy-to-let up to around 80% or even 85%, requiring a smaller deposit. These come with higher rates and stricter criteria, and the rental cover test still has to be met, which can be harder at higher borrowing. So while a smaller deposit is possible, it is not always the most cost-effective route, and the sums need to work.
The deposit and your rental yield
The size of your deposit affects your rental yield and cash flow. A bigger deposit means a smaller mortgage, lower interest costs and more monthly profit, but ties up more of your capital. A smaller deposit frees up capital but leaves a larger mortgage and tighter cash flow. Balancing how much deposit to put in, against the return on your capital, is a key investment decision for landlords.
Why lenders want a larger deposit
Lenders require larger deposits on buy-to-let because rental property is higher risk than an owner-occupied home: income can be interrupted by voids, tenants can cause problems, and repossessing a let property can be more complex. A bigger deposit gives the lender a larger equity cushion if values fall. Understanding this risk-based reasoning explains why buy-to-let consistently demands more upfront than residential lending.
Saving for a buy-to-let deposit
Because the sums are large, saving for a buy-to-let deposit takes planning. Setting a target, saving regularly, and keeping the money somewhere accessible but earning interest all help. Some buyers combine savings with released equity. Building the deposit, plus a buffer for stamp duty, fees and early costs, before you start looking ensures you can move when you find a suitable property, as our guide to buy-to-let mortgages notes.
The deposit and the wider sums
When judging a buy-to-let, the deposit is just one part of the picture: you also need the rent to cover the mortgage by the required margin, and the overall return to justify tying up your capital. A large deposit improves cash flow but lowers the return on the money invested. Considering the deposit alongside the rent, costs and yield gives a truer sense of whether a property is a sound investment.
Because of all this, it is worth working out your full cash requirement, deposit, stamp duty including the surcharge, fees and a contingency, before you start, so you know exactly what you need and are not caught short partway through a purchase you cannot complete.
The bottom line is that buy-to-let asks for a meaningful chunk of capital upfront, the deposit being the largest part, so be sure you can raise it comfortably without leaving yourself short of the reserves a landlord needs once the property is up and running.
Plan the deposit early, keep a reserve behind it, and the rest of the buy-to-let journey becomes far more manageable.
A well-funded start, with the deposit secured and a sensible cash reserve behind it, puts your investment on solid ground from day one and gives you room to handle the ups and downs of letting.
In short
Buy-to-let usually requires a deposit of at least 25% of the property's value, giving a maximum loan-to-value of around 75%, with the best rates at 40% or more deposit. Some specialist lenders accept smaller deposits at higher rates. The deposit often comes from savings or released equity, and you must also budget for stamp duty including the 5% surcharge and various fees on top of the deposit.
Where to get help and next steps
Read our guides to how buy-to-let mortgages work and how much you can borrow on buy-to-let. This is general information, not mortgage, tax or financial advice.